diff --git a/src/indent.c b/src/indent.c
index 32f1e12..1662292 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -1534,25 +1534,25 @@
     long	len;
     long	col;
     long	vcol;
-    long	start_col = 0;		/* For start of white-space string */
-    long	start_vcol = 0;		/* For start of white-space string */
+    long	start_col = 0;		// For start of white-space string
+    long	start_vcol = 0;		// For start of white-space string
     long	old_len;
     char_u	*ptr;
-    char_u	*new_line = (char_u *)1;    /* init to non-NULL */
-    int		did_undo;		/* called u_save for current line */
+    char_u	*new_line = (char_u *)1; // init to non-NULL
+    int		did_undo;		// called u_save for current line
 #ifdef FEAT_VARTABS
     int		*new_vts_array = NULL;
-    char_u	*new_ts_str;		/* string value of tab argument */
+    char_u	*new_ts_str;		// string value of tab argument
 #else
     int		temp;
     int		new_ts;
 #endif
     int		save_list;
-    linenr_T	first_line = 0;		/* first changed line */
-    linenr_T	last_line = 0;		/* last changed line */
+    linenr_T	first_line = 0;		// first changed line
+    linenr_T	last_line = 0;		// last changed line
 
     save_list = curwin->w_p_list;
-    curwin->w_p_list = 0;	    /* don't want list mode here */
+    curwin->w_p_list = 0;	    // don't want list mode here
 
 #ifdef FEAT_VARTABS
     new_ts_str = eap->arg;
@@ -1593,7 +1593,7 @@
 	    {
 		if (!got_tab && num_spaces == 0)
 		{
-		    /* First consecutive white-space */
+		    // First consecutive white-space
 		    start_vcol = vcol;
 		    start_col = col;
 		}
@@ -1606,9 +1606,9 @@
 	    {
 		if (got_tab || (eap->forceit && num_spaces > 1))
 		{
-		    /* Retabulate this string of white-space */
+		    // Retabulate this string of white-space
 
-		    /* len is virtual length of white string */
+		    // len is virtual length of white string
 		    len = num_spaces = vcol - start_vcol;
 		    num_tabs = 0;
 		    if (!curbuf->b_p_et)
@@ -1640,12 +1640,12 @@
 			    if (u_save((linenr_T)(lnum - 1),
 						(linenr_T)(lnum + 1)) == FAIL)
 			    {
-				new_line = NULL;	/* flag out-of-memory */
+				new_line = NULL;	// flag out-of-memory
 				break;
 			    }
 			}
 
-			/* len is actual number of white characters used */
+			// len is actual number of white characters used
 			len = num_spaces + num_tabs;
 			old_len = (long)STRLEN(ptr);
 			new_line = alloc(old_len - col + start_col + len + 1);
@@ -1677,7 +1677,7 @@
 	    else
 		++col;
 	}
-	if (new_line == NULL)		    /* out of memory */
+	if (new_line == NULL)		    // out of memory
 	    break;
 	line_breakcheck();
     }
@@ -1690,10 +1690,10 @@
     if (tabstop_count(curbuf->b_p_vts_array) == 0
 	&& tabstop_count(new_vts_array) == 1
 	&& curbuf->b_p_ts == tabstop_first(new_vts_array))
-	; /* not changed */
+	; // not changed
     else if (tabstop_count(curbuf->b_p_vts_array) > 0
         && tabstop_eq(curbuf->b_p_vts_array, new_vts_array))
-	; /* not changed */
+	; // not changed
     else
 	redraw_curbuf_later(NOT_VALID);
 #else
@@ -1703,10 +1703,10 @@
     if (first_line != 0)
 	changed_lines(first_line, 0, last_line + 1, 0L);
 
-    curwin->w_p_list = save_list;	/* restore 'list' */
+    curwin->w_p_list = save_list;	// restore 'list'
 
 #ifdef FEAT_VARTABS
-    if (new_ts_str != NULL)		/* set the new tabstop */
+    if (new_ts_str != NULL)		// set the new tabstop
     {
 	// If 'vartabstop' is in use or if the value given to retab has more
 	// than one tabstop then update 'vartabstop'.