diff --git a/src/structs.h b/src/structs.h
index c3d75bd..7fb8f22 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -47,11 +47,11 @@
  */
 typedef struct growarray
 {
-    int	    ga_len;		    /* current number of items used */
-    int	    ga_maxlen;		    /* maximum number of items possible */
-    int	    ga_itemsize;	    /* sizeof(item) */
-    int	    ga_growsize;	    /* number of items to grow each time */
-    void    *ga_data;		    /* pointer to the first item */
+    int	    ga_len;		    // current number of items used
+    int	    ga_maxlen;		    // maximum number of items possible
+    int	    ga_itemsize;	    // sizeof(item)
+    int	    ga_growsize;	    // number of items to grow each time
+    void    *ga_data;		    // pointer to the first item
 } garray_T;
 
 #define GA_EMPTY    {0, 0, 0, 0, NULL}
@@ -59,8 +59,8 @@
 typedef struct window_S		win_T;
 typedef struct wininfo_S	wininfo_T;
 typedef struct frame_S		frame_T;
-typedef int			scid_T;		/* script ID */
-typedef struct file_buffer	buf_T;  /* forward declaration */
+typedef int			scid_T;		// script ID
+typedef struct file_buffer	buf_T;		// forward declaration
 typedef struct terminal_S	term_T;
 
 #ifdef FEAT_MENU
@@ -109,7 +109,7 @@
 # endif
 # define guicolor_T long
 # define INVALCOLOR ((guicolor_T)0x1ffffff)
-    /* only used for cterm.bg_rgb and cterm.fg_rgb: use cterm color */
+    // only used for cterm.bg_rgb and cterm.fg_rgb: use cterm color
 # define CTERMCOLOR ((guicolor_T)0x1fffffe)
 #endif
 #define COLOR_INVALID(x) ((x) == INVALCOLOR || (x) == CTERMCOLOR)
@@ -119,24 +119,24 @@
  * (a normal mark is a lnum/col pair, the same as a file position)
  */
 
-/* (Note: for EBCDIC there are more than 26, because there are gaps in the
- * alphabet coding.  To minimize changes to the code, I decided to just
- * increase the number of possible marks. */
-#define NMARKS		('z' - 'a' + 1)	/* max. # of named marks */
-#define JUMPLISTSIZE	100		/* max. # of marks in jump list */
-#define TAGSTACKSIZE	20		/* max. # of tags in tag stack */
+// (Note: for EBCDIC there are more than 26, because there are gaps in the
+// alphabet coding.  To minimize changes to the code, I decided to just
+// increase the number of possible marks.
+#define NMARKS		('z' - 'a' + 1)	// max. # of named marks
+#define JUMPLISTSIZE	100		// max. # of marks in jump list
+#define TAGSTACKSIZE	20		// max. # of tags in tag stack
 
 typedef struct filemark
 {
-    pos_T	mark;		/* cursor position */
-    int		fnum;		/* file number */
+    pos_T	mark;		// cursor position
+    int		fnum;		// file number
 } fmark_T;
 
-/* Xtended file mark: also has a file name */
+// Xtended file mark: also has a file name
 typedef struct xfilemark
 {
     fmark_T	fmark;
-    char_u	*fname;		/* file name, used when fnum == 0 */
+    char_u	*fname;		// file name, used when fnum == 0
 #ifdef FEAT_VIMINFO
     time_T	time_set;
 #endif
@@ -179,117 +179,117 @@
 #endif
 #ifdef FEAT_FOLDING
     long	wo_fdc;
-# define w_p_fdc w_onebuf_opt.wo_fdc	/* 'foldcolumn' */
+# define w_p_fdc w_onebuf_opt.wo_fdc	// 'foldcolumn'
     int		wo_fdc_save;
-# define w_p_fdc_save w_onebuf_opt.wo_fdc_save	/* 'foldenable' saved for diff mode */
+# define w_p_fdc_save w_onebuf_opt.wo_fdc_save	// 'foldenable' saved for diff mode
     int		wo_fen;
-# define w_p_fen w_onebuf_opt.wo_fen	/* 'foldenable' */
+# define w_p_fen w_onebuf_opt.wo_fen	// 'foldenable'
     int		wo_fen_save;
-# define w_p_fen_save w_onebuf_opt.wo_fen_save	/* 'foldenable' saved for diff mode */
+# define w_p_fen_save w_onebuf_opt.wo_fen_save	// 'foldenable' saved for diff mode
     char_u	*wo_fdi;
-# define w_p_fdi w_onebuf_opt.wo_fdi	/* 'foldignore' */
+# define w_p_fdi w_onebuf_opt.wo_fdi	// 'foldignore'
     long	wo_fdl;
-# define w_p_fdl w_onebuf_opt.wo_fdl	/* 'foldlevel' */
+# define w_p_fdl w_onebuf_opt.wo_fdl	// 'foldlevel'
     int		wo_fdl_save;
-# define w_p_fdl_save w_onebuf_opt.wo_fdl_save	/* 'foldlevel' state saved for diff mode */
+# define w_p_fdl_save w_onebuf_opt.wo_fdl_save	// 'foldlevel' state saved for diff mode
     char_u	*wo_fdm;
-# define w_p_fdm w_onebuf_opt.wo_fdm	/* 'foldmethod' */
+# define w_p_fdm w_onebuf_opt.wo_fdm	// 'foldmethod'
     char_u	*wo_fdm_save;
-# define w_p_fdm_save w_onebuf_opt.wo_fdm_save	/* 'fdm' saved for diff mode */
+# define w_p_fdm_save w_onebuf_opt.wo_fdm_save	// 'fdm' saved for diff mode
     long	wo_fml;
-# define w_p_fml w_onebuf_opt.wo_fml	/* 'foldminlines' */
+# define w_p_fml w_onebuf_opt.wo_fml	// 'foldminlines'
     long	wo_fdn;
-# define w_p_fdn w_onebuf_opt.wo_fdn	/* 'foldnestmax' */
+# define w_p_fdn w_onebuf_opt.wo_fdn	// 'foldnestmax'
 # ifdef FEAT_EVAL
     char_u	*wo_fde;
-# define w_p_fde w_onebuf_opt.wo_fde	/* 'foldexpr' */
+# define w_p_fde w_onebuf_opt.wo_fde	// 'foldexpr'
     char_u	*wo_fdt;
-#  define w_p_fdt w_onebuf_opt.wo_fdt	/* 'foldtext' */
+#  define w_p_fdt w_onebuf_opt.wo_fdt	// 'foldtext'
 # endif
     char_u	*wo_fmr;
-# define w_p_fmr w_onebuf_opt.wo_fmr	/* 'foldmarker' */
+# define w_p_fmr w_onebuf_opt.wo_fmr	// 'foldmarker'
 #endif
 #ifdef FEAT_LINEBREAK
     int		wo_lbr;
-# define w_p_lbr w_onebuf_opt.wo_lbr	/* 'linebreak' */
+# define w_p_lbr w_onebuf_opt.wo_lbr	// 'linebreak'
 #endif
     int		wo_list;
-#define w_p_list w_onebuf_opt.wo_list	/* 'list' */
+#define w_p_list w_onebuf_opt.wo_list	// 'list'
     int		wo_nu;
-#define w_p_nu w_onebuf_opt.wo_nu	/* 'number' */
+#define w_p_nu w_onebuf_opt.wo_nu	// 'number'
     int		wo_rnu;
-#define w_p_rnu w_onebuf_opt.wo_rnu	/* 'relativenumber' */
+#define w_p_rnu w_onebuf_opt.wo_rnu	// 'relativenumber'
 #ifdef FEAT_LINEBREAK
     long	wo_nuw;
-# define w_p_nuw w_onebuf_opt.wo_nuw	/* 'numberwidth' */
+# define w_p_nuw w_onebuf_opt.wo_nuw	// 'numberwidth'
 #endif
     int		wo_wfh;
-# define w_p_wfh w_onebuf_opt.wo_wfh	/* 'winfixheight' */
+# define w_p_wfh w_onebuf_opt.wo_wfh	// 'winfixheight'
     int		wo_wfw;
-# define w_p_wfw w_onebuf_opt.wo_wfw	/* 'winfixwidth' */
+# define w_p_wfw w_onebuf_opt.wo_wfw	// 'winfixwidth'
 #if defined(FEAT_QUICKFIX)
     int		wo_pvw;
-# define w_p_pvw w_onebuf_opt.wo_pvw	/* 'previewwindow' */
+# define w_p_pvw w_onebuf_opt.wo_pvw	// 'previewwindow'
 #endif
 #ifdef FEAT_RIGHTLEFT
     int		wo_rl;
-# define w_p_rl w_onebuf_opt.wo_rl	/* 'rightleft' */
+# define w_p_rl w_onebuf_opt.wo_rl	// 'rightleft'
     char_u	*wo_rlc;
-# define w_p_rlc w_onebuf_opt.wo_rlc	/* 'rightleftcmd' */
+# define w_p_rlc w_onebuf_opt.wo_rlc	// 'rightleftcmd'
 #endif
     long	wo_scr;
-#define w_p_scr w_onebuf_opt.wo_scr	/* 'scroll' */
+#define w_p_scr w_onebuf_opt.wo_scr	// 'scroll'
 #ifdef FEAT_SPELL
     int		wo_spell;
-# define w_p_spell w_onebuf_opt.wo_spell /* 'spell' */
+# define w_p_spell w_onebuf_opt.wo_spell // 'spell'
 #endif
 #ifdef FEAT_SYN_HL
     int		wo_cuc;
-# define w_p_cuc w_onebuf_opt.wo_cuc	/* 'cursorcolumn' */
+# define w_p_cuc w_onebuf_opt.wo_cuc	// 'cursorcolumn'
     int		wo_cul;
-# define w_p_cul w_onebuf_opt.wo_cul	/* 'cursorline' */
+# define w_p_cul w_onebuf_opt.wo_cul	// 'cursorline'
     char_u	*wo_cc;
-# define w_p_cc w_onebuf_opt.wo_cc	/* 'colorcolumn' */
+# define w_p_cc w_onebuf_opt.wo_cc	// 'colorcolumn'
 #endif
 #ifdef FEAT_STL_OPT
     char_u	*wo_stl;
-#define w_p_stl w_onebuf_opt.wo_stl	/* 'statusline' */
+#define w_p_stl w_onebuf_opt.wo_stl	// 'statusline'
 #endif
     int		wo_scb;
-#define w_p_scb w_onebuf_opt.wo_scb	/* 'scrollbind' */
-    int		wo_diff_saved; /* options were saved for starting diff mode */
+#define w_p_scb w_onebuf_opt.wo_scb	// 'scrollbind'
+    int		wo_diff_saved; // options were saved for starting diff mode
 #define w_p_diff_saved w_onebuf_opt.wo_diff_saved
-    int		wo_scb_save;	/* 'scrollbind' saved for diff mode*/
+    int		wo_scb_save;	// 'scrollbind' saved for diff mode
 #define w_p_scb_save w_onebuf_opt.wo_scb_save
     int		wo_wrap;
-#define w_p_wrap w_onebuf_opt.wo_wrap	/* 'wrap' */
+#define w_p_wrap w_onebuf_opt.wo_wrap	// 'wrap'
 #ifdef FEAT_DIFF
-    int		wo_wrap_save;	/* 'wrap' state saved for diff mode*/
+    int		wo_wrap_save;	// 'wrap' state saved for diff mode
 # define w_p_wrap_save w_onebuf_opt.wo_wrap_save
 #endif
 #ifdef FEAT_CONCEAL
-    char_u	*wo_cocu;		/* 'concealcursor' */
+    char_u	*wo_cocu;		// 'concealcursor'
 # define w_p_cocu w_onebuf_opt.wo_cocu
-    long	wo_cole;		/* 'conceallevel' */
+    long	wo_cole;		// 'conceallevel'
 # define w_p_cole w_onebuf_opt.wo_cole
 #endif
     int		wo_crb;
-#define w_p_crb w_onebuf_opt.wo_crb	/* 'cursorbind' */
-    int		wo_crb_save;	/* 'cursorbind' state saved for diff mode*/
+#define w_p_crb w_onebuf_opt.wo_crb	// 'cursorbind'
+    int		wo_crb_save;	// 'cursorbind' state saved for diff mode
 #define w_p_crb_save w_onebuf_opt.wo_crb_save
 #ifdef FEAT_SIGNS
     char_u	*wo_scl;
-# define w_p_scl w_onebuf_opt.wo_scl	/* 'signcolumn' */
+# define w_p_scl w_onebuf_opt.wo_scl	// 'signcolumn'
 #endif
 #ifdef FEAT_TERMINAL
     char_u	*wo_twk;
-# define w_p_twk w_onebuf_opt.wo_twk	/* 'termwinkey' */
+# define w_p_twk w_onebuf_opt.wo_twk	// 'termwinkey'
     char_u	*wo_tws;
-# define w_p_tws w_onebuf_opt.wo_tws	/* 'termwinsize' */
+# define w_p_tws w_onebuf_opt.wo_tws	// 'termwinsize'
 #endif
 
 #ifdef FEAT_EVAL
-    sctx_T	wo_script_ctx[WV_COUNT];	/* SCTXs for window-local options */
+    sctx_T	wo_script_ctx[WV_COUNT];	// SCTXs for window-local options
 # define w_p_script_ctx w_onebuf_opt.wo_script_ctx
 #endif
 } winopt_T;
@@ -306,15 +306,15 @@
  */
 struct wininfo_S
 {
-    wininfo_T	*wi_next;	/* next entry or NULL for last entry */
-    wininfo_T	*wi_prev;	/* previous entry or NULL for first entry */
-    win_T	*wi_win;	/* pointer to window that did set wi_fpos */
-    pos_T	wi_fpos;	/* last cursor position in the file */
-    int		wi_optset;	/* TRUE when wi_opt has useful values */
-    winopt_T	wi_opt;		/* local window options */
+    wininfo_T	*wi_next;	// next entry or NULL for last entry
+    wininfo_T	*wi_prev;	// previous entry or NULL for first entry
+    win_T	*wi_win;	// pointer to window that did set wi_fpos
+    pos_T	wi_fpos;	// last cursor position in the file
+    int		wi_optset;	// TRUE when wi_opt has useful values
+    winopt_T	wi_opt;		// local window options
 #ifdef FEAT_FOLDING
-    int		wi_fold_manual;	/* copy of w_fold_manual */
-    garray_T	wi_folds;	/* clone of w_folds */
+    int		wi_fold_manual;	// copy of w_fold_manual
+    garray_T	wi_folds;	// clone of w_folds
 #endif
 };
 
@@ -324,20 +324,22 @@
  */
 typedef struct foldinfo
 {
-    int		fi_level;	/* level of the fold; when this is zero the
-				   other fields are invalid */
-    int		fi_lnum;	/* line number where fold starts */
-    int		fi_low_level;	/* lowest fold level that starts in the same
-				   line */
+    int		fi_level;	// level of the fold; when this is zero the
+				// other fields are invalid
+    int		fi_lnum;	// line number where fold starts
+    int		fi_low_level;	// lowest fold level that starts in the same
+				// line
 } foldinfo_T;
 
-/* Structure to store info about the Visual area. */
+/*
+ * Structure to store info about the Visual area.
+ */
 typedef struct
 {
-    pos_T	vi_start;	/* start pos of last VIsual */
-    pos_T	vi_end;		/* end position of last VIsual */
-    int		vi_mode;	/* VIsual_mode of last VIsual */
-    colnr_T	vi_curswant;	/* MAXCOL from w_curswant */
+    pos_T	vi_start;	// start pos of last VIsual
+    pos_T	vi_end;		// end position of last VIsual
+    int		vi_mode;	// VIsual_mode of last VIsual
+    colnr_T	vi_curswant;	// MAXCOL from w_curswant
 } visualinfo_T;
 
 /*
@@ -356,62 +358,62 @@
 typedef struct u_header u_header_T;
 struct u_entry
 {
-    u_entry_T	*ue_next;	/* pointer to next entry in list */
-    linenr_T	ue_top;		/* number of line above undo block */
-    linenr_T	ue_bot;		/* number of line below undo block */
-    linenr_T	ue_lcount;	/* linecount when u_save called */
-    undoline_T	*ue_array;	/* array of lines in undo block */
-    long	ue_size;	/* number of lines in ue_array */
+    u_entry_T	*ue_next;	// pointer to next entry in list
+    linenr_T	ue_top;		// number of line above undo block
+    linenr_T	ue_bot;		// number of line below undo block
+    linenr_T	ue_lcount;	// linecount when u_save called
+    undoline_T	*ue_array;	// array of lines in undo block
+    long	ue_size;	// number of lines in ue_array
 #ifdef U_DEBUG
-    int		ue_magic;	/* magic number to check allocation */
+    int		ue_magic;	// magic number to check allocation
 #endif
 };
 
 struct u_header
 {
-    /* The following have a pointer and a number. The number is used when
-     * reading the undo file in u_read_undo() */
+    // The following have a pointer and a number. The number is used when
+    // reading the undo file in u_read_undo()
     union {
-	u_header_T *ptr;	/* pointer to next undo header in list */
+	u_header_T *ptr;	// pointer to next undo header in list
 	long	   seq;
     } uh_next;
     union {
-	u_header_T *ptr;	/* pointer to previous header in list */
+	u_header_T *ptr;	// pointer to previous header in list
 	long	   seq;
     } uh_prev;
     union {
-	u_header_T *ptr;	/* pointer to next header for alt. redo */
+	u_header_T *ptr;	// pointer to next header for alt. redo
 	long	   seq;
     } uh_alt_next;
     union {
-	u_header_T *ptr;	/* pointer to previous header for alt. redo */
+	u_header_T *ptr;	// pointer to previous header for alt. redo
 	long	   seq;
     } uh_alt_prev;
-    long	uh_seq;		/* sequence number, higher == newer undo */
-    int		uh_walk;	/* used by undo_time() */
-    u_entry_T	*uh_entry;	/* pointer to first entry */
-    u_entry_T	*uh_getbot_entry; /* pointer to where ue_bot must be set */
-    pos_T	uh_cursor;	/* cursor position before saving */
+    long	uh_seq;		// sequence number, higher == newer undo
+    int		uh_walk;	// used by undo_time()
+    u_entry_T	*uh_entry;	// pointer to first entry
+    u_entry_T	*uh_getbot_entry; // pointer to where ue_bot must be set
+    pos_T	uh_cursor;	// cursor position before saving
     long	uh_cursor_vcol;
-    int		uh_flags;	/* see below */
-    pos_T	uh_namedm[NMARKS];	/* marks before undo/after redo */
-    visualinfo_T uh_visual;	/* Visual areas before undo/after redo */
-    time_T	uh_time;	/* timestamp when the change was made */
-    long	uh_save_nr;	/* set when the file was saved after the
-				   changes in this block */
+    int		uh_flags;	// see below
+    pos_T	uh_namedm[NMARKS];	// marks before undo/after redo
+    visualinfo_T uh_visual;	// Visual areas before undo/after redo
+    time_T	uh_time;	// timestamp when the change was made
+    long	uh_save_nr;	// set when the file was saved after the
+				// changes in this block
 #ifdef U_DEBUG
-    int		uh_magic;	/* magic number to check allocation */
+    int		uh_magic;	// magic number to check allocation
 #endif
 };
 
-/* values for uh_flags */
-#define UH_CHANGED  0x01	/* b_changed flag before undo/after redo */
-#define UH_EMPTYBUF 0x02	/* buffer was empty */
+// values for uh_flags
+#define UH_CHANGED  0x01	// b_changed flag before undo/after redo
+#define UH_EMPTYBUF 0x02	// buffer was empty
 
 /*
  * structures used in undo.c
  */
-#define ALIGN_LONG	/* longword alignment and use filler byte */
+#define ALIGN_LONG	// longword alignment and use filler byte
 #define ALIGN_SIZE (sizeof(long))
 
 #define ALIGN_MASK (ALIGN_SIZE - 1)
@@ -424,11 +426,11 @@
 struct m_info
 {
 #ifdef ALIGN_LONG
-    long_u	m_size;		/* size of the chunk (including m_info) */
+    long_u	m_size;		// size of the chunk (including m_info)
 #else
-    short_u	m_size;		/* size of the chunk (including m_info) */
+    short_u	m_size;		// size of the chunk (including m_info)
 #endif
-    minfo_T	*m_next;	/* pointer to next free chunk in the list */
+    minfo_T	*m_next;	// pointer to next free chunk in the list
 };
 
 /*
@@ -459,13 +461,13 @@
 
 typedef struct mf_hashtab_S
 {
-    long_u	    mht_mask;	    /* mask used for hash value (nr of items
-				     * in array is "mht_mask" + 1) */
-    long_u	    mht_count;	    /* nr of items inserted into hashtable */
-    mf_hashitem_T   **mht_buckets;  /* points to mht_small_buckets or
-				     *dynamically allocated array */
-    mf_hashitem_T   *mht_small_buckets[MHT_INIT_SIZE];   /* initial buckets */
-    char	    mht_fixed;	    /* non-zero value forbids growth */
+    long_u	    mht_mask;	    // mask used for hash value (nr of items
+				    // in array is "mht_mask" + 1)
+    long_u	    mht_count;	    // nr of items inserted into hashtable
+    mf_hashitem_T   **mht_buckets;  // points to mht_small_buckets or
+				    //dynamically allocated array
+    mf_hashitem_T   *mht_small_buckets[MHT_INIT_SIZE];   // initial buckets
+    char	    mht_fixed;	    // non-zero value forbids growth
 } mf_hashtab_T;
 
 /*
@@ -485,17 +487,17 @@
 
 struct block_hdr
 {
-    mf_hashitem_T bh_hashitem;      /* header for hash table and key */
-#define bh_bnum bh_hashitem.mhi_key /* block number, part of bh_hashitem */
+    mf_hashitem_T bh_hashitem;      // header for hash table and key
+#define bh_bnum bh_hashitem.mhi_key // block number, part of bh_hashitem
 
-    bhdr_T	*bh_next;	    /* next block_hdr in free or used list */
-    bhdr_T	*bh_prev;	    /* previous block_hdr in used list */
-    char_u	*bh_data;	    /* pointer to memory (for used block) */
-    int		bh_page_count;	    /* number of pages in this block */
+    bhdr_T	*bh_next;	    // next block_hdr in free or used list
+    bhdr_T	*bh_prev;	    // previous block_hdr in used list
+    char_u	*bh_data;	    // pointer to memory (for used block)
+    int		bh_page_count;	    // number of pages in this block
 
