new file mode 100644
--- /dev/null
+++ b/src/buffer.c
@@ -0,0 +1,5071 @@
+/* vi:set ts=8 sts=4 sw=4:
+ *
+ * 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.
+ */
+
+/*
+ * buffer.c: functions for dealing with the buffer structure
+ */
+
+/*
+ * The buffer list is a double linked list of all buffers.
+ * Each buffer can be in one of these states:
+ * never loaded: BF_NEVERLOADED is set, only the file name is valid
+ *   not loaded: b_ml.ml_mfp == NULL, no memfile allocated
+ *	 hidden: b_nwindows == 0, loaded but not displayed in a window
+ *	 normal: loaded and displayed in a window
+ *
+ * Instead of storing file names all over the place, each file name is
+ * stored in the buffer list. It can be referenced by a number.
+ *
+ * The current implementation remembers all file names ever used.
+ */
+
+
+#include "vim.h"
+
+#if defined(FEAT_CMDL_COMPL) || defined(FEAT_LISTCMDS) || defined(FEAT_EVAL) || defined(FEAT_PERL)
+static char_u	*buflist_match __ARGS((regprog_T *prog, buf_T *buf));
+# define HAVE_BUFLIST_MATCH
+static char_u	*fname_match __ARGS((regprog_T *prog, char_u *name));
+#endif
+static void	buflist_setfpos __ARGS((buf_T *buf, win_T *win, linenr_T lnum, colnr_T col, int copy_options));
+static wininfo_T *find_wininfo __ARGS((buf_T *buf));
+#ifdef UNIX
+static buf_T	*buflist_findname_stat __ARGS((char_u *ffname, struct stat *st));
+static int	otherfile_buf __ARGS((buf_T *buf, char_u *ffname, struct stat *stp));
+static int	buf_same_ino __ARGS((buf_T *buf, struct stat *stp));
+#else
+static int	otherfile_buf __ARGS((buf_T *buf, char_u *ffname));
+#endif
+#ifdef FEAT_TITLE
+static int	ti_change __ARGS((char_u *str, char_u **last));
+#endif
+static void	free_buffer __ARGS((buf_T *));
+static void	free_buffer_stuff __ARGS((buf_T *buf, int free_options));
+static void	clear_wininfo __ARGS((buf_T *buf));
+
+#ifdef UNIX
+# define dev_T dev_t
+#else
+# define dev_T unsigned
+#endif
+
+#if defined(FEAT_SIGNS)
+static void insert_sign __ARGS((buf_T *buf, signlist_T *prev, signlist_T *next, int id, linenr_T lnum, int typenr));
+static void buf_delete_signs __ARGS((buf_T *buf));
+#endif
+
+/*
+ * Open current buffer, that is: open the memfile and read the file into memory
+ * return FAIL for failure, OK otherwise
+ */
+    int
+open_buffer(read_stdin, eap)
+    int		read_stdin;	    /* read file from stdin */
+    exarg_T	*eap;		    /* for forced 'ff' and 'fenc' or NULL */
+{
+    int		retval = OK;
+#ifdef FEAT_AUTOCMD
+    buf_T	*old_curbuf;
+#endif
+
+    /*
+     * The 'readonly' flag is only set when BF_NEVERLOADED is being reset.
+     * When re-entering the same buffer, it should not change, because the
+     * user may have reset the flag by hand.
+     */
+    if (readonlymode && curbuf->b_ffname != NULL
+					&& (curbuf->b_flags & BF_NEVERLOADED))
+	curbuf->b_p_ro = TRUE;
+
+    if (ml_open() == FAIL)
+    {
+	/*
+	 * There MUST be a memfile, otherwise we can't do anything
+	 * If we can't create one for the current buffer, take another buffer
+	 */
+	close_buffer(NULL, curbuf, 0);
+	for (curbuf = firstbuf; curbuf != NULL; curbuf = curbuf->b_next)
+	    if (curbuf->b_ml.ml_mfp != NULL)
+		break;
+	/*
+	 * if there is no memfile at all, exit
+	 * This is OK, since there are no changes to loose.
+	 */
+	if (curbuf == NULL)
+	{
+	    EMSG(_("E82: Cannot allocate any buffer, exiting..."));
+	    getout(2);
+	}
+	EMSG(_("E83: Cannot allocate buffer, using other one..."));
+	enter_buffer(curbuf);
+	return FAIL;
+    }
+
+#ifdef FEAT_AUTOCMD
+    /* The autocommands in readfile() may change the buffer, but only AFTER
+     * reading the file. */
+    old_curbuf = curbuf;
+    modified_was_set = FALSE;
+#endif
+
+    /* mark cursor position as being invalid */
+    changed_line_abv_curs();
+
+    if (curbuf->b_ffname != NULL
+#ifdef FEAT_NETBEANS_INTG
+	    && netbeansReadFile
+#endif
+       )
+    {
+#ifdef FEAT_NETBEANS_INTG
+	int oldFire = netbeansFireChanges;
+
+	netbeansFireChanges = 0;
+#endif
+	retval = readfile(curbuf->b_ffname, curbuf->b_fname,
+		  (linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM, eap, READ_NEW);
+#ifdef FEAT_NETBEANS_INTG
+	netbeansFireChanges = oldFire;
+#endif
+	/* Help buffer is filtered. */
+	if (curbuf->b_help)
+	    fix_help_buffer();
+    }
+    else if (read_stdin)
+    {
+	int		save_bin = curbuf->b_p_bin;
+	linenr_T	line_count;
+
+	/*
+	 * First read the text in binary mode into the buffer.
+	 * Then read from that same buffer and append at the end.  This makes
+	 * it possible to retry when 'fileformat' or 'fileencoding' was
+	 * guessed wrong.
+	 */
+	curbuf->b_p_bin = TRUE;
+	retval = readfile(NULL, NULL, (linenr_T)0,
+		  (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW + READ_STDIN);
+	curbuf->b_p_bin = save_bin;
+	if (retval == OK)
+	{
+	    line_count = curbuf->b_ml.ml_line_count;
+	    retval = readfile(NULL, NULL, (linenr_T)line_count,
+			    (linenr_T)0, (linenr_T)MAXLNUM, eap, READ_BUFFER);
+	    if (retval == OK)
+	    {
+		/* Delete the binary lines. */
+		while (--line_count >= 0)
+		    ml_delete((linenr_T)1, FALSE);
+	    }
+	    else
+	    {
+		/* Delete the converted lines. */
+		while (curbuf->b_ml.ml_line_count > line_count)
+		    ml_delete(line_count, FALSE);
+	    }
+	    /* Put the cursor on the first line. */
+	    curwin->w_cursor.lnum = 1;
+	    curwin->w_cursor.col = 0;
+#ifdef FEAT_AUTOCMD
+# ifdef FEAT_EVAL
+	    apply_autocmds_retval(EVENT_STDINREADPOST, NULL, NULL, FALSE,
+							curbuf, &retval);
+# else
+	    apply_autocmds(EVENT_STDINREADPOST, NULL, NULL, FALSE, curbuf);
+# endif
+#endif
+	}
+    }
+
+    /* if first time loading this buffer, init b_chartab[] */
+    if (curbuf->b_flags & BF_NEVERLOADED)
+	(void)buf_init_chartab(curbuf, FALSE);
+
+    /*
+     * Set/reset the Changed flag first, autocmds may change the buffer.
+     * Apply the automatic commands, before processing the modelines.
+     * So the modelines have priority over auto commands.
+     */
+    /* When reading stdin, the buffer contents always needs writing, so set
+     * the changed flag.  Unless in readonly mode: "ls | gview -".
+     * When interrupted and 'cpoptions' contains 'i' set changed flag. */
+    if ((read_stdin && !readonlymode && !bufempty())
+#ifdef FEAT_AUTOCMD
+		|| modified_was_set	/* ":set modified" used in autocmd */
+# ifdef FEAT_EVAL
+		|| (aborting() && vim_strchr(p_cpo, CPO_INTMOD) != NULL)
+# endif
+#endif
+		|| (got_int && vim_strchr(p_cpo, CPO_INTMOD) != NULL))
+	changed();
+    else if (retval != FAIL)
+	unchanged(curbuf, FALSE);
+    save_file_ff(curbuf);		/* keep this fileformat */
+
+    /* require "!" to overwrite the file, because it wasn't read completely */
+#ifdef FEAT_EVAL
+    if (aborting())
+#else
+    if (got_int)
+#endif
+	curbuf->b_flags |= BF_READERR;
+
+#ifdef FEAT_AUTOCMD
+    /* need to set w_topline, unless some autocommand already did that. */
+    if (!(curwin->w_valid & VALID_TOPLINE))
+    {
+	curwin->w_topline = 1;
+# ifdef FEAT_DIFF
+	curwin->w_topfill = 0;
+# endif
+    }
+# ifdef FEAT_EVAL
+    apply_autocmds_retval(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf, &retval);
+# else
+    apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
+# endif
+#endif
+
+    if (retval != FAIL)
+    {
+#ifdef FEAT_AUTOCMD
+	/*
+	 * The autocommands may have changed the current buffer.  Apply the
+	 * modelines to the correct buffer, if it still exists and is loaded.
+	 */
+	if (buf_valid(old_curbuf) && old_curbuf->b_ml.ml_mfp != NULL)
+	{
+	    aco_save_T	aco;
+
+	    /* Go to the buffer that was opened. */
+	    aucmd_prepbuf(&aco, old_curbuf);
+#endif
+	    do_modelines();
+	    curbuf->b_flags &= ~(BF_CHECK_RO | BF_NEVERLOADED);
+
+#ifdef FEAT_AUTOCMD
+# ifdef FEAT_EVAL
+	    apply_autocmds_retval(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf,
+								    &retval);
+# else
+	    apply_autocmds(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf);
+# endif
+
+	    /* restore curwin/curbuf and a few other things */
+	    aucmd_restbuf(&aco);
+	}
+#endif
+    }
+
+#ifdef FEAT_FOLDING
+    /* Need to update automatic folding. */
+    foldUpdateAll(curwin);
+#endif
+
+    return retval;
+}
+
+/*
+ * Return TRUE if "buf" points to a valid buffer (in the buffer list).
+ */
+    int
+buf_valid(buf)
+    buf_T	*buf;
+{
+    buf_T	*bp;
+
+    for (bp = firstbuf; bp != NULL; bp = bp->b_next)
+	if (bp == buf)
+	    return TRUE;
+    return FALSE;
+}
+
+/*
+ * Close the link to a buffer.
+ * "action" is used when there is no longer a window for the buffer.
+ * It can be:
+ * 0			buffer becomes hidden
+ * DOBUF_UNLOAD		buffer is unloaded
+ * DOBUF_DELETE		buffer is unloaded and removed from buffer list
+ * DOBUF_WIPE		buffer is unloaded and really deleted
+ * When doing all but the first one on the current buffer, the caller should
+ * get a new buffer very soon!
+ *
+ * The 'bufhidden' option can force freeing and deleting.
+ */
+    void
+close_buffer(win, buf, action)
+    win_T	*win;		/* if not NULL, set b_last_cursor */
+    buf_T	*buf;
+    int		action;
+{
+#ifdef FEAT_AUTOCMD
+    int		is_curbuf;
+    int		nwindows = buf->b_nwindows;
+#endif
+    int		unload_buf = (action != 0);
+    int		del_buf = (action == DOBUF_DEL || action == DOBUF_WIPE);
+    int		wipe_buf = (action == DOBUF_WIPE);
+
+#ifdef FEAT_QUICKFIX
+    /*
+     * Force unloading or deleting when 'bufhidden' says so.
+     * The caller must take care of NOT deleting/freeing when 'bufhidden' is
+     * "hide" (otherwise we could never free or delete a buffer).
+     */
+    if (buf->b_p_bh[0] == 'd')		/* 'bufhidden' == "delete" */
+    {
+	del_buf = TRUE;
+	unload_buf = TRUE;
+    }
+    else if (buf->b_p_bh[0] == 'w')	/* 'bufhidden' == "wipe" */
+    {
+	del_buf = TRUE;
+	unload_buf = TRUE;
+	wipe_buf = TRUE;
+    }
+    else if (buf->b_p_bh[0] == 'u')	/* 'bufhidden' == "unload" */
+	unload_buf = TRUE;
+#endif
+
+    if (win != NULL)
+    {
+	/* Set b_last_cursor when closing the last window for the buffer.
+	 * Remember the last cursor position and window options of the buffer.
+	 * This used to be only for the current window, but then options like
+	 * 'foldmethod' may be lost with a ":only" command. */
+	if (buf->b_nwindows == 1)
+	    set_last_cursor(win);
+	buflist_setfpos(buf, win,
+		    win->w_cursor.lnum == 1 ? 0 : win->w_cursor.lnum,
+		    win->w_cursor.col, TRUE);
+    }
+
+#ifdef FEAT_AUTOCMD
+    /* When the buffer is no longer in a window, trigger BufWinLeave */
+    if (buf->b_nwindows == 1)
+    {
+	apply_autocmds(EVENT_BUFWINLEAVE, buf->b_fname, buf->b_fname,
+								  FALSE, buf);
+	if (!buf_valid(buf))	    /* autocommands may delete the buffer */
+	    return;
+
+	/* When the buffer becomes hidden, but is not unloaded, trigger
+	 * BufHidden */
+	if (!unload_buf)
+	{
+	    apply_autocmds(EVENT_BUFHIDDEN, buf->b_fname, buf->b_fname,
+								  FALSE, buf);
+	    if (!buf_valid(buf))	/* autocmds may delete the buffer */
+		return;
+	}
+# ifdef FEAT_EVAL
+	if (aborting())	    /* autocmds may abort script processing */
+	    return;
+# endif
+    }
+    nwindows = buf->b_nwindows;
+#endif
+
+    /* decrease the link count from windows (unless not in any window) */
+    if (buf->b_nwindows > 0)
+	--buf->b_nwindows;
+
+    /* Return when a window is displaying the buffer or when it's not
+     * unloaded. */
+    if (buf->b_nwindows > 0 || !unload_buf)
+    {
+	if (buf == curbuf)
+	    u_sync();	    /* sync undo before going to another buffer */
+	return;
+    }
+
+    /* Always remove the buffer when there is no file name. */
+    if (buf->b_ffname == NULL)
+	del_buf = TRUE;
+
+    /*
+     * Free all things allocated for this buffer.
+     * Also calls the "BufDelete" autocommands when del_buf is TRUE.
+     */
+#ifdef FEAT_AUTOCMD
+    /* Remember if we are closing the current buffer.  Restore the number of
+     * windows, so that autocommands in buf_freeall() don't get confused. */
+    is_curbuf = (buf == curbuf);
+    buf->b_nwindows = nwindows;
+#endif
+
+    buf_freeall(buf, del_buf, wipe_buf);
+
+#ifdef FEAT_AUTOCMD
+    /* Autocommands may have deleted the buffer. */
+    if (!buf_valid(buf))
+	return;
+# ifdef FEAT_EVAL
+    /* Autocommands may abort script processing. */
+    if (aborting())
+	return;
+# endif
+
+    /* Autocommands may have opened or closed windows for this buffer.
+     * Decrement the count for the close we do here. */
+    if (buf->b_nwindows > 0)
+	--buf->b_nwindows;
+
+    /*
+     * It's possible that autocommands change curbuf to the one being deleted.
+     * This might cause the previous curbuf to be deleted unexpectedly.  But
+     * in some cases it's OK to delete the curbuf, because a new one is
+     * obtained anyway.  Therefore only return if curbuf changed to the
+     * deleted buffer.
+     */
+    if (buf == curbuf && !is_curbuf)
+	return;
+#endif
+
+#ifdef FEAT_NETBEANS_INTG
+    if (usingNetbeans)
+	netbeans_file_closed(buf);
+#endif
+#if defined(FEAT_NETBEANS_INTG) || defined(FEAT_SUN_WORKSHOP)
+    /* Change directories when the acd option is set on. */
+    if (p_acd && curbuf->b_ffname != NULL
+				     && vim_chdirfile(curbuf->b_ffname) == OK)
+	shorten_fnames(TRUE);
+#endif
+
+    /*
+     * Remove the buffer from the list.
+     */
+    if (wipe_buf)
+    {
+#ifdef FEAT_SUN_WORKSHOP
+	if (usingSunWorkShop)
+	    workshop_file_closed_lineno((char *)buf->b_ffname,
+			(int)buf->b_last_cursor.lnum);
+#endif
+	vim_free(buf->b_ffname);
+	vim_free(buf->b_sfname);
+	if (buf->b_prev == NULL)
+	    firstbuf = buf->b_next;
+	else
+	    buf->b_prev->b_next = buf->b_next;
+	if (buf->b_next == NULL)
+	    lastbuf = buf->b_prev;
+	else
+	    buf->b_next->b_prev = buf->b_prev;
+	free_buffer(buf);
+    }
+    else
+    {
+	if (del_buf)
+	{
+	    /* Free all internal variables and reset option values, to make
+	     * ":bdel" compatible with Vim 5.7. */
+	    free_buffer_stuff(buf, TRUE);
+
+	    /* Make it look like a new buffer. */
+	    buf->b_flags = BF_CHECK_RO | BF_NEVERLOADED;
+
+	    /* Init the options when loaded again. */
+	    buf->b_p_initialized = FALSE;
+	}
+	buf_clear_file(buf);
+	if (del_buf)
+	    buf->b_p_bl = FALSE;
+    }
+}
+
+/*
+ * Make buffer not contain a file.
+ */
+    void
+buf_clear_file(buf)
+    buf_T	*buf;
+{
+    buf->b_ml.ml_line_count = 1;
+    unchanged(buf, TRUE);
+#ifndef SHORT_FNAME
+    buf->b_shortname = FALSE;
+#endif
+    buf->b_p_eol = TRUE;
+    buf->b_start_eol = TRUE;
+#ifdef FEAT_MBYTE
+    buf->b_p_bomb = FALSE;
+#endif
+    buf->b_ml.ml_mfp = NULL;
+    buf->b_ml.ml_flags = ML_EMPTY;		/* empty buffer */
+#ifdef FEAT_NETBEANS_INTG
+    netbeans_deleted_all_lines(buf);
+    netbeansOpenFile = 0;  /* reset in netbeans_file_opened() */
+#endif
+}
+
+/*
+ * buf_freeall() - free all things allocated for a buffer that are related to
+ * the file.
+ */
+/*ARGSUSED*/
+    void
+buf_freeall(buf, del_buf, wipe_buf)
+    buf_T	*buf;
+    int		del_buf;	/* buffer is going to be deleted */
+    int		wipe_buf;	/* buffer is going to be wiped out */
+{
+#ifdef FEAT_AUTOCMD
+    int		is_curbuf = (buf == curbuf);
+
+    apply_autocmds(EVENT_BUFUNLOAD, buf->b_fname, buf->b_fname, FALSE, buf);
+    if (!buf_valid(buf))	    /* autocommands may delete the buffer */
+	return;
+    if (del_buf && buf->b_p_bl)
+    {
+	apply_autocmds(EVENT_BUFDELETE, buf->b_fname, buf->b_fname, FALSE, buf);
+	if (!buf_valid(buf))	    /* autocommands may delete the buffer */
+	    return;
+    }
+    if (wipe_buf)
+    {
+	apply_autocmds(EVENT_BUFWIPEOUT, buf->b_fname, buf->b_fname,
+								  FALSE, buf);
+	if (!buf_valid(buf))	    /* autocommands may delete the buffer */
+	    return;
+    }
+# ifdef FEAT_EVAL
+    if (aborting())	    /* autocmds may abort script processing */
+	return;
+# endif
+
+    /*
+     * It's possible that autocommands change curbuf to the one being deleted.
+     * This might cause curbuf to be deleted unexpectedly.  But in some cases
+     * it's OK to delete the curbuf, because a new one is obtained anyway.
+     * Therefore only return if curbuf changed to the deleted buffer.
+     */
+    if (buf == curbuf && !is_curbuf)
+	return;
+#endif
+#ifdef FEAT_DIFF
+    diff_buf_delete(buf);	    /* Can't use 'diff' for unloaded buffer. */
+#endif
+#ifdef FEAT_TCL
+    tcl_buffer_free(buf);
+#endif
+    u_blockfree(buf);		    /* free the memory allocated for undo */
+    ml_close(buf, TRUE);	    /* close and delete the memline/memfile */
+    buf->b_ml.ml_line_count = 0;    /* no lines in buffer */
+    u_clearall(buf);		    /* reset all undo information */
+#ifdef FEAT_SYN_HL
+    syntax_clear(buf);		    /* reset syntax info */
+#endif
+}
+
+/*
+ * Free a buffer structure and the things it contains related to the buffer
+ * itself (not the file, that must have been done already).
