diff --git a/src/session.c b/src/session.c
new file mode 100644
index 0000000..aa95be1
--- /dev/null
+++ b/src/session.c
@@ -0,0 +1,1346 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * session.c: session related functions
+ */
+
+#include "vim.h"
+
+#if defined(FEAT_SESSION) || defined(PROTO)
+
+static int did_lcd;	// whether ":lcd" was produced for a session
+
+/*
+ * Write a file name to the session file.
+ * Takes care of the "slash" option in 'sessionoptions' and escapes special
+ * characters.
+ * Returns FAIL if writing fails or out of memory.
+ */
+    static int
+ses_put_fname(FILE *fd, char_u *name, unsigned *flagp)
+{
+    char_u	*sname;
+    char_u	*p;
+    int		retval = OK;
+
+    sname = home_replace_save(NULL, name);
+    if (sname == NULL)
+	return FAIL;
+
+    if (*flagp & SSOP_SLASH)
+    {
+	// change all backslashes to forward slashes
+	for (p = sname; *p != NUL; MB_PTR_ADV(p))
+	    if (*p == '\\')
+		*p = '/';
+    }
+
+    // escape special characters
+    p = vim_strsave_fnameescape(sname, FALSE);
+    vim_free(sname);
+    if (p == NULL)
+	return FAIL;
+
+    // write the result
+    if (fputs((char *)p, fd) < 0)
+	retval = FAIL;
+
+    vim_free(p);
+    return retval;
+}
+
+/*
+ * Write a buffer name to the session file.
+ * Also ends the line, if "add_eol" is TRUE.
+ * Returns FAIL if writing fails.
+ */
+    static int
+ses_fname(FILE *fd, buf_T *buf, unsigned *flagp, int add_eol)
+{
+    char_u	*name;
+
+    // Use the short file name if the current directory is known at the time
+    // the session file will be sourced.
+    // Don't do this for ":mkview", we don't know the current directory.
+    // Don't do this after ":lcd", we don't keep track of what the current
+    // directory is.
+    if (buf->b_sfname != NULL
+	    && flagp == &ssop_flags
+	    && (ssop_flags & (SSOP_CURDIR | SSOP_SESDIR))
+#ifdef FEAT_AUTOCHDIR
+	    && !p_acd
+#endif
+	    && !did_lcd)
+	name = buf->b_sfname;
+    else
+	name = buf->b_ffname;
+    if (ses_put_fname(fd, name, flagp) == FAIL
+	    || (add_eol && put_eol(fd) == FAIL))
+	return FAIL;
+    return OK;
+}
+
+/*
+ * Write an argument list to the session file.
+ * Returns FAIL if writing fails.
+ */
+    static int
+ses_arglist(
+    FILE	*fd,
+    char	*cmd,
+    garray_T	*gap,
+    int		fullname,	// TRUE: use full path name
+    unsigned	*flagp)
+{
+    int		i;
+    char_u	*buf = NULL;
+    char_u	*s;
+
+    if (fputs(cmd, fd) < 0 || put_eol(fd) == FAIL)
+	return FAIL;
+    if (put_line(fd, "%argdel") == FAIL)
+	return FAIL;
+    for (i = 0; i < gap->ga_len; ++i)
+    {
+	// NULL file names are skipped (only happens when out of memory).
+	s = alist_name(&((aentry_T *)gap->ga_data)[i]);
+	if (s != NULL)
+	{
+	    if (fullname)
+	    {
+		buf = alloc(MAXPATHL);
+		if (buf != NULL)
+		{
+		    (void)vim_FullName(s, buf, MAXPATHL, FALSE);
+		    s = buf;
+		}
+	    }
+	    if (fputs("$argadd ", fd) < 0
+		    || ses_put_fname(fd, s, flagp) == FAIL
+		    || put_eol(fd) == FAIL)
+	    {
+		vim_free(buf);
+		return FAIL;
+	    }
+	    vim_free(buf);
+	}
+    }
+    return OK;
+}
+
+/*
+ * Return non-zero if window "wp" is to be stored in the Session.
+ */
+    static int
+ses_do_win(win_T *wp)
+{
+#ifdef FEAT_TERMINAL
+    if (bt_terminal(wp->w_buffer))
+	return !term_is_finished(wp->w_buffer)
+	    && (ssop_flags & SSOP_TERMINAL)
+	    && term_should_restore(wp->w_buffer);
+#endif
+    if (wp->w_buffer->b_fname == NULL
+#ifdef FEAT_QUICKFIX
+	    // When 'buftype' is "nofile" can't restore the window contents.
+	    || bt_nofilename(wp->w_buffer)
+#endif
+       )
+	return (ssop_flags & SSOP_BLANK);
+    if (bt_help(wp->w_buffer))
+	return (ssop_flags & SSOP_HELP);
+    return TRUE;
+}
+
+/*
+ * Return TRUE if frame "fr" has a window somewhere that we want to save in
+ * the Session.
+ */
+    static int
+ses_do_frame(frame_T *fr)
+{
+    frame_T	*frc;
+
+    if (fr->fr_layout == FR_LEAF)
+	return ses_do_win(fr->fr_win);
+    FOR_ALL_FRAMES(frc, fr->fr_child)
+	if (ses_do_frame(frc))
+	    return TRUE;
+    return FALSE;
+}
+
+/*
+ * Skip frames that don't contain windows we want to save in the Session.
+ * Returns NULL when there none.
+ */
+    static frame_T *
+ses_skipframe(frame_T *fr)
+{
+    frame_T	*frc;
+
+    FOR_ALL_FRAMES(frc, fr)
+	if (ses_do_frame(frc))
+	    break;
+    return frc;
+}
+
+/*
+ * Write commands to "fd" to recursively create windows for frame "fr",
+ * horizontally and vertically split.
+ * After the commands the last window in the frame is the current window.
+ * Returns FAIL when writing the commands to "fd" fails.