 #define BH_DIRTY    1
 #define BH_LOCKED   2
-    char	bh_flags;	    /* BH_DIRTY or BH_LOCKED */
+    char	bh_flags;	    // BH_DIRTY or BH_LOCKED
 };
 
 /*
@@ -508,10 +510,10 @@
 
 struct nr_trans
 {
-    mf_hashitem_T nt_hashitem;		/* header for hash table and key */
-#define nt_old_bnum nt_hashitem.mhi_key	/* old, negative, number */
+    mf_hashitem_T nt_hashitem;		// header for hash table and key
+#define nt_old_bnum nt_hashitem.mhi_key	// old, negative, number
 
-    blocknr_T	nt_new_bnum;		/* new, positive, number */
+    blocknr_T	nt_new_bnum;		// new, positive, number
 };
 
 
@@ -523,8 +525,8 @@
  */
 struct buffblock
 {
-    buffblock_T	*b_next;	/* pointer to next buffblock */
-    char_u	b_str[1];	/* contents (actually longer) */
+    buffblock_T	*b_next;	// pointer to next buffblock
+    char_u	b_str[1];	// contents (actually longer)
 };
 
 /*
@@ -532,10 +534,10 @@
  */
 struct buffheader
 {
-    buffblock_T	bh_first;	/* first (dummy) block of list */
-    buffblock_T	*bh_curr;	/* buffblock for appending */
-    int		bh_index;	/* index for reading */
-    int		bh_space;	/* space in bh_curr for appending */
+    buffblock_T	bh_first;	// first (dummy) block of list
+    buffblock_T	*bh_curr;	// buffblock for appending
+    int		bh_index;	// index for reading
+    int		bh_space;	// space in bh_curr for appending
 };
 
 typedef struct
@@ -549,29 +551,31 @@
  */
 typedef struct expand
 {
-    int		xp_context;		/* type of expansion */
-    char_u	*xp_pattern;		/* start of item to expand */
-    int		xp_pattern_len;		/* bytes in xp_pattern before cursor */
+    int		xp_context;		// type of expansion
+    char_u	*xp_pattern;		// start of item to expand
+    int		xp_pattern_len;		// bytes in xp_pattern before cursor
 #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
-    char_u	*xp_arg;		/* completion function */
-    sctx_T	xp_script_ctx;		/* SCTX for completion function */
+    char_u	*xp_arg;		// completion function
+    sctx_T	xp_script_ctx;		// SCTX for completion function
 #endif
-    int		xp_backslash;		/* one of the XP_BS_ values */
+    int		xp_backslash;		// one of the XP_BS_ values
 #ifndef BACKSLASH_IN_FILENAME
-    int		xp_shell;		/* TRUE for a shell command, more
-					   characters need to be escaped */
+    int		xp_shell;		// TRUE for a shell command, more
+					// characters need to be escaped
 #endif
-    int		xp_numfiles;		/* number of files found by
-						    file name completion */
-    char_u	**xp_files;		/* list of files */
-    char_u	*xp_line;		/* text being completed */
-    int		xp_col;			/* cursor position in line */
+    int		xp_numfiles;		// number of files found by
+					// file name completion
+    char_u	**xp_files;		// list of files
+    char_u	*xp_line;		// text being completed
+    int		xp_col;			// cursor position in line
 } expand_T;
 
-/* values for xp_backslash */
-#define XP_BS_NONE	0	/* nothing special for backslashes */
-#define XP_BS_ONE	1	/* uses one backslash before a space */
-#define XP_BS_THREE	2	/* uses three backslashes before a space */
+/*
+ * values for xp_backslash
+ */
+#define XP_BS_NONE	0	// nothing special for backslashes
+#define XP_BS_ONE	1	// uses one backslash before a space
+#define XP_BS_THREE	2	// uses three backslashes before a space
 
 /*
  * Command modifiers ":vertical", ":browse", ":confirm" and ":hide" set a flag.
@@ -580,24 +584,24 @@
  */
 typedef struct
 {
-    int		hide;			/* TRUE when ":hide" was used */
+    int		hide;			// TRUE when ":hide" was used
 # ifdef FEAT_BROWSE_CMD
-    int		browse;			/* TRUE to invoke file dialog */
+    int		browse;			// TRUE to invoke file dialog
 # endif
-    int		split;			/* flags for win_split() */
-    int		tab;			/* > 0 when ":tab" was used */
+    int		split;			// flags for win_split()
+    int		tab;			// > 0 when ":tab" was used
 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
-    int		confirm;		/* TRUE to invoke yes/no dialog */
+    int		confirm;		// TRUE to invoke yes/no dialog
 # endif
-    int		keepalt;		/* TRUE when ":keepalt" was used */
-    int		keepmarks;		/* TRUE when ":keepmarks" was used */
-    int		keepjumps;		/* TRUE when ":keepjumps" was used */
-    int		lockmarks;		/* TRUE when ":lockmarks" was used */
-    int		keeppatterns;		/* TRUE when ":keeppatterns" was used */
-    int		noswapfile;		/* TRUE when ":noswapfile" was used */
-    char_u	*save_ei;		/* saved value of 'eventignore' */
-    regmatch_T	filter_regmatch;	/* set by :filter /pat/ */
-    int		filter_force;		/* set for :filter! */
+    int		keepalt;		// TRUE when ":keepalt" was used
+    int		keepmarks;		// TRUE when ":keepmarks" was used
+    int		keepjumps;		// TRUE when ":keepjumps" was used
+    int		lockmarks;		// TRUE when ":lockmarks" was used
+    int		keeppatterns;		// TRUE when ":keeppatterns" was used
+    int		noswapfile;		// TRUE when ":noswapfile" was used
+    char_u	*save_ei;		// saved value of 'eventignore'
+    regmatch_T	filter_regmatch;	// set by :filter /pat/
+    int		filter_force;		// set for :filter!
 } cmdmod_T;
 
 #define MF_SEED_LEN	8
@@ -644,11 +648,11 @@
  */
 typedef struct info_pointer
 {
-    blocknr_T	ip_bnum;	/* block number */
-    linenr_T	ip_low;		/* lowest lnum in this block */
-    linenr_T	ip_high;	/* highest lnum in this block */
-    int		ip_index;	/* index for block with current lnum */
-} infoptr_T;	/* block/index pair */
+    blocknr_T	ip_bnum;	// block number
+    linenr_T	ip_low;		// lowest lnum in this block
+    linenr_T	ip_high;	// highest lnum in this block
+    int		ip_index;	// index for block with current lnum
+} infoptr_T;	// block/index pair
 
 #ifdef FEAT_BYTEOFF
 typedef struct ml_chunksize
@@ -657,11 +661,12 @@
     long	mlcs_totalsize;
 } chunksize_T;
 
- /* Flags when calling ml_updatechunk() */
-
-#define ML_CHNK_ADDLINE 1
-#define ML_CHNK_DELLINE 2
-#define ML_CHNK_UPDLINE 3
+/*
+ * Flags when calling ml_updatechunk()
+ */
+# define ML_CHNK_ADDLINE 1
+# define ML_CHNK_DELLINE 2
+# define ML_CHNK_UPDLINE 3
 #endif
 
 /*
@@ -669,28 +674,28 @@
  */
 typedef struct memline
 {
-    linenr_T	ml_line_count;	/* number of lines in the buffer */
+    linenr_T	ml_line_count;	// number of lines in the buffer
 
-    memfile_T	*ml_mfp;	/* pointer to associated memfile */
+    memfile_T	*ml_mfp;	// pointer to associated memfile
 
-#define ML_EMPTY	1	/* empty buffer */
-#define ML_LINE_DIRTY	2	/* cached line was changed and allocated */
-#define ML_LOCKED_DIRTY	4	/* ml_locked was changed */
-#define ML_LOCKED_POS	8	/* ml_locked needs positive block number */
+#define ML_EMPTY	1	// empty buffer
+#define ML_LINE_DIRTY	2	// cached line was changed and allocated
+#define ML_LOCKED_DIRTY	4	// ml_locked was changed
+#define ML_LOCKED_POS	8	// ml_locked needs positive block number
     int		ml_flags;
 
-    infoptr_T	*ml_stack;	/* stack of pointer blocks (array of IPTRs) */
-    int		ml_stack_top;	/* current top of ml_stack */
-    int		ml_stack_size;	/* total number of entries in ml_stack */
+    infoptr_T	*ml_stack;	// stack of pointer blocks (array of IPTRs)
+    int		ml_stack_top;	// current top of ml_stack
+    int		ml_stack_size;	// total number of entries in ml_stack
 
-    linenr_T	ml_line_lnum;	/* line number of cached line, 0 if not valid */
-    char_u	*ml_line_ptr;	/* pointer to cached line */
-    colnr_T	ml_line_len;	/* length of the cached line, including NUL */
+    linenr_T	ml_line_lnum;	// line number of cached line, 0 if not valid
+    char_u	*ml_line_ptr;	// pointer to cached line
+    colnr_T	ml_line_len;	// length of the cached line, including NUL
 
-    bhdr_T	*ml_locked;	/* block used by last ml_get */
-    linenr_T	ml_locked_low;	/* first line in ml_locked */
-    linenr_T	ml_locked_high;	/* last line in ml_locked */
-    int		ml_locked_lineadd;  /* number of lines inserted in ml_locked */
+    bhdr_T	*ml_locked;	// block used by last ml_get
+    linenr_T	ml_locked_low;	// first line in ml_locked
+    linenr_T	ml_locked_high;	// last line in ml_locked
+    int		ml_locked_lineadd;  // number of lines inserted in ml_locked
 #ifdef FEAT_BYTEOFF
     chunksize_T *ml_chunksize;
     int		ml_numchunks;
@@ -745,13 +750,13 @@
 
 struct signlist
 {
-    int		id;		/* unique identifier for each placed sign */
-    linenr_T	lnum;		/* line number which has this sign */
-    int		typenr;		/* typenr of sign */
-    signgroup_T	*group;		/* sign group */
-    int		priority;	/* priority for highlighting */
-    signlist_T	*next;		/* next signlist entry */
-    signlist_T  *prev;		/* previous entry -- for easy reordering */
+    int		id;		// unique identifier for each placed sign
+    linenr_T	lnum;		// line number which has this sign
+    int		typenr;		// typenr of sign
+    signgroup_T	*group;		// sign group
+    int		priority;	// priority for highlighting
+    signlist_T	*next;		// next signlist entry
+    signlist_T  *prev;		// previous entry -- for easy reordering
 };
 
 #if defined(FEAT_SIGNS) || defined(PROTO)
@@ -775,9 +780,9 @@
  */
 typedef struct arglist
 {
-    garray_T	al_ga;		/* growarray with the array of file names */
-    int		al_refcount;	/* number of windows using this arglist */
-    int		id;		/* id of this arglist */
+    garray_T	al_ga;		// growarray with the array of file names
+    int		al_refcount;	// number of windows using this arglist
+    int		id;		// id of this arglist
 } alist_T;
 
 /*
@@ -787,8 +792,8 @@
  */
 typedef struct argentry
 {
-    char_u	*ae_fname;	/* file name as specified */
-    int		ae_fnum;	/* buffer number with expanded file name */
+    char_u	*ae_fname;	// file name as specified
+    int		ae_fnum;	// buffer number with expanded file name
 } aentry_T;
 
 #define ALIST(win)	(win)->w_alist
@@ -809,8 +814,8 @@
 typedef struct eslist_elem eslist_T;
 struct eslist_elem
 {
-    int		saved_emsg_silent;	/* saved value of "emsg_silent" */
-    eslist_T	*next;			/* next element on the list */
+    int		saved_emsg_silent;	// saved value of "emsg_silent"
+    eslist_T	*next;			// next element on the list
 };
 
 /*
@@ -821,59 +826,59 @@
 
 struct condstack
 {
-    short	cs_flags[CSTACK_LEN];	/* CSF_ flags */
-    char	cs_pending[CSTACK_LEN];	/* CSTP_: what's pending in ":finally"*/
+    short	cs_flags[CSTACK_LEN];	// CSF_ flags
+    char	cs_pending[CSTACK_LEN];	// CSTP_: what's pending in ":finally"
     union {
-	void	*csp_rv[CSTACK_LEN];	/* return typeval for pending return */
-	void	*csp_ex[CSTACK_LEN];	/* exception for pending throw */
+	void	*csp_rv[CSTACK_LEN];	// return typeval for pending return
+	void	*csp_ex[CSTACK_LEN];	// exception for pending throw
     }		cs_pend;
-    void	*cs_forinfo[CSTACK_LEN]; /* info used by ":for" */
-    int		cs_line[CSTACK_LEN];	/* line nr of ":while"/":for" line */
-    int		cs_idx;			/* current entry, or -1 if none */
-    int		cs_looplevel;		/* nr of nested ":while"s and ":for"s */
-    int		cs_trylevel;		/* nr of nested ":try"s */
-    eslist_T	*cs_emsg_silent_list;	/* saved values of "emsg_silent" */
-    char	cs_lflags;		/* loop flags: CSL_ flags */
+    void	*cs_forinfo[CSTACK_LEN]; // info used by ":for"
+    int		cs_line[CSTACK_LEN];	// line nr of ":while"/":for" line
+    int		cs_idx;			// current entry, or -1 if none
+    int		cs_looplevel;		// nr of nested ":while"s and ":for"s
+    int		cs_trylevel;		// nr of nested ":try"s
+    eslist_T	*cs_emsg_silent_list;	// saved values of "emsg_silent"
+    char	cs_lflags;		// loop flags: CSL_ flags
 };
 # define cs_rettv	cs_pend.csp_rv
 # define cs_exception	cs_pend.csp_ex
 
-/* There is no CSF_IF, the lack of CSF_WHILE, CSF_FOR and CSF_TRY means ":if"
- * was used. */
-# define CSF_TRUE	0x0001	/* condition was TRUE */
-# define CSF_ACTIVE	0x0002	/* current state is active */
-# define CSF_ELSE	0x0004	/* ":else" has been passed */
-# define CSF_WHILE	0x0008	/* is a ":while" */
-# define CSF_FOR	0x0010	/* is a ":for" */
+// There is no CSF_IF, the lack of CSF_WHILE, CSF_FOR and CSF_TRY means ":if"
+// was used.
+# define CSF_TRUE	0x0001	// condition was TRUE
+# define CSF_ACTIVE	0x0002	// current state is active
+# define CSF_ELSE	0x0004	// ":else" has been passed
+# define CSF_WHILE	0x0008	// is a ":while"
+# define CSF_FOR	0x0010	// is a ":for"
 
-# define CSF_TRY	0x0100	/* is a ":try" */
-# define CSF_FINALLY	0x0200	/* ":finally" has been passed */
-# define CSF_THROWN	0x0400	/* exception thrown to this try conditional */
-# define CSF_CAUGHT	0x0800  /* exception caught by this try conditional */
-# define CSF_SILENT	0x1000	/* "emsg_silent" reset by ":try" */
-/* Note that CSF_ELSE is only used when CSF_TRY and CSF_WHILE are unset
- * (an ":if"), and CSF_SILENT is only used when CSF_TRY is set. */
+# define CSF_TRY	0x0100	// is a ":try"
+# define CSF_FINALLY	0x0200	// ":finally" has been passed
+# define CSF_THROWN	0x0400	// exception thrown to this try conditional
+# define CSF_CAUGHT	0x0800  // exception caught by this try conditional
+# define CSF_SILENT	0x1000	// "emsg_silent" reset by ":try"
+// Note that CSF_ELSE is only used when CSF_TRY and CSF_WHILE are unset
+// (an ":if"), and CSF_SILENT is only used when CSF_TRY is set.
 
 /*
  * What's pending for being reactivated at the ":endtry" of this try
  * conditional:
  */
-# define CSTP_NONE	0	/* nothing pending in ":finally" clause */
-# define CSTP_ERROR	1	/* an error is pending */
-# define CSTP_INTERRUPT	2	/* an interrupt is pending */
-# define CSTP_THROW	4	/* a throw is pending */
-# define CSTP_BREAK	8	/* ":break" is pending */
-# define CSTP_CONTINUE	16	/* ":continue" is pending */
-# define CSTP_RETURN	24	/* ":return" is pending */
-# define CSTP_FINISH	32	/* ":finish" is pending */
+# define CSTP_NONE	0	// nothing pending in ":finally" clause
+# define CSTP_ERROR	1	// an error is pending
+# define CSTP_INTERRUPT	2	// an interrupt is pending
+# define CSTP_THROW	4	// a throw is pending
+# define CSTP_BREAK	8	// ":break" is pending
+# define CSTP_CONTINUE	16	// ":continue" is pending
+# define CSTP_RETURN	24	// ":return" is pending
+# define CSTP_FINISH	32	// ":finish" is pending
 
 /*
  * Flags for the cs_lflags item in struct condstack.
  */
-# define CSL_HAD_LOOP	 1	/* just found ":while" or ":for" */
-# define CSL_HAD_ENDLOOP 2	/* just found ":endwhile" or ":endfor" */
-# define CSL_HAD_CONT	 4	/* just found ":continue" */
-# define CSL_HAD_FINA	 8	/* just found ":finally" */
+# define CSL_HAD_LOOP	 1	// just found ":while" or ":for"
+# define CSL_HAD_ENDLOOP 2	// just found ":endwhile" or ":endfor"
+# define CSL_HAD_CONT	 4	// just found ":continue"
+# define CSL_HAD_FINA	 8	// just found ":finally"
 
 /*
  * A list of error messages that can be converted to an exception.  "throw_msg"
@@ -883,9 +888,9 @@
  */
 struct msglist
 {
-    char		*msg;		/* original message */
-    char		*throw_msg;	/* msg to throw: usually original one */
-    struct msglist	*next;		/* next of several messages in a row */
+    char		*msg;		// original message
+    char		*throw_msg;	// msg to throw: usually original one
+    struct msglist	*next;		// next of several messages in a row
 };
 
 /*
@@ -905,12 +910,12 @@
 typedef struct vim_exception except_T;
 struct vim_exception
 {
-    except_type_T	type;		/* exception type */
-    char		*value;		/* exception value */
-    struct msglist	*messages;	/* message(s) causing error exception */
-    char_u		*throw_name;	/* name of the throw point */
-    linenr_T		throw_lnum;	/* line number of the throw point */
-    except_T		*caught;	/* next exception on the caught stack */
+    except_type_T	type;		// exception type
+    char		*value;		// exception value
+    struct msglist	*messages;	// message(s) causing error exception
+    char_u		*throw_name;	// name of the throw point
+    linenr_T		throw_lnum;	// line number of the throw point
+    except_T		*caught;	// next exception on the caught stack
 };
 
 /*
@@ -921,17 +926,17 @@
 typedef struct cleanup_stuff cleanup_T;
 struct cleanup_stuff
 {
-    int pending;		/* error/interrupt/exception state */
-    except_T *exception;	/* exception value */
+    int pending;		// error/interrupt/exception state
+    except_T *exception;	// exception value
 };
 
 #ifdef FEAT_SYN_HL
-/* struct passed to in_id_list() */
+// struct passed to in_id_list()
 struct sp_syn
 {
-    int		inc_tag;	/* ":syn include" unique tag */
-    short	id;		/* highlight group ID of item */
-    short	*cont_in_list;	/* cont.in group IDs, if non-zero */
+    int		inc_tag;	// ":syn include" unique tag
+    short	id;		// highlight group ID of item
+    short	*cont_in_list;	// cont.in group IDs, if non-zero
 };
 
 /*
@@ -941,12 +946,12 @@
 
 struct keyentry
 {
-    keyentry_T	*ke_next;	/* next entry with identical "keyword[]" */
-    struct sp_syn k_syn;	/* struct passed to in_id_list() */
-    short	*next_list;	/* ID list for next match (if non-zero) */
+    keyentry_T	*ke_next;	// next entry with identical "keyword[]"
+    struct sp_syn k_syn;	// struct passed to in_id_list()
+    short	*next_list;	// ID list for next match (if non-zero)
     int		flags;
-    int		k_char;		/* conceal substitute character */
-    char_u	keyword[1];	/* actually longer */
+    int		k_char;		// conceal substitute character
+    char_u	keyword[1];	// actually longer
 };
 
 /*
@@ -954,13 +959,13 @@
  */
 typedef struct buf_state
 {
-    int		    bs_idx;	 /* index of pattern */
-    int		    bs_flags;	 /* flags for pattern */
+    int		    bs_idx;	 // index of pattern
+    int		    bs_flags;	 // flags for pattern
 #ifdef FEAT_CONCEAL
-    int		    bs_seqnr;	 /* stores si_seqnr */
-    int		    bs_cchar;	 /* stores si_cchar */
+    int		    bs_seqnr;	 // stores si_seqnr
+    int		    bs_cchar;	 // stores si_cchar
 #endif
-    reg_extmatch_T *bs_extmatch; /* external matches from start pattern */
+    reg_extmatch_T *bs_extmatch; // external matches from start pattern
 } bufstate_T;
 
 /*
@@ -971,55 +976,55 @@
 
 struct syn_state
 {
-    synstate_T	*sst_next;	/* next entry in used or free list */
-    linenr_T	sst_lnum;	/* line number for this state */
+    synstate_T	*sst_next;	// next entry in used or free list
+    linenr_T	sst_lnum;	// line number for this state
     union
     {
-	bufstate_T	sst_stack[SST_FIX_STATES]; /* short state stack */
-	garray_T	sst_ga;	/* growarray for long state stack */
+	bufstate_T	sst_stack[SST_FIX_STATES]; // short state stack
+	garray_T	sst_ga;	// growarray for long state stack
     } sst_union;
-    int		sst_next_flags;	/* flags for sst_next_list */
-    int		sst_stacksize;	/* number of states on the stack */
-    short	*sst_next_list;	/* "nextgroup" list in this state
-				 * (this is a copy, don't free it! */
-    disptick_T	sst_tick;	/* tick when last displayed */
-    linenr_T	sst_change_lnum;/* when non-zero, change in this line
-				 * may have made the state invalid */
+    int		sst_next_flags;	// flags for sst_next_list
+    int		sst_stacksize;	// number of states on the stack
+    short	*sst_next_list;	// "nextgroup" list in this state
+				// (this is a copy, don't free it!
+    disptick_T	sst_tick;	// tick when last displayed
+    linenr_T	sst_change_lnum;// when non-zero, change in this line
+				// may have made the state invalid
 };
-#endif /* FEAT_SYN_HL */
+#endif // FEAT_SYN_HL
 