+ */
+    static void
+free_buffer(buf)
+    buf_T	*buf;
+{
+    free_buffer_stuff(buf, TRUE);
+#ifdef FEAT_PERL
+    perl_buf_free(buf);
+#endif
+#ifdef FEAT_PYTHON
+    python_buffer_free(buf);
+#endif
+#ifdef FEAT_RUBY
+    ruby_buffer_free(buf);
+#endif
+    vim_free(buf);
+}
+
+/*
+ * Free stuff in the buffer for ":bdel" and when wiping out the buffer.
+ */
+    static void
+free_buffer_stuff(buf, free_options)
+    buf_T	*buf;
+    int		free_options;		/* free options as well */
+{
+    if (free_options)
+    {
+	clear_wininfo(buf);		/* including window-local options */
+	free_buf_options(buf, TRUE);
+    }
+#ifdef FEAT_EVAL
+    var_clear(&buf->b_vars);		/* free all internal variables */
+#endif
+#ifdef FEAT_USR_CMDS
+    uc_clear(&buf->b_ucmds);		/* clear local user commands */
+#endif
+#ifdef FEAT_SIGNS
+    buf_delete_signs(buf);		/* delete any signs */
+#endif
+#ifdef FEAT_LOCALMAP
+    map_clear_int(buf, MAP_ALL_MODES, TRUE, FALSE);  /* clear local mappings */
+    map_clear_int(buf, MAP_ALL_MODES, TRUE, TRUE);   /* clear local abbrevs */
+#endif
+#ifdef FEAT_MBYTE
+    vim_free(buf->b_start_fenc);
+    buf->b_start_fenc = NULL;
+#endif
+}
+
+/*
+ * Free the b_wininfo list for buffer "buf".
+ */
+    static void
+clear_wininfo(buf)
+    buf_T	*buf;
+{
+    wininfo_T	*wip;
+
+    while (buf->b_wininfo != NULL)
+    {
+	wip = buf->b_wininfo;
+	buf->b_wininfo = wip->wi_next;
+	if (wip->wi_optset)
+	{
+	    clear_winopt(&wip->wi_opt);
+#ifdef FEAT_FOLDING
+	    deleteFoldRecurse(&wip->wi_folds);
+#endif
+	}
+	vim_free(wip);
+    }
+}
+
+#if defined(FEAT_LISTCMDS) || defined(PROTO)
+/*
+ * Go to another buffer.  Handles the result of the ATTENTION dialog.
+ */
+    void
+goto_buffer(eap, start, dir, count)
+    exarg_T	*eap;
+    int		start;
+    int		dir;
+    int		count;
+{
+# if defined(FEAT_WINDOWS) \
+		&& (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
+    buf_T	*old_curbuf = curbuf;
+
+    swap_exists_action = SEA_DIALOG;
+# endif
+    (void)do_buffer(*eap->cmd == 's' ? DOBUF_SPLIT : DOBUF_GOTO,
+					     start, dir, count, eap->forceit);
+# if defined(FEAT_WINDOWS) \
+		&& (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
+    if (swap_exists_action == SEA_QUIT && *eap->cmd == 's')
+    {
+	/* Quitting means closing the split window, nothing else. */
+	win_close(curwin, TRUE);
+	swap_exists_action = SEA_NONE;
+    }
+    else
+	handle_swap_exists(old_curbuf);
+# endif
+}
+#endif
+
+#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) || defined(PROTO)
+/*
+ * Handle the situation of swap_exists_action being set.
+ * It is allowed for "old_curbuf" to be NULL or invalid.
+ */
+    void
+handle_swap_exists(old_curbuf)
+    buf_T	*old_curbuf;
+{
+    if (swap_exists_action == SEA_QUIT)
+    {
+	/* User selected Quit at ATTENTION prompt.  Go back to previous
+	 * buffer.  If that buffer is gone or the same as the current one,
+	 * open a new, empty buffer. */
+	swap_exists_action = SEA_NONE;	/* don't want it again */
+	close_buffer(curwin, curbuf, DOBUF_UNLOAD);
+	if (!buf_valid(old_curbuf) || old_curbuf == curbuf)
+	    old_curbuf = buflist_new(NULL, NULL, 1L,
+					 BLN_CURBUF | BLN_LISTED | BLN_FORCE);
+	if (old_curbuf != NULL)
+	    enter_buffer(old_curbuf);
+	/* If "old_curbuf" is NULL we are in big trouble here... */
+    }
+    else if (swap_exists_action == SEA_RECOVER)
+    {
+	/* User selected Recover at ATTENTION prompt. */
+	msg_scroll = TRUE;
+	ml_recover();
+	MSG_PUTS("\n");	/* don't overwrite the last message */
+	cmdline_row = msg_row;
+	do_modelines();
+    }
+    swap_exists_action = SEA_NONE;
+}
+#endif
+
+#if defined(FEAT_LISTCMDS) || defined(PROTO)
+/*
+ * do_bufdel() - delete or unload buffer(s)
+ *
+ * addr_count == 0: ":bdel" - delete current buffer
+ * addr_count == 1: ":N bdel" or ":bdel N [N ..]" - first delete
+ *		    buffer "end_bnr", then any other arguments.
+ * addr_count == 2: ":N,N bdel" - delete buffers in range
+ *
+ * command can be DOBUF_UNLOAD (":bunload"), DOBUF_WIPE (":bwipeout") or
+ * DOBUF_DEL (":bdel")
+ *
+ * Returns error message or NULL
+ */
+    char_u *
+do_bufdel(command, arg, addr_count, start_bnr, end_bnr, forceit)
+    int		command;
+    char_u	*arg;		/* pointer to extra arguments */
+    int		addr_count;
+    int		start_bnr;	/* first buffer number in a range */
+    int		end_bnr;	/* buffer nr or last buffer nr in a range */
+    int		forceit;
+{
+    int		do_current = 0;	/* delete current buffer? */
+    int		deleted = 0;	/* number of buffers deleted */
+    char_u	*errormsg = NULL; /* return value */
+    int		bnr;		/* buffer number */
+    char_u	*p;
+
+#ifdef FEAT_NETBEANS_INTG
+    netbeansCloseFile = 1;
+#endif
+    if (addr_count == 0)
+    {
+	(void)do_buffer(command, DOBUF_CURRENT, FORWARD, 0, forceit);
+    }
+    else
+    {
+	if (addr_count == 2)
+	{
+	    if (*arg)		/* both range and argument is not allowed */
+		return (char_u *)_(e_trailing);
+	    bnr = start_bnr;
+	}
+	else	/* addr_count == 1 */
+	    bnr = end_bnr;
+
+	for ( ;!got_int; ui_breakcheck())
+	{
+	    /*
+	     * delete the current buffer last, otherwise when the
+	     * current buffer is deleted, the next buffer becomes
+	     * the current one and will be loaded, which may then
+	     * also be deleted, etc.
+	     */
+	    if (bnr == curbuf->b_fnum)
+		do_current = bnr;
+	    else if (do_buffer(command, DOBUF_FIRST, FORWARD, (int)bnr,
+							       forceit) == OK)
+		++deleted;
+
+	    /*
+	     * find next buffer number to delete/unload
+	     */
+	    if (addr_count == 2)
+	    {
+		if (++bnr > end_bnr)
+		    break;
+	    }
+	    else    /* addr_count == 1 */
+	    {
+		arg = skipwhite(arg);
+		if (*arg == NUL)
+		    break;
+		if (!VIM_ISDIGIT(*arg))
+		{
+		    p = skiptowhite_esc(arg);
+		    bnr = buflist_findpat(arg, p, command == DOBUF_WIPE, FALSE);
+		    if (bnr < 0)	    /* failed */
+			break;
+		    arg = p;
+		}
+		else
+		    bnr = getdigits(&arg);
+	    }
+	}
+	if (!got_int && do_current && do_buffer(command, DOBUF_FIRST,
+					  FORWARD, do_current, forceit) == OK)
+	    ++deleted;
+
+	if (deleted == 0)
+	{
+	    if (command == DOBUF_UNLOAD)
+		sprintf((char *)IObuff, _("E515: No buffers were unloaded"));
+	    else if (command == DOBUF_DEL)
+		sprintf((char *)IObuff, _("E516: No buffers were deleted"));
+	    else
+		sprintf((char *)IObuff, _("E517: No buffers were wiped out"));
+	    errormsg = IObuff;
+	}
+	else if (deleted >= p_report)
+	{
+	    if (command == DOBUF_UNLOAD)
+	    {
+		if (deleted == 1)
+		    MSG(_("1 buffer unloaded"));
+		else
+		    smsg((char_u *)_("%d buffers unloaded"), deleted);
+	    }
+	    else if (command == DOBUF_DEL)
+	    {
+		if (deleted == 1)
+		    MSG(_("1 buffer deleted"));
+		else
+		    smsg((char_u *)_("%d buffers deleted"), deleted);
+	    }
+	    else
+	    {
+		if (deleted == 1)
+		    MSG(_("1 buffer wiped out"));
+		else
+		    smsg((char_u *)_("%d buffers wiped out"), deleted);
+	    }
+	}
+    }
+
+#ifdef FEAT_NETBEANS_INTG
+    netbeansCloseFile = 0;
+#endif
+
+    return errormsg;
+}
+
+/*
+ * Implementation of the commands for the buffer list.
+ *
+ * action == DOBUF_GOTO	    go to specified buffer
+ * action == DOBUF_SPLIT    split window and go to specified buffer
+ * action == DOBUF_UNLOAD   unload specified buffer(s)
+ * action == DOBUF_DEL	    delete specified buffer(s) from buffer list
+ * action == DOBUF_WIPE	    delete specified buffer(s) really
+ *
+ * start == DOBUF_CURRENT   go to "count" buffer from current buffer
+ * start == DOBUF_FIRST	    go to "count" buffer from first buffer
+ * start == DOBUF_LAST	    go to "count" buffer from last buffer
+ * start == DOBUF_MOD	    go to "count" modified buffer from current buffer
+ *
+ * Return FAIL or OK.
+ */
+    int
+do_buffer(action, start, dir, count, forceit)
+    int		action;
+    int		start;
+    int		dir;		/* FORWARD or BACKWARD */
+    int		count;		/* buffer number or number of buffers */
+    int		forceit;	/* TRUE for :...! */
+{
+    buf_T	*buf;
+    buf_T	*bp;
+    int		unload = (action == DOBUF_UNLOAD || action == DOBUF_DEL
+						     || action == DOBUF_WIPE);
+
+    switch (start)
+    {
+	case DOBUF_FIRST:   buf = firstbuf; break;
+	case DOBUF_LAST:    buf = lastbuf;  break;
+	default:	    buf = curbuf;   break;
+    }
+    if (start == DOBUF_MOD)	    /* find next modified buffer */
+    {
+	while (count-- > 0)
+	{
+	    do
+	    {
+		buf = buf->b_next;
+		if (buf == NULL)
+		    buf = firstbuf;
+	    }
+	    while (buf != curbuf && !bufIsChanged(buf));
+	}
+	if (!bufIsChanged(buf))
+	{
+	    EMSG(_("E84: No modified buffer found"));
+	    return FAIL;
+	}
+    }
+    else if (start == DOBUF_FIRST && count) /* find specified buffer number */
+    {
+	while (buf != NULL && buf->b_fnum != count)
+	    buf = buf->b_next;
+    }
+    else
+    {
+	bp = NULL;
+	while (count > 0 || (!unload && !buf->b_p_bl && bp != buf))
+	{
+	    /* remember the buffer where we start, we come back there when all
+	     * buffers are unlisted. */
+	    if (bp == NULL)
+		bp = buf;
+	    if (dir == FORWARD)
+	    {
+		buf = buf->b_next;
+		if (buf == NULL)
+		    buf = firstbuf;
+	    }
+	    else
+	    {
+		buf = buf->b_prev;
+		if (buf == NULL)
+		    buf = lastbuf;
+	    }
+	    /* don't count unlisted buffers */
+	    if (unload || buf->b_p_bl)
+	    {
+		 --count;
+		 bp = NULL;	/* use this buffer as new starting point */
+	    }
+	    if (bp == buf)
+	    {
+		/* back where we started, didn't find anything. */
+		EMSG(_("E85: There is no listed buffer"));
+		return FAIL;
+	    }
+	}
+    }
+
+    if (buf == NULL)	    /* could not find it */
+    {
+	if (start == DOBUF_FIRST)
+	{
+	    /* don't warn when deleting */
+	    if (!unload)
+		EMSGN(_("E86: Buffer %ld does not exist"), count);
+	}
+	else if (dir == FORWARD)
+	    EMSG(_("E87: Cannot go beyond last buffer"));
+	else
+	    EMSG(_("E88: Cannot go before first buffer"));
+	return FAIL;
+    }
+
+#ifdef FEAT_GUI
+    need_mouse_correct = TRUE;
+#endif
+
+#ifdef FEAT_LISTCMDS
+    /*
+     * delete buffer buf from memory and/or the list
+     */
+    if (unload)
+    {
+	int	forward;
+	int	retval;
+
+	/* When unloading or deleting a buffer that's already unloaded and
+	 * unlisted: fail silently. */
+	if (action != DOBUF_WIPE && buf->b_ml.ml_mfp == NULL && !buf->b_p_bl)
+	    return FAIL;
+
+	if (!forceit && bufIsChanged(buf))
+	{
+#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
+	    if ((p_confirm || cmdmod.confirm) && p_write)
+	    {
+		dialog_changed(buf, FALSE);
+# ifdef FEAT_AUTOCMD
+		if (!buf_valid(buf))
+		    /* Autocommand deleted buffer, oops!  It's not changed
+		     * now. */
+		    return FAIL;
+# endif
+	    }
+	    if (bufIsChanged(buf))
+#endif
+	    {
+		EMSGN(_("E89: No write since last change for buffer %ld (add ! to override)"),
+								 buf->b_fnum);
+		return FAIL;
+	    }
+	}
+
+	/*
+	 * If deleting the last (listed) buffer, make it empty.
+	 * The last (listed) buffer cannot be unloaded.
+	 */
+	for (bp = firstbuf; bp != NULL; bp = bp->b_next)
+	    if (bp->b_p_bl && bp != buf)
+		break;
+	if (bp == NULL && buf == curbuf)
+	{
+	    if (action == DOBUF_UNLOAD)
+	    {
+		EMSG(_("E90: Cannot unload last buffer"));
+		return FAIL;
+	    }
+
+	    /* Close any other windows on this buffer, then make it empty. */
+#ifdef FEAT_WINDOWS
+	    {
+		win_T	*wp, *nextwp;
+
+		for (wp = firstwin; wp != NULL; wp = nextwp)
+		{
+		    nextwp = wp->w_next;
+		    if (wp != curwin && wp->w_buffer == buf)
+		    {
+			/* Start all over, autocommands may change the window
+			 * layout. */
+			nextwp = firstwin;
+			win_close(wp, FALSE);
+		    }
+		}
+	    }
+#endif
+	    setpcmark();
+	    retval = do_ecmd(0, NULL, NULL, NULL, ECMD_ONE,
+						  forceit ? ECMD_FORCEIT : 0);
+
+	    /*
+	     * do_ecmd() may create a new buffer, then we have to delete
+	     * the old one.  But do_ecmd() may have done that already, check
+	     * if the buffer still exists.
+	     */
+	    if (buf != curbuf && buf_valid(buf) && buf->b_nwindows == 0)
+		close_buffer(NULL, buf, action);
+	    return retval;
+	}
+
+#ifdef FEAT_WINDOWS
+	/*
+	 * If the deleted buffer is the current one, close the current window
+	 * (unless it's the only window).
+	 */
+	while (buf == curbuf && firstwin != lastwin)
+	    win_close(curwin, FALSE);
+#endif
+
+	/*
+	 * If the buffer to be deleted is not the current one, delete it here.
+	 */
+	if (buf != curbuf)
+	{
+#ifdef FEAT_WINDOWS
+	    close_windows(buf);
+#endif
+	    if (buf != curbuf && buf_valid(buf) && buf->b_nwindows <= 0)
+		close_buffer(NULL, buf, action);
+	    return OK;
+	}
+
+	/*
+	 * Deleting the current buffer: Need to find another buffer to go to.
+	 * There must be another, otherwise it would have been handled above.
+	 * First use au_new_curbuf, if it is valid.
+	 * Then prefer the buffer we most recently visited.
+	 * Else try to find one that is loaded, after the current buffer,
+	 * then before the current buffer.
+	 * Finally use any buffer.
+	 */
+	buf = NULL;	/* selected buffer */
+	bp = NULL;	/* used when no loaded buffer found */
+#ifdef FEAT_AUTOCMD
+	if (au_new_curbuf != NULL && buf_valid(au_new_curbuf))
+	    buf = au_new_curbuf;
+# ifdef FEAT_JUMPLIST
+	else
+# endif
+#endif
+#ifdef FEAT_JUMPLIST
+	    if (curwin->w_jumplistlen > 0)
+	{
+	    int     jumpidx;
+
+	    jumpidx = curwin->w_jumplistidx - 1;
+	    if (jumpidx < 0)
+		jumpidx = curwin->w_jumplistlen - 1;
+
+	    forward = jumpidx;
+	    while (jumpidx != curwin->w_jumplistidx)
+	    {
+		buf = buflist_findnr(curwin->w_jumplist[jumpidx].fmark.fnum);
+		if (buf != NULL)
+		{
+		    if (buf == curbuf || !buf->b_p_bl)
+			buf = NULL;	/* skip current and unlisted bufs */
+		    else if (buf->b_ml.ml_mfp == NULL)
+		    {
+			/* skip unloaded buf, but may keep it for later */
+			if (bp == NULL)
+			    bp = buf;
+			buf = NULL;
+		    }
+		}
+		if (buf != NULL)   /* found a valid buffer: stop searching */
+		    break;
+		/* advance to older entry in jump list */
+		if (!jumpidx && curwin->w_jumplistidx == curwin->w_jumplistlen)
+		    break;
+		if (--jumpidx < 0)
+		    jumpidx = curwin->w_jumplistlen - 1;
+		if (jumpidx == forward)		/* List exhausted for sure */
+		    break;
+	    }
+	}
+#endif
+
+	if (buf == NULL)	/* No previous buffer, Try 2'nd approach */
+	{
+	    forward = TRUE;
+	    buf = curbuf->b_next;
+	    for (;;)
+	    {
+		if (buf == NULL)
+		{
+		    if (!forward)	/* tried both directions */
+			break;
+		    buf = curbuf->b_prev;
+		    forward = FALSE;
+		    continue;
+		}
+		/* in non-help buffer, try to skip help buffers, and vv */
+		if (buf->b_help == curbuf->b_help && buf->b_p_bl)
+		{
+		    if (buf->b_ml.ml_mfp != NULL)   /* found loaded buffer */
+			break;
+		    if (bp == NULL)	/* remember unloaded buf for later */
+			bp = buf;
+		}
+		if (forward)
+		    buf = buf->b_next;
+		else
+		    buf = buf->b_prev;
+	    }
+	}
+	if (buf == NULL)	/* No loaded buffer, use unloaded one */
+	    buf = bp;
+	if (buf == NULL)	/* No loaded buffer, find listed one */
+	{
+	    for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+		if (buf->b_p_bl && buf != curbuf)
+		    break;
+	}
+	if (buf == NULL)	/* Still no buffer, just take one */
+	{
+	    if (curbuf->b_next != NULL)
+		buf = curbuf->b_next;
+	    else
+		buf = curbuf->b_prev;
+	}
+    }
+
+    /*
+     * make buf current buffer
+     */
+    if (action == DOBUF_SPLIT)	    /* split window first */
+    {
+# ifdef FEAT_WINDOWS
+	/* jump to first window containing buf if one exists ("useopen") */
+	if (vim_strchr(p_swb, 'u') && buf_jump_open_win(buf))
+	    return OK;
+	if (win_split(0, 0) == FAIL)
+# endif
+	    return FAIL;
+    }
+#endif
+
+    /* go to current buffer - nothing to do */
+    if (buf == curbuf)
+	return OK;
+
+    /*
+     * Check if the current buffer may be abandoned.