+ */
+    static int
+ses_win_rec(FILE *fd, frame_T *fr)
+{
+    frame_T	*frc;
+    int		count = 0;
+
+    if (fr->fr_layout != FR_LEAF)
+    {
+	// Find first frame that's not skipped and then create a window for
+	// each following one (first frame is already there).
+	frc = ses_skipframe(fr->fr_child);
+	if (frc != NULL)
+	    while ((frc = ses_skipframe(frc->fr_next)) != NULL)
+	    {
+		// Make window as big as possible so that we have lots of room
+		// to split.
+		if (put_line(fd, "wincmd _ | wincmd |") == FAIL
+			|| put_line(fd, fr->fr_layout == FR_COL
+						? "split" : "vsplit") == FAIL)
+		    return FAIL;
+		++count;
+	    }
+
+	// Go back to the first window.
+	if (count > 0 && (fprintf(fd, fr->fr_layout == FR_COL
+			? "%dwincmd k" : "%dwincmd h", count) < 0
+						      || put_eol(fd) == FAIL))
+	    return FAIL;
+
+	// Recursively create frames/windows in each window of this column or
+	// row.
+	frc = ses_skipframe(fr->fr_child);
+	while (frc != NULL)
+	{
+	    ses_win_rec(fd, frc);
+	    frc = ses_skipframe(frc->fr_next);
+	    // Go to next window.
+	    if (frc != NULL && put_line(fd, "wincmd w") == FAIL)
+		return FAIL;
+	}
+    }
+    return OK;
+}
+
+    static int
+ses_winsizes(
+    FILE	*fd,
+    int		restore_size,
+    win_T	*tab_firstwin)
+{
+    int		n = 0;
+    win_T	*wp;
+
+    if (restore_size && (ssop_flags & SSOP_WINSIZE))
+    {
+	for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
+	{
+	    if (!ses_do_win(wp))
+		continue;
+	    ++n;
+
+	    // restore height when not full height
+	    if (wp->w_height + wp->w_status_height < topframe->fr_height
+		    && (fprintf(fd,
+			  "exe '%dresize ' . ((&lines * %ld + %ld) / %ld)",
+			    n, (long)wp->w_height, Rows / 2, Rows) < 0
+						  || put_eol(fd) == FAIL))
+		return FAIL;
+
+	    // restore width when not full width
+	    if (wp->w_width < Columns && (fprintf(fd,
+		   "exe 'vert %dresize ' . ((&columns * %ld + %ld) / %ld)",
+			    n, (long)wp->w_width, Columns / 2, Columns) < 0
+						  || put_eol(fd) == FAIL))
+		return FAIL;
+	}
+    }
+    else
+    {
+	// Just equalise window sizes
+	if (put_line(fd, "wincmd =") == FAIL)
+	    return FAIL;
+    }
+    return OK;
+}
+
+    static int
+put_view_curpos(FILE *fd, win_T *wp, char *spaces)
+{
+    int r;
+
+    if (wp->w_curswant == MAXCOL)
+	r = fprintf(fd, "%snormal! $", spaces);
+    else
+	r = fprintf(fd, "%snormal! 0%d|", spaces, wp->w_virtcol + 1);
+    return r < 0 || put_eol(fd) == FAIL ? FALSE : OK;
+}
+
+/*
+ * Write commands to "fd" to restore the view of a window.
+ * Caller must make sure 'scrolloff' is zero.
+ */
+    static int
+put_view(
+    FILE	*fd,
+    win_T	*wp,
+    int		add_edit,	// add ":edit" command to view
+    unsigned	*flagp,		// vop_flags or ssop_flags
+    int		current_arg_idx) // current argument index of the window, use
+				 // -1 if unknown
+{
+    win_T	*save_curwin;
+    int		f;
+    int		do_cursor;
+    int		did_next = FALSE;
+
+    // Always restore cursor position for ":mksession".  For ":mkview" only
+    // when 'viewoptions' contains "cursor".
+    do_cursor = (flagp == &ssop_flags || *flagp & SSOP_CURSOR);
+
+    // Local argument list.
+    if (wp->w_alist == &global_alist)
+    {
+	if (put_line(fd, "argglobal") == FAIL)
+	    return FAIL;
+    }
+    else
+    {
+	if (ses_arglist(fd, "arglocal", &wp->w_alist->al_ga,
+			flagp == &vop_flags
+			|| !(*flagp & SSOP_CURDIR)
+			|| wp->w_localdir != NULL, flagp) == FAIL)
+	    return FAIL;
+    }
+
+    // Only when part of a session: restore the argument index.  Some
+    // arguments may have been deleted, check if the index is valid.
+    if (wp->w_arg_idx != current_arg_idx && wp->w_arg_idx < WARGCOUNT(wp)
+						      && flagp == &ssop_flags)
+    {
+	if (fprintf(fd, "%ldargu", (long)wp->w_arg_idx + 1) < 0
+		|| put_eol(fd) == FAIL)
+	    return FAIL;
+	did_next = TRUE;
+    }
+
+    // Edit the file.  Skip this when ":next" already did it.
+    if (add_edit && (!did_next || wp->w_arg_idx_invalid))
+    {
+# ifdef FEAT_TERMINAL
+	if (bt_terminal(wp->w_buffer))
+	{
+	    if (term_write_session(fd, wp) == FAIL)
+		return FAIL;
+	}
+	else
+# endif
+	// Load the file.
+	if (wp->w_buffer->b_ffname != NULL
+# ifdef FEAT_QUICKFIX
+		&& !bt_nofilename(wp->w_buffer)
+# endif
+		)
+	{
+	    // Editing a file in this buffer: use ":edit file".
+	    // This may have side effects! (e.g., compressed or network file).