 /*
  * Structure shared between syntax.c, screen.c and gui_x11.c.
  */
 typedef struct attr_entry
 {
-    short	    ae_attr;		/* HL_BOLD, etc. */
+    short	    ae_attr;		// HL_BOLD, etc.
     union
     {
 	struct
 	{
-	    char_u	    *start;	/* start escape sequence */
-	    char_u	    *stop;	/* stop escape sequence */
+	    char_u	    *start;	// start escape sequence
+	    char_u	    *stop;	// stop escape sequence
 	} term;
 	struct
 	{
-	    /* These colors need to be > 8 bits to hold 256. */
-	    short_u	    fg_color;	/* foreground color number */
-	    short_u	    bg_color;	/* background color number */
+	    // These colors need to be > 8 bits to hold 256.
+	    short_u	    fg_color;	// foreground color number
+	    short_u	    bg_color;	// background color number
 # ifdef FEAT_TERMGUICOLORS
-	    guicolor_T	    fg_rgb;	/* foreground color RGB */
-	    guicolor_T	    bg_rgb;	/* background color RGB */
+	    guicolor_T	    fg_rgb;	// foreground color RGB
+	    guicolor_T	    bg_rgb;	// background color RGB
 # endif
 	} cterm;
 # ifdef FEAT_GUI
 	struct
 	{
-	    guicolor_T	    fg_color;	/* foreground color handle */
-	    guicolor_T	    bg_color;	/* background color handle */
-	    guicolor_T	    sp_color;	/* special color handle */
-	    GuiFont	    font;	/* font handle */
+	    guicolor_T	    fg_color;	// foreground color handle
+	    guicolor_T	    bg_color;	// background color handle
+	    guicolor_T	    sp_color;	// special color handle
+	    GuiFont	    font;	// font handle
 #  ifdef FEAT_XFONTSET
-	    GuiFontset	    fontset;	/* fontset handle */
+	    GuiFontset	    fontset;	// fontset handle
 #  endif
 	} gui;
 # endif
@@ -1033,7 +1038,7 @@
 #  if defined(MACOS_X)
 #   include <sys/errno.h>
 #   ifndef EILSEQ
-#    define EILSEQ ENOENT /* Early MacOS X does not have EILSEQ */
+#    define EILSEQ ENOENT // Early MacOS X does not have EILSEQ
 #   endif
 typedef struct _iconv_t *iconv_t;
 #  else
@@ -1048,22 +1053,22 @@
  */
 typedef struct
 {
-    char_u	*tb_buf;	/* buffer for typed characters */
-    char_u	*tb_noremap;	/* mapping flags for characters in tb_buf[] */
-    int		tb_buflen;	/* size of tb_buf[] */
-    int		tb_off;		/* current position in tb_buf[] */
-    int		tb_len;		/* number of valid bytes in tb_buf[] */
-    int		tb_maplen;	/* nr of mapped bytes in tb_buf[] */
-    int		tb_silent;	/* nr of silently mapped bytes in tb_buf[] */
-    int		tb_no_abbr_cnt; /* nr of bytes without abbrev. in tb_buf[] */
-    int		tb_change_cnt;	/* nr of time tb_buf was changed; never zero */
+    char_u	*tb_buf;	// buffer for typed characters
+    char_u	*tb_noremap;	// mapping flags for characters in tb_buf[]
+    int		tb_buflen;	// size of tb_buf[]
+    int		tb_off;		// current position in tb_buf[]
+    int		tb_len;		// number of valid bytes in tb_buf[]
+    int		tb_maplen;	// nr of mapped bytes in tb_buf[]
+    int		tb_silent;	// nr of silently mapped bytes in tb_buf[]
+    int		tb_no_abbr_cnt; // nr of bytes without abbrev. in tb_buf[]
+    int		tb_change_cnt;	// nr of time tb_buf was changed; never zero
 } typebuf_T;
 
 /* Struct to hold the saved typeahead for save_typeahead(). */
 typedef struct
 {
     typebuf_T		save_typebuf;
-    int			typebuf_valid;	    /* TRUE when save_typebuf valid */
+    int			typebuf_valid;	    // TRUE when save_typebuf valid
     int			old_char;
     int			old_mod_mask;
     buffheader_T	save_readbuf1;
@@ -1078,16 +1083,16 @@
  */
 typedef struct
 {
-    int		vc_type;	/* zero or one of the CONV_ values */
-    int		vc_factor;	/* max. expansion factor */
+    int		vc_type;	// zero or one of the CONV_ values
+    int		vc_factor;	// max. expansion factor
 # ifdef MSWIN
-    int		vc_cpfrom;	/* codepage to convert from (CONV_CODEPAGE) */
-    int		vc_cpto;	/* codepage to convert to (CONV_CODEPAGE) */
+    int		vc_cpfrom;	// codepage to convert from (CONV_CODEPAGE)
+    int		vc_cpto;	// codepage to convert to (CONV_CODEPAGE)
 # endif
 # ifdef USE_ICONV
-    iconv_t	vc_fd;		/* for CONV_ICONV */
+    iconv_t	vc_fd;		// for CONV_ICONV
 # endif
-    int		vc_fail;	/* fail for invalid char, don't use '?' */
+    int		vc_fail;	// fail for invalid char, don't use '?'
 } vimconv_T;
 
 /*
@@ -1095,11 +1100,11 @@
  */
 typedef struct
 {
-    char_u	*vir_line;	/* text of the current line */
-    FILE	*vir_fd;	/* file descriptor */
-    vimconv_T	vir_conv;	/* encoding conversion */
-    int		vir_version;	/* viminfo version detected or -1 */
-    garray_T	vir_barlines;	/* lines starting with | */
+    char_u	*vir_line;	// text of the current line
+    FILE	*vir_fd;	// file descriptor
+    vimconv_T	vir_conv;	// encoding conversion
+    int		vir_version;	// viminfo version detected or -1
+    garray_T	vir_barlines;	// lines starting with |
 } vir_T;
 
 #define CONV_NONE		0
@@ -1109,7 +1114,7 @@
 #define CONV_TO_LATIN9		4
 #define CONV_ICONV		5
 #ifdef MSWIN
-# define CONV_CODEPAGE		10	/* codepage -> codepage */
+# define CONV_CODEPAGE		10	// codepage -> codepage
 #endif
 #ifdef MACOS_X
 # define CONV_MAC_LATIN1	20
@@ -1124,18 +1129,18 @@
 typedef struct mapblock mapblock_T;
 struct mapblock
 {
-    mapblock_T	*m_next;	/* next mapblock in list */
-    char_u	*m_keys;	/* mapped from, lhs */
-    char_u	*m_str;		/* mapped to, rhs */
-    char_u	*m_orig_str;	/* rhs as entered by the user */
-    int		m_keylen;	/* strlen(m_keys) */
-    int		m_mode;		/* valid mode */
-    int		m_noremap;	/* if non-zero no re-mapping for m_str */
-    char	m_silent;	/* <silent> used, don't echo commands */
-    char	m_nowait;	/* <nowait> used */
+    mapblock_T	*m_next;	// next mapblock in list
+    char_u	*m_keys;	// mapped from, lhs
+    char_u	*m_str;		// mapped to, rhs
+    char_u	*m_orig_str;	// rhs as entered by the user
+    int		m_keylen;	// strlen(m_keys)
+    int		m_mode;		// valid mode
+    int		m_noremap;	// if non-zero no re-mapping for m_str
+    char	m_silent;	// <silent> used, don't echo commands
+    char	m_nowait;	// <nowait> used
 #ifdef FEAT_EVAL
-    char	m_expr;		/* <expr> used, m_str is an expression */
-    sctx_T	m_script_ctx;		/* SCTX where map was defined */
+    char	m_expr;		// <expr> used, m_str is an expression
+    sctx_T	m_script_ctx;	// SCTX where map was defined
 #endif
 };
 
@@ -1145,7 +1150,7 @@
 struct stl_hlrec
 {
     char_u	*start;
-    int		userhl;		/* 0: no HL, 1-9: User HL, < 0 for syn ID */
+    int		userhl;		// 0: no HL, 1-9: User HL, < 0 for syn ID
 };
 
 
@@ -1162,38 +1167,38 @@
  */
 typedef struct hashitem_S
 {
-    long_u	hi_hash;	/* cached hash number of hi_key */
+    long_u	hi_hash;	// cached hash number of hi_key
     char_u	*hi_key;
 } hashitem_T;
 
-/* The address of "hash_removed" is used as a magic number for hi_key to
- * indicate a removed item. */
+// The address of "hash_removed" is used as a magic number for hi_key to
+// indicate a removed item.
 #define HI_KEY_REMOVED &hash_removed
 #define HASHITEM_EMPTY(hi) ((hi)->hi_key == NULL || (hi)->hi_key == &hash_removed)
 
-/* Initial size for a hashtable.  Our items are relatively small and growing
- * is expensive, thus use 16 as a start.  Must be a power of 2. */
+// Initial size for a hashtable.  Our items are relatively small and growing
+// is expensive, thus use 16 as a start.  Must be a power of 2.
 #define HT_INIT_SIZE 16
 
 typedef struct hashtable_S
 {
-    long_u	ht_mask;	/* mask used for hash value (nr of items in
-				 * array is "ht_mask" + 1) */
-    long_u	ht_used;	/* number of items used */
-    long_u	ht_filled;	/* number of items used + removed */
-    int		ht_locked;	/* counter for hash_lock() */
-    int		ht_error;	/* when set growing failed, can't add more
-				   items before growing works */
-    hashitem_T	*ht_array;	/* points to the array, allocated when it's
-				   not "ht_smallarray" */
-    hashitem_T	ht_smallarray[HT_INIT_SIZE];   /* initial array */
+    long_u	ht_mask;	// mask used for hash value (nr of items in
+				// array is "ht_mask" + 1)
+    long_u	ht_used;	// number of items used
+    long_u	ht_filled;	// number of items used + removed
+    int		ht_locked;	// counter for hash_lock()
+    int		ht_error;	// when set growing failed, can't add more
+				// items before growing works
+    hashitem_T	*ht_array;	// points to the array, allocated when it's
+				// not "ht_smallarray"
+    hashitem_T	ht_smallarray[HT_INIT_SIZE];   // initial array
 } hashtab_T;
 
-typedef long_u hash_T;		/* Type for hi_hash */
+typedef long_u hash_T;		// Type for hi_hash
 
 
 #ifdef FEAT_NUM64
-/* Use 64-bit Number. */
+// Use 64-bit Number.
 # ifdef MSWIN
 #  ifdef PROTO
 typedef long		    varnumber_T;
@@ -1222,7 +1227,7 @@
 #  define UVARNUM_MAX	    ULONG_MAX
 # endif
 #else
-/* Use 32-bit Number. */
+// Use 32-bit Number.
 typedef int		    varnumber_T;
 typedef unsigned int	    uvarnumber_T;
 # define VARNUM_MIN	    INT_MIN
@@ -1277,33 +1282,33 @@
 typedef struct
 {
     vartype_T	v_type;
-    char	v_lock;	    /* see below: VAR_LOCKED, VAR_FIXED */
+    char	v_lock;	    // see below: VAR_LOCKED, VAR_FIXED
     union
     {
-	varnumber_T	v_number;	/* number value */
+	varnumber_T	v_number;	// number value
 #ifdef FEAT_FLOAT
-	float_T		v_float;	/* floating number value */
+	float_T		v_float;	// floating number value
 #endif
-	char_u		*v_string;	/* string value (can be NULL!) */
-	list_T		*v_list;	/* list value (can be NULL!) */
-	dict_T		*v_dict;	/* dict value (can be NULL!) */
-	partial_T	*v_partial;	/* closure: function with args */
+	char_u		*v_string;	// string value (can be NULL!)
+	list_T		*v_list;	// list value (can be NULL!)
+	dict_T		*v_dict;	// dict value (can be NULL!)
+	partial_T	*v_partial;	// closure: function with args
 #ifdef FEAT_JOB_CHANNEL
-	job_T		*v_job;		/* job value (can be NULL!) */
-	channel_T	*v_channel;	/* channel value (can be NULL!) */
+	job_T		*v_job;		// job value (can be NULL!)
+	channel_T	*v_channel;	// channel value (can be NULL!)
 #endif
-	blob_T		*v_blob;	/* blob value (can be NULL!) */
+	blob_T		*v_blob;	// blob value (can be NULL!)
     }		vval;
 } typval_T;
 
-/* Values for "dv_scope". */
-#define VAR_SCOPE     1	/* a:, v:, s:, etc. scope dictionaries */
-#define VAR_DEF_SCOPE 2	/* l:, g: scope dictionaries: here funcrefs are not
-			   allowed to mask existing functions */
+// Values for "dv_scope".
+#define VAR_SCOPE     1	// a:, v:, s:, etc. scope dictionaries
+#define VAR_DEF_SCOPE 2	// l:, g: scope dictionaries: here funcrefs are not
+			// allowed to mask existing functions
 
-/* Values for "v_lock". */
-#define VAR_LOCKED  1	/* locked with lock(), can use unlock() */
-#define VAR_FIXED   2	/* locked forever */
+// Values for "v_lock".
+#define VAR_LOCKED  1	// locked with lock(), can use unlock()
+#define VAR_FIXED   2	// locked forever
 
 /*
  * Structure to hold an item of a list: an internal variable without a name.
@@ -1312,20 +1317,18 @@
 
 struct listitem_S
 {
-    listitem_T	*li_next;	/* next item in list */
-    listitem_T	*li_prev;	/* previous item in list */
-    typval_T	li_tv;		/* type and value of the variable */
+    listitem_T	*li_next;	// next item in list
+    listitem_T	*li_prev;	// previous item in list
+    typval_T	li_tv;		// type and value of the variable
 };
 
-/*
- * Struct used by those that are using an item in a list.
- */
+// Struct used by those that are using an item in a list.
 typedef struct listwatch_S listwatch_T;
 
 struct listwatch_S
 {
-    listitem_T		*lw_item;	/* item being watched */
-    listwatch_T		*lw_next;	/* next watcher */
+    listitem_T		*lw_item;	// item being watched
+    listwatch_T		*lw_next;	// next watcher
 };
 
 /*
@@ -1334,25 +1337,25 @@
  */
 struct listvar_S
 {
-    listitem_T	*lv_first;	/* first item, NULL if none */
-    listitem_T	*lv_last;	/* last item, NULL if none */
-    listwatch_T	*lv_watch;	/* first watcher, NULL if none */
-    listitem_T	*lv_idx_item;	/* when not NULL item at index "lv_idx" */
-    list_T	*lv_copylist;	/* copied list used by deepcopy() */
-    list_T	*lv_used_next;	/* next list in used lists list */
-    list_T	*lv_used_prev;	/* previous list in used lists list */
-    int		lv_refcount;	/* reference count */
-    int		lv_len;		/* number of items */
-    int		lv_idx;		/* cached index of an item */
-    int		lv_copyID;	/* ID used by deepcopy() */
-    char	lv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
+    listitem_T	*lv_first;	// first item, NULL if none
+    listitem_T	*lv_last;	// last item, NULL if none
+    listwatch_T	*lv_watch;	// first watcher, NULL if none
+    listitem_T	*lv_idx_item;	// when not NULL item at index "lv_idx"
+    list_T	*lv_copylist;	// copied list used by deepcopy()
+    list_T	*lv_used_next;	// next list in used lists list
+    list_T	*lv_used_prev;	// previous list in used lists list
+    int		lv_refcount;	// reference count
+    int		lv_len;		// number of items
+    int		lv_idx;		// cached index of an item
+    int		lv_copyID;	// ID used by deepcopy()
+    char	lv_lock;	// zero, VAR_LOCKED, VAR_FIXED
 };
 
 /*
  * Static list with 10 items.  Use init_static_list() to initialize.
  */
 typedef struct {
-    list_T	sl_list;	/* must be first */
+    list_T	sl_list;	// must be first
     listitem_T	sl_items[10];
 } staticList10_T;
 
@@ -1363,9 +1366,9 @@
  */
 struct dictitem_S
 {
-    typval_T	di_tv;		/* type and value of the variable */
-    char_u	di_flags;	/* flags (only used for variable) */
-    char_u	di_key[1];	/* key (actually longer!) */
+    typval_T	di_tv;		// type and value of the variable
+    char_u	di_flags;	// flags (only used for variable)
+    char_u	di_key[1];	// key (actually longer!)
 };
 typedef struct dictitem_S dictitem_T;
 
@@ -1376,31 +1379,31 @@
 #define DICTITEM16_KEY_LEN 16
 struct dictitem16_S
 {
-    typval_T	di_tv;		/* type and value of the variable */
-    char_u	di_flags;	/* flags (only used for variable) */
-    char_u	di_key[DICTITEM16_KEY_LEN + 1];	/* key */
+    typval_T	di_tv;		// type and value of the variable
+    char_u	di_flags;	// flags (only used for variable)
+    char_u	di_key[DICTITEM16_KEY_LEN + 1];	// key
 };
 typedef struct dictitem16_S dictitem16_T;
 
-#define DI_FLAGS_RO	1  /* "di_flags" value: read-only variable */
-#define DI_FLAGS_RO_SBX 2  /* "di_flags" value: read-only in the sandbox */
-#define DI_FLAGS_FIX	4  /* "di_flags" value: fixed: no :unlet or remove() */
-#define DI_FLAGS_LOCK	8  /* "di_flags" value: locked variable */
-#define DI_FLAGS_ALLOC	16 /* "di_flags" value: separately allocated */
+#define DI_FLAGS_RO	1  // "di_flags" value: read-only variable
+#define DI_FLAGS_RO_SBX 2  // "di_flags" value: read-only in the sandbox
+#define DI_FLAGS_FIX	4  // "di_flags" value: fixed: no :unlet or remove()
+#define DI_FLAGS_LOCK	8  // "di_flags" value: locked variable
+#define DI_FLAGS_ALLOC	16 // "di_flags" value: separately allocated
 
 /*
  * Structure to hold info about a Dictionary.
  */
 struct dictvar_S
 {
-    char	dv_lock;	/* zero, VAR_LOCKED, VAR_FIXED */
-    char	dv_scope;	/* zero, VAR_SCOPE, VAR_DEF_SCOPE */
-    int		dv_refcount;	/* reference count */
-    int		dv_copyID;	/* ID used by deepcopy() */
-    hashtab_T	dv_hashtab;	/* hashtab that refers to the items */
-    dict_T	*dv_copydict;	/* copied dict used by deepcopy() */
-    dict_T	*dv_used_next;	/* next dict in used dicts list */
-    dict_T	*dv_used_prev;	/* previous dict in used dicts list */
+    char	dv_lock;	// zero, VAR_LOCKED, VAR_FIXED
+    char	dv_scope;	// zero, VAR_SCOPE, VAR_DEF_SCOPE
+    int		dv_refcount;	// reference count
+    int		dv_copyID;	// ID used by deepcopy()
+    hashtab_T	dv_hashtab;	// hashtab that refers to the items
+    dict_T	*dv_copydict;	// copied dict used by deepcopy()
+    dict_T	*dv_used_next;	// next dict in used dicts list
+    dict_T	*dv_used_prev;	// previous dict in used dicts list
 };
 
 /*
@@ -1462,35 +1465,35 @@
 /* structure to hold info for a function that is currently being executed. */
 struct funccall_S
 {
-    ufunc_T	*func;		/* function being called */
-    int		linenr;		/* next line to be executed */
-    int		returned;	/* ":return" used */
-    struct			/* fixed variables for arguments */
+    ufunc_T	*func;		// function being called
+    int		linenr;		// next line to be executed
+    int		returned;	// ":return" used
+    struct			// fixed variables for arguments
     {
-	dictitem_T	var;		/* variable (without room for name) */
-	char_u	room[VAR_SHORT_LEN];	/* room for the name */
+	dictitem_T	var;		// variable (without room for name)
+	char_u	room[VAR_SHORT_LEN];	// room for the name
     } fixvar[FIXVAR_CNT];
-    dict_T	l_vars;		/* l: local function variables */
-    dictitem_T	l_vars_var;	/* variable for l: scope */
-    dict_T	l_avars;	/* a: argument variables */
-    dictitem_T	l_avars_var;	/* variable for a: scope */
-    list_T	l_varlist;	/* list for a:000 */
-    listitem_T	l_listitems[MAX_FUNC_ARGS];	/* listitems for a:000 */
-    typval_T	*rettv;		/* return value */
-    linenr_T	breakpoint;	/* next line with breakpoint or zero */
-    int		dbg_tick;	/* debug_tick when breakpoint was set */
-    int		level;		/* top nesting level of executed function */
+    dict_T	l_vars;		// l: local function variables
+    dictitem_T	l_vars_var;	// variable for l: scope
+    dict_T	l_avars;	// a: argument variables
+    dictitem_T	l_avars_var;	// variable for a: scope
+    list_T	l_varlist;	// list for a:000
+    listitem_T	l_listitems[MAX_FUNC_ARGS];	// listitems for a:000
+    typval_T	*rettv;		// return value
+    linenr_T	breakpoint;	// next line with breakpoint or zero
+    int		dbg_tick;	// debug_tick when breakpoint was set
+    int		level;		// top nesting level of executed function
 #ifdef FEAT_PROFILE
-    proftime_T	prof_child;	/* time spent in a child */
+    proftime_T	prof_child;	// time spent in a child
 #endif
-    funccall_T	*caller;	/* calling function or NULL */
+    funccall_T	*caller;	// calling function or NULL
 
-    /* for closure */
-    int		fc_refcount;	/* number of user functions that reference this
-				 * funccal */
-    int		fc_copyID;	/* for garbage collection */
-    garray_T	fc_funcs;	/* list of ufunc_T* which keep a reference to
-				 * "func" */
+    // for closure
+    int		fc_refcount;	// number of user functions that reference this
+				// funccal
+    int		fc_copyID;	// for garbage collection
+    garray_T	fc_funcs;	// list of ufunc_T* which keep a reference to
+				// "func"
 };
 