+     */
+    if (action == DOBUF_GOTO && !can_abandon(curbuf, forceit))
+    {
+#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
+	if ((p_confirm || cmdmod.confirm) && p_write)
+	{
+	    dialog_changed(curbuf, FALSE);
+# ifdef FEAT_AUTOCMD
+	    if (!buf_valid(buf))
+		/* Autocommand deleted buffer, oops! */
+		return FAIL;
+# endif
+	}
+	if (bufIsChanged(curbuf))
+#endif
+	{
+	    EMSG(_(e_nowrtmsg));
+	    return FAIL;
+	}
+    }
+
+    /* Go to the other buffer. */
+    set_curbuf(buf, action);
+
+#if defined(FEAT_LISTCMDS) && defined(FEAT_SCROLLBIND)
+    if (action == DOBUF_SPLIT)
+	curwin->w_p_scb = FALSE;	/* reset 'scrollbind' */
+#endif
+
+#if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
+    if (aborting())	    /* autocmds may abort script processing */
+	return FAIL;
+#endif
+
+    return OK;
+}
+
+#endif /* FEAT_LISTCMDS */
+
+/*
+ * Set current buffer to "buf".  Executes autocommands and closes current
+ * buffer.  "action" tells how to close the current buffer:
+ * DOBUF_GOTO	    free or hide it
+ * DOBUF_SPLIT	    nothing
+ * DOBUF_UNLOAD	    unload it
+ * DOBUF_DEL	    delete it
+ * DOBUF_WIPE	    wipe it out
+ */
+    void
+set_curbuf(buf, action)
+    buf_T	*buf;
+    int		action;
+{
+    buf_T	*prevbuf;
+    int		unload = (action == DOBUF_UNLOAD || action == DOBUF_DEL
+						     || action == DOBUF_WIPE);
+
+    setpcmark();
+    curwin->w_alt_fnum = curbuf->b_fnum; /* remember alternate file */
+    buflist_altfpos();			 /* remember curpos */
+
+#ifdef FEAT_VISUAL
+    /* Don't restart Select mode after switching to another buffer. */
+    VIsual_reselect = FALSE;
+#endif
+
+    /* close_windows() or apply_autocmds() may change curbuf */
+    prevbuf = curbuf;
+
+#ifdef FEAT_AUTOCMD
+    apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf);
+# ifdef FEAT_EVAL
+    if (buf_valid(prevbuf) && !aborting())
+# else
+    if (buf_valid(prevbuf))
+# endif
+#endif
+    {
+#ifdef FEAT_WINDOWS
+	if (unload)
+	    close_windows(prevbuf);
+#endif
+#if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
+	if (buf_valid(prevbuf) && !aborting())
+#else
+	if (buf_valid(prevbuf))
+#endif
+	    close_buffer(prevbuf == curwin->w_buffer ? curwin : NULL, prevbuf,
+		    unload ? action : (action == DOBUF_GOTO
+			&& !P_HID(prevbuf)
+			&& !bufIsChanged(prevbuf)) ? DOBUF_UNLOAD : 0);
+    }
+#ifdef FEAT_AUTOCMD
+# ifdef FEAT_EVAL
+    /* An autocommand may have deleted buf or aborted the script processing! */
+    if (buf_valid(buf) && !aborting())
+# else
+    if (buf_valid(buf))	    /* an autocommand may have deleted buf! */
+# endif
+#endif
+	enter_buffer(buf);
+}
+
+/*
+ * Enter a new current buffer.
+ * Old curbuf must have been abandoned already!
+ */
+    void
+enter_buffer(buf)
+    buf_T	*buf;
+{
+    /* Copy buffer and window local option values.  Not for a help buffer. */
+    buf_copy_options(buf, BCO_ENTER | BCO_NOHELP);
+    if (!buf->b_help)
+	get_winopts(buf);
+#ifdef FEAT_FOLDING
+    else
+	/* Remove all folds in the window. */
+	clearFolding(curwin);
+    foldUpdateAll(curwin);	/* update folds (later). */
+#endif
+
+    /* Get the buffer in the current window. */
+    curwin->w_buffer = buf;
+    curbuf = buf;
+    ++curbuf->b_nwindows;
+
+#ifdef FEAT_DIFF
+    diff_new_buffer();
+#endif
+
+    /* Cursor on first line by default. */
+    curwin->w_cursor.lnum = 1;
+    curwin->w_cursor.col = 0;
+#ifdef FEAT_VIRTUALEDIT
+    curwin->w_cursor.coladd = 0;
+#endif
+    curwin->w_set_curswant = TRUE;
+
+    /* Make sure the buffer is loaded. */
+    if (curbuf->b_ml.ml_mfp == NULL)	/* need to load the file */
+	open_buffer(FALSE, NULL);
+    else
+    {
+	need_fileinfo = TRUE;		/* display file info after redraw */
+	(void)buf_check_timestamp(curbuf, FALSE); /* check if file changed */
+#ifdef FEAT_AUTOCMD
+	curwin->w_topline = 1;
+# ifdef FEAT_DIFF
+	curwin->w_topfill = 0;
+# endif
+	apply_autocmds(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf);
+	apply_autocmds(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf);
+#endif
+    }
+
+    /* If autocommands did not change the cursor position, restore cursor lnum
+     * and possibly cursor col. */
+    if (curwin->w_cursor.lnum == 1 && inindent(0))
+	buflist_getfpos();
+
+    check_arg_idx(curwin);		/* check for valid arg_idx */
+#ifdef FEAT_TITLE
+    maketitle();
+#endif
+#ifdef FEAT_AUTOCMD
+    if (curwin->w_topline == 1)		/* when autocmds didn't change it */
+#endif
+	scroll_cursor_halfway(FALSE);	/* redisplay at correct position */
+
+#if defined(FEAT_NETBEANS_INTG) || defined(FEAT_SUN_WORKSHOP)
+    /* Change directories when the acd option is set on. */
+    if (p_acd && curbuf->b_ffname != NULL
+				     && vim_chdirfile(curbuf->b_ffname) == OK)
+	shorten_fnames(TRUE);
+#endif
+
+#ifdef FEAT_KEYMAP
+    if (curbuf->b_kmap_state & KEYMAP_INIT)
+	keymap_init();
+#endif
+    redraw_later(NOT_VALID);
+}
+
+/*
+ * functions for dealing with the buffer list
+ */
+
+/*
+ * Add a file name to the buffer list.  Return a pointer to the buffer.
+ * If the same file name already exists return a pointer to that buffer.
+ * If it does not exist, or if fname == NULL, a new entry is created.
+ * If (flags & BLN_CURBUF) is TRUE, may use current buffer.
+ * If (flags & BLN_LISTED) is TRUE, add new buffer to buffer list.
+ * If (flags & BLN_DUMMY) is TRUE, don't count it as a real buffer.
+ * If (flags & BLN_FORCE) is TRUE, don't abort on an error.
+ * This is the ONLY way to create a new buffer.
+ */
+static int  top_file_num = 1;		/* highest file number */
+
+    buf_T *
+buflist_new(ffname, sfname, lnum, flags)
+    char_u	*ffname;	/* full path of fname or relative */
+    char_u	*sfname;	/* short fname or NULL */
+    linenr_T	lnum;		/* preferred cursor line */
+    int		flags;		/* BLN_ defines */
+{
+    buf_T	*buf;
+#ifdef UNIX
+    struct stat	st;
+#endif
+
+    fname_expand(curbuf, &ffname, &sfname);	/* will allocate ffname */
+
+    /*
+     * If file name already exists in the list, update the entry.
+     */
+#ifdef UNIX
+    /* On Unix we can use inode numbers when the file exists.  Works better
+     * for hard links. */
+    if (sfname == NULL || mch_stat((char *)sfname, &st) < 0)
+	st.st_dev = (dev_T)-1;
+#endif
+    if (ffname != NULL && !(flags & BLN_DUMMY) && (buf =
+#ifdef UNIX
+		buflist_findname_stat(ffname, &st)
+#else
+		buflist_findname(ffname)
+#endif
+		) != NULL)
+    {
+	vim_free(ffname);
+	if (lnum != 0)
+	    buflist_setfpos(buf, curwin, lnum, (colnr_T)0, FALSE);
+	/* copy the options now, if 'cpo' doesn't have 's' and not done
+	 * already */
+	buf_copy_options(buf, 0);
+	if ((flags & BLN_LISTED) && !buf->b_p_bl)
+	{
+	    buf->b_p_bl = TRUE;
+#ifdef FEAT_AUTOCMD
+	    if (!(flags & BLN_DUMMY))
+		apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, buf);
+#endif
+	}
+	return buf;
+    }
+
+    /*
+     * If the current buffer has no name and no contents, use the current
+     * buffer.	Otherwise: Need to allocate a new buffer structure.
+     *
+     * This is the ONLY place where a new buffer structure is allocated!
+     */
+    buf = NULL;
+    if ((flags & BLN_CURBUF)
+	    && curbuf != NULL
+	    && curbuf->b_ffname == NULL
+	    && curbuf->b_nwindows <= 1
+	    && (curbuf->b_ml.ml_mfp == NULL || bufempty()))
+    {
+	buf = curbuf;
+#ifdef FEAT_AUTOCMD
+	/* It's like this buffer is deleted.  Watch out for autocommands that
+	 * change curbuf!  If that happens, allocate a new buffer anyway. */
+	if (curbuf->b_p_bl)
+	    apply_autocmds(EVENT_BUFDELETE, NULL, NULL, FALSE, curbuf);
+	if (buf == curbuf)
+	    apply_autocmds(EVENT_BUFWIPEOUT, NULL, NULL, FALSE, curbuf);
+# ifdef FEAT_EVAL
+	/* autocmds may abort script processing */
+	if (!(flags & BLN_FORCE) && aborting())
+	    return NULL;
+# endif
+#endif
+#ifdef FEAT_QUICKFIX
+# ifdef FEAT_AUTOCMD
+	if (buf == curbuf)
+# endif
+	{
+	    /* Make sure 'bufhidden' and 'buftype' are empty */
+	    clear_string_option(&buf->b_p_bh);
+	    clear_string_option(&buf->b_p_bt);
+	}
+#endif
+    }
+    if (buf != curbuf || curbuf == NULL)
+    {
+	buf = (buf_T *)alloc_clear((unsigned)sizeof(buf_T));
+	if (buf == NULL)
+	{
+	    vim_free(ffname);
+	    return NULL;
+	}
+    }
+
+    if (ffname != NULL)
+    {
+	buf->b_ffname = ffname;
+	buf->b_sfname = vim_strsave(sfname);
+    }
+
+    clear_wininfo(buf);
+    buf->b_wininfo = (wininfo_T *)alloc_clear((unsigned)sizeof(wininfo_T));
+
+    if ((ffname != NULL && (buf->b_ffname == NULL || buf->b_sfname == NULL))
+	    || buf->b_wininfo == NULL)
+    {
+	vim_free(buf->b_ffname);
+	buf->b_ffname = NULL;
+	vim_free(buf->b_sfname);
+	buf->b_sfname = NULL;
+	if (buf != curbuf)
+	    free_buffer(buf);
+	return NULL;
+    }
+
+    if (buf == curbuf)
+    {
+	/* free all things allocated for this buffer */
+	buf_freeall(buf, FALSE, FALSE);
+	if (buf != curbuf)	 /* autocommands deleted the buffer! */
+	    return NULL;
+#if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
+	/* autocmds may abort script processing */
+	if (!(flags & BLN_FORCE) && aborting())
+	    return NULL;
+#endif
+	/* buf->b_nwindows = 0; why was this here? */
+	free_buffer_stuff(buf, FALSE);	/* delete local variables et al. */
+#ifdef FEAT_KEYMAP
+	/* need to reload lmaps and set b:keymap_name */
+	curbuf->b_kmap_state |= KEYMAP_INIT;
+#endif
+    }
+    else
+    {
+	/*
+	 * put new buffer at the end of the buffer list
+	 */
+	buf->b_next = NULL;
+	if (firstbuf == NULL)		/* buffer list is empty */
+	{
+	    buf->b_prev = NULL;
+	    firstbuf = buf;
+	}
+	else				/* append new buffer at end of list */
+	{
+	    lastbuf->b_next = buf;
+	    buf->b_prev = lastbuf;
+	}
+	lastbuf = buf;
+
+	buf->b_fnum = top_file_num++;
+	if (top_file_num < 0)		/* wrap around (may cause duplicates) */
+	{
+	    EMSG(_("W14: Warning: List of file names overflow"));
+	    if (emsg_silent == 0)
+	    {
+		out_flush();
+		ui_delay(3000L, TRUE);	/* make sure it is noticed */
+	    }
+	    top_file_num = 1;
+	}
+
+	/*
+	 * Always copy the options from the current buffer.
+	 */
+	buf_copy_options(buf, BCO_ALWAYS);
+    }
+
+    buf->b_wininfo->wi_fpos.lnum = lnum;
+    buf->b_wininfo->wi_win = curwin;
+
+#ifdef FEAT_EVAL
+    var_init(&buf->b_vars);		/* init internal variables */
+#endif
+
+    buf->b_fname = buf->b_sfname;
+#ifdef UNIX
+    if (st.st_dev == (dev_T)-1)
+	buf->b_dev = -1;
+    else
+    {
+	buf->b_dev = st.st_dev;
+	buf->b_ino = st.st_ino;
+    }
+#endif
+    buf->b_u_synced = TRUE;
+    buf->b_flags = BF_CHECK_RO | BF_NEVERLOADED;
+    buf_clear_file(buf);
+    clrallmarks(buf);			/* clear marks */
+    fmarks_check_names(buf);		/* check file marks for this file */
+    buf->b_p_bl = (flags & BLN_LISTED) ? TRUE : FALSE;	/* init 'buflisted' */
+#ifdef FEAT_AUTOCMD
+    if (!(flags & BLN_DUMMY))
+    {
+	apply_autocmds(EVENT_BUFNEW, NULL, NULL, FALSE, buf);
+	if (flags & BLN_LISTED)
+	    apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, buf);
+# ifdef FEAT_EVAL
+	/* autocmds may abort script processing */
+	if (!(flags & BLN_FORCE) && aborting())
+	    return NULL;
+# endif
+    }
+#endif
+
+    return buf;
+}
+
+/*
+ * Free the memory for the options of a buffer.
+ * If "free_p_ff" is TRUE also free 'fileformat', 'buftype' and
+ * 'fileencoding'.
+ */
+    void
+free_buf_options(buf, free_p_ff)
+    buf_T	*buf;
+    int		free_p_ff;
+{
+    if (free_p_ff)
+    {
+#ifdef FEAT_MBYTE
+	clear_string_option(&buf->b_p_fenc);
+#endif
+	clear_string_option(&buf->b_p_ff);
+#ifdef FEAT_QUICKFIX
+	clear_string_option(&buf->b_p_bh);
+	clear_string_option(&buf->b_p_bt);
+#endif
+    }
+#ifdef FEAT_FIND_ID
+    clear_string_option(&buf->b_p_def);
+    clear_string_option(&buf->b_p_inc);
+# ifdef FEAT_EVAL
+    clear_string_option(&buf->b_p_inex);
+# endif
+#endif
+#if defined(FEAT_CINDENT) && defined(FEAT_EVAL)
+    clear_string_option(&buf->b_p_inde);
+    clear_string_option(&buf->b_p_indk);
+#endif
+#ifdef FEAT_CRYPT
+    clear_string_option(&buf->b_p_key);
+#endif
+    clear_string_option(&buf->b_p_kp);
+    clear_string_option(&buf->b_p_mps);
+    clear_string_option(&buf->b_p_fo);
+    clear_string_option(&buf->b_p_isk);
+#ifdef FEAT_KEYMAP
+    clear_string_option(&buf->b_p_keymap);
+    ga_clear(&buf->b_kmap_ga);
+#endif
+#ifdef FEAT_COMMENTS
+    clear_string_option(&buf->b_p_com);
+#endif
+#ifdef FEAT_FOLDING
+    clear_string_option(&buf->b_p_cms);
+#endif
+    clear_string_option(&buf->b_p_nf);
+#ifdef FEAT_SYN_HL
+    clear_string_option(&buf->b_p_syn);
+#endif
+#ifdef FEAT_SEARCHPATH
+    clear_string_option(&buf->b_p_sua);
+#endif
+#ifdef FEAT_AUTOCMD
+    clear_string_option(&buf->b_p_ft);
+#endif
+#ifdef FEAT_OSFILETYPE
+    clear_string_option(&buf->b_p_oft);
+#endif
+#ifdef FEAT_CINDENT
+    clear_string_option(&buf->b_p_cink);
+    clear_string_option(&buf->b_p_cino);
+#endif
+#if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT)
+    clear_string_option(&buf->b_p_cinw);
+#endif
+#ifdef FEAT_INS_EXPAND
+    clear_string_option(&buf->b_p_cpt);
+#endif
+#ifdef FEAT_QUICKFIX
+    clear_string_option(&buf->b_p_gp);
+    clear_string_option(&buf->b_p_mp);
+    clear_string_option(&buf->b_p_efm);
+#endif
+    clear_string_option(&buf->b_p_ep);
+    clear_string_option(&buf->b_p_path);
+    clear_string_option(&buf->b_p_tags);
+#ifdef FEAT_INS_EXPAND
+    clear_string_option(&buf->b_p_dict);
+    clear_string_option(&buf->b_p_tsr);
+#endif
+    buf->b_p_ar = -1;
+}
+
+/*
+ * get alternate file n
+ * set linenr to lnum or altfpos.lnum if lnum == 0
+ *	also set cursor column to altfpos.col if 'startofline' is not set.
+ * if (options & GETF_SETMARK) call setpcmark()
+ * if (options & GETF_ALT) we are jumping to an alternate file.
+ * if (options & GETF_SWITCH) respect 'switchbuf' settings when jumping
+ *
+ * return FAIL for failure, OK for success
+ */
+    int
+buflist_getfile(n, lnum, options, forceit)
+    int		n;
+    linenr_T	lnum;
+    int		options;
+    int		forceit;
+{
+    buf_T	*buf;
+#ifdef FEAT_WINDOWS
+    win_T	*wp = NULL;
+#endif
+    pos_T	*fpos;
+    colnr_T	col;
+
+    buf = buflist_findnr(n);
+    if (buf == NULL)
+    {
+	if ((options & GETF_ALT) && n == 0)
+	    EMSG(_(e_noalt));
+	else
+	    EMSGN(_("E92: Buffer %ld not found"), n);
+	return FAIL;
+    }
+
+    /* if alternate file is the current buffer, nothing to do */
+    if (buf == curbuf)
+	return OK;
+
+#ifdef FEAT_CMDWIN
+    if (cmdwin_type != 0)
+	return FAIL;
+#endif
+
+    /* altfpos may be changed by getfile(), get it now */
+    if (lnum == 0)
+    {
+	fpos = buflist_findfpos(buf);
+	lnum = fpos->lnum;
+	col = fpos->col;
+    }
+    else
+	col = 0;
+
+#ifdef FEAT_WINDOWS
+    if (options & GETF_SWITCH)
+    {
+	/* use existing open window for buffer if wanted */
+	if (vim_strchr(p_swb, 'u'))     /* useopen */
+	    wp = buf_jump_open_win(buf);
+	/* split window if wanted ("split") */
+	if (wp == NULL && vim_strchr(p_swb, 't') && !bufempty())
+	{
+	    if (win_split(0, 0) == FAIL)
+		return FAIL;
+# ifdef FEAT_SCROLLBIND
+	    curwin->w_p_scb = FALSE;
+# endif
+	}
+    }
+#endif
+
+    ++RedrawingDisabled;
+    if (getfile(buf->b_fnum, NULL, NULL, (options & GETF_SETMARK),
+							  lnum, forceit) <= 0)
+    {
+	--RedrawingDisabled;
+
+	/* cursor is at to BOL and w_cursor.lnum is checked due to getfile() */
+	if (!p_sol && col != 0)
+	{
+	    curwin->w_cursor.col = col;
+	    check_cursor_col();
+#ifdef FEAT_VIRTUALEDIT
+	    curwin->w_cursor.coladd = 0;
+#endif
+	    curwin->w_set_curswant = TRUE;
+	}
+	return OK;
+    }
+    --RedrawingDisabled;
+    return FAIL;
+}
+
+/*
+ * go to the last know line number for the current buffer
+ */
+    void
+buflist_getfpos()
+{
+    pos_T	*fpos;
+
+    fpos = buflist_findfpos(curbuf);
+
+    curwin->w_cursor.lnum = fpos->lnum;
+    check_cursor_lnum();
+
+    if (p_sol)
+	curwin->w_cursor.col = 0;
+    else
+    {
+	curwin->w_cursor.col = fpos->col;
+	check_cursor_col();
+#ifdef FEAT_VIRTUALEDIT
+	curwin->w_cursor.coladd = 0;
+#endif
+	curwin->w_set_curswant = TRUE;
+    }
+}
+
+/*
+ * Find file in buffer list by name (it has to be for the current window).