+	    //
+	    // Note, if a buffer for that file already exists, use :badd to
+	    // edit that buffer, to not lose folding information (:edit resets
+	    // folds in other buffers)
+	    if (fputs("if bufexists(\"", fd) < 0
+		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
+		    || fputs("\") | buffer ", fd) < 0
+		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
+		    || fputs(" | else | edit ", fd) < 0
+		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
+		    || fputs(" | endif", fd) < 0
+		    || put_eol(fd) == FAIL)
+		return FAIL;
+	}
+	else
+	{
+	    // No file in this buffer, just make it empty.
+	    if (put_line(fd, "enew") == FAIL)
+		return FAIL;
+#ifdef FEAT_QUICKFIX
+	    if (wp->w_buffer->b_ffname != NULL)
+	    {
+		// The buffer does have a name, but it's not a file name.
+		if (fputs("file ", fd) < 0
+			|| ses_fname(fd, wp->w_buffer, flagp, TRUE) == FAIL)
+		    return FAIL;
+	    }
+#endif
+	    do_cursor = FALSE;
+	}
+    }
+
+    // Local mappings and abbreviations.
+    if ((*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
+					 && makemap(fd, wp->w_buffer) == FAIL)
+	return FAIL;
+
+    // Local options.  Need to go to the window temporarily.
+    // Store only local values when using ":mkview" and when ":mksession" is
+    // used and 'sessionoptions' doesn't include "options".
+    // Some folding options are always stored when "folds" is included,
+    // otherwise the folds would not be restored correctly.
+    save_curwin = curwin;
+    curwin = wp;
+    curbuf = curwin->w_buffer;
+    if (*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
+	f = makeset(fd, OPT_LOCAL,
+			     flagp == &vop_flags || !(*flagp & SSOP_OPTIONS));
+#ifdef FEAT_FOLDING
+    else if (*flagp & SSOP_FOLDS)
+	f = makefoldset(fd);
+#endif
+    else
+	f = OK;
+    curwin = save_curwin;
+    curbuf = curwin->w_buffer;
+    if (f == FAIL)
+	return FAIL;
+
+#ifdef FEAT_FOLDING
+    // Save Folds when 'buftype' is empty and for help files.
+    if ((*flagp & SSOP_FOLDS)
+	    && wp->w_buffer->b_ffname != NULL
+	    && (bt_normal(wp->w_buffer) || bt_help(wp->w_buffer)))
+    {
+	if (put_folds(fd, wp) == FAIL)
+	    return FAIL;
+    }
+#endif
+
+    // Set the cursor after creating folds, since that moves the cursor.
+    if (do_cursor)
+    {
+
+	// Restore the cursor line in the file and relatively in the
+	// window.  Don't use "G", it changes the jumplist.
+	if (fprintf(fd, "let s:l = %ld - ((%ld * winheight(0) + %ld) / %ld)",
+		    (long)wp->w_cursor.lnum,
+		    (long)(wp->w_cursor.lnum - wp->w_topline),
+		    (long)wp->w_height / 2, (long)wp->w_height) < 0
+		|| put_eol(fd) == FAIL
+		|| put_line(fd, "if s:l < 1 | let s:l = 1 | endif") == FAIL
+		|| put_line(fd, "exe s:l") == FAIL
+		|| put_line(fd, "normal! zt") == FAIL
+		|| fprintf(fd, "%ld", (long)wp->w_cursor.lnum) < 0
+		|| put_eol(fd) == FAIL)
+	    return FAIL;
+	// Restore the cursor column and left offset when not wrapping.
+	if (wp->w_cursor.col == 0)
+	{
+	    if (put_line(fd, "normal! 0") == FAIL)
+		return FAIL;
+	}
+	else
+	{
+	    if (!wp->w_p_wrap && wp->w_leftcol > 0 && wp->w_width > 0)
+	    {
+		if (fprintf(fd,
+			  "let s:c = %ld - ((%ld * winwidth(0) + %ld) / %ld)",
+			    (long)wp->w_virtcol + 1,
+			    (long)(wp->w_virtcol - wp->w_leftcol),
+			    (long)wp->w_width / 2, (long)wp->w_width) < 0
+			|| put_eol(fd) == FAIL
+			|| put_line(fd, "if s:c > 0") == FAIL
+			|| fprintf(fd,
+			    "  exe 'normal! ' . s:c . '|zs' . %ld . '|'",
+			    (long)wp->w_virtcol + 1) < 0
+			|| put_eol(fd) == FAIL
+			|| put_line(fd, "else") == FAIL
+			|| put_view_curpos(fd, wp, "  ") == FAIL
+			|| put_line(fd, "endif") == FAIL)
+		    return FAIL;
+	    }
+	    else if (put_view_curpos(fd, wp, "") == FAIL)
+		return FAIL;
+	}
+    }
+
+    // Local directory, if the current flag is not view options or the "curdir"
+    // option is included.
+    if (wp->w_localdir != NULL
+			    && (flagp != &vop_flags || (*flagp & SSOP_CURDIR)))
+    {
+	if (fputs("lcd ", fd) < 0
+		|| ses_put_fname(fd, wp->w_localdir, flagp) == FAIL
+		|| put_eol(fd) == FAIL)
+	    return FAIL;
+	did_lcd = TRUE;
+    }
+
+    return OK;
+}
+
+#ifdef FEAT_EVAL
+    static int
+store_session_globals(FILE *fd)
+{
+    hashitem_T	*hi;
+    dictitem_T	*this_var;
+    int		todo;
+    char_u	*p, *t;
+
+    todo = (int)globvarht.ht_used;
+    for (hi = globvarht.ht_array; todo > 0; ++hi)
+    {
+	if (!HASHITEM_EMPTY(hi))
+	{
+	    --todo;
+	    this_var = HI2DI(hi);
+	    if ((this_var->di_tv.v_type == VAR_NUMBER
+			|| this_var->di_tv.v_type == VAR_STRING)
+		    && var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION)
+	    {
+		// Escape special characters with a backslash.  Turn a LF and
+		// CR into \n and \r.