 /*
@@ -1498,9 +1501,9 @@
  */
 typedef struct
 {
-    dict_T	*fd_dict;	/* Dictionary used */
-    char_u	*fd_newkey;	/* new key in "dict" in allocated memory */
-    dictitem_T	*fd_di;		/* Dictionary item used */
+    dict_T	*fd_dict;	// Dictionary used
+    char_u	*fd_newkey;	// new key in "dict" in allocated memory
+    dictitem_T	*fd_di;		// Dictionary item used
 } funcdict_T;
 
 typedef struct funccal_entry funccal_entry_T;
@@ -1510,7 +1513,7 @@
 };
 
 #else
-/* dummy typedefs for function prototypes */
+// dummy typedefs for use in function prototypes
 typedef struct
 {
     int	    dummy;
@@ -1527,27 +1530,27 @@
 
 struct partial_S
 {
-    int		pt_refcount;	/* reference count */
-    char_u	*pt_name;	/* function name; when NULL use
-				 * pt_func->uf_name */
-    ufunc_T	*pt_func;	/* function pointer; when NULL lookup function
-				 * with pt_name */
-    int		pt_auto;	/* when TRUE the partial was created for using
-				   dict.member in handle_subscript() */
-    int		pt_argc;	/* number of arguments */
-    typval_T	*pt_argv;	/* arguments in allocated array */
-    dict_T	*pt_dict;	/* dict for "self" */
+    int		pt_refcount;	// reference count
+    char_u	*pt_name;	// function name; when NULL use
+				// pt_func->uf_name
+    ufunc_T	*pt_func;	// function pointer; when NULL lookup function
+				// with pt_name
+    int		pt_auto;	// when TRUE the partial was created for using
+				// dict.member in handle_subscript()
+    int		pt_argc;	// number of arguments
+    typval_T	*pt_argv;	// arguments in allocated array
+    dict_T	*pt_dict;	// dict for "self"
 };
 
-/* Information returned by get_tty_info(). */
+// Information returned by get_tty_info().
 typedef struct {
-    int backspace;	/* what the Backspace key produces */
-    int enter;		/* what the Enter key produces */
-    int interrupt;	/* interrupt character */
-    int nl_does_cr;	/* TRUE when a NL is expanded to CR-NL on output */
+    int backspace;	// what the Backspace key produces
+    int enter;		// what the Enter key produces
+    int interrupt;	// interrupt character
+    int nl_does_cr;	// TRUE when a NL is expanded to CR-NL on output
 } ttyinfo_T;
 
-/* Status of a job.  Order matters! */
+// Status of a job.  Order matters!
 typedef enum
 {
     JOB_FAILED,
@@ -1570,12 +1573,12 @@
     PROCESS_INFORMATION	jv_proc_info;
     HANDLE		jv_job_object;
 #endif
-    char_u	*jv_tty_in;	/* controlling tty input, allocated */
-    char_u	*jv_tty_out;	/* controlling tty output, allocated */
+    char_u	*jv_tty_in;	// controlling tty input, allocated
+    char_u	*jv_tty_out;	// controlling tty output, allocated
     jobstatus_T	jv_status;
-    char_u	*jv_stoponexit;	/* allocated */
+    char_u	*jv_stoponexit;	// allocated
 #ifdef UNIX
-    char_u	*jv_termsig;	/* allocated */
+    char_u	*jv_termsig;	// allocated
 #endif
 #ifdef MSWIN
     char_u	*jv_tty_type;	// allocated
@@ -1583,13 +1586,13 @@
     int		jv_exitval;
     callback_T	jv_exit_cb;
 
-    buf_T	*jv_in_buf;	/* buffer from "in-name" */
+    buf_T	*jv_in_buf;	// buffer from "in-name"
 
-    int		jv_refcount;	/* reference count */
+    int		jv_refcount;	// reference count
     int		jv_copyID;
 
-    channel_T	*jv_channel;	/* channel for I/O, reference counted */
-    char	**jv_argv;	/* command line used to start the job */
+    channel_T	*jv_channel;	// channel for I/O, reference counted
+    char	**jv_argv;	// command line used to start the job
 };
 
 /*
@@ -1615,7 +1618,7 @@
     typval_T	*jq_value;
     jsonq_T	*jq_next;
     jsonq_T	*jq_prev;
-    int		jq_no_callback; /* TRUE when no callback was found */
+    int		jq_no_callback; // TRUE when no callback was found
 };
 
 struct cbq_S
@@ -1626,7 +1629,7 @@
     cbq_T	*cq_prev;
 };
 
-/* mode for a channel */
+// mode for a channel
 typedef enum
 {
     MODE_NL = 0,
@@ -1645,8 +1648,8 @@
 
 #define CH_PART_FD(part)	ch_part[part].ch_fd
 
-/* Ordering matters, it is used in for loops: IN is last, only SOCK/OUT/ERR
- * are polled. */
+// Ordering matters, it is used in for loops: IN is last, only SOCK/OUT/ERR
+// are polled.
 typedef enum {
     PART_SOCK = 0,
 #define CH_SOCK_FD	CH_PART_FD(PART_SOCK)
@@ -1663,90 +1666,90 @@
 
 #define INVALID_FD	(-1)
 
-/* The per-fd info for a channel. */
+// The per-fd info for a channel.
 typedef struct {
-    sock_T	ch_fd;	    /* socket/stdin/stdout/stderr, -1 if not used */
+    sock_T	ch_fd;	    // socket/stdin/stdout/stderr, -1 if not used
 
 # if defined(UNIX) && !defined(HAVE_SELECT)
-    int		ch_poll_idx;	/* used by channel_poll_setup() */
+    int		ch_poll_idx;	// used by channel_poll_setup()
 # endif
 
 #ifdef FEAT_GUI_X11
-    XtInputId	ch_inputHandler; /* Cookie for input */
+    XtInputId	ch_inputHandler; // Cookie for input
 #endif
 #ifdef FEAT_GUI_GTK
-    gint	ch_inputHandler; /* Cookie for input */
+    gint	ch_inputHandler; // Cookie for input
 #endif
 
     ch_mode_T	ch_mode;
     job_io_T	ch_io;
-    int		ch_timeout;	/* request timeout in msec */
+    int		ch_timeout;	// request timeout in msec
 
-    readq_T	ch_head;	/* header for circular raw read queue */
-    jsonq_T	ch_json_head;	/* header for circular json read queue */
-    garray_T	ch_block_ids;	/* list of IDs that channel_read_json_block()
-				   is waiting for */
-    /* When ch_wait_len is non-zero use ch_deadline to wait for incomplete
-     * message to be complete. The value is the length of the incomplete
-     * message when the deadline was set.  If it gets longer (something was
-     * received) the deadline is reset. */
+    readq_T	ch_head;	// header for circular raw read queue
+    jsonq_T	ch_json_head;	// header for circular json read queue
+    garray_T	ch_block_ids;	// list of IDs that channel_read_json_block()
+				// is waiting for
+    // When ch_wait_len is non-zero use ch_deadline to wait for incomplete
+    // message to be complete. The value is the length of the incomplete
+    // message when the deadline was set.  If it gets longer (something was
+    // received) the deadline is reset.
     size_t	ch_wait_len;
 #ifdef MSWIN
     DWORD	ch_deadline;
 #else
     struct timeval ch_deadline;
 #endif
-    int		ch_block_write;	/* for testing: 0 when not used, -1 when write
-				 * does not block, 1 simulate blocking */
-    int		ch_nonblocking;	/* write() is non-blocking */
-    writeq_T	ch_writeque;	/* header for write queue */
+    int		ch_block_write;	// for testing: 0 when not used, -1 when write
+				// does not block, 1 simulate blocking
+    int		ch_nonblocking;	// write() is non-blocking
+    writeq_T	ch_writeque;	// header for write queue
 
-    cbq_T	ch_cb_head;	/* dummy node for per-request callbacks */
-    callback_T	ch_callback;	/* call when a msg is not handled */
+    cbq_T	ch_cb_head;	// dummy node for per-request callbacks
+    callback_T	ch_callback;	// call when a msg is not handled
 
-    bufref_T	ch_bufref;	/* buffer to read from or write to */
-    int		ch_nomodifiable; /* TRUE when buffer can be 'nomodifiable' */
-    int		ch_nomod_error;	/* TRUE when e_modifiable was given */
-    int		ch_buf_append;	/* write appended lines instead top-bot */
-    linenr_T	ch_buf_top;	/* next line to send */
-    linenr_T	ch_buf_bot;	/* last line to send */
+    bufref_T	ch_bufref;	// buffer to read from or write to
+    int		ch_nomodifiable; // TRUE when buffer can be 'nomodifiable'
+    int		ch_nomod_error;	// TRUE when e_modifiable was given
+    int		ch_buf_append;	// write appended lines instead top-bot
+    linenr_T	ch_buf_top;	// next line to send
+    linenr_T	ch_buf_bot;	// last line to send
 } chanpart_T;
 
 struct channel_S {
     channel_T	*ch_next;
     channel_T	*ch_prev;
 
-    int		ch_id;		/* ID of the channel */
-    int		ch_last_msg_id;	/* ID of the last message */
+    int		ch_id;		// ID of the channel
+    int		ch_last_msg_id;	// ID of the last message
 
-    chanpart_T	ch_part[PART_COUNT]; /* info for socket, out, err and in */
-    int		ch_write_text_mode; /* write buffer lines with CR, not NL */
+    chanpart_T	ch_part[PART_COUNT]; // info for socket, out, err and in
+    int		ch_write_text_mode; // write buffer lines with CR, not NL
 
-    char	*ch_hostname;	/* only for socket, allocated */
-    int		ch_port;	/* only for socket */
+    char	*ch_hostname;	// only for socket, allocated
+    int		ch_port;	// only for socket
 
-    int		ch_to_be_closed; /* bitset of readable fds to be closed.
-				  * When all readable fds have been closed,
-				  * set to (1 << PART_COUNT). */
-    int		ch_to_be_freed; /* When TRUE channel must be freed when it's
-				 * safe to invoke callbacks. */
-    int		ch_error;	/* When TRUE an error was reported.  Avoids
-				 * giving pages full of error messages when
-				 * the other side has exited, only mention the
-				 * first error until the connection works
-				 * again. */
+    int		ch_to_be_closed; // bitset of readable fds to be closed.
+				 // When all readable fds have been closed,
+				 // set to (1 << PART_COUNT).
+    int		ch_to_be_freed; // When TRUE channel must be freed when it's
+				// safe to invoke callbacks.
+    int		ch_error;	// When TRUE an error was reported.  Avoids
+				// giving pages full of error messages when
+				// the other side has exited, only mention the
+				// first error until the connection works
+				// again.
 
     void	(*ch_nb_close_cb)(void);
-				/* callback for Netbeans when channel is
-				 * closed */
+				// callback for Netbeans when channel is
+				// closed
 
 #ifdef MSWIN
-    int		ch_named_pipe;	/* using named pipe instead of pty */
+    int		ch_named_pipe;	// using named pipe instead of pty
 #endif
-    callback_T	ch_callback;	/* call when any msg is not handled */
-    callback_T	ch_close_cb;	/* call when channel is closed */
+    callback_T	ch_callback;	// call when any msg is not handled
+    callback_T	ch_close_cb;	// call when channel is closed
     int		ch_drop_never;
-    int		ch_keep_open;	/* do not close on read error */
+    int		ch_keep_open;	// do not close on read error
     int		ch_nonblock;
 
     job_T	*ch_job;	// Job that uses this channel; this does not
@@ -1761,57 +1764,57 @@
     int		ch_copyID;
 };
 
-#define JO_MODE		    0x0001	/* channel mode */
-#define JO_IN_MODE	    0x0002	/* stdin mode */
-#define JO_OUT_MODE	    0x0004	/* stdout mode */
-#define JO_ERR_MODE	    0x0008	/* stderr mode */
-#define JO_CALLBACK	    0x0010	/* channel callback */
-#define JO_OUT_CALLBACK	    0x0020	/* stdout callback */
-#define JO_ERR_CALLBACK	    0x0040	/* stderr callback */
-#define JO_CLOSE_CALLBACK   0x0080	/* "close_cb" */
-#define JO_WAITTIME	    0x0100	/* only for ch_open() */
-#define JO_TIMEOUT	    0x0200	/* all timeouts */
-#define JO_OUT_TIMEOUT	    0x0400	/* stdout timeouts */
-#define JO_ERR_TIMEOUT	    0x0800	/* stderr timeouts */
-#define JO_PART		    0x1000	/* "part" */
-#define JO_ID		    0x2000	/* "id" */
-#define JO_STOPONEXIT	    0x4000	/* "stoponexit" */
-#define JO_EXIT_CB	    0x8000	/* "exit_cb" */
-#define JO_OUT_IO	    0x10000	/* "out_io" */
-#define JO_ERR_IO	    0x20000	/* "err_io" (JO_OUT_IO << 1) */
-#define JO_IN_IO	    0x40000	/* "in_io" (JO_OUT_IO << 2) */
-#define JO_OUT_NAME	    0x80000	/* "out_name" */
-#define JO_ERR_NAME	    0x100000	/* "err_name" (JO_OUT_NAME << 1) */
-#define JO_IN_NAME	    0x200000	/* "in_name" (JO_OUT_NAME << 2) */
-#define JO_IN_TOP	    0x400000	/* "in_top" */
-#define JO_IN_BOT	    0x800000	/* "in_bot" */
-#define JO_OUT_BUF	    0x1000000	/* "out_buf" */
-#define JO_ERR_BUF	    0x2000000	/* "err_buf" (JO_OUT_BUF << 1) */
-#define JO_IN_BUF	    0x4000000	/* "in_buf" (JO_OUT_BUF << 2) */
-#define JO_CHANNEL	    0x8000000	/* "channel" */
-#define JO_BLOCK_WRITE	    0x10000000	/* "block_write" */
-#define JO_OUT_MODIFIABLE   0x20000000	/* "out_modifiable" */
-#define JO_ERR_MODIFIABLE   0x40000000	/* "err_modifiable" (JO_OUT_ << 1) */
+#define JO_MODE		    0x0001	// channel mode
+#define JO_IN_MODE	    0x0002	// stdin mode
+#define JO_OUT_MODE	    0x0004	// stdout mode
+#define JO_ERR_MODE	    0x0008	// stderr mode
+#define JO_CALLBACK	    0x0010	// channel callback
+#define JO_OUT_CALLBACK	    0x0020	// stdout callback
+#define JO_ERR_CALLBACK	    0x0040	// stderr callback
+#define JO_CLOSE_CALLBACK   0x0080	// "close_cb"
+#define JO_WAITTIME	    0x0100	// only for ch_open()
+#define JO_TIMEOUT	    0x0200	// all timeouts
+#define JO_OUT_TIMEOUT	    0x0400	// stdout timeouts
+#define JO_ERR_TIMEOUT	    0x0800	// stderr timeouts
+#define JO_PART		    0x1000	// "part"
+#define JO_ID		    0x2000	// "id"
+#define JO_STOPONEXIT	    0x4000	// "stoponexit"
+#define JO_EXIT_CB	    0x8000	// "exit_cb"
+#define JO_OUT_IO	    0x10000	// "out_io"
+#define JO_ERR_IO	    0x20000	// "err_io" (JO_OUT_IO << 1)
+#define JO_IN_IO	    0x40000	// "in_io" (JO_OUT_IO << 2)
+#define JO_OUT_NAME	    0x80000	// "out_name"
+#define JO_ERR_NAME	    0x100000	// "err_name" (JO_OUT_NAME << 1)
+#define JO_IN_NAME	    0x200000	// "in_name" (JO_OUT_NAME << 2)
+#define JO_IN_TOP	    0x400000	// "in_top"
+#define JO_IN_BOT	    0x800000	// "in_bot"
+#define JO_OUT_BUF	    0x1000000	// "out_buf"
+#define JO_ERR_BUF	    0x2000000	// "err_buf" (JO_OUT_BUF << 1)
+#define JO_IN_BUF	    0x4000000	// "in_buf" (JO_OUT_BUF << 2)
+#define JO_CHANNEL	    0x8000000	// "channel"
+#define JO_BLOCK_WRITE	    0x10000000	// "block_write"
+#define JO_OUT_MODIFIABLE   0x20000000	// "out_modifiable"
+#define JO_ERR_MODIFIABLE   0x40000000	// "err_modifiable" (JO_OUT_ << 1)
 #define JO_ALL		    0x7fffffff
 
-#define JO2_OUT_MSG	    0x0001	/* "out_msg" */
-#define JO2_ERR_MSG	    0x0002	/* "err_msg" (JO_OUT_ << 1) */
-#define JO2_TERM_NAME	    0x0004	/* "term_name" */
-#define JO2_TERM_FINISH	    0x0008	/* "term_finish" */
-#define JO2_ENV		    0x0010	/* "env" */
-#define JO2_CWD		    0x0020	/* "cwd" */
-#define JO2_TERM_ROWS	    0x0040	/* "term_rows" */
-#define JO2_TERM_COLS	    0x0080	/* "term_cols" */
-#define JO2_VERTICAL	    0x0100	/* "vertical" */
-#define JO2_CURWIN	    0x0200	/* "curwin" */
-#define JO2_HIDDEN	    0x0400	/* "hidden" */
-#define JO2_TERM_OPENCMD    0x0800	/* "term_opencmd" */
-#define JO2_EOF_CHARS	    0x1000	/* "eof_chars" */
-#define JO2_NORESTORE	    0x2000	/* "norestore" */
-#define JO2_TERM_KILL	    0x4000	/* "term_kill" */
-#define JO2_ANSI_COLORS	    0x8000	/* "ansi_colors" */
-#define JO2_TTY_TYPE	    0x10000	/* "tty_type" */
-#define JO2_BUFNR	    0x20000	/* "bufnr" */
+#define JO2_OUT_MSG	    0x0001	// "out_msg"
+#define JO2_ERR_MSG	    0x0002	// "err_msg" (JO_OUT_ << 1)
+#define JO2_TERM_NAME	    0x0004	// "term_name"
+#define JO2_TERM_FINISH	    0x0008	// "term_finish"
+#define JO2_ENV		    0x0010	// "env"
+#define JO2_CWD		    0x0020	// "cwd"
+#define JO2_TERM_ROWS	    0x0040	// "term_rows"
+#define JO2_TERM_COLS	    0x0080	// "term_cols"
+#define JO2_VERTICAL	    0x0100	// "vertical"
+#define JO2_CURWIN	    0x0200	// "curwin"
+#define JO2_HIDDEN	    0x0400	// "hidden"
+#define JO2_TERM_OPENCMD    0x0800	// "term_opencmd"
+#define JO2_EOF_CHARS	    0x1000	// "eof_chars"
+#define JO2_NORESTORE	    0x2000	// "norestore"
+#define JO2_TERM_KILL	    0x4000	// "term_kill"
+#define JO2_ANSI_COLORS	    0x8000	// "ansi_colors"
+#define JO2_TTY_TYPE	    0x10000	// "tty_type"
+#define JO2_BUFNR	    0x20000	// "bufnr"
 
 #define JO_MODE_ALL	(JO_MODE + JO_IN_MODE + JO_OUT_MODE + JO_ERR_MODE)
 #define JO_CB_ALL \
@@ -1823,8 +1826,8 @@
  */
 typedef struct
 {
-    int		jo_set;		/* JO_ bits for values that were set */
-    int		jo_set2;	/* JO2_ bits for values that were set */
+    int		jo_set;		// JO_ bits for values that were set
+    int		jo_set2;	// JO2_ bits for values that were set
 
     ch_mode_T	jo_mode;
     ch_mode_T	jo_in_mode;
@@ -1832,9 +1835,9 @@
     ch_mode_T	jo_err_mode;
     int		jo_noblock;
 
-    job_io_T	jo_io[4];	/* PART_OUT, PART_ERR, PART_IN */
+    job_io_T	jo_io[4];	// PART_OUT, PART_ERR, PART_IN
     char_u	jo_io_name_buf[4][NUMBUFLEN];
-    char_u	*jo_io_name[4];	/* not allocated! */
+    char_u	*jo_io_name[4];	// not allocated!
     int		jo_io_buf[4];
     int		jo_pty;
     int		jo_modifiable[4];
@@ -1854,17 +1857,17 @@
     int		jo_timeout;
     int		jo_out_timeout;
     int		jo_err_timeout;
-    int		jo_block_write;	/* for testing only */
+    int		jo_block_write;	// for testing only
     int		jo_part;
     int		jo_id;
     char_u	jo_soe_buf[NUMBUFLEN];
     char_u	*jo_stoponexit;
-    dict_T	*jo_env;	/* environment variables */
+    dict_T	*jo_env;	// environment variables
     char_u	jo_cwd_buf[NUMBUFLEN];
     char_u	*jo_cwd;
 
 #ifdef FEAT_TERMINAL
-    /* when non-zero run the job in a terminal window of this size */
+    // when non-zero run the job in a terminal window of this size
     int		jo_term_rows;
     int		jo_term_cols;
     int		jo_vertical;
@@ -1897,14 +1900,18 @@
 };
 #endif
 
-/* structure used for explicit stack while garbage collecting hash tables */
+/*
+ * structure used for explicit stack while garbage collecting hash tables
+ */
 typedef struct ht_stack_S
 {
     hashtab_T		*ht;
     struct ht_stack_S	*prev;
 } ht_stack_T;
 
-/* structure used for explicit stack while garbage collecting lists */
+/*
+ * structure used for explicit stack while garbage collecting lists
+ */
 typedef struct list_stack_S
 {
     list_T		*list;
@@ -1921,12 +1928,12 @@
     hashitem_T	*dit_hi;
 } dict_iterator_T;
 
-/* values for b_syn_spell: what to do with toplevel text */
-#define SYNSPL_DEFAULT	0	/* spell check if @Spell not defined */
-#define SYNSPL_TOP	1	/* spell check toplevel text */
-#define SYNSPL_NOTOP	2	/* don't spell check toplevel text */
+// values for b_syn_spell: what to do with toplevel text
+#define SYNSPL_DEFAULT	0	// spell check if @Spell not defined
+#define SYNSPL_TOP	1	// spell check toplevel text
+#define SYNSPL_NOTOP	2	// don't spell check toplevel text
 