+ * "ffname" must have a full path.
+ */
+    buf_T *
+buflist_findname(ffname)
+    char_u	*ffname;
+{
+#ifdef UNIX
+    struct stat st;
+
+    if (mch_stat((char *)ffname, &st) < 0)
+	st.st_dev = (dev_T)-1;
+    return buflist_findname_stat(ffname, &st);
+}
+
+/*
+ * Same as buflist_findname(), but pass the stat structure to avoid getting it
+ * twice for the same file.
+ */
+    static buf_T *
+buflist_findname_stat(ffname, stp)
+    char_u	*ffname;
+    struct stat	*stp;
+{
+#endif
+    buf_T	*buf;
+
+    for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+	if (!otherfile_buf(buf, ffname
+#ifdef UNIX
+		    , stp
+#endif
+		    ))
+	    return buf;
+    return NULL;
+}
+
+#if defined(FEAT_LISTCMDS) || defined(FEAT_EVAL) || defined(FEAT_PERL) || defined(PROTO)
+/*
+ * Find file in buffer list by a regexp pattern.
+ * Return fnum of the found buffer.
+ * Return < 0 for error.
+ */
+/*ARGSUSED*/
+    int
+buflist_findpat(pattern, pattern_end, unlisted, diffmode)
+    char_u	*pattern;
+    char_u	*pattern_end;	/* pointer to first char after pattern */
+    int		unlisted;	/* find unlisted buffers */
+    int		diffmode;	/* find diff-mode buffers only */
+{
+    buf_T	*buf;
+    regprog_T	*prog;
+    int		match = -1;
+    int		find_listed;
+    char_u	*pat;
+    char_u	*patend;
+    int		attempt;
+    char_u	*p;
+    int		toggledollar;
+
+    if (pattern_end == pattern + 1 && (*pattern == '%' || *pattern == '#'))
+    {
+	if (*pattern == '%')
+	    match = curbuf->b_fnum;
+	else
+	    match = curwin->w_alt_fnum;
+#ifdef FEAT_DIFF
+	if (diffmode && !diff_mode_buf(buflist_findnr(match)))
+	    match = -1;
+#endif
+    }
+
+    /*
+     * Try four ways of matching a listed buffer:
+     * attempt == 0: without '^' or '$' (at any position)
+     * attempt == 1: with '^' at start (only at postion 0)
+     * attempt == 2: with '$' at end (only match at end)
+     * attempt == 3: with '^' at start and '$' at end (only full match)
+     * Repeat this for finding an unlisted buffer if there was no matching
+     * listed buffer.
+     */
+    else
+    {
+	pat = file_pat_to_reg_pat(pattern, pattern_end, NULL, FALSE);
+	if (pat == NULL)
+	    return -1;
+	patend = pat + STRLEN(pat) - 1;
+	toggledollar = (patend > pat && *patend == '$');
+
+	/* First try finding a listed buffer.  If not found and "unlisted"
+	 * is TRUE, try finding an unlisted buffer. */
+	find_listed = TRUE;
+	for (;;)
+	{
+	    for (attempt = 0; attempt <= 3; ++attempt)
+	    {
+		/* may add '^' and '$' */
+		if (toggledollar)
+		    *patend = (attempt < 2) ? NUL : '$'; /* add/remove '$' */
+		p = pat;
+		if (*p == '^' && !(attempt & 1))	 /* add/remove '^' */
+		    ++p;
+		prog = vim_regcomp(p, p_magic ? RE_MAGIC : 0);
+		if (prog == NULL)
+		{
+		    vim_free(pat);
+		    return -1;
+		}
+
+		for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+		    if (buf->b_p_bl == find_listed
+#ifdef FEAT_DIFF
+			    && (!diffmode || diff_mode_buf(buf))
+#endif
+			    && buflist_match(prog, buf) != NULL)
+		    {
+			if (match >= 0)		/* already found a match */
+			{
+			    match = -2;
+			    break;
+			}
+			match = buf->b_fnum;	/* remember first match */
+		    }
+
+		vim_free(prog);
+		if (match >= 0)			/* found one match */
+		    break;
+	    }
+
+	    /* Only search for unlisted buffers if there was no match with
+	     * a listed buffer. */
+	    if (!unlisted || !find_listed || match != -1)
+		break;
+	    find_listed = FALSE;
+	}
+
+	vim_free(pat);
+    }
+
+    if (match == -2)
+	EMSG2(_("E93: More than one match for %s"), pattern);
+    else if (match < 0)
+	EMSG2(_("E94: No matching buffer for %s"), pattern);
+    return match;
+}
+#endif
+
+#if defined(FEAT_CMDL_COMPL) || defined(PROTO)
+
+/*
+ * Find all buffer names that match.
+ * For command line expansion of ":buf" and ":sbuf".
+ * Return OK if matches found, FAIL otherwise.
+ */
+    int
+ExpandBufnames(pat, num_file, file, options)
+    char_u	*pat;
+    int		*num_file;
+    char_u	***file;
+    int		options;
+{
+    int		count = 0;
+    buf_T	*buf;
+    int		round;
+    char_u	*p;
+    int		attempt;
+    regprog_T	*prog;
+
+    *num_file = 0;		    /* return values in case of FAIL */
+    *file = NULL;
+
+    /*
+     * attempt == 1: try match with    '^', match at start
+     * attempt == 2: try match without '^', match anywhere
+     */
+    for (attempt = 1; attempt <= 2; ++attempt)
+    {
+	if (attempt == 2)
+	{
+	    if (*pat != '^')	    /* there's no '^', no need to try again */
+		break;
+	    ++pat;		    /* skip the '^' */
+	}
+	prog = vim_regcomp(pat, p_magic ? RE_MAGIC : 0);
+	if (prog == NULL)
+	    return FAIL;
+
+	/*
+	 * round == 1: Count the matches.
+	 * round == 2: Build the array to keep the matches.
+	 */
+	for (round = 1; round <= 2; ++round)
+	{
+	    count = 0;
+	    for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+	    {
+		if (!buf->b_p_bl)	/* skip unlisted buffers */
+		    continue;
+		p = buflist_match(prog, buf);
+		if (p != NULL)
+		{
+		    if (round == 1)
+			++count;
+		    else
+		    {
+			if (options & WILD_HOME_REPLACE)
+			    p = home_replace_save(buf, p);
+			else
+			    p = vim_strsave(p);
+			(*file)[count++] = p;
+		    }
+		}
+	    }
+	    if (count == 0)	/* no match found, break here */
+		break;
+	    if (round == 1)
+	    {
+		*file = (char_u **)alloc((unsigned)(count * sizeof(char_u *)));
+		if (*file == NULL)
+		{
+		    vim_free(prog);
+		    return FAIL;
+		}
+	    }
+	}
+	vim_free(prog);
+	if (count)		/* match(es) found, break here */
+	    break;
+    }
+
+    *num_file = count;
+    return (count == 0 ? FAIL : OK);
+}
+
+#endif /* FEAT_CMDL_COMPL */
+
+#ifdef HAVE_BUFLIST_MATCH
+/*
+ * Check for a match on the file name for buffer "buf" with regprog "prog".
+ */
+    static char_u *
+buflist_match(prog, buf)
+    regprog_T	*prog;
+    buf_T	*buf;
+{
+    char_u	*match;
+
+    /* First try the short file name, then the long file name. */
+    match = fname_match(prog, buf->b_sfname);
+    if (match == NULL)
+	match = fname_match(prog, buf->b_ffname);
+
+    return match;
+}
+
+/*
+ * Try matching the regexp in "prog" with file name "name".
+ * Return "name" when there is a match, NULL when not.
+ */
+    static char_u *
+fname_match(prog, name)
+    regprog_T	*prog;
+    char_u	*name;
+{
+    char_u	*match = NULL;
+    char_u	*p;
+    regmatch_T	regmatch;
+
+    if (name != NULL)
+    {
+	regmatch.regprog = prog;
+#ifdef CASE_INSENSITIVE_FILENAME
+	regmatch.rm_ic = TRUE;		/* Always ignore case */
+#else
+	regmatch.rm_ic = FALSE;		/* Never ignore case */
+#endif
+
+	if (vim_regexec(&regmatch, name, (colnr_T)0))
+	    match = name;
+	else
+	{
+	    /* Replace $(HOME) with '~' and try matching again. */
+	    p = home_replace_save(NULL, name);
+	    if (p != NULL && vim_regexec(&regmatch, p, (colnr_T)0))
+		match = name;
+	    vim_free(p);
+	}
+    }
+
+    return match;
+}
+#endif
+
+/*
+ * find file in buffer list by number
+ */
+    buf_T *
+buflist_findnr(nr)
+    int		nr;
+{
+    buf_T	*buf;
+
+    if (nr == 0)
+	nr = curwin->w_alt_fnum;
+    for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+	if (buf->b_fnum == nr)
+	    return (buf);
+    return NULL;
+}
+
+/*
+ * Get name of file 'n' in the buffer list.
+ * When the file has no name an empty string is returned.
+ * home_replace() is used to shorten the file name (used for marks).
+ * Returns a pointer to allocated memory, of NULL when failed.
+ */
+    char_u *
+buflist_nr2name(n, fullname, helptail)
+    int		n;
+    int		fullname;
+    int		helptail;	/* for help buffers return tail only */
+{
+    buf_T	*buf;
+
+    buf = buflist_findnr(n);
+    if (buf == NULL)
+	return NULL;
+    return home_replace_save(helptail ? buf : NULL,
+				     fullname ? buf->b_ffname : buf->b_fname);
+}
+
+/*
+ * Set the "lnum" and "col" for the buffer "buf" and the current window.
+ * When "copy_options" is TRUE save the local window option values.
+ * When "lnum" is 0 only do the options.
+ */
+    static void
+buflist_setfpos(buf, win, lnum, col, copy_options)
+    buf_T	*buf;
+    win_T	*win;
+    linenr_T	lnum;
+    colnr_T	col;
+    int		copy_options;
+{
+    wininfo_T	*wip;
+
+    for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
+	if (wip->wi_win == win)
+	    break;
+    if (wip == NULL)
+    {
+	/* allocate a new entry */
+	wip = (wininfo_T *)alloc_clear((unsigned)sizeof(wininfo_T));
+	if (wip == NULL)
+	    return;
+	wip->wi_win = win;
+	if (lnum == 0)		/* set lnum even when it's 0 */
+	    lnum = 1;
+    }
+    else
+    {
+	/* remove the entry from the list */
+	if (wip->wi_prev)
+	    wip->wi_prev->wi_next = wip->wi_next;
+	else
+	    buf->b_wininfo = wip->wi_next;
+	if (wip->wi_next)
+	    wip->wi_next->wi_prev = wip->wi_prev;
+	if (copy_options && wip->wi_optset)
+	{
+	    clear_winopt(&wip->wi_opt);
+#ifdef FEAT_FOLDING
+	    deleteFoldRecurse(&wip->wi_folds);
+#endif
+	}
+    }
+    if (lnum != 0)
+    {
+	wip->wi_fpos.lnum = lnum;
+	wip->wi_fpos.col = col;
+    }
+    if (copy_options)
+    {
+	/* Save the window-specific option values. */
+	copy_winopt(&win->w_onebuf_opt, &wip->wi_opt);
+#ifdef FEAT_FOLDING
+	wip->wi_fold_manual = win->w_fold_manual;
+	cloneFoldGrowArray(&win->w_folds, &wip->wi_folds);
+#endif
+	wip->wi_optset = TRUE;
+    }
+
+    /* insert the entry in front of the list */
+    wip->wi_next = buf->b_wininfo;
+    buf->b_wininfo = wip;
+    wip->wi_prev = NULL;
+    if (wip->wi_next)
+	wip->wi_next->wi_prev = wip;
+
+    return;
+}
+
+/*
+ * Find info for the current window in buffer "buf".
+ * If not found, return the info for the most recently used window.
+ * Returns NULL when there isn't any info.
+ */
+    static wininfo_T *
+find_wininfo(buf)
+    buf_T	*buf;
+{
+    wininfo_T	*wip;
+
+    for (wip = buf->b_wininfo; wip != NULL; wip = wip->wi_next)
+	if (wip->wi_win == curwin)
+	    break;
+    if (wip == NULL)	/* if no fpos for curwin, use the first in the list */
+	wip = buf->b_wininfo;
+    return wip;
+}
+
+/*
+ * Reset the local window options to the values last used in this window.
+ * If the buffer wasn't used in this window before, use the values from
+ * the most recently used window.  If the values were never set, use the
+ * global values for the window.
+ */
+    void
+get_winopts(buf)
+    buf_T	*buf;
+{
+    wininfo_T	*wip;
+
+    clear_winopt(&curwin->w_onebuf_opt);
+#ifdef FEAT_FOLDING
+    clearFolding(curwin);
+#endif
+
+    wip = find_wininfo(buf);
+    if (wip != NULL && wip->wi_optset)
+    {
+	copy_winopt(&wip->wi_opt, &curwin->w_onebuf_opt);
+#ifdef FEAT_FOLDING
+	curwin->w_fold_manual = wip->wi_fold_manual;
+	curwin->w_foldinvalid = TRUE;
+	cloneFoldGrowArray(&wip->wi_folds, &curwin->w_folds);
+#endif
+    }
+    else
+	copy_winopt(&curwin->w_allbuf_opt, &curwin->w_onebuf_opt);
+
+#ifdef FEAT_FOLDING
+    /* Set 'foldlevel' to 'foldlevelstart' if it's not negative. */
+    if (p_fdls >= 0)
+	curwin->w_p_fdl = p_fdls;
+#endif
+}
+
+/*
+ * Find the position (lnum and col) for the buffer 'buf' for the current
+ * window.
+ * Returns a pointer to no_position if no position is found.
+ */
+    pos_T *
+buflist_findfpos(buf)
+    buf_T	*buf;
+{
+    wininfo_T	*wip;
+    static pos_T no_position = {1, 0};
+
+    wip = find_wininfo(buf);
+    if (wip != NULL)
+	return &(wip->wi_fpos);
+    else
+	return &no_position;
+}
+
+/*
+ * Find the lnum for the buffer 'buf' for the current window.
+ */
+    linenr_T
+buflist_findlnum(buf)
+    buf_T	*buf;
+{
+    return buflist_findfpos(buf)->lnum;
+}
+
+#if defined(FEAT_LISTCMDS) || defined(PROTO)
+/*
+ * List all know file names (for :files and :buffers command).
+ */
+/*ARGSUSED*/
+    void
+buflist_list(eap)
+    exarg_T	*eap;
+{
+    buf_T	*buf;
+    int		len;
+    int		i;
+
+    for (buf = firstbuf; buf != NULL && !got_int; buf = buf->b_next)
+    {
+	/* skip unlisted buffers, unless ! was used */
+	if (!buf->b_p_bl && !eap->forceit)
+	    continue;
+	msg_putchar('\n');
+	if (buf_spname(buf) != NULL)
+	    STRCPY(NameBuff, buf_spname(buf));
+	else
+	    home_replace(buf, buf->b_fname, NameBuff, MAXPATHL, TRUE);
+
+	sprintf((char *)IObuff, "%3d%c%c%c%c%c \"",
+		buf->b_fnum,
+		buf->b_p_bl ? ' ' : 'u',
+		buf == curbuf ? '%' :
+			(curwin->w_alt_fnum == buf->b_fnum ? '#' : ' '),
+		buf->b_ml.ml_mfp == NULL ? ' ' :
+			(buf->b_nwindows == 0 ? 'h' : 'a'),
+		!buf->b_p_ma ? '-' : (buf->b_p_ro ? '=' : ' '),
+		(buf->b_flags & BF_READERR) ? 'x'
+					    : (bufIsChanged(buf) ? '+' : ' ')
+		);
+
+	len = (int)STRLEN(IObuff);
+	STRNCPY(IObuff + len, NameBuff, IOSIZE - 20 - len);
+	IObuff[IOSIZE - 20 - len] = NUL;    /* make sure it's terminated */
+
+	len = (int)STRLEN(IObuff);
+	IObuff[len++] = '"';
+
+	/* put "line 999" in column 40 or after the file name */
+	IObuff[len] = NUL;
+	i = 40 - vim_strsize(IObuff);
+	do
+	{
+	    IObuff[len++] = ' ';
+	} while (--i > 0 && len < IOSIZE - 18);
+	sprintf((char *)IObuff + len, _("line %ld"),
+		buf == curbuf ? curwin->w_cursor.lnum :
+				(long)buflist_findlnum(buf));
+	msg_outtrans(IObuff);
+	out_flush();	    /* output one line at a time */
+	ui_breakcheck();
+    }
+}
+#endif
+
+/*
+ * Get file name and line number for file 'fnum'.
+ * Used by DoOneCmd() for translating '%' and '#'.
+ * Used by insert_reg() and cmdline_paste() for '#' register.
+ * Return FAIL if not found, OK for success.
+ */
+    int
+buflist_name_nr(fnum, fname, lnum)
+    int		fnum;
+    char_u	**fname;
+    linenr_T	*lnum;
+{
+    buf_T	*buf;
+
+    buf = buflist_findnr(fnum);
+    if (buf == NULL || buf->b_fname == NULL)
+	return FAIL;
+
+    *fname = buf->b_fname;
+    *lnum = buflist_findlnum(buf);
+
+    return OK;
+}
+
+/*
+ * Set the file name for "buf"' to 'ffname', short file name to 'sfname'.
+ * The file name with the full path is also remembered, for when :cd is used.
+ * Returns FAIL for failure (file name already in use by other buffer)
+ *	OK otherwise.
+ */
+    int
+setfname(buf, ffname, sfname, message)
+    buf_T	*buf;
+    char_u	*ffname, *sfname;
+    int		message;
+{
+    buf_T	*obuf;
+#ifdef UNIX
+    struct stat st;
+#endif
+
+    if (ffname == NULL || *ffname == NUL)
+    {
+	/* Removing the name. */
+	vim_free(buf->b_ffname);
+	vim_free(buf->b_sfname);
+	buf->b_ffname = NULL;
+	buf->b_sfname = NULL;
+#ifdef UNIX
+	st.st_dev = (dev_T)-1;
+#endif
+    }
+    else
+    {
+	fname_expand(buf, &ffname, &sfname); /* will allocate ffname */
+	if (ffname == NULL)		    /* out of memory */
+	    return FAIL;
+
+	/*
+	 * if the file name is already used in another buffer:
+	 * - if the buffer is loaded, fail
+	 * - if the buffer is not loaded, delete it from the list
+	 */
+#ifdef UNIX
+	if (mch_stat((char *)ffname, &st) < 0)
+	    st.st_dev = (dev_T)-1;
+	obuf = buflist_findname_stat(ffname, &st);
+#else
+	obuf = buflist_findname(ffname);
+#endif
+	if (obuf != NULL && obuf != buf)
+	{
+	    if (obuf->b_ml.ml_mfp != NULL)	/* it's loaded, fail */
+	    {
+		if (message)
+		    EMSG(_("E95: Buffer with this name already exists"));
+		vim_free(ffname);
+		return FAIL;
+	    }
+	    close_buffer(NULL, obuf, DOBUF_WIPE); /* delete from the list */
+	}
+	sfname = vim_strsave(sfname);
+	if (ffname == NULL || sfname == NULL)
+	{
+	    vim_free(sfname);
+	    vim_free(ffname);
+	    return FAIL;
+	}
+#ifdef USE_FNAME_CASE
+# ifdef USE_LONG_FNAME
+	if (USE_LONG_FNAME)
+# endif
+	    fname_case(sfname, 0);    /* set correct case for short file name */
+#endif
+	vim_free(buf->b_ffname);
+	vim_free(buf->b_sfname);
+	buf->b_ffname = ffname;
+	buf->b_sfname = sfname;
+    }
+    buf->b_fname = buf->b_sfname;
+#ifdef UNIX
+    if (st.st_dev == (dev_T)-1)
+	buf->b_dev = -1;
+    else
+    {
+	buf->b_dev = st.st_dev;
+	buf->b_ino = st.st_ino;
+    }
+#endif
+
+#ifndef SHORT_FNAME
+    buf->b_shortname = FALSE;
+#endif
+
+    buf_name_changed(buf);
+    return OK;
+}
+
+/*
+ * Take care of what needs to be done when the name of buffer "buf" has
+ * changed.