+		p = vim_strsave_escaped(tv_get_string(&this_var->di_tv),
+							(char_u *)"\\\"\n\r");
+		if (p == NULL)	    // out of memory
+		    break;
+		for (t = p; *t != NUL; ++t)
+		    if (*t == '\n')
+			*t = 'n';
+		    else if (*t == '\r')
+			*t = 'r';
+		if ((fprintf(fd, "let %s = %c%s%c",
+				this_var->di_key,
+				(this_var->di_tv.v_type == VAR_STRING) ? '"'
+									: ' ',
+				p,
+				(this_var->di_tv.v_type == VAR_STRING) ? '"'
+								   : ' ') < 0)
+			|| put_eol(fd) == FAIL)
+		{
+		    vim_free(p);
+		    return FAIL;
+		}
+		vim_free(p);
+	    }
+#ifdef FEAT_FLOAT
+	    else if (this_var->di_tv.v_type == VAR_FLOAT
+		    && var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION)
+	    {
+		float_T f = this_var->di_tv.vval.v_float;
+		int sign = ' ';
+
+		if (f < 0)
+		{
+		    f = -f;
+		    sign = '-';
+		}
+		if ((fprintf(fd, "let %s = %c%f",
+					       this_var->di_key, sign, f) < 0)
+			|| put_eol(fd) == FAIL)
+		    return FAIL;
+	    }
+#endif
+	}
+    }
+    return OK;
+}
+#endif
+
+/*
+ * Write openfile commands for the current buffers to an .exrc file.
+ * Return FAIL on error, OK otherwise.
+ */
+    static int
+makeopens(
+    FILE	*fd,
+    char_u	*dirnow)	// Current directory name
+{
+    buf_T	*buf;
+    int		only_save_windows = TRUE;
+    int		nr;
+    int		restore_size = TRUE;
+    win_T	*wp;
+    char_u	*sname;
+    win_T	*edited_win = NULL;
+    int		tabnr;
+    int		restore_stal = FALSE;
+    win_T	*tab_firstwin;
+    frame_T	*tab_topframe;
+    int		cur_arg_idx = 0;
+    int		next_arg_idx = 0;
+
+    if (ssop_flags & SSOP_BUFFERS)
+	only_save_windows = FALSE;		// Save ALL buffers
+
+    // Begin by setting the this_session variable, and then other
+    // sessionable variables.
+#ifdef FEAT_EVAL
+    if (put_line(fd, "let v:this_session=expand(\"<sfile>:p\")") == FAIL)
+	return FAIL;
+    if (ssop_flags & SSOP_GLOBALS)
+	if (store_session_globals(fd) == FAIL)
+	    return FAIL;
+#endif
+
+    // Close all windows and tabs but one.
+    if (put_line(fd, "silent only") == FAIL)
+	return FAIL;
+    if ((ssop_flags & SSOP_TABPAGES)
+	    && put_line(fd, "silent tabonly") == FAIL)
+	return FAIL;
+
+    // Now a :cd command to the session directory or the current directory
+    if (ssop_flags & SSOP_SESDIR)
+    {
+	if (put_line(fd, "exe \"cd \" . escape(expand(\"<sfile>:p:h\"), ' ')")
+								      == FAIL)
+	    return FAIL;
+    }
+    else if (ssop_flags & SSOP_CURDIR)
+    {
+	sname = home_replace_save(NULL, globaldir != NULL ? globaldir : dirnow);
+	if (sname == NULL
+		|| fputs("cd ", fd) < 0
+		|| ses_put_fname(fd, sname, &ssop_flags) == FAIL
+		|| put_eol(fd) == FAIL)
+	{
+	    vim_free(sname);
+	    return FAIL;
+	}
+	vim_free(sname);
+    }
+
+    // If there is an empty, unnamed buffer we will wipe it out later.
+    // Remember the buffer number.
+    if (put_line(fd, "if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''") == FAIL)
+	return FAIL;
+    if (put_line(fd, "  let s:wipebuf = bufnr('%')") == FAIL)
+	return FAIL;
+    if (put_line(fd, "endif") == FAIL)
+	return FAIL;
+
+    // Now save the current files, current buffer first.
+    if (put_line(fd, "set shortmess=aoO") == FAIL)
+	return FAIL;
+
+    // the global argument list
+    if (ses_arglist(fd, "argglobal", &global_alist.al_ga,
+			    !(ssop_flags & SSOP_CURDIR), &ssop_flags) == FAIL)
+	return FAIL;
+
+    if (ssop_flags & SSOP_RESIZE)
+    {
+	// Note: after the restore we still check it worked!
+	if (fprintf(fd, "set lines=%ld columns=%ld" , Rows, Columns) < 0
+		|| put_eol(fd) == FAIL)
+	    return FAIL;
+    }
+
+#ifdef FEAT_GUI
+    if (gui.in_use && (ssop_flags & SSOP_WINPOS))
+    {
+	int	x, y;
+
+	if (gui_mch_get_winpos(&x, &y) == OK)
+	{
+	    // Note: after the restore we still check it worked!
+	    if (fprintf(fd, "winpos %d %d", x, y) < 0 || put_eol(fd) == FAIL)
+		return FAIL;
+	}
+    }
+#endif
+
+    // When there are two or more tabpages and 'showtabline' is 1 the tabline
+    // will be displayed when creating the next tab.  That resizes the windows
+    // in the first tab, which may cause problems.  Set 'showtabline' to 2
+    // temporarily to avoid that.
+    if (p_stal == 1 && first_tabpage->tp_next != NULL)
+    {
+	if (put_line(fd, "set stal=2") == FAIL)
+	    return FAIL;
+	restore_stal = TRUE;
+    }
+
+    // May repeat putting Windows for each tab, when "tabpages" is in
+    // 'sessionoptions'.
+    // Don't use goto_tabpage(), it may change directory and trigger
+    // autocommands.