-/* avoid #ifdefs for when b_spell is not available */
+// avoid #ifdefs for when b_spell is not available
 #ifdef FEAT_SPELL
 # define B_SPELL(buf)  ((buf)->b_spell)
 #else
@@ -1942,10 +1949,10 @@
  * Used for :syntime: timing of executing a syntax pattern.
  */
 typedef struct {
-    proftime_T	total;		/* total time used */
-    proftime_T	slowest;	/* time of slowest call */
-    long	count;		/* nr of times used */
-    long	match;		/* nr of times matched */
+    proftime_T	total;		// total time used
+    proftime_T	slowest;	// time of slowest call
+    long	count;		// nr of times used
+    long	match;		// nr of times matched
 } syn_time_T;
 #endif
 
@@ -1973,14 +1980,14 @@
  */
 typedef struct {
     int	    method_nr;
-    void    *method_state;  /* method-specific state information */
+    void    *method_state;  // method-specific state information
 } cryptstate_T;
 
-/* values for method_nr */
+// values for method_nr
 # define CRYPT_M_ZIP	0
 # define CRYPT_M_BF	1
 # define CRYPT_M_BF2	2
-# define CRYPT_M_COUNT	3 /* number of crypt methods */
+# define CRYPT_M_COUNT	3 // number of crypt methods
 
 // Currently all crypt methods work inplace.  If one is added that isn't then
 // define this.
@@ -2014,38 +2021,38 @@
  */
 typedef struct {
 #ifdef FEAT_SYN_HL
-    hashtab_T	b_keywtab;		/* syntax keywords hash table */
-    hashtab_T	b_keywtab_ic;		/* idem, ignore case */
-    int		b_syn_error;		/* TRUE when error occurred in HL */
+    hashtab_T	b_keywtab;		// syntax keywords hash table
+    hashtab_T	b_keywtab_ic;		// idem, ignore case
+    int		b_syn_error;		// TRUE when error occurred in HL
 # ifdef FEAT_RELTIME
-    int		b_syn_slow;		/* TRUE when 'redrawtime' reached */
+    int		b_syn_slow;		// TRUE when 'redrawtime' reached
 # endif
-    int		b_syn_ic;		/* ignore case for :syn cmds */
-    int		b_syn_spell;		/* SYNSPL_ values */
-    garray_T	b_syn_patterns;		/* table for syntax patterns */
-    garray_T	b_syn_clusters;		/* table for syntax clusters */
-    int		b_spell_cluster_id;	/* @Spell cluster ID or 0 */
-    int		b_nospell_cluster_id;	/* @NoSpell cluster ID or 0 */
-    int		b_syn_containedin;	/* TRUE when there is an item with a
-					   "containedin" argument */
-    int		b_syn_sync_flags;	/* flags about how to sync */
-    short	b_syn_sync_id;		/* group to sync on */
-    long	b_syn_sync_minlines;	/* minimal sync lines offset */
-    long	b_syn_sync_maxlines;	/* maximal sync lines offset */
-    long	b_syn_sync_linebreaks;	/* offset for multi-line pattern */
-    char_u	*b_syn_linecont_pat;	/* line continuation pattern */
-    regprog_T	*b_syn_linecont_prog;	/* line continuation program */
+    int		b_syn_ic;		// ignore case for :syn cmds
+    int		b_syn_spell;		// SYNSPL_ values
+    garray_T	b_syn_patterns;		// table for syntax patterns
+    garray_T	b_syn_clusters;		// table for syntax clusters
+    int		b_spell_cluster_id;	// @Spell cluster ID or 0
+    int		b_nospell_cluster_id;	// @NoSpell cluster ID or 0
+    int		b_syn_containedin;	// TRUE when there is an item with a
+					// "containedin" argument
+    int		b_syn_sync_flags;	// flags about how to sync
+    short	b_syn_sync_id;		// group to sync on
+    long	b_syn_sync_minlines;	// minimal sync lines offset
+    long	b_syn_sync_maxlines;	// maximal sync lines offset
+    long	b_syn_sync_linebreaks;	// offset for multi-line pattern
+    char_u	*b_syn_linecont_pat;	// line continuation pattern
+    regprog_T	*b_syn_linecont_prog;	// line continuation program
 #ifdef FEAT_PROFILE
     syn_time_T  b_syn_linecont_time;
 #endif
-    int		b_syn_linecont_ic;	/* ignore-case flag for above */
-    int		b_syn_topgrp;		/* for ":syntax include" */
+    int		b_syn_linecont_ic;	// ignore-case flag for above
+    int		b_syn_topgrp;		// for ":syntax include"
 # ifdef FEAT_CONCEAL
-    int		b_syn_conceal;		/* auto-conceal for :syn cmds */
+    int		b_syn_conceal;		// auto-conceal for :syn cmds
 # endif
 # ifdef FEAT_FOLDING
-    int		b_syn_folditems;	/* number of patterns with the HL_FOLD
-					   flag set */
+    int		b_syn_folditems;	// number of patterns with the HL_FOLD
+					// flag set
 # endif
     /*
      * b_sst_array[] contains the state stack for a number of lines, for the
@@ -2067,25 +2074,25 @@
     synstate_T	*b_sst_firstfree;
     int		b_sst_freecount;
     linenr_T	b_sst_check_lnum;
-    short_u	b_sst_lasttick;	/* last display tick */
-#endif /* FEAT_SYN_HL */
+    short_u	b_sst_lasttick;	// last display tick
+#endif // FEAT_SYN_HL
 
 #ifdef FEAT_SPELL
-    /* for spell checking */
-    garray_T	b_langp;	/* list of pointers to slang_T, see spell.c */
-    char_u	b_spell_ismw[256];/* flags: is midword char */
-    char_u	*b_spell_ismw_mb; /* multi-byte midword chars */
-    char_u	*b_p_spc;	/* 'spellcapcheck' */
-    regprog_T	*b_cap_prog;	/* program for 'spellcapcheck' */
-    char_u	*b_p_spf;	/* 'spellfile' */
-    char_u	*b_p_spl;	/* 'spelllang' */
-    int		b_cjk;		/* all CJK letters as OK */
+    // for spell checking
+    garray_T	b_langp;	    // list of pointers to slang_T, see spell.c
+    char_u	b_spell_ismw[256];  // flags: is midword char
+    char_u	*b_spell_ismw_mb;   // multi-byte midword chars
+    char_u	*b_p_spc;	    // 'spellcapcheck'
+    regprog_T	*b_cap_prog;	    // program for 'spellcapcheck'
+    char_u	*b_p_spf;	    // 'spellfile'
+    char_u	*b_p_spl;	    // 'spelllang'
+    int		b_cjk;		    // all CJK letters as OK
 #endif
 #if !defined(FEAT_SYN_HL) && !defined(FEAT_SPELL)
     int		dummy;
 #endif
-    char_u	b_syn_chartab[32];	/* syntax iskeyword option */
-    char_u	*b_syn_isk;		/* iskeyword option */
+    char_u	b_syn_chartab[32];  // syntax iskeyword option
+    char_u	*b_syn_isk;	    // iskeyword option
 } synblock_T;
 
 
@@ -2099,17 +2106,17 @@
 
 struct file_buffer
 {
-    memline_T	b_ml;		/* associated memline (also contains line
-				   count) */
+    memline_T	b_ml;		// associated memline (also contains line
+				// count)
 
-    buf_T	*b_next;	/* links in list of buffers */
+    buf_T	*b_next;	// links in list of buffers
     buf_T	*b_prev;
 
-    int		b_nwindows;	/* nr of windows open on this buffer */
+    int		b_nwindows;	// nr of windows open on this buffer
 
-    int		b_flags;	/* various BF_ flags */
-    int		b_locked;	/* Buffer is being closed or referenced, don't
-				   let autocommands wipe it out. */
+    int		b_flags;	// various BF_ flags
+    int		b_locked;	// Buffer is being closed or referenced, don't
+				// let autocommands wipe it out.
 
     /*
      * b_ffname has the full path of the file (NULL for no name).
@@ -2124,83 +2131,83 @@
 				// b_sfname
 
 #ifdef UNIX
-    int		b_dev_valid;	/* TRUE when b_dev has a valid number */
-    dev_t	b_dev;		/* device number */
-    ino_t	b_ino;		/* inode number */
+    int		b_dev_valid;	// TRUE when b_dev has a valid number
+    dev_t	b_dev;		// device number
+    ino_t	b_ino;		// inode number
 #endif
 #ifdef FEAT_CW_EDITOR
-    FSSpec	b_FSSpec;	/* MacOS File Identification */
+    FSSpec	b_FSSpec;	// MacOS File Identification
 #endif
 #ifdef VMS
-    char	 b_fab_rfm;	/* Record format    */
-    char	 b_fab_rat;	/* Record attribute */
-    unsigned int b_fab_mrs;	/* Max record size  */
+    char	 b_fab_rfm;	// Record format
+    char	 b_fab_rat;	// Record attribute
+    unsigned int b_fab_mrs;	// Max record size
 #endif
-    int		b_fnum;		/* buffer number for this file. */
+    int		b_fnum;		// buffer number for this file.
     char_u	b_key[VIM_SIZEOF_INT * 2 + 1];
-				/* key used for buf_hashtab, holds b_fnum as
-				   hex string */
+				// key used for buf_hashtab, holds b_fnum as
+				// hex string
 
-    int		b_changed;	/* 'modified': Set to TRUE if something in the
-				   file has been changed and not written out. */
-    dictitem16_T b_ct_di;	/* holds the b:changedtick value in
-				   b_ct_di.di_tv.vval.v_number;
-				   incremented for each change, also for undo */
+    int		b_changed;	// 'modified': Set to TRUE if something in the
+				// file has been changed and not written out.
+    dictitem16_T b_ct_di;	// holds the b:changedtick value in
+				// b_ct_di.di_tv.vval.v_number;
+				// incremented for each change, also for undo
 #define CHANGEDTICK(buf) ((buf)->b_ct_di.di_tv.vval.v_number)
 
-    varnumber_T	b_last_changedtick; /* b:changedtick when TextChanged or
-				       TextChangedI was last triggered. */
+    varnumber_T	b_last_changedtick; // b:changedtick when TextChanged or
+				    // TextChangedI was last triggered.
 #ifdef FEAT_INS_EXPAND
-    varnumber_T	b_last_changedtick_pum; /* b:changedtick when TextChangedP was
-					   last triggered. */
+    varnumber_T	b_last_changedtick_pum; // b:changedtick when TextChangedP was
+					// last triggered.
 #endif
 
-    int		b_saving;	/* Set to TRUE if we are in the middle of
-				   saving the buffer. */
+    int		b_saving;	// Set to TRUE if we are in the middle of
+				// saving the buffer.
 
     /*
      * Changes to a buffer require updating of the display.  To minimize the
      * work, remember changes made and update everything at once.
      */
-    int		b_mod_set;	/* TRUE when there are changes since the last
-				   time the display was updated */
-    linenr_T	b_mod_top;	/* topmost lnum that was changed */
-    linenr_T	b_mod_bot;	/* lnum below last changed line, AFTER the
-				   change */
-    long	b_mod_xlines;	/* number of extra buffer lines inserted;
-				   negative when lines were deleted */
+    int		b_mod_set;	// TRUE when there are changes since the last
+				// time the display was updated
+    linenr_T	b_mod_top;	// topmost lnum that was changed
+    linenr_T	b_mod_bot;	// lnum below last changed line, AFTER the
+				// change
+    long	b_mod_xlines;	// number of extra buffer lines inserted;
+				// negative when lines were deleted
 
-    wininfo_T	*b_wininfo;	/* list of last used info for each window */
+    wininfo_T	*b_wininfo;	// list of last used info for each window
 
-    long	b_mtime;	/* last change time of original file */
-    long	b_mtime_read;	/* last change time when reading */
-    off_T	b_orig_size;	/* size of original file in bytes */
-    int		b_orig_mode;	/* mode of original file */
+    long	b_mtime;	// last change time of original file
+    long	b_mtime_read;	// last change time when reading
+    off_T	b_orig_size;	// size of original file in bytes
+    int		b_orig_mode;	// mode of original file
 #ifdef FEAT_VIMINFO
-    time_T	b_last_used;	/* time when the buffer was last used; used
-				 * for viminfo */
+    time_T	b_last_used;	// time when the buffer was last used; used
+				// for viminfo
 #endif
 
-    pos_T	b_namedm[NMARKS]; /* current named marks (mark.c) */
+    pos_T	b_namedm[NMARKS]; // current named marks (mark.c)
 
-    /* These variables are set when VIsual_active becomes FALSE */
+    // These variables are set when VIsual_active becomes FALSE
     visualinfo_T b_visual;
 #ifdef FEAT_EVAL
-    int		b_visual_mode_eval;  /* b_visual.vi_mode for visualmode() */
+    int		b_visual_mode_eval;  // b_visual.vi_mode for visualmode()
 #endif
 
-    pos_T	b_last_cursor;	/* cursor position when last unloading this
-				   buffer */
-    pos_T	b_last_insert;	/* where Insert mode was left */
-    pos_T	b_last_change;	/* position of last change: '. mark */
+    pos_T	b_last_cursor;	// cursor position when last unloading this
+				// buffer
+    pos_T	b_last_insert;	// where Insert mode was left
+    pos_T	b_last_change;	// position of last change: '. mark
 
 #ifdef FEAT_JUMPLIST
     /*
      * the changelist contains old change positions
      */
     pos_T	b_changelist[JUMPLISTSIZE];
-    int		b_changelistlen;	/* number of active entries */
-    int		b_new_change;		/* set by u_savecommon() */
+    int		b_changelistlen;	// number of active entries
+    int		b_new_change;		// set by u_savecommon()
 #endif
 
     /*
@@ -2210,65 +2217,63 @@
     char_u	b_chartab[32];
 
 #ifdef FEAT_LOCALMAP
-    /* Table used for mappings local to a buffer. */
+    // Table used for mappings local to a buffer.
     mapblock_T	*(b_maphash[256]);
 
-    /* First abbreviation local to a buffer. */
+    // First abbreviation local to a buffer.
     mapblock_T	*b_first_abbr;
 #endif
     // User commands local to the buffer.
     garray_T	b_ucmds;
-    /*
-     * start and end of an operator, also used for '[ and ']
-     */
+    // start and end of an operator, also used for '[ and ']
     pos_T	b_op_start;
     pos_T	b_op_start_orig;  /* used for Insstart_orig */
     pos_T	b_op_end;
 
 #ifdef FEAT_VIMINFO
-    int		b_marks_read;	/* Have we read viminfo marks yet? */
+    int		b_marks_read;	// Have we read viminfo marks yet?
 #endif
 
     /*
      * The following only used in undo.c.
      */
-    u_header_T	*b_u_oldhead;	/* pointer to oldest header */
-    u_header_T	*b_u_newhead;	/* pointer to newest header; may not be valid
-				   if b_u_curhead is not NULL */
-    u_header_T	*b_u_curhead;	/* pointer to current header */
-    int		b_u_numhead;	/* current number of headers */
-    int		b_u_synced;	/* entry lists are synced */
-    long	b_u_seq_last;	/* last used undo sequence number */
-    long	b_u_save_nr_last; /* counter for last file write */
-    long	b_u_seq_cur;	/* hu_seq of header below which we are now */
-    time_T	b_u_time_cur;	/* uh_time of header below which we are now */
-    long	b_u_save_nr_cur; /* file write nr after which we are now */
+    u_header_T	*b_u_oldhead;	// pointer to oldest header
+    u_header_T	*b_u_newhead;	// pointer to newest header; may not be valid
+				// if b_u_curhead is not NULL
+    u_header_T	*b_u_curhead;	// pointer to current header
+    int		b_u_numhead;	// current number of headers
+    int		b_u_synced;	// entry lists are synced
+    long	b_u_seq_last;	// last used undo sequence number
+    long	b_u_save_nr_last; // counter for last file write
+    long	b_u_seq_cur;	// hu_seq of header below which we are now
+    time_T	b_u_time_cur;	// uh_time of header below which we are now
+    long	b_u_save_nr_cur; // file write nr after which we are now
 
     /*
      * variables for "U" command in undo.c
      */
-    undoline_T	b_u_line_ptr;	/* saved line for "U" command */
-    linenr_T	b_u_line_lnum;	/* line number of line in u_line */
-    colnr_T	b_u_line_colnr;	/* optional column number */
+    undoline_T	b_u_line_ptr;	// saved line for "U" command
+    linenr_T	b_u_line_lnum;	// line number of line in u_line
+    colnr_T	b_u_line_colnr;	// optional column number
 
 #ifdef FEAT_INS_EXPAND
-    int		b_scanned;	/* ^N/^P have scanned this buffer */
+    int		b_scanned;	// ^N/^P have scanned this buffer
 #endif
 
-    /* flags for use of ":lmap" and IM control */
-    long	b_p_iminsert;	/* input mode for insert */
-    long	b_p_imsearch;	/* input mode for search */
-#define B_IMODE_USE_INSERT -1	/*	Use b_p_iminsert value for search */
-#define B_IMODE_NONE 0		/*	Input via none */
-#define B_IMODE_LMAP 1		/*	Input via langmap */
-#define B_IMODE_IM 2		/*	Input via input method */
+    // flags for use of ":lmap" and IM control
+    long	b_p_iminsert;	// input mode for insert
+    long	b_p_imsearch;	// input mode for search
+#define B_IMODE_USE_INSERT -1	//	Use b_p_iminsert value for search
+#define B_IMODE_NONE 0		//	Input via none
+#define B_IMODE_LMAP 1		//	Input via langmap
+#define B_IMODE_IM 2		//	Input via input method
 #define B_IMODE_LAST 2
 
 #ifdef FEAT_KEYMAP
-    short	b_kmap_state;	/* using "lmap" mappings */
-# define KEYMAP_INIT	1	/* 'keymap' was set, call keymap_init() */
-# define KEYMAP_LOADED	2	/* 'keymap' mappings have been loaded */
-    garray_T	b_kmap_ga;	/* the keymap table */
+    short	b_kmap_state;	// using "lmap" mappings
+# define KEYMAP_INIT	1	// 'keymap' was set, call keymap_init()
+# define KEYMAP_LOADED	2	// 'keymap' mappings have been loaded
+    garray_T	b_kmap_ga;	// the keymap table
 #endif
 
     /*
@@ -2276,164 +2281,168 @@
      * They are here because their value depends on the type of file
      * or contents of the file being edited.
      */
-    int		b_p_initialized;	/* set when options initialized */
+    int		b_p_initialized;	// set when options initialized
 
 #ifdef FEAT_EVAL
-    sctx_T	b_p_script_ctx[BV_COUNT];	/* SCTXs for buffer-local options */
+    sctx_T	b_p_script_ctx[BV_COUNT]; // SCTXs for buffer-local options
 #endif
 