+ */
+    void
+buf_name_changed(buf)
+    buf_T	*buf;
+{
+    /*
+     * If the file name changed, also change the name of the swapfile
+     */
+    if (buf->b_ml.ml_mfp != NULL)
+	ml_setname(buf);
+
+    if (curwin->w_buffer == buf)
+	check_arg_idx(curwin);	/* check file name for arg list */
+#ifdef FEAT_TITLE
+    maketitle();		/* set window title */
+#endif
+#ifdef FEAT_WINDOWS
+    status_redraw_all();	/* status lines need to be redrawn */
+#endif
+    fmarks_check_names(buf);	/* check named file marks */
+    ml_timestamp(buf);		/* reset timestamp */
+}
+
+/*
+ * set alternate file name for current window
+ *
+ * Used by do_one_cmd(), do_write() and do_ecmd().
+ * Return the buffer.
+ */
+    buf_T *
+setaltfname(ffname, sfname, lnum)
+    char_u	*ffname;
+    char_u	*sfname;
+    linenr_T	lnum;
+{
+    buf_T	*buf;
+
+    /* Create a buffer.  'buflisted' is not set if it's a new buffer */
+    buf = buflist_new(ffname, sfname, lnum, 0);
+    if (buf != NULL)
+	curwin->w_alt_fnum = buf->b_fnum;
+    return buf;
+}
+
+/*
+ * Get alternate file name for current window.
+ * Return NULL if there isn't any, and give error message if requested.
+ */
+    char_u  *
+getaltfname(errmsg)
+    int		errmsg;		/* give error message */
+{
+    char_u	*fname;
+    linenr_T	dummy;
+
+    if (buflist_name_nr(0, &fname, &dummy) == FAIL)
+    {
+	if (errmsg)
+	    EMSG(_(e_noalt));
+	return NULL;
+    }
+    return fname;
+}
+
+/*
+ * Add a file name to the buflist and return its number.
+ * Uses same flags as buflist_new(), except BLN_DUMMY.
+ *
+ * used by qf_init(), main() and doarglist()
+ */
+    int
+buflist_add(fname, flags)
+    char_u	*fname;
+    int		flags;
+{
+    buf_T	*buf;
+
+    buf = buflist_new(fname, NULL, (linenr_T)0, flags);
+    if (buf != NULL)
+	return buf->b_fnum;
+    return 0;
+}
+
+#if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
+/*
+ * Adjust slashes in file names.  Called after 'shellslash' was set.
+ */
+    void
+buflist_slash_adjust()
+{
+    buf_T	*bp;
+
+    for (bp = firstbuf; bp != NULL; bp = bp->b_next)
+    {
+	if (bp->b_ffname != NULL)
+	    slash_adjust(bp->b_ffname);
+	if (bp->b_sfname != NULL)
+	    slash_adjust(bp->b_sfname);
+    }
+}
+#endif
+
+/*
+ * Set alternate cursor position for current window.
+ * Also save the local window option values.
+ */
+    void
+buflist_altfpos()
+{
+    buflist_setfpos(curbuf, curwin, curwin->w_cursor.lnum,
+						  curwin->w_cursor.col, TRUE);
+}
+
+/*
+ * Return TRUE if 'ffname' is not the same file as current file.
+ * Fname must have a full path (expanded by mch_FullName()).
+ */
+    int
+otherfile(ffname)
+    char_u	*ffname;
+{
+    return otherfile_buf(curbuf, ffname
+#ifdef UNIX
+	    , NULL
+#endif
+	    );
+}
+
+    static int
+otherfile_buf(buf, ffname
+#ifdef UNIX
+	, stp
+#endif
+	)
+    buf_T	*buf;
+    char_u	*ffname;
+#ifdef UNIX
+    struct stat	*stp;
+#endif
+{
+    /* no name is different */
+    if (ffname == NULL || *ffname == NUL || buf->b_ffname == NULL)
+	return TRUE;
+    if (fnamecmp(ffname, buf->b_ffname) == 0)
+	return FALSE;
+#ifdef UNIX
+    {
+	struct stat	st;
+
+	/* If no struct stat given, get it now */
+	if (stp == NULL)
+	{
+	    if (buf->b_dev < 0 || mch_stat((char *)ffname, &st) < 0)
+		st.st_dev = (dev_T)-1;
+	    stp = &st;
+	}
+	/* Use dev/ino to check if the files are the same, even when the names
+	 * are different (possible with links).  Still need to compare the
+	 * name above, for when the file doesn't exist yet.
+	 * Problem: The dev/ino changes when a file is deleted (and created
+	 * again) and remains the same when renamed/moved.  We don't want to
+	 * mch_stat() each buffer each time, that would be too slow.  Get the
+	 * dev/ino again when they appear to match, but not when they appear
+	 * to be different: Could skip a buffer when it's actually the same
+	 * file. */
+	if (buf_same_ino(buf, stp))
+	{
+	    buf_setino(buf);
+	    if (buf_same_ino(buf, stp))
+		return FALSE;
+	}
+    }
+#endif
+    return TRUE;
+}
+
+#if defined(UNIX) || defined(PROTO)
+/*
+ * Set inode and device number for a buffer.
+ * Must always be called when b_fname is changed!.
+ */
+    void
+buf_setino(buf)
+    buf_T	*buf;
+{
+    struct stat	st;
+
+    if (buf->b_fname != NULL && mch_stat((char *)buf->b_fname, &st) >= 0)
+    {
+	buf->b_dev = st.st_dev;
+	buf->b_ino = st.st_ino;
+    }
+    else
+	buf->b_dev = -1;
+}
+
+/*
+ * Return TRUE if dev/ino in buffer "buf" matches with "stp".
+ */
+    static int
+buf_same_ino(buf, stp)
+    buf_T	*buf;
+    struct stat *stp;
+{
+    return (buf->b_dev >= 0
+	    && stp->st_dev == buf->b_dev
+	    && stp->st_ino == buf->b_ino);
+}
+#endif
+
+    void
+fileinfo(fullname, shorthelp, dont_truncate)
+    int fullname;
+    int shorthelp;
+    int	dont_truncate;
+{
+    char_u	*name;
+    int		n;
+    char_u	*p;
+    char_u	*buffer;
+
+    buffer = alloc(IOSIZE);
+    if (buffer == NULL)
+	return;
+
+    if (fullname > 1)	    /* 2 CTRL-G: include buffer number */
+    {
+	sprintf((char *)buffer, "buf %d: ", curbuf->b_fnum);
+	p = buffer + STRLEN(buffer);
+    }
+    else
+	p = buffer;
+
+    *p++ = '"';
+    if (buf_spname(curbuf) != NULL)
+	STRCPY(p, buf_spname(curbuf));
+    else
+    {
+	if (!fullname && curbuf->b_fname != NULL)
+	    name = curbuf->b_fname;
+	else
+	    name = curbuf->b_ffname;
+	home_replace(shorthelp ? curbuf : NULL, name, p,
+					  (int)(IOSIZE - (p - buffer)), TRUE);
+    }
+
+    sprintf((char *)buffer + STRLEN(buffer),
+	    "\"%s%s%s%s%s%s",
+	    curbufIsChanged() ? (shortmess(SHM_MOD)
+					  ?  " [+]" : _(" [Modified]")) : " ",
+	    (curbuf->b_flags & BF_NOTEDITED)
+#ifdef FEAT_QUICKFIX
+		    && !bt_dontwrite(curbuf)
+#endif
+					? _("[Not edited]") : "",
+	    (curbuf->b_flags & BF_NEW)
+#ifdef FEAT_QUICKFIX
+		    && !bt_dontwrite(curbuf)
+#endif
+					? _("[New file]") : "",
+	    (curbuf->b_flags & BF_READERR) ? _("[Read errors]") : "",
+	    curbuf->b_p_ro ? (shortmess(SHM_RO) ? "[RO]"
+						      : _("[readonly]")) : "",
+	    (curbufIsChanged() || (curbuf->b_flags & BF_WRITE_MASK)
+							  || curbuf->b_p_ro) ?
+								    " " : "");
+    /* With 32 bit longs and more than 21,474,836 lines multiplying by 100
+     * causes an overflow, thus for large numbers divide instead. */
+    if (curwin->w_cursor.lnum > 1000000L)
+	n = (int)(((long)curwin->w_cursor.lnum) /
+				   ((long)curbuf->b_ml.ml_line_count / 100L));
+    else
+	n = (int)(((long)curwin->w_cursor.lnum * 100L) /
+					    (long)curbuf->b_ml.ml_line_count);
+    if (curbuf->b_ml.ml_flags & ML_EMPTY)
+    {
+	STRCPY(buffer + STRLEN(buffer), _(no_lines_msg));
+    }
+#ifdef FEAT_CMDL_INFO
+    else if (p_ru)
+    {
+	/* Current line and column are already on the screen -- webb */
+	if (curbuf->b_ml.ml_line_count == 1)
+	    sprintf((char *)buffer + STRLEN(buffer), _("1 line --%d%%--"), n);
+	else
+	    sprintf((char *)buffer + STRLEN(buffer), _("%ld lines --%d%%--"),
+					 (long)curbuf->b_ml.ml_line_count, n);
+    }
+#endif
+    else
+    {
+	sprintf((char *)buffer + STRLEN(buffer),
+		_("line %ld of %ld --%d%%-- col "),
+		(long)curwin->w_cursor.lnum,
+		(long)curbuf->b_ml.ml_line_count,
+		n);
+	validate_virtcol();
+	col_print(buffer + STRLEN(buffer),
+		   (int)curwin->w_cursor.col + 1, (int)curwin->w_virtcol + 1);
+    }
+
+    (void)append_arg_number(curwin, buffer, !shortmess(SHM_FILE), IOSIZE);
+
+    if (dont_truncate)
+    {
+	/* Temporarily set msg_scroll to avoid the message being truncated.
+	 * First call msg_start() to get the message in the right place. */
+	msg_start();
+	n = msg_scroll;
+	msg_scroll = TRUE;
+	msg(buffer);
+	msg_scroll = n;
+    }
+    else
+    {
+	p = msg_trunc_attr(buffer, FALSE, 0);
+	if (restart_edit != 0 || (msg_scrolled && !need_wait_return))
+	{
+	    /* Need to repeat the message after redrawing when:
+	     * - When restart_edit is set (otherwise there will be a delay
+	     *   before redrawing).
+	     * - When the screen was scrolled but there is no wait-return
+	     *   prompt. */
+	    set_keep_msg(p);
+	    keep_msg_attr = 0;
+	}
+    }
+
+    vim_free(buffer);
+}
+
+    void
+col_print(buf, col, vcol)
+    char_u  *buf;
+    int	    col;
+    int	    vcol;
+{
+    if (col == vcol)
+	sprintf((char *)buf, "%d", col);
+    else
+	sprintf((char *)buf, "%d-%d", col, vcol);
+}
+
+#if defined(FEAT_TITLE) || defined(PROTO)
+/*
+ * put file name in title bar of window and in icon title
+ */
+
+static char_u *lasttitle = NULL;
+static char_u *lasticon = NULL;
+
+    void
+maketitle()
+{
+    char_u	*p;
+    char_u	*t_str = NULL;
+    char_u	*i_name;
+    char_u	*i_str = NULL;
+    int		maxlen = 0;
+    int		len;
+    int		mustset;
+    char_u	buf[IOSIZE];
+    int		off;
+
+    if (!redrawing())
+    {
+	/* Postpone updating the title when 'lazyredraw' is set. */
+	need_maketitle = TRUE;
+	return;
+    }
+
+    need_maketitle = FALSE;
+    if (!p_title && !p_icon)
+	return;
+
+    if (p_title)
+    {
+	if (p_titlelen > 0)
+	{
+	    maxlen = p_titlelen * Columns / 100;
+	    if (maxlen < 10)
+		maxlen = 10;
+	}
+
+	t_str = buf;
+	if (*p_titlestring != NUL)
+	{
+#ifdef FEAT_STL_OPT
+	    if (stl_syntax & STL_IN_TITLE)
+		build_stl_str_hl(curwin, t_str, sizeof(buf),
+					      p_titlestring, 0, maxlen, NULL);
+	    else
+#endif
+		t_str = p_titlestring;
+	}
+	else
+	{
+	    /* format: "fname + (path) (1 of 2) - VIM" */
+
+	    if (curbuf->b_fname == NULL)
+		STRCPY(buf, _("[No file]"));
+	    else
+	    {
+		p = transstr(gettail(curbuf->b_fname));
+		STRNCPY(buf, p, IOSIZE - 100);
+		vim_free(p);
+		buf[IOSIZE - 100] = NUL; /* in case it was too long */
+	    }
+
+	    switch (bufIsChanged(curbuf)
+		    + (curbuf->b_p_ro * 2)
+		    + (!curbuf->b_p_ma * 4))
+	    {
+		case 1: STRCAT(buf, " +"); break;
+		case 2: STRCAT(buf, " ="); break;
+		case 3: STRCAT(buf, " =+"); break;
+		case 4:
+		case 6: STRCAT(buf, " -"); break;
+		case 5:
+		case 7: STRCAT(buf, " -+"); break;
+	    }
+
+	    if (curbuf->b_fname != NULL)
+	    {
+		/* Get path of file, replace home dir with ~ */
+		off = (int)STRLEN(buf);
+		buf[off++] = ' ';
+		buf[off++] = '(';
+		home_replace(curbuf, curbuf->b_ffname,
+					       buf + off, IOSIZE - off, TRUE);
+#ifdef BACKSLASH_IN_FILENAME
+		/* avoid "c:/name" to be reduced to "c" */
+		if (isalpha(buf[off]) && buf[off + 1] == ':')
+		    off += 2;
+#endif
+		/* remove the file name */
+		p = gettail(buf + off);
+		if (p == buf + off)
+		{
+		    /* must be a help buffer */
+		    STRCPY(buf + off, _("help"));
+		}
+		else
+		{
+		    while (p > buf + off + 1 && vim_ispathsep(p[-1]))
+			--p;
+#ifdef VMS
+		    /* path separator is part of the path */
+		    ++p;
+#endif
+		    *p = NUL;
+		}
+		/* translate unprintable chars */
+		p = transstr(buf + off);
+		STRNCPY(buf + off, p, IOSIZE - off);
+		vim_free(p);
+		buf[IOSIZE - 1] = NUL;  /* in case it was too long */
+		STRCAT(buf, ")");
+	    }
+
+	    append_arg_number(curwin, buf, FALSE, IOSIZE);
+
+#if defined(FEAT_CLIENTSERVER)
+	    if (serverName != NULL)
+	    {
+		STRCAT(buf, " - ");
+		STRCAT(buf, serverName);
+	    }
+	    else
+#endif
+		STRCAT(buf, " - VIM");
+
+	    if (maxlen > 0)
+	    {
+		/* make it shorter by removing a bit in the middle */
+		len = vim_strsize(buf);
+		if (len > maxlen)
+		    trunc_string(buf, buf, maxlen);
+	    }
+	}
+    }
+    mustset = ti_change(t_str, &lasttitle);
+
+    if (p_icon)
+    {
+	i_str = buf;
+	if (*p_iconstring != NUL)
+	{
+#ifdef FEAT_STL_OPT
+	    if (stl_syntax & STL_IN_ICON)
+		build_stl_str_hl(curwin, i_str, sizeof(buf),
+						    p_iconstring, 0, 0, NULL);
+	    else
+#endif
+		i_str = p_iconstring;
+	}
+	else
+	{
+	    if (buf_spname(curbuf) != NULL)
+		i_name = (char_u *)buf_spname(curbuf);
+	    else		    /* use file name only in icon */
+		i_name = gettail(curbuf->b_ffname);
+	    *i_str = NUL;
+	    /* Truncate name at 100 bytes. */
+	    len = STRLEN(i_name);
+	    if (len > 100)
+	    {
+		len -= 100;
+#ifdef FEAT_MBYTE
+		if (has_mbyte)
+		    len += (*mb_tail_off)(i_name, i_name + len) + 1;
+#endif
+		i_name += len;
+	    }
+	    STRCPY(i_str, i_name);
+	    trans_characters(i_str, IOSIZE);
+	}
+    }
+
+    mustset |= ti_change(i_str, &lasticon);
+
+    if (mustset)
+	resettitle();
+}
+
+/*
+ * Used for title and icon: Check if "str" differs from "*last".  Set "*last"
+ * from "str" if it does.
+ * Return TRUE when "*last" changed.
+ */
+    static int
+ti_change(str, last)
+    char_u	*str;
+    char_u	**last;
+{
+    if ((str == NULL) != (*last == NULL)
+	    || (str != NULL && *last != NULL && STRCMP(str, *last) != 0))
+    {
+	vim_free(*last);
+	if (str == NULL)
+	    *last = NULL;
+	else
+	    *last = vim_strsave(str);
+	return TRUE;
+    }
+    return FALSE;
+}
+
+/*
+ * Put current window title back (used after calling a shell)
+ */
+    void
+resettitle()
+{
+    mch_settitle(lasttitle, lasticon);
+}
+#endif /* FEAT_TITLE */
+
+#if defined(FEAT_STL_OPT) || defined(PROTO)
+/*
+ * Build a string from the status line items in fmt.
+ * Return length of string in screen cells.
+ *
+ * Items are drawn interspersed with the text that surrounds it
+ * Specials: %-<wid>(xxx%) => group, %= => middle marker, %< => truncation
+ * Item: %-<minwid>.<maxwid><itemch> All but <itemch> are optional
+ *
+ * If maxwidth is not zero, the string will be filled at any middle marker
+ * or truncated if too long, fillchar is used for all whitespace.
+ */
+    int
+build_stl_str_hl(wp, out, outlen, fmt, fillchar, maxwidth, hl)
+    win_T	*wp;
+    char_u	*out;		/* buffer to write into */
+    size_t	outlen;		/* length of out[] */
+    char_u	*fmt;
+    int		fillchar;
+    int		maxwidth;
+    struct stl_hlrec *hl;
+{
+    char_u	*p;
+    char_u	*s;
+    char_u	*t;
+    char_u	*linecont;
+#ifdef FEAT_EVAL
+    win_T	*o_curwin;
+    buf_T	*o_curbuf;
+#endif
+    int		empty_line;
+    colnr_T	virtcol;
+    long	l;
+    long	n;
+    int		prevchar_isflag;
+    int		prevchar_isitem;
+    int		itemisflag;
+    int		fillable;
+    char_u	*str;
+    long	num;
+    int		width;
+    int		itemcnt;
+    int		curitem;
+    int		groupitem[STL_MAX_ITEM];
+    int		groupdepth;
+    struct stl_item
+    {
+	char_u		*start;
+	int		minwid;
+	int		maxwid;
+	enum
+	{
+	    Normal,
+	    Empty,
+	    Group,
+	    Middle,
+	    Highlight,
+	    Trunc
+	}		type;
+    }		item[STL_MAX_ITEM];
+    int		minwid;
+    int		maxwid;
+    int		zeropad;
+    char_u	base;
+    char_u	opt;
+#define TMPLEN 70
+    char_u	tmp[TMPLEN];
+
+    if (fillchar == 0)
+	fillchar = ' ';
+    /*
+     * Get line & check if empty (cursorpos will show "0-1").
+     * If inversion is possible we use it. Else '=' characters are used.
+     */
+    linecont = ml_get_buf(wp->w_buffer, wp->w_cursor.lnum, FALSE);
+    empty_line = (*linecont == NUL);
+
+    groupdepth = 0;
+    p = out;
+    curitem = 0;
+    prevchar_isflag = TRUE;
+    prevchar_isitem = FALSE;
+    for (s = fmt; *s;)
+    {
+	if (*s != NUL && *s != '%')
+	    prevchar_isflag = prevchar_isitem = FALSE;
+
+	/*
+	 * Handle up to the next '%' or the end.