+    tab_firstwin = firstwin;	// first window in tab page "tabnr"
+    tab_topframe = topframe;
+    if ((ssop_flags & SSOP_TABPAGES))
+    {
+	tabpage_T *tp;
+
+	// Similar to ses_win_rec() below, populate the tab pages first so
+	// later local options won't be copied to the new tabs.
+	FOR_ALL_TABPAGES(tp)
+	    if (tp->tp_next != NULL && put_line(fd, "tabnew") == FAIL)
+		return FAIL;
+	if (first_tabpage->tp_next != NULL && put_line(fd, "tabrewind") == FAIL)
+	    return FAIL;
+    }
+    for (tabnr = 1; ; ++tabnr)
+    {
+	tabpage_T *tp = NULL;
+	int	need_tabnext = FALSE;
+	int	cnr = 1;
+
+	if ((ssop_flags & SSOP_TABPAGES))
+	{
+	    tp = find_tabpage(tabnr);
+
+	    if (tp == NULL)
+		break;		// done all tab pages
+	    if (tp == curtab)
+	    {
+		tab_firstwin = firstwin;
+		tab_topframe = topframe;
+	    }
+	    else
+	    {
+		tab_firstwin = tp->tp_firstwin;
+		tab_topframe = tp->tp_topframe;
+	    }
+	    if (tabnr > 1)
+		need_tabnext = TRUE;
+	}
+
+	// Before creating the window layout, try loading one file.  If this
+	// is aborted we don't end up with a number of useless windows.
+	// This may have side effects! (e.g., compressed or network file).
+	for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
+	{
+	    if (ses_do_win(wp)
+		    && wp->w_buffer->b_ffname != NULL
+		    && !bt_help(wp->w_buffer)
+#ifdef FEAT_QUICKFIX
+		    && !bt_nofilename(wp->w_buffer)
+#endif
+		    )
+	    {
+		if (need_tabnext && put_line(fd, "tabnext") == FAIL)
+		    return FAIL;
+		need_tabnext = FALSE;
+
+		if (fputs("edit ", fd) < 0
+			      || ses_fname(fd, wp->w_buffer, &ssop_flags, TRUE)
+								       == FAIL)
+		    return FAIL;
+		if (!wp->w_arg_idx_invalid)
+		    edited_win = wp;
+		break;
+	    }
+	}
+
+	// If no file got edited create an empty tab page.
+	if (need_tabnext && put_line(fd, "tabnext") == FAIL)
+	    return FAIL;
+
+	// Save current window layout.
+	if (put_line(fd, "set splitbelow splitright") == FAIL)
+	    return FAIL;
+	if (ses_win_rec(fd, tab_topframe) == FAIL)
+	    return FAIL;
+	if (!p_sb && put_line(fd, "set nosplitbelow") == FAIL)
+	    return FAIL;
+	if (!p_spr && put_line(fd, "set nosplitright") == FAIL)
+	    return FAIL;
+
+	// Check if window sizes can be restored (no windows omitted).
+	// Remember the window number of the current window after restoring.
+	nr = 0;
+	for (wp = tab_firstwin; wp != NULL; wp = W_NEXT(wp))
+	{
+	    if (ses_do_win(wp))
+		++nr;
+	    else
+		restore_size = FALSE;
+	    if (curwin == wp)
+		cnr = nr;
+	}
+
+	// Go to the first window.
+	if (put_line(fd, "wincmd t") == FAIL)
+	    return FAIL;
+
+	// If more than one window, see if sizes can be restored.
+	// First set 'winheight' and 'winwidth' to 1 to avoid the windows being
+	// resized when moving between windows.
+	// Do this before restoring the view, so that the topline and the
+	// cursor can be set.  This is done again below.
+	// winminheight and winminwidth need to be set to avoid an error if the
+	// user has set winheight or winwidth.
+	if (put_line(fd, "set winminheight=0") == FAIL
+		|| put_line(fd, "set winheight=1") == FAIL
+		|| put_line(fd, "set winminwidth=0") == FAIL
+		|| put_line(fd, "set winwidth=1") == FAIL)
+	    return FAIL;
+	if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
+	    return FAIL;
+
+	// Restore the tab-local working directory if specified
+	// Do this before the windows, so that the window-local directory can
+	// override the tab-local directory.
+	if (tp != NULL && tp->tp_localdir != NULL && ssop_flags & SSOP_CURDIR)
+	{
+	    if (fputs("tcd ", fd) < 0
+		    || ses_put_fname(fd, tp->tp_localdir, &ssop_flags) == FAIL
+		    || put_eol(fd) == FAIL)
+		return FAIL;
+	    did_lcd = TRUE;
+	}
+
+	// Restore the view of the window (options, file, cursor, etc.).
+	for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
+	{
+	    if (!ses_do_win(wp))
+		continue;
+	    if (put_view(fd, wp, wp != edited_win, &ssop_flags,
+							 cur_arg_idx) == FAIL)
+		return FAIL;
+	    if (nr > 1 && put_line(fd, "wincmd w") == FAIL)
+		return FAIL;
+	    next_arg_idx = wp->w_arg_idx;
+	}
+
+	// The argument index in the first tab page is zero, need to set it in
+	// each window.  For further tab pages it's the window where we do
+	// "tabedit".
+	cur_arg_idx = next_arg_idx;
+
+	// Restore cursor to the current window if it's not the first one.
+	if (cnr > 1 && (fprintf(fd, "%dwincmd w", cnr) < 0
+						      || put_eol(fd) == FAIL))
+	    return FAIL;
+
+	// Restore window sizes again after jumping around in windows, because
+	// the current window has a minimum size while others may not.
+	if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
+	    return FAIL;
+
+	// Don't continue in another tab page when doing only the current one
+	// or when at the last tab page.