-    int		b_p_ai;		/* 'autoindent' */
-    int		b_p_ai_nopaste;	/* b_p_ai saved for paste mode */
-    char_u	*b_p_bkc;	/* 'backupcopy' */
-    unsigned	b_bkc_flags;    /* flags for 'backupcopy' */
-    int		b_p_ci;		/* 'copyindent' */
-    int		b_p_bin;	/* 'binary' */
-    int		b_p_bomb;	/* 'bomb' */
-    char_u	*b_p_bh;	/* 'bufhidden' */
-    char_u	*b_p_bt;	/* 'buftype' */
+    int		b_p_ai;		// 'autoindent'
+    int		b_p_ai_nopaste;	// b_p_ai saved for paste mode
+    char_u	*b_p_bkc;	// 'backupcopy'
+    unsigned	b_bkc_flags;    // flags for 'backupcopy'
+    int		b_p_ci;		// 'copyindent'
+    int		b_p_bin;	// 'binary'
+    int		b_p_bomb;	// 'bomb'
+    char_u	*b_p_bh;	// 'bufhidden'
+    char_u	*b_p_bt;	// 'buftype'
 #ifdef FEAT_QUICKFIX
 #define BUF_HAS_QF_ENTRY 1
 #define BUF_HAS_LL_ENTRY 2
     int		b_has_qf_entry;
 #endif
-    int		b_p_bl;		/* 'buflisted' */
+    int		b_p_bl;		// 'buflisted'
 #ifdef FEAT_CINDENT
-    int		b_p_cin;	/* 'cindent' */
-    char_u	*b_p_cino;	/* 'cinoptions' */
-    char_u	*b_p_cink;	/* 'cinkeys' */
+    int		b_p_cin;	// 'cindent'
+    char_u	*b_p_cino;	// 'cinoptions'
+    char_u	*b_p_cink;	// 'cinkeys'
 #endif
 #if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT)
-    char_u	*b_p_cinw;	/* 'cinwords' */
+    char_u	*b_p_cinw;	// 'cinwords'
 #endif
 #ifdef FEAT_COMMENTS
-    char_u	*b_p_com;	/* 'comments' */
+    char_u	*b_p_com;	// 'comments'
 #endif
 #ifdef FEAT_FOLDING
-    char_u	*b_p_cms;	/* 'commentstring' */
+    char_u	*b_p_cms;	// 'commentstring'
 #endif
 #ifdef FEAT_INS_EXPAND
-    char_u	*b_p_cpt;	/* 'complete' */
+    char_u	*b_p_cpt;	// 'complete'
 #endif
 #ifdef FEAT_COMPL_FUNC
-    char_u	*b_p_cfu;	/* 'completefunc' */
-    char_u	*b_p_ofu;	/* 'omnifunc' */
+    char_u	*b_p_cfu;	// 'completefunc'
+    char_u	*b_p_ofu;	// 'omnifunc'
 #endif
 #ifdef FEAT_EVAL
-    char_u	*b_p_tfu;	/* 'tagfunc' */
+    char_u	*b_p_tfu;	// 'tagfunc'
 #endif
-    int		b_p_eol;	/* 'endofline' */
-    int		b_p_fixeol;	/* 'fixendofline' */
-    int		b_p_et;		/* 'expandtab' */
-    int		b_p_et_nobin;	/* b_p_et saved for binary mode */
-    int		b_p_et_nopaste; /* b_p_et saved for paste mode */
-    char_u	*b_p_fenc;	/* 'fileencoding' */
-    char_u	*b_p_ff;	/* 'fileformat' */
-    char_u	*b_p_ft;	/* 'filetype' */
-    char_u	*b_p_fo;	/* 'formatoptions' */
-    char_u	*b_p_flp;	/* 'formatlistpat' */
-    int		b_p_inf;	/* 'infercase' */
-    char_u	*b_p_isk;	/* 'iskeyword' */
+    int		b_p_eol;	// 'endofline'
+    int		b_p_fixeol;	// 'fixendofline'
+    int		b_p_et;		// 'expandtab'
+    int		b_p_et_nobin;	// b_p_et saved for binary mode
+    int		b_p_et_nopaste; // b_p_et saved for paste mode
+    char_u	*b_p_fenc;	// 'fileencoding'
+    char_u	*b_p_ff;	// 'fileformat'
+    char_u	*b_p_ft;	// 'filetype'
+    char_u	*b_p_fo;	// 'formatoptions'
+    char_u	*b_p_flp;	// 'formatlistpat'
+    int		b_p_inf;	// 'infercase'
+    char_u	*b_p_isk;	// 'iskeyword'
 #ifdef FEAT_FIND_ID
-    char_u	*b_p_def;	/* 'define' local value */
-    char_u	*b_p_inc;	/* 'include' */
+    char_u	*b_p_def;	// 'define' local value
+    char_u	*b_p_inc;	// 'include'
 # ifdef FEAT_EVAL
-    char_u	*b_p_inex;	/* 'includeexpr' */
-    long_u	b_p_inex_flags;	/* flags for 'includeexpr' */
+    char_u	*b_p_inex;	// 'includeexpr'
+    long_u	b_p_inex_flags;	// flags for 'includeexpr'
 # endif
 #endif
 #if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
-    char_u	*b_p_inde;	/* 'indentexpr' */
-    long_u	b_p_inde_flags;	/* flags for 'indentexpr' */
-    char_u	*b_p_indk;	/* 'indentkeys' */
+    char_u	*b_p_inde;	// 'indentexpr'
+    long_u	b_p_inde_flags;	// flags for 'indentexpr'
+    char_u	*b_p_indk;	// 'indentkeys'
 #endif
-    char_u	*b_p_fp;	/* 'formatprg' */
+    char_u	*b_p_fp;	// 'formatprg'
 #if defined(FEAT_EVAL)
-    char_u	*b_p_fex;	/* 'formatexpr' */
-    long_u	b_p_fex_flags;	/* flags for 'formatexpr' */
+    char_u	*b_p_fex;	// 'formatexpr'
+    long_u	b_p_fex_flags;	// flags for 'formatexpr'
 #endif
 #ifdef FEAT_CRYPT
-    char_u	*b_p_key;	/* 'key' */
+    char_u	*b_p_key;	// 'key'
 #endif
-    char_u	*b_p_kp;	/* 'keywordprg' */
+    char_u	*b_p_kp;	// 'keywordprg'
 #ifdef FEAT_LISP
-    int		b_p_lisp;	/* 'lisp' */
+    int		b_p_lisp;	// 'lisp'
 #endif
-    char_u	*b_p_menc;	/* 'makeencoding' */
-    char_u	*b_p_mps;	/* 'matchpairs' */
-    int		b_p_ml;		/* 'modeline' */
-    int		b_p_ml_nobin;	/* b_p_ml saved for binary mode */
-    int		b_p_ma;		/* 'modifiable' */
-    char_u	*b_p_nf;	/* 'nrformats' */
-    int		b_p_pi;		/* 'preserveindent' */
+    char_u	*b_p_menc;	// 'makeencoding'
+    char_u	*b_p_mps;	// 'matchpairs'
+    int		b_p_ml;		// 'modeline'
+    int		b_p_ml_nobin;	// b_p_ml saved for binary mode
+    int		b_p_ma;		// 'modifiable'
+    char_u	*b_p_nf;	// 'nrformats'
+    int		b_p_pi;		// 'preserveindent'
 #ifdef FEAT_TEXTOBJ
-    char_u	*b_p_qe;	/* 'quoteescape' */
+    char_u	*b_p_qe;	// 'quoteescape'
 #endif
-    int		b_p_ro;		/* 'readonly' */
-    long	b_p_sw;		/* 'shiftwidth' */
-    int		b_p_sn;		/* 'shortname' */
+    int		b_p_ro;		// 'readonly'
+    long	b_p_sw;		// 'shiftwidth'
+    int		b_p_sn;		// 'shortname'
 #ifdef FEAT_SMARTINDENT
-    int		b_p_si;		/* 'smartindent' */
+    int		b_p_si;		// 'smartindent'
 #endif
-    long	b_p_sts;	/* 'softtabstop' */
-    long	b_p_sts_nopaste; /* b_p_sts saved for paste mode */
+    long	b_p_sts;	// 'softtabstop'
+    long	b_p_sts_nopaste; // b_p_sts saved for paste mode
 #ifdef FEAT_SEARCHPATH
-    char_u	*b_p_sua;	/* 'suffixesadd' */
+    char_u	*b_p_sua;	// 'suffixesadd'
 #endif
-    int		b_p_swf;	/* 'swapfile' */
+    int		b_p_swf;	// 'swapfile'
 #ifdef FEAT_SYN_HL
-    long	b_p_smc;	/* 'synmaxcol' */
-    char_u	*b_p_syn;	/* 'syntax' */
+    long	b_p_smc;	// 'synmaxcol'
+    char_u	*b_p_syn;	// 'syntax'
 #endif
-    long	b_p_ts;		/* 'tabstop' */
-    int		b_p_tx;		/* 'textmode' */
-    long	b_p_tw;		/* 'textwidth' */
-    long	b_p_tw_nobin;	/* b_p_tw saved for binary mode */
-    long	b_p_tw_nopaste;	/* b_p_tw saved for paste mode */
-    long	b_p_wm;		/* 'wrapmargin' */
-    long	b_p_wm_nobin;	/* b_p_wm saved for binary mode */
-    long	b_p_wm_nopaste;	/* b_p_wm saved for paste mode */
+    long	b_p_ts;		// 'tabstop'
+    int		b_p_tx;		// 'textmode'
+    long	b_p_tw;		// 'textwidth'
+    long	b_p_tw_nobin;	// b_p_tw saved for binary mode
+    long	b_p_tw_nopaste;	// b_p_tw saved for paste mode
+    long	b_p_wm;		// 'wrapmargin'
+    long	b_p_wm_nobin;	// b_p_wm saved for binary mode
+    long	b_p_wm_nopaste;	// b_p_wm saved for paste mode
 #ifdef FEAT_VARTABS
-    char_u	*b_p_vsts;	/* 'varsofttabstop' */
-    int		*b_p_vsts_array;   /* 'varsofttabstop' in internal format */
-    char_u	*b_p_vsts_nopaste; /* b_p_vsts saved for paste mode */
-    char_u	*b_p_vts;	/* 'vartabstop' */
-    int		*b_p_vts_array;	/* 'vartabstop' in internal format */
+    char_u	*b_p_vsts;	// 'varsofttabstop'
+    int		*b_p_vsts_array;   // 'varsofttabstop' in internal format
+    char_u	*b_p_vsts_nopaste; // b_p_vsts saved for paste mode
+    char_u	*b_p_vts;	// 'vartabstop'
+    int		*b_p_vts_array;	// 'vartabstop' in internal format
 #endif
 #ifdef FEAT_KEYMAP
-    char_u	*b_p_keymap;	/* 'keymap' */
+    char_u	*b_p_keymap;	// 'keymap'
 #endif
 
-    /* local values for options which are normally global */
+    /*
+     * local values for options which are normally global
+     */
 #ifdef FEAT_QUICKFIX
-    char_u	*b_p_gp;	/* 'grepprg' local value */
-    char_u	*b_p_mp;	/* 'makeprg' local value */
-    char_u	*b_p_efm;	/* 'errorformat' local value */
+    char_u	*b_p_gp;	// 'grepprg' local value
+    char_u	*b_p_mp;	// 'makeprg' local value
+    char_u	*b_p_efm;	// 'errorformat' local value
 #endif
-    char_u	*b_p_ep;	/* 'equalprg' local value */
-    char_u	*b_p_path;	/* 'path' local value */
-    int		b_p_ar;		/* 'autoread' local value */
-    char_u	*b_p_tags;	/* 'tags' local value */
-    char_u	*b_p_tc;	/* 'tagcase' local value */
-    unsigned	b_tc_flags;     /* flags for 'tagcase' */
+    char_u	*b_p_ep;	// 'equalprg' local value
+    char_u	*b_p_path;	// 'path' local value
+    int		b_p_ar;		// 'autoread' local value
+    char_u	*b_p_tags;	// 'tags' local value
+    char_u	*b_p_tc;	// 'tagcase' local value
+    unsigned	b_tc_flags;     // flags for 'tagcase'
 #ifdef FEAT_INS_EXPAND
-    char_u	*b_p_dict;	/* 'dictionary' local value */
-    char_u	*b_p_tsr;	/* 'thesaurus' local value */
+    char_u	*b_p_dict;	// 'dictionary' local value
+    char_u	*b_p_tsr;	// 'thesaurus' local value
 #endif
-    long	b_p_ul;		/* 'undolevels' local value */
+    long	b_p_ul;		// 'undolevels' local value
 #ifdef FEAT_PERSISTENT_UNDO
-    int		b_p_udf;	/* 'undofile' */
+    int		b_p_udf;	// 'undofile'
 #endif
 #ifdef FEAT_LISP
-    char_u	*b_p_lw;	/* 'lispwords' local value */
+    char_u	*b_p_lw;	// 'lispwords' local value
 #endif
 #ifdef FEAT_TERMINAL
-    long	b_p_twsl;	/* 'termwinscroll' */
+    long	b_p_twsl;	// 'termwinscroll'
 #endif
 
-    /* end of buffer options */
+    /*
+     * end of buffer options
+     */
 
 #ifdef FEAT_CINDENT
-    /* values set from b_p_cino */
+    // values set from b_p_cino
     int		b_ind_level;
     int		b_ind_open_imag;
     int		b_ind_no_brace;
@@ -2472,18 +2481,18 @@
     int		b_ind_cpp_extern_c;
 #endif
 
-    linenr_T	b_no_eol_lnum;	/* non-zero lnum when last line of next binary
-				 * write should not have an end-of-line */
+    linenr_T	b_no_eol_lnum;	// non-zero lnum when last line of next binary
+				// write should not have an end-of-line
 
-    int		b_start_eol;	/* last line had eol when it was read */
-    int		b_start_ffc;	/* first char of 'ff' when edit started */
-    char_u	*b_start_fenc;	/* 'fileencoding' when edit started or NULL */
-    int		b_bad_char;	/* "++bad=" argument when edit started or 0 */
-    int		b_start_bomb;	/* 'bomb' when it was read */
+    int		b_start_eol;	// last line had eol when it was read
+    int		b_start_ffc;	// first char of 'ff' when edit started
+    char_u	*b_start_fenc;	// 'fileencoding' when edit started or NULL
+    int		b_bad_char;	// "++bad=" argument when edit started or 0
+    int		b_start_bomb;	// 'bomb' when it was read
 
 #ifdef FEAT_EVAL
-    dictitem_T	b_bufvar;	/* variable for "b:" Dictionary */
-    dict_T	*b_vars;	/* internal variables, local to buffer */
+    dictitem_T	b_bufvar;	// variable for "b:" Dictionary
+    dict_T	*b_vars;	// internal variables, local to buffer
 
     listener_T	*b_listener;
     list_T	*b_recorded_changes;
@@ -2494,35 +2503,33 @@
 #endif
 
 #if defined(FEAT_BEVAL) && defined(FEAT_EVAL)
-    char_u	*b_p_bexpr;	/* 'balloonexpr' local value */
-    long_u	b_p_bexpr_flags;/* flags for 'balloonexpr' */
+    char_u	*b_p_bexpr;	// 'balloonexpr' local value
+    long_u	b_p_bexpr_flags;// flags for 'balloonexpr'
 #endif
 #ifdef FEAT_CRYPT
-    char_u	*b_p_cm;	/* 'cryptmethod' */
+    char_u	*b_p_cm;	// 'cryptmethod'
 #endif
 
-    /* When a buffer is created, it starts without a swap file.  b_may_swap is
-     * then set to indicate that a swap file may be opened later.  It is reset
-     * if a swap file could not be opened.
-     */
+    // When a buffer is created, it starts without a swap file.  b_may_swap is
+    // then set to indicate that a swap file may be opened later.  It is reset
+    // if a swap file could not be opened.
     int		b_may_swap;
-    int		b_did_warn;	/* Set to 1 if user has been warned on first
-				   change of a read-only file */
+    int		b_did_warn;	// Set to 1 if user has been warned on first
+				// change of a read-only file
 
-    /* Two special kinds of buffers:
-     * help buffer  - used for help files, won't use a swap file.
-     * spell buffer - used for spell info, never displayed and doesn't have a
-     *		      file name.
-     */
-    int		b_help;		/* TRUE for help file buffer (when set b_p_bt
-				   is "help") */
+    // Two special kinds of buffers:
+    // help buffer  - used for help files, won't use a swap file.
+    // spell buffer - used for spell info, never displayed and doesn't have a
+    //		      file name.
+    int		b_help;		// TRUE for help file buffer (when set b_p_bt
+				// is "help")
 #ifdef FEAT_SPELL
-    int		b_spell;	/* TRUE for a spell file buffer, most fields
-				   are not used!  Use the B_SPELL macro to
-				   access b_spell without #ifdef. */
+    int		b_spell;	// TRUE for a spell file buffer, most fields
+				// are not used!  Use the B_SPELL macro to
+				// access b_spell without #ifdef.
 #endif
 
-    int		b_shortname;	/* this file has an 8.3 file name */
+    int		b_shortname;	// this file has an 8.3 file name
 
 #ifdef FEAT_JOB_CHANNEL
     char_u	*b_prompt_text;		// set by prompt_setprompt()
@@ -2532,7 +2539,7 @@
 					// a prompt buffer window.
 #endif
 #ifdef FEAT_MZSCHEME
-    void	*b_mzscheme_ref; /* The MzScheme reference to this buffer */
+    void	*b_mzscheme_ref; // The MzScheme reference to this buffer
 #endif
 
 #ifdef FEAT_PERL
@@ -2540,11 +2547,11 @@
 #endif
 
 #ifdef FEAT_PYTHON
-    void	*b_python_ref;	/* The Python reference to this buffer */
+    void	*b_python_ref;	// The Python reference to this buffer
 #endif
 
 #ifdef FEAT_PYTHON3
-    void	*b_python3_ref;	/* The Python3 reference to this buffer */
+    void	*b_python3_ref;	// The Python3 reference to this buffer
 #endif
 
 #ifdef FEAT_TCL
@@ -2556,50 +2563,50 @@
 #endif
 
 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
-    synblock_T	b_s;		/* Info related to syntax highlighting.  w_s
-				 * normally points to this, but some windows
-				 * may use a different synblock_T. */
+    synblock_T	b_s;		// Info related to syntax highlighting.  w_s
+				// normally points to this, but some windows
+				// may use a different synblock_T.
 #endif
 
 #ifdef FEAT_SIGNS
-    signlist_T	*b_signlist;	/* list of signs to draw */
+    signlist_T	*b_signlist;	   // list of signs to draw
 # ifdef FEAT_NETBEANS_INTG
-    int		b_has_sign_column; /* Flag that is set when a first sign is
-				    * added and remains set until the end of
-				    * the netbeans session. */
+    int		b_has_sign_column; // Flag that is set when a first sign is
+				   // added and remains set until the end of
+				   // the netbeans session.
 # endif
 #endif
 
 #ifdef FEAT_NETBEANS_INTG
-    int		b_netbeans_file;    /* TRUE when buffer is owned by NetBeans */
-    int		b_was_netbeans_file;/* TRUE if b_netbeans_file was once set */
+    int		b_netbeans_file;    // TRUE when buffer is owned by NetBeans
+    int		b_was_netbeans_file;// TRUE if b_netbeans_file was once set
 #endif
 #ifdef FEAT_JOB_CHANNEL
-    int		b_write_to_channel; /* TRUE when appended lines are written to
-				     * a channel. */
+    int		b_write_to_channel; // TRUE when appended lines are written to
+				    // a channel.
 #endif
 
 #ifdef FEAT_CRYPT
-    cryptstate_T *b_cryptstate;	/* Encryption state while reading or writing
-				 * the file. NULL when not using encryption. */
+    cryptstate_T *b_cryptstate;	// Encryption state while reading or writing
+				// the file. NULL when not using encryption.
 #endif
-    int		b_mapped_ctrl_c; /* modes where CTRL-C is mapped */
+    int		b_mapped_ctrl_c; // modes where CTRL-C is mapped
 
 #ifdef FEAT_TERMINAL
-    term_T	*b_term;	/* When not NULL this buffer is for a terminal
-				 * window. */
+    term_T	*b_term;	// When not NULL this buffer is for a terminal
+				// window.
 #endif
 #ifdef FEAT_DIFF
     int		b_diff_failed;	// internal diff failed for this buffer
 #endif
-}; /* file_buffer */
+}; // file_buffer
 
 
 #ifdef FEAT_DIFF
 /*
  * Stuff for diff mode.
  */
-# define DB_COUNT 8	/* up to eight buffers can be diff'ed */
+# define DB_COUNT 8	// up to eight buffers can be diff'ed
 
 /*
  * Each diffblock defines where a block of lines starts in each of the buffers
@@ -2619,8 +2626,8 @@
 struct diffblock_S
 {
     diff_T	*df_next;
-    linenr_T	df_lnum[DB_COUNT];	/* line number in buffer */
-    linenr_T	df_count[DB_COUNT];	/* nr of inserted/changed lines */
+    linenr_T	df_lnum[DB_COUNT];	// line number in buffer
+    linenr_T	df_count[DB_COUNT];	// nr of inserted/changed lines
 };
 #endif
 
@@ -2692,12 +2699,12 @@
  */
 typedef struct w_line
 {
-    linenr_T	wl_lnum;	/* buffer line number for logical line */
-    short_u	wl_size;	/* height in screen lines */
-    char	wl_valid;	/* TRUE values are valid for text in buffer */
+    linenr_T	wl_lnum;	// buffer line number for logical line
+    short_u	wl_size;	// height in screen lines
+    char	wl_valid;	// TRUE values are valid for text in buffer
 #ifdef FEAT_FOLDING
-    char	wl_folded;	/* TRUE when this is a range of folded lines */
-    linenr_T	wl_lastlnum;	/* last buffer line number for logical line */
+    char	wl_folded;	// TRUE when this is a range of folded lines
+    linenr_T	wl_lastlnum;	// last buffer line number for logical line
 #endif
 } wline_T;
 
@@ -2722,9 +2729,9 @@
     win_T	*fr_win;	// window that fills this frame
 };
 
-#define FR_LEAF	0	/* frame is a leaf */
-#define FR_ROW	1	/* frame with a row of windows */
-#define FR_COL	2	/* frame with a column of windows */
+#define FR_LEAF	0	// frame is a leaf
+#define FR_ROW	1	// frame with a row of windows
+#define FR_COL	2	// frame with a column of windows
 
 /*
  * Struct used for highlighting 'hlsearch' matches, matches defined by
@@ -2734,23 +2741,23 @@
  */
 typedef struct
 {
-    regmmatch_T	rm;	/* points to the regexp program; contains last found
-			   match (may continue in next line) */
-    buf_T	*buf;	/* the buffer to search for a match */
-    linenr_T	lnum;	/* the line to search for a match */
-    int		attr;	/* attributes to be used for a match */
-    int		attr_cur; /* attributes currently active in win_line() */
-    linenr_T	first_lnum;	/* first lnum to search for multi-line pat */
-    colnr_T	startcol; /* in win_line() points to char where HL starts */
-    colnr_T	endcol;	 /* in win_line() points to char where HL ends */
-    int		is_addpos;	/* position specified directly by
-				   matchaddpos(). TRUE/FALSE */
+    regmmatch_T	rm;	    // points to the regexp program; contains last
+			    // found match (may continue in next line)
+    buf_T	*buf;	    // the buffer to search for a match
+    linenr_T	lnum;	    // the line to search for a match
+    int		attr;	    // attributes to be used for a match
+    int		attr_cur;   // attributes currently active in win_line()
+    linenr_T	first_lnum; // first lnum to search for multi-line pat
+    colnr_T	startcol;   // in win_line() points to char where HL starts
+    colnr_T	endcol;	    // in win_line() points to char where HL ends
+    int		is_addpos;  // position specified directly by
+			    // matchaddpos(). TRUE/FALSE
 #ifdef FEAT_RELTIME
-    proftime_T	tm;	/* for a time limit */
+    proftime_T	tm;	    // for a time limit
 #endif
 } match_T;
 
-/* number of positions supported by matchaddpos() */
+// number of positions supported by matchaddpos()
 #define MAXPOSMATCH 8
 
 /*
@@ -2758,9 +2765,9 @@
  */
 typedef struct
 {
-    linenr_T	lnum;	/* line number */
-    colnr_T	col;	/* column number */
-    int		len;	/* length: 0 - to the end of line */
+    linenr_T	lnum;	// line number
+    colnr_T	col;	// column number
+    int		len;	// length: 0 - to the end of line
 } llpos_T;
 
 /*
@@ -2770,10 +2777,10 @@
 typedef struct posmatch posmatch_T;
 struct posmatch
 {
-    llpos_T	pos[MAXPOSMATCH];	/* array of positions */
-    int		cur;			/* internal position counter */
-    linenr_T	toplnum;		/* top buffer line */
-    linenr_T	botlnum;		/* bottom buffer line */
+    llpos_T	pos[MAXPOSMATCH];	// array of positions
+    int		cur;			// internal position counter
+    linenr_T	toplnum;		// top buffer line
+    linenr_T	botlnum;		// bottom buffer line
 };
 
 /*
@@ -2784,15 +2791,15 @@
 struct matchitem
 {
     matchitem_T	*next;
-    int		id;	    /* match ID */
-    int		priority;   /* match priority */
-    char_u	*pattern;   /* pattern to highlight */
-    int		hlg_id;	    /* highlight group ID */
-    regmmatch_T	match;	    /* regexp program for pattern */
-    posmatch_T	pos;	    /* position matches */
-    match_T	hl;	    /* struct for doing the actual highlighting */
+    int		id;	    // match ID
+    int		priority;   // match priority
+    char_u	*pattern;   // pattern to highlight
+    int		hlg_id;	    // highlight group ID
+    regmmatch_T	match;	    // regexp program for pattern
+    posmatch_T	pos;	    // position matches
+    match_T	hl;	    // struct for doing the actual highlighting
 #ifdef FEAT_CONCEAL
-    int		conceal_char; /* cchar for Conceal highlighting */
+    int		conceal_char; // cchar for Conceal highlighting
 #endif
 };
 
@@ -2821,80 +2828,80 @@
  */
 struct window_S
 {
-    int		w_id;		    /* unique window ID */
+    int		w_id;		    // unique window ID
 
-    buf_T	*w_buffer;	    /* buffer we are a window into */
+    buf_T	*w_buffer;	    // buffer we are a window into
 
-    win_T	*w_prev;	    /* link to previous window */
-    win_T	*w_next;	    /* link to next window */
+    win_T	*w_prev;	    // link to previous window
+    win_T	*w_next;	    // link to next window
 
 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
-    synblock_T	*w_s;		    /* for :ownsyntax */
+    synblock_T	*w_s;		    // for :ownsyntax
 #endif
 
-    int		w_closing;	    /* window is being closed, don't let
-				       autocommands close it too. */
+    int		w_closing;	    // window is being closed, don't let
+				    // autocommands close it too.
 