+	 */
+	while (*s != NUL && *s != '%' && p + 1 < out + outlen)
+	    *p++ = *s++;
+	if (*s == NUL || p + 1 >= out + outlen)
+	    break;
+
+	/*
+	 * Handle one '%' item.
+	 */
+	s++;
+	if (*s == '%')
+	{
+	    if (p + 1 >= out + outlen)
+		break;
+	    *p++ = *s++;
+	    prevchar_isflag = prevchar_isitem = FALSE;
+	    continue;
+	}
+	if (*s == STL_MIDDLEMARK)
+	{
+	    s++;
+	    if (groupdepth > 0)
+		continue;
+	    item[curitem].type = Middle;
+	    item[curitem++].start = p;
+	    continue;
+	}
+	if (*s == STL_TRUNCMARK)
+	{
+	    s++;
+	    item[curitem].type = Trunc;
+	    item[curitem++].start = p;
+	    continue;
+	}
+	if (*s == ')')
+	{
+	    s++;
+	    if (groupdepth < 1)
+		continue;
+	    groupdepth--;
+
+	    t = item[groupitem[groupdepth]].start;
+	    *p = NUL;
+	    l = vim_strsize(t);
+	    if (curitem > groupitem[groupdepth] + 1
+		    && item[groupitem[groupdepth]].minwid == 0)
+	    {
+		/* remove group if all items are empty */
+		for (n = groupitem[groupdepth] + 1; n < curitem; n++)
+		    if (item[n].type == Normal)
+			break;
+		if (n == curitem)
+		{
+		    p = t;
+		    l = 0;
+		}
+	    }
+	    if (l > item[groupitem[groupdepth]].maxwid)
+	    {
+		/* truncate, remove n bytes of text at the start */
+#ifdef FEAT_MBYTE
+		if (has_mbyte)
+		{
+		    /* Find the first character that should be included. */
+		    n = 0;
+		    while (l >= item[groupitem[groupdepth]].maxwid)
+		    {
+			l -= ptr2cells(t + n);
+			n += (*mb_ptr2len_check)(t + n);
+		    }
+		}
+		else
+#endif
+		    n = (p - t) - item[groupitem[groupdepth]].maxwid + 1;
+
+		*t = '<';
+		mch_memmove(t + 1, t + n, p - (t + n));
+		p = p - n + 1;
+#ifdef FEAT_MBYTE
+		/* Fill up space left over by half a double-wide char. */
+		while (++l < item[groupitem[groupdepth]].minwid)
+		    *p++ = fillchar;
+#endif
+
+		/* correct the start of the items for the truncation */
+		for (l = groupitem[groupdepth] + 1; l < curitem; l++)
+		{
+		    item[l].start -= n;
+		    if (item[l].start < t)
+			item[l].start = t;
+		}
+	    }
+	    else if (abs(item[groupitem[groupdepth]].minwid) > l)
+	    {
+		/* fill */
+		n = item[groupitem[groupdepth]].minwid;
+		if (n < 0)
+		{
+		    /* fill by appending characters */
+		    n = 0 - n;
+		    while (l++ < n && p + 1 < out + outlen)
+			*p++ = fillchar;
+		}
+		else
+		{
+		    /* fill by inserting characters */
+		    mch_memmove(t + n - l, t, p - t);
+		    l = n - l;
+		    if (p + l >= out + outlen)
+			l = (out + outlen) - p - 1;
+		    p += l;
+		    for (n = groupitem[groupdepth] + 1; n < curitem; n++)
+			item[n].start += l;
+		    for ( ; l > 0; l--)
+			*t++ = fillchar;
+		}
+	    }
+	    continue;
+	}
+	minwid = 0;
+	maxwid = 9999;
+	zeropad = FALSE;
+	l = 1;
+	if (*s == '0')
+	{
+	    s++;
+	    zeropad = TRUE;
+	}
+	if (*s == '-')
+	{
+	    s++;
+	    l = -1;
+	}
+	if (VIM_ISDIGIT(*s))
+	{
+	    minwid = (int)getdigits(&s);
+	    if (minwid < 0)	/* overflow */
+		minwid = 0;
+	}
+	if (*s == STL_HIGHLIGHT)
+	{
+	    item[curitem].type = Highlight;
+	    item[curitem].start = p;
+	    item[curitem].minwid = minwid > 9 ? 1 : minwid;
+	    s++;
+	    curitem++;
+	    continue;
+	}
+	if (*s == '.')
+	{
+	    s++;
+	    if (VIM_ISDIGIT(*s))
+	    {
+		maxwid = (int)getdigits(&s);
+		if (maxwid <= 0)	/* overflow */
+		    maxwid = 50;
+	    }
+	}
+	minwid = (minwid > 50 ? 50 : minwid) * l;
+	if (*s == '(')
+	{
+	    groupitem[groupdepth++] = curitem;
+	    item[curitem].type = Group;
+	    item[curitem].start = p;
+	    item[curitem].minwid = minwid;
+	    item[curitem].maxwid = maxwid;
+	    s++;
+	    curitem++;
+	    continue;
+	}
+	if (vim_strchr(STL_ALL, *s) == NULL)
+	{
+	    s++;
+	    continue;
+	}
+	opt = *s++;
+
+	/* OK - now for the real work */
+	base = 'D';
+	itemisflag = FALSE;
+	fillable = TRUE;
+	num = -1;
+	str = NULL;
+	switch (opt)
+	{
+	case STL_FILEPATH:
+	case STL_FULLPATH:
+	case STL_FILENAME:
+	    fillable = FALSE;	/* don't change ' ' to fillchar */
+	    if (buf_spname(wp->w_buffer) != NULL)
+		STRCPY(NameBuff, buf_spname(wp->w_buffer));
+	    else
+	    {
+		t = (opt == STL_FULLPATH) ? wp->w_buffer->b_ffname
+					: wp->w_buffer->b_fname;
+		home_replace(wp->w_buffer, t, NameBuff, MAXPATHL, TRUE);
+	    }
+	    trans_characters(NameBuff, MAXPATHL);
+	    if (opt != STL_FILENAME)
+		str = NameBuff;
+	    else
+		str = gettail(NameBuff);
+	    break;
+
+	case STL_VIM_EXPR: /* '{' */
+	    itemisflag = TRUE;
+	    t = p;
+	    while (*s != '}' && *s != NUL && p + 1 < out + outlen)
+		*p++ = *s++;
+	    if (*s != '}')	/* missing '}' or out of space */
+		break;
+	    s++;
+	    *p = 0;
+	    p = t;
+
+#ifdef FEAT_EVAL
+	    sprintf((char *)tmp, "%d", curbuf->b_fnum);
+	    set_internal_string_var((char_u *)"actual_curbuf", tmp);
+
+	    o_curbuf = curbuf;
+	    o_curwin = curwin;
+	    curwin = wp;
+	    curbuf = wp->w_buffer;
+
+	    str = eval_to_string_safe(p, &t);
+
+	    curwin = o_curwin;
+	    curbuf = o_curbuf;
+	    do_unlet((char_u *)"g:actual_curbuf");
+
+	    if (str != NULL && *str != 0)
+	    {
+		if (*skipdigits(str) == NUL)
+		{
+		    num = atoi((char *)str);
+		    vim_free(str);
+		    str = NULL;
+		    itemisflag = FALSE;
+		}
+	    }
+#endif
+	    break;
+
+	case STL_LINE:
+	    num = (wp->w_buffer->b_ml.ml_flags & ML_EMPTY)
+		  ? 0L : (long)(wp->w_cursor.lnum);
+	    break;
+
+	case STL_NUMLINES:
+	    num = wp->w_buffer->b_ml.ml_line_count;
+	    break;
+
+	case STL_COLUMN:
+	    num = !(State & INSERT) && empty_line
+		  ? 0 : (int)wp->w_cursor.col + 1;
+	    break;
+
+	case STL_VIRTCOL:
+	case STL_VIRTCOL_ALT:
+	    /* In list mode virtcol needs to be recomputed */
+	    virtcol = wp->w_virtcol;
+	    if (wp->w_p_list && lcs_tab1 == NUL)
+	    {
+		wp->w_p_list = FALSE;
+		getvcol(wp, &wp->w_cursor, NULL, &virtcol, NULL);
+		wp->w_p_list = TRUE;
+	    }
+	    ++virtcol;
+	    /* Don't display %V if it's the same as %c. */
+	    if (opt == STL_VIRTCOL_ALT
+		    && (virtcol == (colnr_T)(!(State & INSERT) && empty_line
+			    ? 0 : (int)wp->w_cursor.col + 1)))
+		break;
+	    num = (long)virtcol;
+	    break;
+
+	case STL_PERCENTAGE:
+	    num = (int)(((long)wp->w_cursor.lnum * 100L) /
+			(long)wp->w_buffer->b_ml.ml_line_count);
+	    break;
+
+	case STL_ALTPERCENT:
+	    str = tmp;
+	    get_rel_pos(wp, str);
+	    break;
+
+	case STL_ARGLISTSTAT:
+	    fillable = FALSE;
+	    tmp[0] = 0;
+	    if (append_arg_number(wp, tmp, FALSE, (int)sizeof(tmp)))
+		str = tmp;
+	    break;
+
+	case STL_KEYMAP:
+	    fillable = FALSE;
+	    if (get_keymap_str(wp, tmp, TMPLEN))
+		str = tmp;
+	    break;
+	case STL_PAGENUM:
+#ifdef FEAT_PRINTER
+	    num = get_printer_page_num();
+#else
+	    num = 0;
+#endif
+	    break;
+
+	case STL_BUFNO:
+	    num = wp->w_buffer->b_fnum;
+	    break;
+
+	case STL_OFFSET_X:
+	    base = 'X';
+	case STL_OFFSET:
+#ifdef FEAT_BYTEOFF
+	    l = ml_find_line_or_offset(wp->w_buffer, wp->w_cursor.lnum, NULL);
+	    num = (wp->w_buffer->b_ml.ml_flags & ML_EMPTY) || l < 0 ?
+		  0L : l + 1 + (!(State & INSERT) && empty_line ?
+				0 : (int)wp->w_cursor.col);
+#endif
+	    break;
+
+	case STL_BYTEVAL_X:
+	    base = 'X';
+	case STL_BYTEVAL:
+	    if (((State & INSERT) && wp == curwin) || empty_line)
+		num = 0;
+	    else
+	    {
+#ifdef FEAT_MBYTE
+		num = (*mb_ptr2char)(linecont + wp->w_cursor.col);
+#else
+		num = linecont[wp->w_cursor.col];
+#endif
+	    }
+	    if (num == NL)
+		num = 0;
+	    else if (num == CAR && get_fileformat(wp->w_buffer) == EOL_MAC)
+		num = NL;
+	    break;
+
+	case STL_ROFLAG:
+	case STL_ROFLAG_ALT:
+	    itemisflag = TRUE;
+	    if (wp->w_buffer->b_p_ro)
+		str = (char_u *)((opt == STL_ROFLAG_ALT) ? ",RO" : "[RO]");
+	    break;
+
+	case STL_HELPFLAG:
+	case STL_HELPFLAG_ALT:
+	    itemisflag = TRUE;
+	    if (wp->w_buffer->b_help)
+		str = (char_u *)((opt == STL_HELPFLAG_ALT) ? ",HLP"
+							       : _("[help]"));
+	    break;
+
+#ifdef FEAT_AUTOCMD
+	case STL_FILETYPE:
+	    if (*wp->w_buffer->b_p_ft != NUL
+		    && STRLEN(wp->w_buffer->b_p_ft) < TMPLEN - 3)
+	    {
+		sprintf((char *)tmp, "[%s]", wp->w_buffer->b_p_ft);
+		str = tmp;
+	    }
+	    break;
+
+	case STL_FILETYPE_ALT:
+	    itemisflag = TRUE;
+	    if (*wp->w_buffer->b_p_ft != NUL
+		    && STRLEN(wp->w_buffer->b_p_ft) < TMPLEN - 2)
+	    {
+		sprintf((char *)tmp, ",%s", wp->w_buffer->b_p_ft);
+		for (t = tmp; *t != 0; t++)
+		    *t = TOUPPER_LOC(*t);
+		str = tmp;
+	    }
+	    break;
+#endif
+
+#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
+	case STL_PREVIEWFLAG:
+	case STL_PREVIEWFLAG_ALT:
+	    itemisflag = TRUE;
+	    if (wp->w_p_pvw)
+		str = (char_u *)((opt == STL_PREVIEWFLAG_ALT) ? ",PRV"
+							    : _("[Preview]"));
+	    break;
+#endif
+
+	case STL_MODIFIED:
+	case STL_MODIFIED_ALT:
+	    itemisflag = TRUE;
+	    switch ((opt == STL_MODIFIED_ALT)
+		    + bufIsChanged(wp->w_buffer) * 2
+		    + (!wp->w_buffer->b_p_ma) * 4)
+	    {
+		case 2: str = (char_u *)"[+]"; break;
+		case 3: str = (char_u *)",+"; break;
+		case 4: str = (char_u *)"[-]"; break;
+		case 5: str = (char_u *)",-"; break;
+		case 6: str = (char_u *)"[+-]"; break;
+		case 7: str = (char_u *)",+-"; break;
+	    }
+	    break;
+	}
+
+	item[curitem].start = p;
+	item[curitem].type = Normal;
+	if (str != NULL && *str)
+	{
+	    t = str;
+	    if (itemisflag)
+	    {
+		if ((t[0] && t[1])
+			&& ((!prevchar_isitem && *t == ',')
+			      || (prevchar_isflag && *t == ' ')))
+		    t++;
+		prevchar_isflag = TRUE;
+	    }
+	    l = vim_strsize(t);
+	    if (l > 0)
+		prevchar_isitem = TRUE;
+	    if (l > maxwid)
+	    {
+		while (l >= maxwid)
+#ifdef FEAT_MBYTE
+		    if (has_mbyte)
+		    {
+			l -= ptr2cells(t);
+			t += (*mb_ptr2len_check)(t);
+		    }
+		    else
+#endif
+			l -= byte2cells(*t++);
+		if (p + 1 >= out + outlen)
+		    break;
+		*p++ = '<';
+	    }
+	    if (minwid > 0)
+	    {
+		for (; l < minwid && p + 1 < out + outlen; l++)
+		{
+		    /* Don't put a "-" in front of a digit. */
+		    if (l + 1 == minwid && fillchar == '-' && VIM_ISDIGIT(*t))
+			*p++ = ' ';
+		    else
+			*p++ = fillchar;
+		}
+		minwid = 0;
+	    }
+	    else
+		minwid *= -1;
+	    while (*t && p + 1 < out + outlen)
+	    {
+		*p++ = *t++;
+		/* Change a space by fillchar, unless fillchar is '-' and a
+		 * digit follows. */
+		if (fillable && p[-1] == ' '
+				     && (!VIM_ISDIGIT(*t) || fillchar != '-'))
+		    p[-1] = fillchar;
+	    }
+	    for (; l < minwid && p + 1 < out + outlen; l++)
+		*p++ = fillchar;
+	}
+	else if (num >= 0)
+	{
+	    int nbase = (base == 'D' ? 10 : (base == 'O' ? 8 : 16));
+	    char_u nstr[20];
+
+	    if (p + 20 >= out + outlen)
+		break;		/* not sufficient space */
+	    prevchar_isitem = TRUE;
+	    t = nstr;
+	    if (opt == STL_VIRTCOL_ALT)
+	    {
+		*t++ = '-';
+		minwid--;
+	    }
+	    *t++ = '%';
+	    if (zeropad)
+		*t++ = '0';
+	    *t++ = '*';
+	    *t++ = nbase == 16 ? base : (nbase == 8 ? 'o' : 'd');
+	    *t = 0;
+
+	    for (n = num, l = 1; n >= nbase; n /= nbase)
+		l++;
+	    if (opt == STL_VIRTCOL_ALT)
+		l++;
+	    if (l > maxwid)
+	    {
+		l += 2;
+		n = l - maxwid;
+		while (l-- > maxwid)
+		    num /= nbase;
+		*t++ = '>';
+		*t++ = '%';
+		*t = t[-3];
+		*++t = 0;
+		sprintf((char *)p, (char *)nstr, 0, num, n);
+	    }
+	    else
+		sprintf((char *)p, (char *)nstr, minwid, num);
+	    p += STRLEN(p);
+	}
+	else
+	    item[curitem].type = Empty;
+
+	if (opt == STL_VIM_EXPR)
+	    vim_free(str);
+
+	if (num >= 0 || (!itemisflag && str && *str))
+	    prevchar_isflag = FALSE;	    /* Item not NULL, but not a flag */
+	curitem++;
+    }
+    *p = NUL;
+    itemcnt = curitem;
+
+    width = vim_strsize(out);
+    if (maxwidth > 0 && width > maxwidth)
+    {
+	/* Result is too long, must trunctate somewhere. */
+	l = 0;
+	if (itemcnt == 0)
+	    s = out;
+	else
+	{
+	    for ( ; l < itemcnt; l++)
+		if (item[l].type == Trunc)
+		{
+		    /* Truncate at %< item. */
+		    s = item[l].start;
+		    break;
+		}
+	    if (l == itemcnt)
+	    {
+		/* No %< item, truncate first item. */
+		s = item[0].start;
+		l = 0;
+	    }
+	}
+
+	if (width - vim_strsize(s) >= maxwidth)
+	{
+	    /* Truncation mark is beyond max length */
+#ifdef FEAT_MBYTE
+	    if (has_mbyte)
+	    {
+		s = out;
+		width = 0;
+		for (;;)
+		{
+		    width += ptr2cells(s);
+		    if (width >= maxwidth)
+			break;
+		    s += (*mb_ptr2len_check)(s);
+		}
+		/* Fill up for half a double-wide character. */
+		while (++width < maxwidth)
+		    *s++ = fillchar;
+	    }
+	    else
+#endif
+		s = out + maxwidth - 1;
+	    for (l = 0; l < itemcnt; l++)
+		if (item[l].start > s)
+		    break;
+	    itemcnt = l;
+	    *s++ = '>';
+	    *s = 0;
+	}
+	else
+	{
+#ifdef FEAT_MBYTE
+	    if (has_mbyte)
+	    {
+		n = 0;
+		while (width >= maxwidth)
+		{
+		    width -= ptr2cells(s + n);
+		    n += (*mb_ptr2len_check)(s + n);
+		}
+	    }
+	    else
+#endif
+		n = width - maxwidth + 1;
+	    p = s + n;
+	    mch_memmove(s + 1, p, STRLEN(p) + 1);
+	    *s = '<';
+
+	    /* Fill up for half a double-wide character. */
+	    while (++width < maxwidth)
+	    {
+		s = s + STRLEN(s);
+		*s++ = fillchar;
+		*s = NUL;
+	    }
+
+	    --n;	/* count the '<' */
+	    for (; l < itemcnt; l++)
+	    {
+		if (item[l].start - n >= s)
+		    item[l].start -= n;
+		else
+		    item[l].start = s;
+	    }
+	}
+	width = maxwidth;
+    }
+    else if (width < maxwidth && STRLEN(out) + maxwidth - width + 1 < outlen)
+    {
+	/* Apply STL_MIDDLE if any */
+	for (l = 0; l < itemcnt; l++)
+	    if (item[l].type == Middle)
+		break;
+	if (l < itemcnt)
+	{
+	    p = item[l].start + maxwidth - width;
+	    mch_memmove(p, item[l].start, STRLEN(item[l].start) + 1);
+	    for (s = item[l].start; s < p; s++)
+		*s = fillchar;
+	    for (l++; l < itemcnt; l++)
+		item[l].start += maxwidth - width;
+	    width = maxwidth;
+	}
+    }
+
+    if (hl != NULL)
+    {
+	for (l = 0; l < itemcnt; l++)
+	{
+	    if (item[l].type == Highlight)
+	    {
+		hl->start = item[l].start;
+		hl->userhl = item[l].minwid;
+		hl++;
+	    }
+	}
+	hl->start = NULL;
+	hl->userhl = 0;
+    }
+
+    return width;
+}
+#endif /* FEAT_STL_OPT */
+
+#if defined(FEAT_STL_OPT) || defined(FEAT_CMDL_INFO) || defined(PROTO)
+/*
+ * Get relative cursor position in window, in the form 99%, using "Top", "Bot"
+ * or "All" when appropriate.