+	if (!(ssop_flags & SSOP_TABPAGES))
+	    break;
+    }
+
+    if (ssop_flags & SSOP_TABPAGES)
+    {
+	if (fprintf(fd, "tabnext %d", tabpage_index(curtab)) < 0
+		|| put_eol(fd) == FAIL)
+	    return FAIL;
+    }
+    if (restore_stal && put_line(fd, "set stal=1") == FAIL)
+	return FAIL;
+
+    // Now put the remaining buffers into the buffer list.
+    // This is near the end, so that when 'hidden' is set we don't create extra
+    // buffers.  If the buffer was already created with another command the
+    // ":badd" will have no effect.
+    FOR_ALL_BUFFERS(buf)
+    {
+	if (!(only_save_windows && buf->b_nwindows == 0)
+		&& !(buf->b_help && !(ssop_flags & SSOP_HELP))
+#ifdef FEAT_TERMINAL
+		// Skip terminal buffers: finished ones are not useful, others
+		// will be resurrected and result in a new buffer.
+		&& !bt_terminal(buf)
+#endif
+		&& buf->b_fname != NULL
+		&& buf->b_p_bl)
+	{
+	    if (fprintf(fd, "badd +%ld ", buf->b_wininfo == NULL ? 1L
+					   : buf->b_wininfo->wi_fpos.lnum) < 0
+		    || ses_fname(fd, buf, &ssop_flags, TRUE) == FAIL)
+		return FAIL;
+	}
+    }
+
+    // Wipe out an empty unnamed buffer we started in.
+    if (put_line(fd, "if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0")
+								       == FAIL)
+	return FAIL;
+    if (put_line(fd, "  silent exe 'bwipe ' . s:wipebuf") == FAIL)
+	return FAIL;
+    if (put_line(fd, "endif") == FAIL)
+	return FAIL;
+    if (put_line(fd, "unlet! s:wipebuf") == FAIL)
+	return FAIL;
+
+    // Re-apply 'winheight', 'winwidth' and 'shortmess'.
+    if (fprintf(fd, "set winheight=%ld winwidth=%ld shortmess=%s",
+			       p_wh, p_wiw, p_shm) < 0 || put_eol(fd) == FAIL)
+	return FAIL;
+    // Re-apply 'winminheight' and 'winminwidth'.
+    if (fprintf(fd, "set winminheight=%ld winminwidth=%ld",
+				      p_wmh, p_wmw) < 0 || put_eol(fd) == FAIL)
+	return FAIL;
+
+    // Lastly, execute the x.vim file if it exists.
+    if (put_line(fd, "let s:sx = expand(\"<sfile>:p:r\").\"x.vim\"") == FAIL
+	    || put_line(fd, "if file_readable(s:sx)") == FAIL
+	    || put_line(fd, "  exe \"source \" . fnameescape(s:sx)") == FAIL
+	    || put_line(fd, "endif") == FAIL)
+	return FAIL;
+
+    return OK;
+}
+
+/*
+ * Get the name of the view file for the current buffer.
+ */
+    static char_u *
+get_view_file(int c)
+{
+    int		len = 0;
+    char_u	*p, *s;
+    char_u	*retval;
+    char_u	*sname;
+
+    if (curbuf->b_ffname == NULL)
+    {
+	emsg(_(e_noname));
+	return NULL;
+    }
+    sname = home_replace_save(NULL, curbuf->b_ffname);
+    if (sname == NULL)
+	return NULL;
+
+    // We want a file name without separators, because we're not going to make
+    // a directory.
+    // "normal" path separator	-> "=+"
+    // "="			-> "=="
+    // ":" path separator	-> "=-"
+    for (p = sname; *p; ++p)
+	if (*p == '=' || vim_ispathsep(*p))
+	    ++len;
+    retval = alloc(STRLEN(sname) + len + STRLEN(p_vdir) + 9);
+    if (retval != NULL)
+    {
+	STRCPY(retval, p_vdir);
+	add_pathsep(retval);
+	s = retval + STRLEN(retval);
+	for (p = sname; *p; ++p)
+	{
+	    if (*p == '=')
+	    {
+		*s++ = '=';
+		*s++ = '=';
+	    }
+	    else if (vim_ispathsep(*p))
+	    {
+		*s++ = '=';
+#if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) || defined(VMS)
+		if (*p == ':')
+		    *s++ = '-';
+		else
+#endif
+		    *s++ = '+';
+	    }
+	    else
+		*s++ = *p;
+	}
+	*s++ = '=';
+	*s++ = c;
+	STRCPY(s, ".vim");
+    }
+
+    vim_free(sname);
+    return retval;
+}
+
+/*
+ * ":loadview [nr]"
+ */
+    void
+ex_loadview(exarg_T *eap)
+{
+    char_u	*fname;
+
+    fname = get_view_file(*eap->arg);
+    if (fname != NULL)
+    {
+	do_source(fname, FALSE, DOSO_NONE);
+	vim_free(fname);
+    }
+}
+
+#if defined(FEAT_GUI) || defined(PROTO)
+/*
+ * Generate a script that can be used to restore the current editing session.
+ * Save the value of v:this_session before running :mksession in order to make
+ * automagic session save fully transparent.  Return TRUE on success.
+ */
+    int
+write_session_file(char_u *filename)
+{
+    char_u	    *escaped_filename;
+    char	    *mksession_cmdline;
+    unsigned int    save_ssop_flags;
+    int		    failed;
+
+    // Build an ex command line to create a script that restores the current
+    // session if executed.  Escape the filename to avoid nasty surprises.
+    escaped_filename = vim_strsave_escaped(filename, escape_chars);
+    if (escaped_filename == NULL)
+	return FALSE;
+    mksession_cmdline = alloc(10 + (int)STRLEN(escaped_filename) + 1);
+    if (mksession_cmdline == NULL)
+    {
+	vim_free(escaped_filename);
+	return FALSE;
+    }
+    strcpy(mksession_cmdline, "mksession ");
+    STRCAT(mksession_cmdline, escaped_filename);
+    vim_free(escaped_filename);
+
+    // Use a reasonable hardcoded set of 'sessionoptions' flags to avoid
+    // unpredictable effects when the session is saved automatically.  Also,
+    // we definitely need SSOP_GLOBALS to be able to restore v:this_session.