-    frame_T	*w_frame;	    /* frame containing this window */
+    frame_T	*w_frame;	    // frame containing this window
 
-    pos_T	w_cursor;	    /* cursor position in buffer */
+    pos_T	w_cursor;	    // cursor position in buffer
 
-    colnr_T	w_curswant;	    /* The column we'd like to be at.  This is
-				       used to try to stay in the same column
-				       for up/down cursor motions. */
+    colnr_T	w_curswant;	    // The column we'd like to be at.  This is
+				    // used to try to stay in the same column
+				    // for up/down cursor motions.
 
-    int		w_set_curswant;	    /* If set, then update w_curswant the next
-				       time through cursupdate() to the
-				       current virtual column */
+    int		w_set_curswant;	    // If set, then update w_curswant the next
+				    // time through cursupdate() to the
+				    // current virtual column
 
 #ifdef FEAT_SYN_HL
     linenr_T	w_last_cursorline;  // where last time 'cursorline' was drawn
 #endif
 
     /*
-     * the next seven are used to update the visual part
+     * the next seven are used to update the Visual highlighting
      */
-    char	w_old_visual_mode;  /* last known VIsual_mode */
-    linenr_T	w_old_cursor_lnum;  /* last known end of visual part */
-    colnr_T	w_old_cursor_fcol;  /* first column for block visual part */
-    colnr_T	w_old_cursor_lcol;  /* last column for block visual part */
-    linenr_T	w_old_visual_lnum;  /* last known start of visual part */
-    colnr_T	w_old_visual_col;   /* last known start of visual part */
-    colnr_T	w_old_curswant;	    /* last known value of Curswant */
+    char	w_old_visual_mode;  // last known VIsual_mode
+    linenr_T	w_old_cursor_lnum;  // last known end of visual part
+    colnr_T	w_old_cursor_fcol;  // first column for block visual part
+    colnr_T	w_old_cursor_lcol;  // last column for block visual part
+    linenr_T	w_old_visual_lnum;  // last known start of visual part
+    colnr_T	w_old_visual_col;   // last known start of visual part
+    colnr_T	w_old_curswant;	    // last known value of Curswant
 
     /*
      * "w_topline", "w_leftcol" and "w_skipcol" specify the offsets for
      * displaying the buffer.
      */
-    linenr_T	w_topline;	    /* buffer line number of the line at the
-				       top of the window */
-    char	w_topline_was_set;  /* flag set to TRUE when topline is set,
-				       e.g. by winrestview() */
+    linenr_T	w_topline;	    // buffer line number of the line at the
+				    // top of the window
+    char	w_topline_was_set;  // flag set to TRUE when topline is set,
+				    // e.g. by winrestview()
 #ifdef FEAT_DIFF
-    int		w_topfill;	    /* number of filler lines above w_topline */
-    int		w_old_topfill;	    /* w_topfill at last redraw */
-    int		w_botfill;	    /* TRUE when filler lines are actually
-				       below w_topline (at end of file) */
-    int		w_old_botfill;	    /* w_botfill at last redraw */
+    int		w_topfill;	    // number of filler lines above w_topline
+    int		w_old_topfill;	    // w_topfill at last redraw
+    int		w_botfill;	    // TRUE when filler lines are actually
+				    // below w_topline (at end of file)
+    int		w_old_botfill;	    // w_botfill at last redraw
 #endif
-    colnr_T	w_leftcol;	    /* window column number of the left most
-				       character in the window; used when
-				       'wrap' is off */
-    colnr_T	w_skipcol;	    /* starting column when a single line
-				       doesn't fit in the window */
+    colnr_T	w_leftcol;	    // window column number of the left most
+				    // character in the window; used when
+				    // 'wrap' is off
+    colnr_T	w_skipcol;	    // starting column when a single line
+				    // doesn't fit in the window
 
     /*
      * Layout of the window in the screen.
      * May need to add "msg_scrolled" to "w_winrow" in rare situations.
      */
-    int		w_winrow;	    /* first row of window in screen */
-    int		w_height;	    /* number of rows in window, excluding
-				       status/command/winbar line(s) */
-    int		w_status_height;    /* number of status lines (0 or 1) */
-    int		w_wincol;	    /* Leftmost column of window in screen. */
-    int		w_width;	    /* Width of window, excluding separation. */
-    int		w_vsep_width;	    /* Number of separator columns (0 or 1). */
-    pos_save_T	w_save_cursor;	    /* backup of cursor pos and topline */
+    int		w_winrow;	    // first row of window in screen
+    int		w_height;	    // number of rows in window, excluding
+				    // status/command/winbar line(s)
+    int		w_status_height;    // number of status lines (0 or 1)
+    int		w_wincol;	    // Leftmost column of window in screen.
+    int		w_width;	    // Width of window, excluding separation.
+    int		w_vsep_width;	    // Number of separator columns (0 or 1).
+    pos_save_T	w_save_cursor;	    // backup of cursor pos and topline
 #ifdef FEAT_TEXT_PROP
     int		w_popup_flags;	    // POPF_ values
     char_u	*w_popup_title;
@@ -2948,41 +2955,41 @@
      * valid or need to be recomputed.	See screen.c for values.
      */
     int		w_valid;
-    pos_T	w_valid_cursor;	    /* last known position of w_cursor, used
-				       to adjust w_valid */
-    colnr_T	w_valid_leftcol;    /* last known w_leftcol */
+    pos_T	w_valid_cursor;	    // last known position of w_cursor, used
+				    // to adjust w_valid
+    colnr_T	w_valid_leftcol;    // last known w_leftcol
 
     /*
      * w_cline_height is the number of physical lines taken by the buffer line
      * that the cursor is on.  We use this to avoid extra calls to plines().
      */
-    int		w_cline_height;	    /* current size of cursor line */
+    int		w_cline_height;	    // current size of cursor line
 #ifdef FEAT_FOLDING
-    int		w_cline_folded;	    /* cursor line is folded */
+    int		w_cline_folded;	    // cursor line is folded
 #endif
 
-    int		w_cline_row;	    /* starting row of the cursor line */
+    int		w_cline_row;	    // starting row of the cursor line
 
-    colnr_T	w_virtcol;	    /* column number of the cursor in the
-				       buffer line, as opposed to the column
-				       number we're at on the screen.  This
-				       makes a difference on lines which span
-				       more than one screen line or when
-				       w_leftcol is non-zero */
+    colnr_T	w_virtcol;	    // column number of the cursor in the
+				    // buffer line, as opposed to the column
+				    // number we're at on the screen.  This
+				    // makes a difference on lines which span
+				    // more than one screen line or when
+				    // w_leftcol is non-zero
 
     /*
      * w_wrow and w_wcol specify the cursor position in the window.
      * This is related to positions in the window, not in the display or
      * buffer, thus w_wrow is relative to w_winrow.
      */
-    int		w_wrow, w_wcol;	    /* cursor position in window */
+    int		w_wrow, w_wcol;	    // cursor position in window
 
-    linenr_T	w_botline;	    /* number of the line below the bottom of
-				       the window */
-    int		w_empty_rows;	    /* number of ~ rows in window */
+    linenr_T	w_botline;	    // number of the line below the bottom of
+				    // the window
+    int		w_empty_rows;	    // number of ~ rows in window
 #ifdef FEAT_DIFF
-    int		w_filler_rows;	    /* number of filler rows at the end of the
-				       window */
+    int		w_filler_rows;	    // number of filler rows at the end of the
+				    // window
 #endif
 
     /*
@@ -2995,57 +3002,57 @@
      * what is currently displayed.  wl_valid is reset to indicated this.
      * This is used for efficient redrawing.
      */
-    int		w_lines_valid;	    /* number of valid entries */
+    int		w_lines_valid;	    // number of valid entries
     wline_T	*w_lines;
 
 #ifdef FEAT_FOLDING
-    garray_T	w_folds;	    /* array of nested folds */
-    char	w_fold_manual;	    /* when TRUE: some folds are opened/closed
-				       manually */
-    char	w_foldinvalid;	    /* when TRUE: folding needs to be
-				       recomputed */
+    garray_T	w_folds;	    // array of nested folds
+    char	w_fold_manual;	    // when TRUE: some folds are opened/closed
+				    // manually
+    char	w_foldinvalid;	    // when TRUE: folding needs to be
+				    // recomputed
 #endif
 #ifdef FEAT_LINEBREAK
-    int		w_nrwidth;	    /* width of 'number' and 'relativenumber'
-				       column being used */
+    int		w_nrwidth;	    // width of 'number' and 'relativenumber'
+				    // column being used
 #endif
 
     /*
      * === end of cached values ===
      */
 
-    int		w_redr_type;	    /* type of redraw to be performed on win */
-    int		w_upd_rows;	    /* number of window lines to update when
-				       w_redr_type is REDRAW_TOP */
-    linenr_T	w_redraw_top;	    /* when != 0: first line needing redraw */
-    linenr_T	w_redraw_bot;	    /* when != 0: last line needing redraw */
-    int		w_redr_status;	    /* if TRUE status line must be redrawn */
+    int		w_redr_type;	    // type of redraw to be performed on win
+    int		w_upd_rows;	    // number of window lines to update when
+				    // w_redr_type is REDRAW_TOP
+    linenr_T	w_redraw_top;	    // when != 0: first line needing redraw
+    linenr_T	w_redraw_bot;	    // when != 0: last line needing redraw
+    int		w_redr_status;	    // if TRUE status line must be redrawn
 
 #ifdef FEAT_CMDL_INFO
-    /* remember what is shown in the ruler for this window (if 'ruler' set) */
-    pos_T	w_ru_cursor;	    /* cursor position shown in ruler */
-    colnr_T	w_ru_virtcol;	    /* virtcol shown in ruler */
-    linenr_T	w_ru_topline;	    /* topline shown in ruler */
-    linenr_T	w_ru_line_count;    /* line count used for ruler */
+    // remember what is shown in the ruler for this window (if 'ruler' set)
+    pos_T	w_ru_cursor;	    // cursor position shown in ruler
+    colnr_T	w_ru_virtcol;	    // virtcol shown in ruler
+    linenr_T	w_ru_topline;	    // topline shown in ruler
+    linenr_T	w_ru_line_count;    // line count used for ruler
 # ifdef FEAT_DIFF
-    int		w_ru_topfill;	    /* topfill shown in ruler */
+    int		w_ru_topfill;	    // topfill shown in ruler
 # endif
-    char	w_ru_empty;	    /* TRUE if ruler shows 0-1 (empty line) */
+    char	w_ru_empty;	    // TRUE if ruler shows 0-1 (empty line)
 #endif
 
-    int		w_alt_fnum;	    /* alternate file (for # and CTRL-^) */
+    int		w_alt_fnum;	    // alternate file (for # and CTRL-^)
 
-    alist_T	*w_alist;	    /* pointer to arglist for this window */
-    int		w_arg_idx;	    /* current index in argument list (can be
-				       out of range!) */
-    int		w_arg_idx_invalid;  /* editing another file than w_arg_idx */
+    alist_T	*w_alist;	    // pointer to arglist for this window
+    int		w_arg_idx;	    // current index in argument list (can be
+				    // out of range!)
+    int		w_arg_idx_invalid;  // editing another file than w_arg_idx
 
-    char_u	*w_localdir;	    /* absolute path of local directory or
-				       NULL */
+    char_u	*w_localdir;	    // absolute path of local directory or
+				    // NULL
 #ifdef FEAT_MENU
-    vimmenu_T	*w_winbar;	    /* The root of the WinBar menu hierarchy. */
-    winbar_item_T *w_winbar_items;  /* list of items in the WinBar */
-    int		w_winbar_height;    /* 1 if there is a window toolbar */
+    vimmenu_T	*w_winbar;	    // The root of the WinBar menu hierarchy.
+    winbar_item_T *w_winbar_items;  // list of items in the WinBar
+    int		w_winbar_height;    // 1 if there is a window toolbar
 #endif
 
     /*
@@ -3058,26 +3065,26 @@
     winopt_T	w_onebuf_opt;
     winopt_T	w_allbuf_opt;
 
-    /* A few options have local flags for P_INSECURE. */
+    // A few options have local flags for P_INSECURE.
 #ifdef FEAT_STL_OPT
-    long_u	w_p_stl_flags;	    /* flags for 'statusline' */
+    long_u	w_p_stl_flags;	    // flags for 'statusline'
 #endif
 #ifdef FEAT_EVAL
-    long_u	w_p_fde_flags;	    /* flags for 'foldexpr' */
-    long_u	w_p_fdt_flags;	    /* flags for 'foldtext' */
+    long_u	w_p_fde_flags;	    // flags for 'foldexpr'
+    long_u	w_p_fdt_flags;	    // flags for 'foldtext'
 #endif
 #ifdef FEAT_SYN_HL
-    int		*w_p_cc_cols;	    /* array of columns to highlight or NULL */
+    int		*w_p_cc_cols;	    // array of columns to highlight or NULL
 #endif
 #ifdef FEAT_LINEBREAK
-    int		w_p_brimin;	    /* minimum width for breakindent */
-    int		w_p_brishift;	    /* additional shift for breakindent */
-    int		w_p_brisbr;	    /* sbr in 'briopt' */
+    int		w_p_brimin;	    // minimum width for breakindent
+    int		w_p_brishift;	    // additional shift for breakindent
+    int		w_p_brisbr;	    // sbr in 'briopt'
 #endif
-    long	w_p_siso;	    /* 'sidescrolloff' local value */
-    long	w_p_so;		    /* 'scrolloff' local value */
+    long	w_p_siso;	    // 'sidescrolloff' local value
+    long	w_p_so;		    // 'scrolloff' local value
 
-    /* transform a pointer to a "onebuf" option into a "allbuf" option */
+    // transform a pointer to a "onebuf" option into a "allbuf" option
 #define GLOBAL_WO(p)	((char *)p + sizeof(winopt_T))
 
     long	w_scbind_pos;
@@ -3092,23 +3099,23 @@
      * a new line after setting the w_pcmark.  If not, then we revert to
      * using the previous w_pcmark.
      */
-    pos_T	w_pcmark;	/* previous context mark */
-    pos_T	w_prev_pcmark;	/* previous w_pcmark */
+    pos_T	w_pcmark;	// previous context mark
+    pos_T	w_prev_pcmark;	// previous w_pcmark
 
 #ifdef FEAT_JUMPLIST
     /*
      * the jumplist contains old cursor positions
      */
     xfmark_T	w_jumplist[JUMPLISTSIZE];
-    int		w_jumplistlen;		/* number of active entries */
-    int		w_jumplistidx;		/* current position */
+    int		w_jumplistlen;		// number of active entries
+    int		w_jumplistidx;		// current position
 
-    int		w_changelistidx;	/* current position in b_changelist */
+    int		w_changelistidx;	// current position in b_changelist
 #endif
 
 #ifdef FEAT_SEARCH_EXTRA
-    matchitem_T	*w_match_head;		/* head of match list */
-    int		w_next_match_id;	/* next match ID */
+    matchitem_T	*w_match_head;		// head of match list
+    int		w_next_match_id;	// next match ID
 #endif
 
     /*
@@ -3117,9 +3124,9 @@
      * entry 1: newer
      * entry 2: newest
      */
-    taggy_T	w_tagstack[TAGSTACKSIZE];	/* the tag stack */
-    int		w_tagstackidx;		/* idx just below active entry */
-    int		w_tagstacklen;		/* number of tags on stack */
+    taggy_T	w_tagstack[TAGSTACKSIZE];   // the tag stack
+    int		w_tagstackidx;		    // idx just below active entry
+    int		w_tagstacklen;		    // number of tags on stack
 
     /*
      * w_fraction is the fractional row of the cursor within the window, from
@@ -3131,17 +3138,17 @@
     int		w_prev_fraction_row;
 
 #ifdef FEAT_GUI
-    scrollbar_T	w_scrollbars[2];	/* vert. Scrollbars for this window */
+    scrollbar_T	w_scrollbars[2];	// vert. Scrollbars for this window
 #endif
 #ifdef FEAT_LINEBREAK
-    linenr_T	w_nrwidth_line_count;	/* line count when ml_nrwidth_width
-					 * was computed. */
-    long	w_nuw_cached;		/* 'numberwidth' option cached */
-    int		w_nrwidth_width;	/* nr of chars to print line count. */
+    linenr_T	w_nrwidth_line_count;	// line count when ml_nrwidth_width
+					// was computed.
+    long	w_nuw_cached;		// 'numberwidth' option cached
+    int		w_nrwidth_width;	// nr of chars to print line count.
 #endif
 
 #ifdef FEAT_QUICKFIX
-    qf_info_T	*w_llist;		/* Location list for this window */
+    qf_info_T	*w_llist;		// Location list for this window
     /*
      * Location list reference used in the location list window.
      * In a non-location list window, w_llist_ref is NULL.
@@ -3151,7 +3158,7 @@
 
 
 #ifdef FEAT_MZSCHEME
-    void	*w_mzscheme_ref;	/* The MzScheme value for this window */
+    void	*w_mzscheme_ref;	// The MzScheme value for this window
 #endif
 
 #ifdef FEAT_PERL
@@ -3159,11 +3166,11 @@
 #endif
 
 #ifdef FEAT_PYTHON
-    void	*w_python_ref;		/* The Python value for this window */
+    void	*w_python_ref;		// The Python value for this window
 #endif
 
 #ifdef FEAT_PYTHON3
-    void	*w_python3_ref;		/* The Python value for this window */
+    void	*w_python3_ref;		// The Python value for this window
 #endif
 
 #ifdef FEAT_TCL
@@ -3180,30 +3187,30 @@
  */
 typedef struct oparg_S
 {
-    int		op_type;	/* current pending operator type */
-    int		regname;	/* register to use for the operator */
-    int		motion_type;	/* type of the current cursor motion */
-    int		motion_force;	/* force motion type: 'v', 'V' or CTRL-V */
-    int		use_reg_one;	/* TRUE if delete uses reg 1 even when not
-				   linewise */
-    int		inclusive;	/* TRUE if char motion is inclusive (only
-				   valid when motion_type is MCHAR */
-    int		end_adjusted;	/* backuped b_op_end one char (only used by
-				   do_format()) */
-    pos_T	start;		/* start of the operator */
-    pos_T	end;		/* end of the operator */
-    pos_T	cursor_start;	/* cursor position before motion for "gw" */
+    int		op_type;	// current pending operator type
+    int		regname;	// register to use for the operator
+    int		motion_type;	// type of the current cursor motion
+    int		motion_force;	// force motion type: 'v', 'V' or CTRL-V
+    int		use_reg_one;	// TRUE if delete uses reg 1 even when not
+				// linewise
+    int		inclusive;	// TRUE if char motion is inclusive (only
+				// valid when motion_type is MCHAR
+    int		end_adjusted;	// backuped b_op_end one char (only used by
+				// do_format())
+    pos_T	start;		// start of the operator
+    pos_T	end;		// end of the operator
+    pos_T	cursor_start;	// cursor position before motion for "gw"
 
-    long	line_count;	/* number of lines from op_start to op_end
-				   (inclusive) */
-    int		empty;		/* op_start and op_end the same (only used by
-				   do_change()) */
-    int		is_VIsual;	/* operator on Visual area */
-    int		block_mode;	/* current operator is Visual block mode */
-    colnr_T	start_vcol;	/* start col for block mode operator */
-    colnr_T	end_vcol;	/* end col for block mode operator */
-    long	prev_opcount;	/* ca.opcount saved for K_CURSORHOLD */
-    long	prev_count0;	/* ca.count0 saved for K_CURSORHOLD */
+    long	line_count;	// number of lines from op_start to op_end
+				// (inclusive)
+    int		empty;		// op_start and op_end the same (only used by
+				// do_change())
+    int		is_VIsual;	// operator on Visual area
+    int		block_mode;	// current operator is Visual block mode
+    colnr_T	start_vcol;	// start col for block mode operator
+    colnr_T	end_vcol;	// end col for block mode operator
+    long	prev_opcount;	// ca.opcount saved for K_CURSORHOLD
+    long	prev_count0;	// ca.count0 saved for K_CURSORHOLD
 } oparg_T;
 
 /*
@@ -3211,77 +3218,77 @@
  */
 typedef struct cmdarg_S
 {
-    oparg_T	*oap;		/* Operator arguments */
-    int		prechar;	/* prefix character (optional, always 'g') */
-    int		cmdchar;	/* command character */
-    int		nchar;		/* next command character (optional) */
-    int		ncharC1;	/* first composing character (optional) */
-    int		ncharC2;	/* second composing character (optional) */
-    int		extra_char;	/* yet another character (optional) */
-    long	opcount;	/* count before an operator */
-    long	count0;		/* count before command, default 0 */
-    long	count1;		/* count before command, default 1 */
-    int		arg;		/* extra argument from nv_cmds[] */
-    int		retval;		/* return: CA_* values */
-    char_u	*searchbuf;	/* return: pointer to search pattern or NULL */
+    oparg_T	*oap;		// Operator arguments
+    int		prechar;	// prefix character (optional, always 'g')
+    int		cmdchar;	// command character
+    int		nchar;		// next command character (optional)
+    int		ncharC1;	// first composing character (optional)
+    int		ncharC2;	// second composing character (optional)
+    int		extra_char;	// yet another character (optional)
+    long	opcount;	// count before an operator
+    long	count0;		// count before command, default 0
+    long	count1;		// count before command, default 1
+    int		arg;		// extra argument from nv_cmds[]
+    int		retval;		// return: CA_* values
+    char_u	*searchbuf;	// return: pointer to search pattern or NULL
 } cmdarg_T;
 