+ */
+    void
+get_rel_pos(wp, str)
+    win_T	*wp;
+    char_u	*str;
+{
+    long	above; /* number of lines above window */
+    long	below; /* number of lines below window */
+
+    above = wp->w_topline - 1;
+#ifdef FEAT_DIFF
+    above += diff_check_fill(wp, wp->w_topline) - wp->w_topfill;
+#endif
+    below = wp->w_buffer->b_ml.ml_line_count - wp->w_botline + 1;
+    if (below <= 0)
+	STRCPY(str, above == 0 ? _("All") : _("Bot"));
+    else if (above <= 0)
+	STRCPY(str, _("Top"));
+    else
+	sprintf((char *)str, "%2d%%", above > 1000000L
+				    ? (int)(above / ((above + below) / 100L))
+				    : (int)(above * 100L / (above + below)));
+}
+#endif
+
+/*
+ * Append (file 2 of 8) to 'buf', if editing more than one file.
+ * Return TRUE if it was appended.
+ */
+    int
+append_arg_number(wp, buf, add_file, maxlen)
+    win_T	*wp;
+    char_u	*buf;
+    int		add_file;	/* Add "file" before the arg number */
+    int		maxlen;		/* maximum nr of chars in buf or zero*/
+{
+    char_u	*p;
+
+    if (ARGCOUNT <= 1)		/* nothing to do */
+	return FALSE;
+
+    p = buf + STRLEN(buf);		/* go to the end of the buffer */
+    if (maxlen && p - buf + 35 >= maxlen) /* getting too long */
+	return FALSE;
+    *p++ = ' ';
+    *p++ = '(';
+    if (add_file)
+    {
+	STRCPY(p, "file ");
+	p += 5;
+    }
+    sprintf((char *)p, wp->w_arg_idx_invalid ? "(%d) of %d)"
+				  : "%d of %d)", wp->w_arg_idx + 1, ARGCOUNT);
+    return TRUE;
+}
+
+/*
+ * If fname is not a full path, make it a full path.
+ * Returns pointer to allocated memory (NULL for failure).
+ */
+    char_u  *
+fix_fname(fname)
+    char_u  *fname;
+{
+    /*
+     * Force expanding the path always for Unix, because symbolic links may
+     * mess up the full path name, even though it starts with a '/'.
+     * Also expand when there is ".." in the file name, try to remove it,
+     * because "c:/src/../README" is equal to "c:/README".
+     * For MS-Windows also expand names like "longna~1" to "longname".
+     */
+#ifdef UNIX
+    return FullName_save(fname, TRUE);
+#else
+    if (!vim_isAbsName(fname) || strstr((char *)fname, "..") != NULL
+#if defined(MSWIN) || defined(DJGPP)
+	    || vim_strchr(fname, '~') != NULL
+#endif
+	    )
+	return FullName_save(fname, FALSE);
+
+    fname = vim_strsave(fname);
+
+#ifdef USE_FNAME_CASE
+# ifdef USE_LONG_FNAME
+    if (USE_LONG_FNAME)
+# endif
+    {
+	if (fname != NULL)
+	    fname_case(fname, 0);	/* set correct case for file name */
+    }
+#endif
+
+    return fname;
+#endif
+}
+
+/*
+ * Make "ffname" a full file name, set "sfname" to "ffname" if not NULL.
+ * "ffname" becomes a pointer to allocated memory (or NULL).
+ */
+/*ARGSUSED*/
+    void
+fname_expand(buf, ffname, sfname)
+    buf_T	*buf;
+    char_u	**ffname;
+    char_u	**sfname;
+{
+    if (*ffname == NULL)	/* if no file name given, nothing to do */
+	return;
+    if (*sfname == NULL)	/* if no short file name given, use ffname */
+	*sfname = *ffname;
+    *ffname = fix_fname(*ffname);   /* expand to full path */
+
+#ifdef FEAT_SHORTCUT
+    if (!buf->b_p_bin)
+    {
+	char_u  *rfname = NULL;
+
+	/* If the file name is a shortcut file, use the file it links to. */
+	rfname = mch_resolve_shortcut(*ffname);
+	if (rfname)
+	{
+	    vim_free(*ffname);
+	    *ffname = rfname;
+	    *sfname = rfname;
+	}
+    }
+#endif
+}
+
+/*
+ * Get the file name for an argument list entry.
+ */
+    char_u *
+alist_name(aep)
+    aentry_T	*aep;
+{
+    buf_T	*bp;
+
+    /* Use the name from the associated buffer if it exists. */
+    bp = buflist_findnr(aep->ae_fnum);
+    if (bp == NULL)
+	return aep->ae_fname;
+    return bp->b_fname;
+}
+
+#if defined(FEAT_WINDOWS) || defined(PROTO)
+/*
+ * do_arg_all(): Open up to 'count' windows, one for each argument.
+ */
+    void
+do_arg_all(count, forceit)
+    int	count;
+    int	forceit;		/* hide buffers in current windows */
+{
+    int		i;
+    win_T	*wp, *wpnext;
+    char_u	*opened;	/* array of flags for which args are open */
+    int		opened_len;	/* lenght of opened[] */
+    int		use_firstwin = FALSE;	/* use first window for arglist */
+    int		split_ret = OK;
+    int		p_ea_save;
+    alist_T	*alist;		/* argument list to be used */
+    buf_T	*buf;
+
+    if (ARGCOUNT <= 0)
+    {
+	/* Don't give an error message.  We don't want it when the ":all"
+	 * command is in the .vimrc. */
+	return;
+    }
+    setpcmark();
+
+    opened_len = ARGCOUNT;
+    opened = alloc_clear((unsigned)opened_len);
+    if (opened == NULL)
+	return;
+
+#ifdef FEAT_GUI
+    need_mouse_correct = TRUE;
+#endif
+
+    /*
+     * Try closing all windows that are not in the argument list.
+     * Also close windows that are not full width;
+     * When 'hidden' or "forceit" set the buffer becomes hidden.
+     * Windows that have a changed buffer and can't be hidden won't be closed.
+     */
+    for (wp = firstwin; wp != NULL; wp = wpnext)
+    {
+	wpnext = wp->w_next;
+	buf = wp->w_buffer;
+	if (buf->b_ffname == NULL
+		|| buf->b_nwindows > 1
+#ifdef FEAT_VERTSPLIT
+		|| wp->w_width != Columns
+#endif
+		)
+	    i = ARGCOUNT;
+	else
+	{
+	    /* check if the buffer in this window is in the arglist */
+	    for (i = 0; i < ARGCOUNT; ++i)
+	    {
+		if (ARGLIST[i].ae_fnum == buf->b_fnum
+			|| fullpathcmp(alist_name(&ARGLIST[i]),
+					      buf->b_ffname, TRUE) & FPC_SAME)
+		{
+		    if (i < opened_len)
+			opened[i] = TRUE;
+		    if (wp->w_alist != curwin->w_alist)
+		    {
+			/* Use the current argument list for all windows
+			 * containing a file from it. */
+			alist_unlink(wp->w_alist);
+			wp->w_alist = curwin->w_alist;
+			++wp->w_alist->al_refcount;
+		    }
+		    break;
+		}
+	    }
+	}
+	wp->w_arg_idx = i;
+
+	if (i == ARGCOUNT)		/* close this window */
+	{
+	    if (P_HID(buf) || forceit || buf->b_nwindows > 1
+							|| !bufIsChanged(buf))
+	    {
+		/* If the buffer was changed, and we would like to hide it,
+		 * try autowriting. */
+		if (!P_HID(buf) && buf->b_nwindows <= 1 && bufIsChanged(buf))
+		{
+		    (void)autowrite(buf, FALSE);
+#ifdef FEAT_AUTOCMD
+		    /* check if autocommands removed the window */
+		    if (!win_valid(wp) || !buf_valid(buf))
+		    {
+			wpnext = firstwin;	/* start all over... */
+			continue;
+		    }
+#endif
+		}
+#ifdef FEAT_WINDOWS
+		if (firstwin == lastwin)	/* can't close last window */
+#endif
+		    use_firstwin = TRUE;
+#ifdef FEAT_WINDOWS
+		else
+		{
+		    win_close(wp, !P_HID(buf) && !bufIsChanged(buf));
+# ifdef FEAT_AUTOCMD
+		    /* check if autocommands removed the next window */
+		    if (!win_valid(wpnext))
+			wpnext = firstwin;	/* start all over... */
+# endif
+		}
+#endif
+	    }
+	}
+    }
+
+    /*
+     * Open a window for files in the argument list that don't have one.
+     * ARGCOUNT may change while doing this, because of autocommands.
+     */
+    if (count > ARGCOUNT || count <= 0)
+	count = ARGCOUNT;
+
+    /* Autocommands may do anything to the argument list.  Make sure it's not
+     * freed while we are working here by "locking" it.  We still have to
+     * watch out for its size to be changed. */
+    alist = curwin->w_alist;
+    ++alist->al_refcount;
+
+#ifdef FEAT_AUTOCMD
+    /* Don't execute Win/Buf Enter/Leave autocommands here. */
+    ++autocmd_no_enter;
+    ++autocmd_no_leave;
+#endif
+    win_enter(lastwin, FALSE);
+    for (i = 0; i < count && i < alist->al_ga.ga_len && !got_int; ++i)
+    {
+	if (alist == &global_alist && i == global_alist.al_ga.ga_len - 1)
+	    arg_had_last = TRUE;
+	if (i < opened_len && opened[i])
+	{
+	    /* Move the already present window to below the current window */
+	    if (curwin->w_arg_idx != i)
+	    {
+		for (wpnext = firstwin; wpnext != NULL; wpnext = wpnext->w_next)
+		{
+		    if (wpnext->w_arg_idx == i)
+		    {
+			win_move_after(wpnext, curwin);
+			break;
+		    }
+		}
+	    }
+	}
+	else if (split_ret == OK)
+	{
+	    if (!use_firstwin)		/* split current window */
+	    {
+		p_ea_save = p_ea;
+		p_ea = TRUE;		/* use space from all windows */
+		split_ret = win_split(0, WSP_ROOM | WSP_BELOW);
+		p_ea = p_ea_save;
+		if (split_ret == FAIL)
+		    continue;
+	    }
+#ifdef FEAT_AUTOCMD
+	    else    /* first window: do autocmd for leaving this buffer */
+		--autocmd_no_leave;
+#endif
+
+	    /*
+	     * edit file i
+	     */
+	    curwin->w_arg_idx = i;
+	    (void)do_ecmd(0, alist_name(&AARGLIST(alist)[i]), NULL, NULL,
+		      ECMD_ONE,
+		      ((P_HID(curwin->w_buffer)
+			   || bufIsChanged(curwin->w_buffer)) ? ECMD_HIDE : 0)
+							       + ECMD_OLDBUF);
+#ifdef FEAT_AUTOCMD
+	    if (use_firstwin)
+		++autocmd_no_leave;
+#endif
+	    use_firstwin = FALSE;
+	}
+	ui_breakcheck();
+    }
+
+    /* Remove the "lock" on the argument list. */
+    alist_unlink(alist);
+
+#ifdef FEAT_AUTOCMD
+    --autocmd_no_enter;
+#endif
+    win_enter(firstwin, FALSE);			/* back to first window */
+#ifdef FEAT_AUTOCMD
+    --autocmd_no_leave;
+#endif
+    vim_free(opened);
+}
+
+# if defined(FEAT_LISTCMDS) || defined(PROTO)
+/*
+ * Open a window for a number of buffers.
+ */
+    void
+ex_buffer_all(eap)
+    exarg_T	*eap;
+{
+    buf_T	*buf;
+    win_T	*wp, *wpnext;
+    int		split_ret = OK;
+    int		p_ea_save;
+    int		open_wins = 0;
+    int		r;
+    int		count;		/* Maximum number of windows to open. */
+    int		all;		/* When TRUE also load inactive buffers. */
+
+    if (eap->addr_count == 0)	/* make as many windows as possible */
+	count = 9999;
+    else
+	count = eap->line2;	/* make as many windows as specified */
+    if (eap->cmdidx == CMD_unhide || eap->cmdidx == CMD_sunhide)
+	all = FALSE;
+    else
+	all = TRUE;
+
+    setpcmark();
+
+#ifdef FEAT_GUI
+    need_mouse_correct = TRUE;
+#endif
+
+    /*
+     * Close superfluous windows (two windows for the same buffer).
+     * Also close windows that are not full-width.
+     */
+    for (wp = firstwin; wp != NULL; wp = wpnext)
+    {
+	wpnext = wp->w_next;
+	if (wp->w_buffer->b_nwindows > 1
+#ifdef FEAT_VERTSPLIT
+		|| ((cmdmod.split & WSP_VERT)
+			  ? wp->w_height + wp->w_status_height < Rows - p_ch
+			  : wp->w_width != Columns)
+#endif
+		)
+	{
+	    win_close(wp, FALSE);
+#ifdef FEAT_AUTOCMD
+	    wpnext = firstwin;	/* just in case an autocommand does something
+				   strange with windows */
+	    open_wins = 0;
+#endif
+	}
+	else
+	    ++open_wins;
+    }
+
+    /*
+     * Go through the buffer list.  When a buffer doesn't have a window yet,
+     * open one.  Otherwise move the window to the right position.
+     * Watch out for autocommands that delete buffers or windows!
+     */
+#ifdef FEAT_AUTOCMD
+    /* Don't execute Win/Buf Enter/Leave autocommands here. */
+    ++autocmd_no_enter;
+#endif
+    win_enter(lastwin, FALSE);
+#ifdef FEAT_AUTOCMD
+    ++autocmd_no_leave;
+#endif
+    for (buf = firstbuf; buf != NULL && open_wins < count; buf = buf->b_next)
+    {
+	/* Check if this buffer needs a window */
+	if ((!all && buf->b_ml.ml_mfp == NULL) || !buf->b_p_bl)
+	    continue;
+
+	/* Check if this buffer already has a window */
+	for (wp = firstwin; wp != NULL; wp = wp->w_next)
+	    if (wp->w_buffer == buf)
+		break;
+	/* If the buffer already has a window, move it */
+	if (wp != NULL)
+	    win_move_after(wp, curwin);
+	else if (split_ret == OK)
+	{
+	    /* Split the window and put the buffer in it */
+	    p_ea_save = p_ea;
+	    p_ea = TRUE;		/* use space from all windows */
+	    split_ret = win_split(0, WSP_ROOM | WSP_BELOW);
+	    ++open_wins;
+	    p_ea = p_ea_save;
+	    if (split_ret == FAIL)
+		continue;
+
+	    /* Open the buffer in this window. */
+#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
+	    swap_exists_action = SEA_DIALOG;
+#endif
+	    set_curbuf(buf, DOBUF_GOTO);
+#ifdef FEAT_AUTOCMD
+# ifdef FEAT_EVAL
+	    /* Autocommands deleted the buffer or aborted script
+	     * processing!!! */
+	    if (!buf_valid(buf) || aborting())
+# else
+	    if (!buf_valid(buf))	/* autocommands deleted the buffer!!! */
+# endif
+	    {
+#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
+		swap_exists_action = SEA_NONE;
+#endif
+		break;
+	    }
+#endif
+#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
+	    if (swap_exists_action == SEA_QUIT)
+	    {
+		/* User selected Quit at ATTENTION prompt; close this window. */
+		win_close(curwin, TRUE);
+		--open_wins;
+		swap_exists_action = SEA_NONE;
+	    }
+	    else
+		handle_swap_exists(NULL);
+#endif
+	}
+
+	ui_breakcheck();
+	if (got_int)
+	{
+	    (void)vgetc();	/* only break the file loading, not the rest */
+	    break;
+	}
+    }
+#ifdef FEAT_AUTOCMD
+    --autocmd_no_enter;
+#endif
+    win_enter(firstwin, FALSE);		/* back to first window */
+#ifdef FEAT_AUTOCMD
+    --autocmd_no_leave;
+#endif
+
+    /*
+     * Close superfluous windows.
+     */
+    for (wp = lastwin; open_wins > count; )
+    {
+	r = (P_HID(wp->w_buffer) || !bufIsChanged(wp->w_buffer)
+				     || autowrite(wp->w_buffer, FALSE) == OK);
+#ifdef FEAT_AUTOCMD
+	if (!win_valid(wp))
+	{
+	    /* BufWrite Autocommands made the window invalid, start over */
+	    wp = lastwin;
+	}
+	else
+#endif
+	    if (r)
+	{
+	    win_close(wp, !P_HID(wp->w_buffer));
+	    --open_wins;
+	    wp = lastwin;
+	}
+	else
+	{
+	    wp = wp->w_prev;
+	    if (wp == NULL)
+		break;
+	}
+    }
+}
+# endif /* FEAT_LISTCMDS */
+
+#endif /* FEAT_WINDOWS */
+
+/*
+ * do_modelines() - process mode lines for the current file
+ *
+ * Returns immediately if the "ml" option isn't set.
+ */
+static int  chk_modeline __ARGS((linenr_T));
+
+    void
+do_modelines()
+{
+    linenr_T	    lnum;
+    int		    nmlines;
+    static int	    entered = 0;
+
+    if (!curbuf->b_p_ml || (nmlines = (int)p_mls) == 0)
+	return;
+
+    /* Disallow recursive entry here.  Can happen when executing a modeline
+     * triggers an autocommand, which reloads modelines with a ":do". */
+    if (entered)
+	return;
+
+    ++entered;
+    for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count && lnum <= nmlines;
+								       ++lnum)
+	if (chk_modeline(lnum) == FAIL)
+	    nmlines = 0;
+
+    for (lnum = curbuf->b_ml.ml_line_count; lnum > 0 && lnum > nmlines
+		       && lnum > curbuf->b_ml.ml_line_count - nmlines; --lnum)
+	if (chk_modeline(lnum) == FAIL)
+	    nmlines = 0;
+    --entered;
+}
+
+#include "version.h"		/* for version number */
+
+/*
+ * chk_modeline() - check a single line for a mode string
+ * Return FAIL if an error encountered.
+ */
+    static int
+chk_modeline(lnum)
+    linenr_T	lnum;
+{
+    char_u	*s;
+    char_u	*e;
+    char_u	*linecopy;		/* local copy of any modeline found */
+    int		prev;
+    int		vers;
+    int		end;
+    int		retval = OK;
+    char_u	*save_sourcing_name;
+    linenr_T	save_sourcing_lnum;
+#ifdef FEAT_EVAL
+    scid_T	save_SID;
+#endif
+
+    prev = -1;
+    for (s = ml_get(lnum); *s != NUL; ++s)
+    {
+	if (prev == -1 || vim_isspace(prev))
+	{
+	    if ((prev != -1 && STRNCMP(s, "ex:", (size_t)3) == 0)
+		    || STRNCMP(s, "vi:", (size_t)3) == 0)
+		break;
+	    if (STRNCMP(s, "vim", 3) == 0)
+	    {
+		if (s[3] == '<' || s[3] == '=' || s[3] == '>')
+		    e = s + 4;
+		else
+		    e = s + 3;
+		vers = getdigits(&e);
+		if (*e == ':'
+			&& (s[3] == ':'
+			    || (VIM_VERSION_100 >= vers && isdigit(s[3]))
+			    || (VIM_VERSION_100 < vers && s[3] == '<')
+			    || (VIM_VERSION_100 > vers && s[3] == '>')
+			    || (VIM_VERSION_100 == vers && s[3] == '=')))
+		    break;
+	    }
+	}
+	prev = *s;
+    }
+
+    if (*s)
+    {
+	do				/* skip over "ex:", "vi:" or "vim:" */
+	    ++s;
+	while (s[-1] != ':');
+
+	s = linecopy = vim_strsave(s);	/* copy the line, it will change */
+	if (linecopy == NULL)
+	    return FAIL;
+
+	save_sourcing_lnum = sourcing_lnum;
+	save_sourcing_name = sourcing_name;
+	sourcing_lnum = lnum;		/* prepare for emsg() */
+	sourcing_name = (char_u *)"modelines";
+
+	end = FALSE;
+	while (end == FALSE)
+	{
+	    s = skipwhite(s);
+	    if (*s == NUL)
+		break;
+
+	    /*
+	     * Find end of set command: ':' or end of line.
+	     * Skip over "\:", replacing it with ":".
+	     */
+	    for (e = s; *e != ':' && *e != NUL; ++e)
+		if (e[0] == '\\' && e[1] == ':')
+		    STRCPY(e, e + 1);
+	    if (*e == NUL)
+		end = TRUE;
+
+	    /*
+	     * If there is a "set" command, require a terminating ':' and
+	     * ignore the stuff after the ':'.