+    // Don't use SSOP_BUFFERS to prevent the buffer list from becoming
+    // enormously large if the GNOME session feature is used regularly.
+    save_ssop_flags = ssop_flags;
+    ssop_flags = (SSOP_BLANK|SSOP_CURDIR|SSOP_FOLDS|SSOP_GLOBALS
+		  |SSOP_HELP|SSOP_OPTIONS|SSOP_WINSIZE|SSOP_TABPAGES);
+
+    do_cmdline_cmd((char_u *)"let Save_VV_this_session = v:this_session");
+    failed = (do_cmdline_cmd((char_u *)mksession_cmdline) == FAIL);
+    do_cmdline_cmd((char_u *)"let v:this_session = Save_VV_this_session");
+    do_unlet((char_u *)"Save_VV_this_session", TRUE);
+
+    ssop_flags = save_ssop_flags;
+    vim_free(mksession_cmdline);
+
+    // Reopen the file and append a command to restore v:this_session,
+    // as if this save never happened.	This is to avoid conflicts with
+    // the user's own sessions.  FIXME: It's probably less hackish to add
+    // a "stealth" flag to 'sessionoptions' -- gotta ask Bram.
+    if (!failed)
+    {
+	FILE *fd;
+
+	fd = open_exfile(filename, TRUE, APPENDBIN);
+
+	failed = (fd == NULL
+	       || put_line(fd, "let v:this_session = Save_VV_this_session")
+									== FAIL
+	       || put_line(fd, "unlet Save_VV_this_session") == FAIL);
+
+	if (fd != NULL && fclose(fd) != 0)
+	    failed = TRUE;
+
+	if (failed)
+	    mch_remove(filename);
+    }
+
+    return !failed;
+}
+# endif
+
+#endif // FEAT_SESSION
+
+#if defined(FEAT_SESSION) && defined(USE_CRNL)
+# define MKSESSION_NL
+static int mksession_nl = FALSE;    // use NL only in put_eol()
+#endif
+
+#if defined(FEAT_SESSION) || defined(PROTO)
+/*
+ * ":mkexrc", ":mkvimrc", ":mkview" and ":mksession".
+ */
+    void
+ex_mkrc(exarg_T	*eap)
+{
+    FILE	*fd;
+    int		failed = FALSE;
+    char_u	*fname;
+#ifdef FEAT_BROWSE
+    char_u	*browseFile = NULL;
+#endif
+#ifdef FEAT_SESSION
+    int		view_session = FALSE;
+    int		using_vdir = FALSE;	// using 'viewdir'?
+    char_u	*viewFile = NULL;
+    unsigned	*flagp;
+#endif
+
+    if (eap->cmdidx == CMD_mksession || eap->cmdidx == CMD_mkview)
+    {
+#ifdef FEAT_SESSION
+	view_session = TRUE;
+#else
+	ex_ni(eap);
+	return;
+#endif
+    }
+
+#ifdef FEAT_SESSION
+    // Use the short file name until ":lcd" is used.  We also don't use the
+    // short file name when 'acd' is set, that is checked later.
+    did_lcd = FALSE;
+
+    // ":mkview" or ":mkview 9": generate file name with 'viewdir'
+    if (eap->cmdidx == CMD_mkview
+	    && (*eap->arg == NUL
+		|| (vim_isdigit(*eap->arg) && eap->arg[1] == NUL)))
+    {
+	eap->forceit = TRUE;
+	fname = get_view_file(*eap->arg);
+	if (fname == NULL)
+	    return;
+	viewFile = fname;
+	using_vdir = TRUE;
+    }
+    else
+#endif
+	if (*eap->arg != NUL)
+	fname = eap->arg;
+    else if (eap->cmdidx == CMD_mkvimrc)
+	fname = (char_u *)VIMRC_FILE;
+#ifdef FEAT_SESSION
+    else if (eap->cmdidx == CMD_mksession)
+	fname = (char_u *)SESSION_FILE;
+#endif
+    else
+	fname = (char_u *)EXRC_FILE;
+
+#ifdef FEAT_BROWSE
+    if (cmdmod.browse)
+    {
+	browseFile = do_browse(BROWSE_SAVE,
+# ifdef FEAT_SESSION
+		eap->cmdidx == CMD_mkview ? (char_u *)_("Save View") :
+		eap->cmdidx == CMD_mksession ? (char_u *)_("Save Session") :
+# endif
+		(char_u *)_("Save Setup"),
+		fname, (char_u *)"vim", NULL,
+		(char_u *)_(BROWSE_FILTER_MACROS), NULL);
+	if (browseFile == NULL)
+	    goto theend;
+	fname = browseFile;
+	eap->forceit = TRUE;	// since dialog already asked
+    }
+#endif
+
+#if defined(FEAT_SESSION) && defined(vim_mkdir)
+    // When using 'viewdir' may have to create the directory.
+    if (using_vdir && !mch_isdir(p_vdir))
+	vim_mkdir_emsg(p_vdir, 0755);
+#endif
+
+    fd = open_exfile(fname, eap->forceit, WRITEBIN);
+    if (fd != NULL)
+    {
+#ifdef FEAT_SESSION
+	if (eap->cmdidx == CMD_mkview)
+	    flagp = &vop_flags;
+	else
+	    flagp = &ssop_flags;
+#endif
+
+#ifdef MKSESSION_NL
+	// "unix" in 'sessionoptions': use NL line separator
+	if (view_session && (*flagp & SSOP_UNIX))
+	    mksession_nl = TRUE;
+#endif
+
+	// Write the version command for :mkvimrc
+	if (eap->cmdidx == CMD_mkvimrc)
+	    (void)put_line(fd, "version 6.0");
+
+#ifdef FEAT_SESSION
+	if (eap->cmdidx == CMD_mksession)
+	{
+	    if (put_line(fd, "let SessionLoad = 1") == FAIL)
+		failed = TRUE;
+	}
+
+	if (eap->cmdidx != CMD_mkview)
+#endif
+	{
+	    // Write setting 'compatible' first, because it has side effects.