-/* values for retval: */
-#define CA_COMMAND_BUSY	    1	/* skip restarting edit() once */
-#define CA_NO_ADJ_OP_END    2	/* don't adjust operator end */
+// values for retval:
+#define CA_COMMAND_BUSY	    1	// skip restarting edit() once
+#define CA_NO_ADJ_OP_END    2	// don't adjust operator end
 
 #ifdef CURSOR_SHAPE
 /*
  * struct to store values from 'guicursor' and 'mouseshape'
  */
 /* Indexes in shape_table[] */
-#define SHAPE_IDX_N	0	/* Normal mode */
-#define SHAPE_IDX_V	1	/* Visual mode */
-#define SHAPE_IDX_I	2	/* Insert mode */
-#define SHAPE_IDX_R	3	/* Replace mode */
-#define SHAPE_IDX_C	4	/* Command line Normal mode */
-#define SHAPE_IDX_CI	5	/* Command line Insert mode */
-#define SHAPE_IDX_CR	6	/* Command line Replace mode */
-#define SHAPE_IDX_O	7	/* Operator-pending mode */
-#define SHAPE_IDX_VE	8	/* Visual mode with 'selection' exclusive */
-#define SHAPE_IDX_CLINE	9	/* On command line */
-#define SHAPE_IDX_STATUS 10	/* A status line */
-#define SHAPE_IDX_SDRAG 11	/* dragging a status line */
-#define SHAPE_IDX_VSEP	12	/* A vertical separator line */
-#define SHAPE_IDX_VDRAG 13	/* dragging a vertical separator line */
-#define SHAPE_IDX_MORE	14	/* Hit-return or More */
-#define SHAPE_IDX_MOREL	15	/* Hit-return or More in last line */
-#define SHAPE_IDX_SM	16	/* showing matching paren */
+#define SHAPE_IDX_N	0	// Normal mode
+#define SHAPE_IDX_V	1	// Visual mode
+#define SHAPE_IDX_I	2	// Insert mode
+#define SHAPE_IDX_R	3	// Replace mode
+#define SHAPE_IDX_C	4	// Command line Normal mode
+#define SHAPE_IDX_CI	5	// Command line Insert mode
+#define SHAPE_IDX_CR	6	// Command line Replace mode
+#define SHAPE_IDX_O	7	// Operator-pending mode
+#define SHAPE_IDX_VE	8	// Visual mode with 'selection' exclusive
+#define SHAPE_IDX_CLINE	9	// On command line
+#define SHAPE_IDX_STATUS 10	// A status line
+#define SHAPE_IDX_SDRAG 11	// dragging a status line
+#define SHAPE_IDX_VSEP	12	// A vertical separator line
+#define SHAPE_IDX_VDRAG 13	// dragging a vertical separator line
+#define SHAPE_IDX_MORE	14	// Hit-return or More
+#define SHAPE_IDX_MOREL	15	// Hit-return or More in last line
+#define SHAPE_IDX_SM	16	// showing matching paren
 #define SHAPE_IDX_COUNT	17
 
-#define SHAPE_BLOCK	0	/* block cursor */
-#define SHAPE_HOR	1	/* horizontal bar cursor */
-#define SHAPE_VER	2	/* vertical bar cursor */
+#define SHAPE_BLOCK	0	// block cursor
+#define SHAPE_HOR	1	// horizontal bar cursor
+#define SHAPE_VER	2	// vertical bar cursor
 
-#define MSHAPE_NUMBERED	1000	/* offset for shapes identified by number */
-#define MSHAPE_HIDE	1	/* hide mouse pointer */
+#define MSHAPE_NUMBERED	1000	// offset for shapes identified by number
+#define MSHAPE_HIDE	1	// hide mouse pointer
 
-#define SHAPE_MOUSE	1	/* used for mouse pointer shape */
-#define SHAPE_CURSOR	2	/* used for text cursor shape */
+#define SHAPE_MOUSE	1	// used for mouse pointer shape
+#define SHAPE_CURSOR	2	// used for text cursor shape
 
 typedef struct cursor_entry
 {
-    int		shape;		/* one of the SHAPE_ defines */
-    int		mshape;		/* one of the MSHAPE defines */
-    int		percentage;	/* percentage of cell for bar */
-    long	blinkwait;	/* blinking, wait time before blinking starts */
-    long	blinkon;	/* blinking, on time */
-    long	blinkoff;	/* blinking, off time */
-    int		id;		/* highlight group ID */
-    int		id_lm;		/* highlight group ID for :lmap mode */
-    char	*name;		/* mode name (fixed) */
-    char	used_for;	/* SHAPE_MOUSE and/or SHAPE_CURSOR */
+    int		shape;		// one of the SHAPE_ defines
+    int		mshape;		// one of the MSHAPE defines
+    int		percentage;	// percentage of cell for bar
+    long	blinkwait;	// blinking, wait time before blinking starts
+    long	blinkon;	// blinking, on time
+    long	blinkoff;	// blinking, off time
+    int		id;		// highlight group ID
+    int		id_lm;		// highlight group ID for :lmap mode
+    char	*name;		// mode name (fixed)
+    char	used_for;	// SHAPE_MOUSE and/or SHAPE_CURSOR
 } cursorentry_T;
-#endif /* CURSOR_SHAPE */
+#endif // CURSOR_SHAPE
 
 #ifdef FEAT_MENU
 
-/* Indices into vimmenu_T->strings[] and vimmenu_T->noremap[] for each mode */
+// Indices into vimmenu_T->strings[] and vimmenu_T->noremap[] for each mode
 #define MENU_INDEX_INVALID	-1
 #define MENU_INDEX_NORMAL	0
 #define MENU_INDEX_VISUAL	1
@@ -3293,7 +3300,7 @@
 #define MENU_INDEX_TIP		7
 #define MENU_MODES		8
 
-/* Menu modes */
+// Menu modes
 #define MENU_NORMAL_MODE	(1 << MENU_INDEX_NORMAL)
 #define MENU_VISUAL_MODE	(1 << MENU_INDEX_VISUAL)
 #define MENU_SELECT_MODE	(1 << MENU_INDEX_SELECT)
@@ -3303,74 +3310,74 @@
 #define MENU_TERMINAL_MODE	(1 << MENU_INDEX_TERMINAL)
 #define MENU_TIP_MODE		(1 << MENU_INDEX_TIP)
 #define MENU_ALL_MODES		((1 << MENU_INDEX_TIP) - 1)
-/*note MENU_INDEX_TIP is not a 'real' mode*/
+// note MENU_INDEX_TIP is not a 'real' mode
 
-/* Start a menu name with this to not include it on the main menu bar */
+// Start a menu name with this to not include it on the main menu bar
 #define MNU_HIDDEN_CHAR		']'
 
 struct VimMenu
 {
-    int		modes;		    /* Which modes is this menu visible for? */
-    int		enabled;	    /* for which modes the menu is enabled */
-    char_u	*name;		    /* Name of menu, possibly translated */
-    char_u	*dname;		    /* Displayed Name ("name" without '&') */
+    int		modes;		    // Which modes is this menu visible for?
+    int		enabled;	    // for which modes the menu is enabled
+    char_u	*name;		    // Name of menu, possibly translated
+    char_u	*dname;		    // Displayed Name ("name" without '&')
 #ifdef FEAT_MULTI_LANG
-    char_u	*en_name;	    /* "name" untranslated, NULL when "name"
-				     * was not translated */
-    char_u	*en_dname;	    /* "dname" untranslated, NULL when "dname"
-				     * was not translated */
+    char_u	*en_name;	    // "name" untranslated, NULL when "name"
+				    // was not translated
+    char_u	*en_dname;	    // "dname" untranslated, NULL when "dname"
+				    // was not translated
 #endif
-    int		mnemonic;	    /* mnemonic key (after '&') */
-    char_u	*actext;	    /* accelerator text (after TAB) */
-    int		priority;	    /* Menu order priority */
+    int		mnemonic;	    // mnemonic key (after '&')
+    char_u	*actext;	    // accelerator text (after TAB)
+    int		priority;	    // Menu order priority
 #ifdef FEAT_GUI
-    void	(*cb)(vimmenu_T *);	    /* Call-back routine */
+    void	(*cb)(vimmenu_T *); // Call-back function
 #endif
 #ifdef FEAT_TOOLBAR
-    char_u	*iconfile;	    /* name of file for icon or NULL */
-    int		iconidx;	    /* icon index (-1 if not set) */
-    int		icon_builtin;	    /* icon names is BuiltIn{nr} */
+    char_u	*iconfile;	    // name of file for icon or NULL
+    int		iconidx;	    // icon index (-1 if not set)
+    int		icon_builtin;	    // icon names is BuiltIn{nr}
 #endif
-    char_u	*strings[MENU_MODES]; /* Mapped string for each mode */
-    int		noremap[MENU_MODES]; /* A REMAP_ flag for each mode */
-    char	silent[MENU_MODES]; /* A silent flag for each mode */
-    vimmenu_T	*children;	    /* Children of sub-menu */
-    vimmenu_T	*parent;	    /* Parent of menu */
-    vimmenu_T	*next;		    /* Next item in menu */
+    char_u	*strings[MENU_MODES]; // Mapped string for each mode
+    int		noremap[MENU_MODES]; // A REMAP_ flag for each mode
+    char	silent[MENU_MODES]; // A silent flag for each mode
+    vimmenu_T	*children;	    // Children of sub-menu
+    vimmenu_T	*parent;	    // Parent of menu
+    vimmenu_T	*next;		    // Next item in menu
 #ifdef FEAT_GUI_X11
-    Widget	id;		    /* Manage this to enable item */
-    Widget	submenu_id;	    /* If this is submenu, add children here */
+    Widget	id;		    // Manage this to enable item
+    Widget	submenu_id;	    // If this is submenu, add children here
 #endif
 #ifdef FEAT_GUI_GTK
-    GtkWidget	*id;		    /* Manage this to enable item */
-    GtkWidget	*submenu_id;	    /* If this is submenu, add children here */
+    GtkWidget	*id;		    // Manage this to enable item
+    GtkWidget	*submenu_id;	    // If this is submenu, add children here
 # if defined(GTK_CHECK_VERSION) && !GTK_CHECK_VERSION(3,4,0)
     GtkWidget	*tearoff_handle;
 # endif
-    GtkWidget   *label;		    /* Used by "set wak=" code. */
+    GtkWidget   *label;		    // Used by "set wak=" code.
 #endif
 #ifdef FEAT_GUI_MOTIF
-    int		sensitive;	    /* turn button on/off */
-    char	**xpm;		    /* pixmap data */
-    char	*xpm_fname;	    /* file with pixmap data */
+    int		sensitive;	    // turn button on/off
+    char	**xpm;		    // pixmap data
+    char	*xpm_fname;	    // file with pixmap data
 #endif
 #ifdef FEAT_GUI_ATHENA
-    Pixmap	image;		    /* Toolbar image */
+    Pixmap	image;		    // Toolbar image
 #endif
 #ifdef FEAT_BEVAL_TIP
-    BalloonEval *tip;		    /* tooltip for this menu item */
+    BalloonEval *tip;		    // tooltip for this menu item
 #endif
 #ifdef FEAT_GUI_MSWIN
-    UINT	id;		    /* Id of menu item */
-    HMENU	submenu_id;	    /* If this is submenu, add children here */
-    HWND	tearoff_handle;	    /* hWnd of tearoff if created */
+    UINT	id;		    // Id of menu item
+    HMENU	submenu_id;	    // If this is submenu, add children here
+    HWND	tearoff_handle;	    // hWnd of tearoff if created
 #endif
 #ifdef FEAT_GUI_MAC
-/*  MenuHandle	id; */
-/*  short	index;	*/	    /* the item index within the father menu */
-    short	menu_id;	    /* the menu id to which this item belong */
-    short	submenu_id;	    /* the menu id of the children (could be
-				       get through some tricks) */
+//  MenuHandle	id;
+//  short	index;		    // the item index within the father menu
+    short	menu_id;	    // the menu id to which this item belong
+    short	submenu_id;	    // the menu id of the children (could be
+				    // get through some tricks)
     MenuHandle	menu_handle;
     MenuHandle	submenu_handle;
 #endif
@@ -3380,10 +3387,10 @@
 #endif
 };
 #else
-/* For generating prototypes when FEAT_MENU isn't defined. */
+// For generating prototypes when FEAT_MENU isn't defined.
 typedef int vimmenu_T;
 
-#endif /* FEAT_MENU */
+#endif // FEAT_MENU
 
 /*
  * Struct to save values in before executing autocommands for a buffer that is
@@ -3391,13 +3398,13 @@
  */
 typedef struct
 {
-    buf_T	*save_curbuf;	/* saved curbuf */
-    int		use_aucmd_win;	/* using aucmd_win */
-    win_T	*save_curwin;	/* saved curwin */
-    win_T	*new_curwin;	/* new curwin */
-    win_T	*save_prevwin;	/* saved prevwin */
-    bufref_T	new_curbuf;	/* new curbuf */
-    char_u	*globaldir;	/* saved value of globaldir */
+    buf_T	*save_curbuf;	// saved curbuf
+    int		use_aucmd_win;	// using aucmd_win
+    win_T	*save_curwin;	// saved curwin
+    win_T	*new_curwin;	// new curwin
+    win_T	*save_prevwin;	// saved prevwin
+    bufref_T	new_curbuf;	// new curbuf
+    char_u	*globaldir;	// saved value of globaldir
 } aco_save_T;
 
 /*
@@ -3408,7 +3415,7 @@
     const char	*name;
     int		hasnum;
     long	number;
-    char_u	*string;	/* points into option string */
+    char_u	*string;	// points into option string
     int		strlen;
     int		present;
 } option_table_T;
@@ -3457,10 +3464,10 @@
  */
 typedef struct
 {
-    char_u	*pum_text;	/* main menu text */
-    char_u	*pum_kind;	/* extra kind text (may be truncated) */
-    char_u	*pum_extra;	/* extra menu text (may be truncated) */
-    char_u	*pum_info;	/* extra info */
+    char_u	*pum_text;	// main menu text
+    char_u	*pum_kind;	// extra kind text (may be truncated)
+    char_u	*pum_extra;	// extra menu text (may be truncated)
+    char_u	*pum_info;	// extra info
 } pumitem_T;
 
 /*
@@ -3468,8 +3475,8 @@
  */
 typedef struct
 {
-    char_u	*tn_tags;	/* value of 'tags' when starting */
-    char_u	*tn_np;		/* current position in tn_tags */
+    char_u	*tn_tags;	// value of 'tags' when starting
+    char_u	*tn_np;		// current position in tn_tags
     int		tn_did_filefind_init;
     int		tn_hf_idx;
     void	*tn_search_ctx;
@@ -3502,79 +3509,79 @@
  */
 struct js_reader
 {
-    char_u	*js_buf;	/* text to be decoded */
-    char_u	*js_end;	/* NUL in js_buf */
-    int		js_used;	/* bytes used from js_buf */
+    char_u	*js_buf;	// text to be decoded
+    char_u	*js_end;	// NUL in js_buf
+    int		js_used;	// bytes used from js_buf
     int		(*js_fill)(struct js_reader *);
-				/* function to fill the buffer or NULL;
-				 * return TRUE when the buffer was filled */
-    void	*js_cookie;	/* can be used by js_fill */
-    int		js_cookie_arg;	/* can be used by js_fill */
+				// function to fill the buffer or NULL;
+				// return TRUE when the buffer was filled
+    void	*js_cookie;	// can be used by js_fill
+    int		js_cookie_arg;	// can be used by js_fill
 };
 typedef struct js_reader js_read_T;
 
-/* Maximum number of commands from + or -c arguments. */
+// Maximum number of commands from + or -c arguments.
 #define MAX_ARG_CMDS 10
 
-/* values for "window_layout" */
-#define WIN_HOR	    1	    /* "-o" horizontally split windows */
-#define	WIN_VER	    2	    /* "-O" vertically split windows */
-#define	WIN_TABS    3	    /* "-p" windows on tab pages */
+// values for "window_layout"
+#define WIN_HOR	    1	    // "-o" horizontally split windows
+#define	WIN_VER	    2	    // "-O" vertically split windows
+#define	WIN_TABS    3	    // "-p" windows on tab pages
 
-/* Struct for various parameters passed between main() and other functions. */
+// Struct for various parameters passed between main() and other functions.
 typedef struct
 {
     int		argc;
     char	**argv;
 
-    char_u	*fname;			/* first file to edit */
+    char_u	*fname;			// first file to edit
 
-    int		evim_mode;		/* started as "evim" */
-    char_u	*use_vimrc;		/* vimrc from -u argument */
-    int		clean;			/* --clean argument */
+    int		evim_mode;		// started as "evim"
+    char_u	*use_vimrc;		// vimrc from -u argument
+    int		clean;			// --clean argument
 
-    int		n_commands;		     /* no. of commands from + or -c */
-    char_u	*commands[MAX_ARG_CMDS];     /* commands from + or -c arg. */
-    char_u	cmds_tofree[MAX_ARG_CMDS];   /* commands that need free() */
-    int		n_pre_commands;		     /* no. of commands from --cmd */
-    char_u	*pre_commands[MAX_ARG_CMDS]; /* commands from --cmd argument */
+    int		n_commands;		     // no. of commands from + or -c
+    char_u	*commands[MAX_ARG_CMDS];     // commands from + or -c arg.
+    char_u	cmds_tofree[MAX_ARG_CMDS];   // commands that need free()
+    int		n_pre_commands;		     // no. of commands from --cmd
+    char_u	*pre_commands[MAX_ARG_CMDS]; // commands from --cmd argument
 
-    int		edit_type;		/* type of editing to do */
-    char_u	*tagname;		/* tag from -t argument */
+    int		edit_type;		// type of editing to do
+    char_u	*tagname;		// tag from -t argument
 #ifdef FEAT_QUICKFIX
-    char_u	*use_ef;		/* 'errorfile' from -q argument */
+    char_u	*use_ef;		// 'errorfile' from -q argument
 #endif
 
     int		want_full_screen;
-    int		not_a_term;		/* no warning for missing term? */
-    int		tty_fail;		/* exit if not a tty */
-    char_u	*term;			/* specified terminal name */
+    int		not_a_term;		// no warning for missing term?
+    int		tty_fail;		// exit if not a tty
+    char_u	*term;			// specified terminal name
 #ifdef FEAT_CRYPT
-    int		ask_for_key;		/* -x argument */
+    int		ask_for_key;		// -x argument
 #endif
-    int		no_swap_file;		/* "-n" argument used */
+    int		no_swap_file;		// "-n" argument used
 #ifdef FEAT_EVAL
     int		use_debug_break_level;
 #endif
-    int		window_count;		/* number of windows to use */
-    int		window_layout;		/* 0, WIN_HOR, WIN_VER or WIN_TABS */
+    int		window_count;		// number of windows to use
+    int		window_layout;		// 0, WIN_HOR, WIN_VER or WIN_TABS
 
 #ifdef FEAT_CLIENTSERVER
-    int		serverArg;		/* TRUE when argument for a server */
-    char_u	*serverName_arg;	/* cmdline arg for server name */
-    char_u	*serverStr;		/* remote server command */
-    char_u	*serverStrEnc;		/* encoding of serverStr */
-    char_u	*servername;		/* allocated name for our server */
+    int		serverArg;		// TRUE when argument for a server
+    char_u	*serverName_arg;	// cmdline arg for server name
+    char_u	*serverStr;		// remote server command
+    char_u	*serverStrEnc;		// encoding of serverStr
+    char_u	*servername;		// allocated name for our server
 #endif
 #if !defined(UNIX)
 # define EXPAND_FILENAMES
-    int		literal;		/* don't expand file names */
+    int		literal;		// don't expand file names
 #endif
 #ifdef MSWIN
-    int		full_path;		/* file name argument was full path */
+    int		full_path;		// file name argument was full path
 #endif
 #ifdef FEAT_DIFF
-    int		diff_mode;		/* start with 'diff' set */
+    int		diff_mode;		// start with 'diff' set
 #endif
 } mparm_T;
 
@@ -3607,25 +3614,25 @@
  */
 typedef struct lval_S
 {
-    char_u	*ll_name;	/* start of variable name (can be NULL) */
-    char_u	*ll_exp_name;	/* NULL or expanded name in allocated memory. */
-    typval_T	*ll_tv;		/* Typeval of item being used.  If "newkey"
-				   isn't NULL it's the Dict to which to add
-				   the item. */
-    listitem_T	*ll_li;		/* The list item or NULL. */
-    list_T	*ll_list;	/* The list or NULL. */
-    int		ll_range;	/* TRUE when a [i:j] range was used */
-    long	ll_n1;		/* First index for list */
-    long	ll_n2;		/* Second index for list range */
-    int		ll_empty2;	/* Second index is empty: [i:] */
-    dict_T	*ll_dict;	/* The Dictionary or NULL */
-    dictitem_T	*ll_di;		/* The dictitem or NULL */
-    char_u	*ll_newkey;	/* New key for Dict in alloc. mem or NULL. */
-    blob_T	*ll_blob;	/* The Blob or NULL */
+    char_u	*ll_name;	// start of variable name (can be NULL)
+    char_u	*ll_exp_name;	// NULL or expanded name in allocated memory.
+    typval_T	*ll_tv;		// Typeval of item being used.  If "newkey"
+				// isn't NULL it's the Dict to which to add
+				// the item.
+    listitem_T	*ll_li;		// The list item or NULL.
+    list_T	*ll_list;	// The list or NULL.
+    int		ll_range;	// TRUE when a [i:j] range was used
+    long	ll_n1;		// First index for list
+    long	ll_n2;		// Second index for list range
+    int		ll_empty2;	// Second index is empty: [i:]
+    dict_T	*ll_dict;	// The Dictionary or NULL
+    dictitem_T	*ll_di;		// The dictitem or NULL
+    char_u	*ll_newkey;	// New key for Dict in alloc. mem or NULL.
+    blob_T	*ll_blob;	// The Blob or NULL
 } lval_T;
 
-/* Structure used to save the current state.  Used when executing Normal mode
- * commands while in any other mode. */
+// Structure used to save the current state.  Used when executing Normal mode
+// commands while in any other mode.
 typedef struct {
     int		save_msg_scroll;
     int		save_restart_edit;