+	     * "vi:set opt opt opt: foo" -- foo not interpreted
+	     * "vi:opt opt opt: foo" -- foo interpreted
+	     * Accept "se" for compatibility with Elvis.
+	     */
+	    if (STRNCMP(s, "set ", (size_t)4) == 0
+		    || STRNCMP(s, "se ", (size_t)3) == 0)
+	    {
+		if (*e != ':')		/* no terminating ':'? */
+		    break;
+		end = TRUE;
+		s = vim_strchr(s, ' ') + 1;
+	    }
+	    *e = NUL;			/* truncate the set command */
+
+	    if (*s != NUL)		/* skip over an empty "::" */
+	    {
+#ifdef FEAT_EVAL
+		save_SID = current_SID;
+		current_SID = SID_MODELINE;
+#endif
+		retval = do_set(s, OPT_MODELINE | OPT_LOCAL);
+#ifdef FEAT_EVAL
+		current_SID = save_SID;
+#endif
+		if (retval == FAIL)		/* stop if error found */
+		    break;
+	    }
+	    s = e + 1;			/* advance to next part */
+	}
+
+	sourcing_lnum = save_sourcing_lnum;
+	sourcing_name = save_sourcing_name;
+
+	vim_free(linecopy);
+    }
+    return retval;
+}
+
+#ifdef FEAT_VIMINFO
+    int
+read_viminfo_bufferlist(virp, writing)
+    vir_T	*virp;
+    int		writing;
+{
+    char_u	*tab;
+    linenr_T	lnum;
+    colnr_T	col;
+    buf_T	*buf;
+    char_u	*sfname;
+    char_u	*xline;
+
+    /* Handle long line and escaped characters. */
+    xline = viminfo_readstring(virp, 1, FALSE);
+
+    /* don't read in if there are files on the command-line or if writing: */
+    if (xline != NULL && !writing && ARGCOUNT == 0
+				       && find_viminfo_parameter('%') != NULL)
+    {
+	/* Format is: <fname> Tab <lnum> Tab <col>.
+	 * Watch out for a Tab in the file name, work from the end. */
+	lnum = 0;
+	col = 0;
+	tab = vim_strrchr(xline, '\t');
+	if (tab != NULL)
+	{
+	    *tab++ = '\0';
+	    col = atoi((char *)tab);
+	    tab = vim_strrchr(xline, '\t');
+	    if (tab != NULL)
+	    {
+		*tab++ = '\0';
+		lnum = atol((char *)tab);
+	    }
+	}
+
+	/* Expand "~/" in the file name at "line + 1" to a full path.
+	 * Then try shortening it by comparing with the current directory */
+	expand_env(xline, NameBuff, MAXPATHL);
+	mch_dirname(IObuff, IOSIZE);
+	sfname = shorten_fname(NameBuff, IObuff);
+	if (sfname == NULL)
+	    sfname = NameBuff;
+
+	buf = buflist_new(NameBuff, sfname, (linenr_T)0, BLN_LISTED);
+	if (buf != NULL)	/* just in case... */
+	{
+	    buf->b_last_cursor.lnum = lnum;
+	    buf->b_last_cursor.col = col;
+	    buflist_setfpos(buf, curwin, lnum, col, FALSE);
+	}
+    }
+    vim_free(xline);
+
+    return viminfo_readline(virp);
+}
+
+    void
+write_viminfo_bufferlist(fp)
+    FILE    *fp;
+{
+    buf_T	*buf;
+#ifdef FEAT_WINDOWS
+    win_T	*win;
+#endif
+    char_u	*line;
+
+    if (find_viminfo_parameter('%') == NULL)
+	return;
+
+    /* Allocate room for the file name, lnum and col. */
+    line = alloc(MAXPATHL + 30);
+    if (line == NULL)
+	return;
+
+#ifdef FEAT_WINDOWS
+    for (win = firstwin; win != NULL; win = win->w_next)
+	set_last_cursor(win);
+#else
+    set_last_cursor(curwin);
+#endif
+
+    fprintf(fp, _("\n# Buffer list:\n"));
+    for (buf = firstbuf; buf != NULL ; buf = buf->b_next)
+    {
+	if (buf->b_fname == NULL
+		|| !buf->b_p_bl
+#ifdef FEAT_QUICKFIX
+		|| bt_quickfix(buf)
+#endif
+		|| removable(buf->b_ffname))
+	    continue;
+
+	putc('%', fp);
+	home_replace(NULL, buf->b_ffname, line, MAXPATHL, TRUE);
+	sprintf((char *)line + STRLEN(line), "\t%ld\t%d",
+			(long)buf->b_last_cursor.lnum,
+			buf->b_last_cursor.col);
+	viminfo_writestring(fp, line);
+    }
+    vim_free(line);
+}
+#endif
+
+
+/*
+ * Return special buffer name.
+ * Returns NULL when the buffer has a normal file name.
+ */
+    char *
+buf_spname(buf)
+    buf_T	*buf;
+{
+#if defined(FEAT_QUICKFIX) && defined(FEAT_WINDOWS)
+    if (bt_quickfix(buf))
+	return _("[Error List]");
+#endif
+#ifdef FEAT_QUICKFIX
+    /* There is no _file_ when 'buftype' is "nofile", b_sfname
+     * contains the name as specified by the user */
+    if (bt_nofile(buf))
+    {
+	if (buf->b_sfname != NULL)
+	    return (char *)buf->b_sfname;
+	return "[Scratch]";
+    }
+#endif
+    if (buf->b_fname == NULL)
+	return _("[No File]");
+    return NULL;
+}
+
+
+#if defined(FEAT_SIGNS) || defined(PROTO)
+/*
+ * Insert the sign into the signlist.
+ */
+    static void
+insert_sign(buf, prev, next, id, lnum, typenr)
+    buf_T	*buf;		/* buffer to store sign in */
+    signlist_T	*prev;		/* previous sign entry */
+    signlist_T	*next;		/* next sign entry */
+    int		id;		/* sign ID */
+    linenr_T	lnum;		/* line number which gets the mark */
+    int		typenr;		/* typenr of sign we are adding */
+{
+    signlist_T	*newsign;
+
+    newsign = (signlist_T *)lalloc((long_u)sizeof(signlist_T), FALSE);
+    if (newsign != NULL)
+    {
+	newsign->id = id;
+	newsign->lnum = lnum;
+	newsign->typenr = typenr;
+	newsign->next = next;
+#ifdef FEAT_NETBEANS_INTG
+	newsign->prev = prev;
+	if (next != NULL)
+	    next->prev = newsign;
+#endif
+
+	if (prev == NULL)
+	{
+	    /* When adding first sign need to redraw the windows to create the
+	     * column for signs. */
+	    if (buf->b_signlist == NULL)
+	    {
+		redraw_buf_later(buf, NOT_VALID);
+		changed_cline_bef_curs();
+	    }
+
+	    /* first sign in signlist */
+	    buf->b_signlist = newsign;
+	}
+	else
+	    prev->next = newsign;
+    }
+}
+
+/*
+ * Add the sign into the signlist. Find the right spot to do it though.
+ */
+    void
+buf_addsign(buf, id, lnum, typenr)
+    buf_T	*buf;		/* buffer to store sign in */
+    int		id;		/* sign ID */
+    linenr_T	lnum;		/* line number which gets the mark */
+    int		typenr;		/* typenr of sign we are adding */
+{
+    signlist_T	*sign;		/* a sign in the signlist */
+    signlist_T	*prev;		/* the previous sign */
+
+    prev = NULL;
+    for (sign = buf->b_signlist; sign != NULL; sign = sign->next)
+    {
+	if (lnum == sign->lnum && id == sign->id)
+	{
+	    sign->typenr = typenr;
+	    return;
+	}
+	else if (
+#ifndef FEAT_NETBEANS_INTG  /* keep signs sorted by lnum */
+		   id < 0 &&
+#endif
+			     lnum < sign->lnum)
+	{
+#ifdef FEAT_NETBEANS_INTG /* insert new sign at head of list for this lnum */
+	    /* XXX - GRP: Is this because of sign slide problem? Or is it
+	     * really needed? Or is it because we allow multiple signs per
+	     * line? If so, should I add that feature to FEAT_SIGNS?
+	     */
+	    while (prev != NULL && prev->lnum == lnum)
+		prev = prev->prev;
+	    if (prev == NULL)
+		sign = buf->b_signlist;
+	    else
+		sign = prev->next;
+#endif
+	    insert_sign(buf, prev, sign, id, lnum, typenr);
+	    return;
+	}
+	prev = sign;
+    }
+#ifdef FEAT_NETBEANS_INTG /* insert new sign at head of list for this lnum */
+    /* XXX - GRP: See previous comment */
+    while (prev != NULL && prev->lnum == lnum)
+	prev = prev->prev;
+    if (prev == NULL)
+	sign = buf->b_signlist;
+    else
+	sign = prev->next;
+#endif
+    insert_sign(buf, prev, sign, id, lnum, typenr);
+
+    return;
+}
+
+    int
+buf_change_sign_type(buf, markId, typenr)
+    buf_T	*buf;		/* buffer to store sign in */
+    int		markId;		/* sign ID */
+    int		typenr;		/* typenr of sign we are adding */
+{
+    signlist_T	*sign;		/* a sign in the signlist */
+
+    for (sign = buf->b_signlist; sign != NULL; sign = sign->next)
+    {
+	if (sign->id == markId)
+	{
+	    sign->typenr = typenr;
+	    return sign->lnum;
+	}
+    }
+
+    return 0;
+}
+
+    int_u
+buf_getsigntype(buf, lnum, type)
+    buf_T	*buf;
+    linenr_T	lnum;
+    int		type;	/* SIGN_ICON, SIGN_TEXT, SIGN_ANY, SIGN_LINEHL */
+{
+    signlist_T	*sign;		/* a sign in a b_signlist */
+
+    for (sign = buf->b_signlist; sign != NULL; sign = sign->next)
+	if (sign->lnum == lnum
+		&& (type == SIGN_ANY
+# ifdef FEAT_SIGN_ICONS
+		    || (type == SIGN_ICON
+			&& sign_get_image(sign->typenr) != NULL)
+# endif
+		    || (type == SIGN_TEXT
+			&& sign_get_text(sign->typenr) != NULL)
+		    || (type == SIGN_LINEHL
+			&& sign_get_attr(sign->typenr, TRUE) != 0)))
+	    return sign->typenr;
+    return 0;
+}
+
+
+    linenr_T
+buf_delsign(buf, id)
+    buf_T	*buf;		/* buffer sign is stored in */
+    int		id;		/* sign id */
+{
+    signlist_T	**lastp;	/* pointer to pointer to current sign */
+    signlist_T	*sign;		/* a sign in a b_signlist */
+    signlist_T	*next;		/* the next sign in a b_signlist */
+    linenr_T	lnum;		/* line number whose sign was deleted */
+
+    lastp = &buf->b_signlist;
+    lnum = 0;
+    for (sign = buf->b_signlist; sign != NULL; sign = next)
+    {
+	next = sign->next;
+	if (sign->id == id)
+	{
+	    *lastp = next;
+#ifdef FEAT_NETBEANS_INTG
+	    if (next != NULL)
+		next->prev = sign->prev;
+#endif
+	    lnum = sign->lnum;
+	    vim_free(sign);
+	    break;
+	}
+	else
+	    lastp = &sign->next;
+    }
+
+    /* When deleted the last sign need to redraw the windows to remove the
+     * sign column. */
+    if (buf->b_signlist == NULL)
+    {
+	redraw_buf_later(buf, NOT_VALID);
+	changed_cline_bef_curs();
+    }
+
+    return lnum;
+}
+
+
+/*
+ * Find the line number of the sign with the requested id. If the sign does
+ * not exist, return 0 as the line number. This will still let the correct file
+ * get loaded.
+ */
+    int
+buf_findsign(buf, id)
+    buf_T	*buf;		/* buffer to store sign in */
+    int		id;		/* sign ID */
+{
+    signlist_T	*sign;		/* a sign in the signlist */
+
+    for (sign = buf->b_signlist; sign != NULL; sign = sign->next)
+	if (sign->id == id)
+	    return sign->lnum;
+
+    return 0;
+}
+
+    int
+buf_findsign_id(buf, lnum)
+    buf_T	*buf;		/* buffer whose sign we are searching for */
+    linenr_T	lnum;		/* line number of sign */
+{
+    signlist_T	*sign;		/* a sign in the signlist */
+
+    for (sign = buf->b_signlist; sign != NULL; sign = sign->next)
+	if (sign->lnum == lnum)
+	    return sign->id;
+
+    return 0;
+}
+
+
+# if defined(FEAT_NETBEANS_INTG) || defined(PROTO)
+/* see if a given type of sign exists on a specific line */
+    int
+buf_findsigntype_id(buf, lnum, typenr)
+    buf_T	*buf;		/* buffer whose sign we are searching for */
+    linenr_T	lnum;		/* line number of sign */
+    int		typenr;		/* sign type number */
+{
+    signlist_T	*sign;		/* a sign in the signlist */
+
+    for (sign = buf->b_signlist; sign != NULL; sign = sign->next)
+	if (sign->lnum == lnum && sign->typenr == typenr)
+	    return sign->id;
+
+    return 0;
+}
+
+
+#  if defined(FEAT_SIGN_ICONS) || defined(PROTO)
+/* return the number of icons on the given line */
+    int
+buf_signcount(buf, lnum)
+    buf_T	*buf;
+    linenr_T	lnum;
+{
+    signlist_T	*sign;		/* a sign in the signlist */
+    int		count = 0;
+
+    for (sign = buf->b_signlist; sign != NULL; sign = sign->next)
+	if (sign->lnum == lnum)
+	    if (sign_get_image(sign->typenr) != NULL)
+		count++;
+
+    return count;
+}
+#  endif /* FEAT_SIGN_ICONS */
+# endif /* FEAT_NETBEANS_INTG */
+
+
+/*
+ * Delete signs in buffer "buf".
+ */
+    static void
+buf_delete_signs(buf)
+    buf_T	*buf;
+{
+    signlist_T	*next;
+
+    while (buf->b_signlist != NULL)
+    {
+	next = buf->b_signlist->next;
+	vim_free(buf->b_signlist);
+	buf->b_signlist = next;
+    }
+}
+
+/*
+ * Delete all signs in all buffers.
+ */
+    void
+buf_delete_all_signs()
+{
+    buf_T	*buf;		/* buffer we are checking for signs */
+
+    for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+	if (buf->b_signlist != NULL)
+	{
+	    /* Need to redraw the windows to remove the sign column. */
+	    redraw_buf_later(buf, NOT_VALID);
+	    buf_delete_signs(buf);
+	}
+}
+
+/*
+ * List placed signs for "rbuf".  If "rbuf" is NULL do it for all buffers.
+ */
+    void
+sign_list_placed(rbuf)
+    buf_T	*rbuf;
+{
+    buf_T	*buf;
+    signlist_T	*p;
+    char	lbuf[BUFSIZ];
+
+    MSG_PUTS_TITLE(_("\n--- Signs ---"));
+    msg_putchar('\n');
+    if (rbuf == NULL)
+	buf = firstbuf;
+    else
+	buf = rbuf;
+    while (buf != NULL)
+    {
+	if (buf->b_signlist != NULL)
+	{
+#ifdef HAVE_SNPRINTF
+	    snprintf
+#else
+	    sprintf
+#endif
+		(lbuf,
+#ifdef HAVE_SNPRINTF
+		 BUFSIZ,
+#endif
+		    _("Signs for %s:"), buf->b_fname);
+	    MSG_PUTS_ATTR(lbuf, hl_attr(HLF_D));
+	    msg_putchar('\n');
+	}
+	for (p = buf->b_signlist; p != NULL; p = p->next)
+	{
+	    sprintf(lbuf, _("    line=%ld  id=%d  name=%s"),
+			   (long)p->lnum, p->id, sign_typenr2name(p->typenr));
+	    MSG_PUTS(lbuf);
+	    msg_putchar('\n');
+	}
+	if (rbuf != NULL)
+	    break;
+	buf = buf->b_next;
+    }
+}
+
+/*
+ * Adjust a placed sign for inserted/deleted lines.
+ */
+    void
+sign_mark_adjust(line1, line2, amount, amount_after)
+    linenr_T	line1;
+    linenr_T	line2;
+    long	amount;
+    long	amount_after;
+{
+    signlist_T	*sign;		/* a sign in a b_signlist */
+
+    for (sign = curbuf->b_signlist; sign != NULL; sign = sign->next)
+    {
+	if (sign->lnum >= line1 && sign->lnum <= line2)
+	{
+	    if (amount == MAXLNUM)
+		sign->lnum = line1;
+	    else
+		sign->lnum += amount;
+	}
+	else if (sign->lnum > line2)
+	    sign->lnum += amount_after;
+    }
+}
+#endif /* FEAT_SIGNS */
+
+/*
+ * Set 'buflisted' for curbuf to "on" and trigger autocommands if it changed.
+ */
+    void
+set_buflisted(on)
+    int		on;
+{
+    if (on != curbuf->b_p_bl)
+    {
+	curbuf->b_p_bl = on;
+#ifdef FEAT_AUTOCMD
+	if (on)
+	    apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, curbuf);
+	else
+	    apply_autocmds(EVENT_BUFDELETE, NULL, NULL, FALSE, curbuf);
+#endif
+    }
+}
+
+/*
+ * Read the file for "buf" again and check if the contents changed.
+ * Return TRUE if it changed or this could not be checked.
+ */
+    int
+buf_contents_changed(buf)
+    buf_T	*buf;
+{
+    buf_T	*newbuf;
+    int		differ = TRUE;
+    linenr_T	lnum;
+#ifdef FEAT_AUTOCMD
+    aco_save_T	aco;
+#else
+    buf_T	*old_curbuf = curbuf;
+#endif
+    exarg_T	ea;
+
+    /* Allocate a buffer without putting it in the buffer list. */
+    newbuf = buflist_new(NULL, NULL, (linenr_T)1, BLN_DUMMY);
+    if (newbuf == NULL)
+	return TRUE;
+
+    /* Force the 'fileencoding' and 'fileformat' to be equal. */
+    if (prep_exarg(&ea, buf) == FAIL)
+    {
+	wipe_buffer(newbuf, FALSE);
+	return TRUE;
+    }
+
+#ifdef FEAT_AUTOCMD
+    /* set curwin/curbuf to buf and save a few things */
+    aucmd_prepbuf(&aco, newbuf);
+#else
+    curbuf = newbuf;
+    curwin->w_buffer = newbuf;
+#endif
+
+    if (ml_open() == OK
+	    && readfile(buf->b_ffname, buf->b_fname,
+				  (linenr_T)0, (linenr_T)0, (linenr_T)MAXLNUM,
+					    &ea, READ_NEW | READ_DUMMY) == OK)
+    {
+	/* compare the two files line by line */
+	if (buf->b_ml.ml_line_count == curbuf->b_ml.ml_line_count)
+	{
+	    differ = FALSE;
+	    for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)
+		if (STRCMP(ml_get_buf(buf, lnum, FALSE), ml_get(lnum)) != 0)
+		{
+		    differ = TRUE;
+		    break;
+		}
+	}
+    }
+    vim_free(ea.cmd);
+
+#ifdef FEAT_AUTOCMD
+    /* restore curwin/curbuf and a few other things */
+    aucmd_restbuf(&aco);
+#else
+    curbuf = old_curbuf;
+    curwin->w_buffer = old_curbuf;
+#endif
+
+    if (curbuf != newbuf)	/* safety check */
+	wipe_buffer(newbuf, FALSE);
+
+    return differ;
+}
+
+/*
+ * Wipe out a buffer and decrement the last buffer number if it was used for
+ * this buffer.  Call this to wipe out a temp buffer that does not contain any
+ * marks.
+ */
+/*ARGSUSED*/
+    void
+wipe_buffer(buf, aucmd)
+    buf_T	*buf;
+    int		aucmd;	    /* When TRUE trigger autocommands. */
+{
+    if (buf->b_fnum == top_file_num - 1)
+	--top_file_num;
+
+#ifdef FEAT_AUTOCMD
+    if (!aucmd)		    /* Don't trigger BufDelete autocommands here. */
+	++autocmd_block;
+#endif
+    close_buffer(NULL, buf, DOBUF_WIPE);
+#ifdef FEAT_AUTOCMD
+    if (!aucmd)
+	--autocmd_block;
+#endif
+}