+	    // For that same reason only do it when needed.
+	    if (p_cp)
+		(void)put_line(fd, "if !&cp | set cp | endif");
+	    else
+		(void)put_line(fd, "if &cp | set nocp | endif");
+	}
+
+#ifdef FEAT_SESSION
+	if (!view_session
+		|| (eap->cmdidx == CMD_mksession
+		    && (*flagp & SSOP_OPTIONS)))
+#endif
+	    failed |= (makemap(fd, NULL) == FAIL
+				   || makeset(fd, OPT_GLOBAL, FALSE) == FAIL);
+
+#ifdef FEAT_SESSION
+	if (!failed && view_session)
+	{
+	    if (put_line(fd, "let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0") == FAIL)
+		failed = TRUE;
+	    if (eap->cmdidx == CMD_mksession)
+	    {
+		char_u *dirnow;	 // current directory
+
+		dirnow = alloc(MAXPATHL);
+		if (dirnow == NULL)
+		    failed = TRUE;
+		else
+		{
+		    // Change to session file's dir.
+		    if (mch_dirname(dirnow, MAXPATHL) == FAIL
+					    || mch_chdir((char *)dirnow) != 0)
+			*dirnow = NUL;
+		    if (*dirnow != NUL && (ssop_flags & SSOP_SESDIR))
+		    {
+			if (vim_chdirfile(fname, NULL) == OK)
+			    shorten_fnames(TRUE);
+		    }
+		    else if (*dirnow != NUL
+			   && (ssop_flags & SSOP_CURDIR) && globaldir != NULL)
+		    {
+			if (mch_chdir((char *)globaldir) == 0)
+			    shorten_fnames(TRUE);
+		    }
+
+		    failed |= (makeopens(fd, dirnow) == FAIL);
+
+		    // restore original dir
+		    if (*dirnow != NUL && ((ssop_flags & SSOP_SESDIR)
+			|| ((ssop_flags & SSOP_CURDIR) && globaldir != NULL)))
+		    {
+			if (mch_chdir((char *)dirnow) != 0)
+			    emsg(_(e_prev_dir));
+			shorten_fnames(TRUE);
+		    }
+		    vim_free(dirnow);
+		}
+	    }
+	    else
+	    {
+		failed |= (put_view(fd, curwin, !using_vdir, flagp,
+								 -1) == FAIL);
+	    }
+	    if (put_line(fd, "let &so = s:so_save | let &siso = s:siso_save")
+								      == FAIL)
+		failed = TRUE;
+# ifdef FEAT_SEARCH_EXTRA
+	    if (no_hlsearch && put_line(fd, "nohlsearch") == FAIL)
+		failed = TRUE;
+# endif
+	    if (put_line(fd, "doautoall SessionLoadPost") == FAIL)
+		failed = TRUE;
+	    if (eap->cmdidx == CMD_mksession)
+	    {
+		if (put_line(fd, "unlet SessionLoad") == FAIL)
+		    failed = TRUE;
+	    }
+	}
+#endif
+	if (put_line(fd, "\" vim: set ft=vim :") == FAIL)
+	    failed = TRUE;
+
+	failed |= fclose(fd);
+
+	if (failed)
+	    emsg(_(e_write));
+#if defined(FEAT_EVAL) && defined(FEAT_SESSION)
+	else if (eap->cmdidx == CMD_mksession)
+	{
+	    // successful session write - set this_session var
+	    char_u	*tbuf;
+
+	    tbuf = alloc(MAXPATHL);
+	    if (tbuf != NULL)
+	    {
+		if (vim_FullName(fname, tbuf, MAXPATHL, FALSE) == OK)
+		    set_vim_var_string(VV_THIS_SESSION, tbuf, -1);
+		vim_free(tbuf);
+	    }
+	}
+#endif
+#ifdef MKSESSION_NL
+	mksession_nl = FALSE;
+#endif
+    }
+
+#ifdef FEAT_BROWSE
+theend:
+    vim_free(browseFile);
+#endif
+#ifdef FEAT_SESSION
+    vim_free(viewFile);
+#endif
+}
+
+#endif // FEAT_SESSION
+
+#if defined(FEAT_VIMINFO) || defined(FEAT_SESSION)
+    var_flavour_T
+var_flavour(char_u *varname)
+{
+    char_u *p = varname;
+
+    if (ASCII_ISUPPER(*p))
+    {
+	while (*(++p))
+	    if (ASCII_ISLOWER(*p))
+		return VAR_FLAVOUR_SESSION;
+	return VAR_FLAVOUR_VIMINFO;
+    }
+    else
+	return VAR_FLAVOUR_DEFAULT;
+}
+#endif
+
+/*
+ * Write end-of-line character(s) for ":mkexrc", ":mkvimrc" and ":mksession".
+ * Return FAIL for a write error.
+ */
+    int
+put_eol(FILE *fd)
+{
+    if (
+#ifdef USE_CRNL
+	    (
+# ifdef MKSESSION_NL
+	     !mksession_nl &&
+# endif
+	     (putc('\r', fd) < 0)) ||
+#endif
+	    (putc('\n', fd) < 0))
+	return FAIL;
+    return OK;
+}
+
+/*
+ * Write a line to "fd".
+ * Return FAIL for a write error.
+ */
+    int
+put_line(FILE *fd, char *s)
+{
+    if (fputs(s, fd) < 0 || put_eol(fd) == FAIL)
+	return FAIL;
+    return OK;
+}