This is news to me, a multitasking vi user has been discovered in the wild.

Job Snijders <job@openbsd.org> wrote:

> Dear all,
> 
> I usually have a few instances of vi open next to each other (using a
> window manager), and found pressing control-G all the time to understand
> 'what file is in what window' to be tedious. Instead, offer a configurable
> option (default off) to display the file name in the lower left corner.
> 
> OK? Thoughts?
> 
> Kind regards,
> 
> Job
> 
> Index: vi/common/options.c
> ===================================================================
> RCS file: /cvs/src/usr.bin/vi/common/options.c,v
> diff -u -p -r1.29 options.c
> --- vi/common/options.c	13 Apr 2021 15:39:21 -0000	1.29
> +++ vi/common/options.c	12 Feb 2024 15:02:03 -0000
> @@ -149,6 +149,8 @@ OPTLIST const optlist[] = {
>  	{"showmatch",	NULL,		OPT_0BOOL,	0},
>  /* O_SHOWMODE	  4.4BSD */
>  	{"showmode",	NULL,		OPT_0BOOL,	0},
> +/* O_SHOWFILENAME */
> +	{"showfilename",NULL,		OPT_0BOOL,	0},
>  /* O_SIDESCROLL	  4.4BSD */
>  	{"sidescroll",	NULL,		OPT_NUM,	OPT_NOZERO},
>  /* O_TABSTOP	    4BSD */
> Index: vi/docs/USD.doc/vi.man/vi.1
> ===================================================================
> RCS file: /cvs/src/usr.bin/vi/docs/USD.doc/vi.man/vi.1,v
> diff -u -p -r1.83 vi.1
> --- vi/docs/USD.doc/vi.man/vi.1	29 Jan 2023 09:28:57 -0000	1.83
> +++ vi/docs/USD.doc/vi.man/vi.1	12 Feb 2024 15:02:03 -0000
> @@ -2500,6 +2500,10 @@ for
>  and
>  .Sq )\&
>  characters.
> +.It Cm showfilename Bq off
> +.Nm vi
> +only.
> +Display the file name on the colon command line.
>  .It Cm showmode , smd Bq off
>  .Nm vi
>  only.
> Index: vi/vi/vs_refresh.c
> ===================================================================
> RCS file: /cvs/src/usr.bin/vi/vi/vs_refresh.c,v
> diff -u -p -r1.22 vs_refresh.c
> --- vi/vi/vs_refresh.c	30 Jan 2016 21:31:08 -0000	1.22
> +++ vi/vi/vs_refresh.c	12 Feb 2024 15:02:03 -0000
> @@ -810,7 +810,7 @@ vs_modeline(SCR *sp)
>  
>  	/* If more than one screen in the display, show the file name. */
>  	curlen = 0;
> -	if (IS_SPLIT(sp)) {
> +	if (IS_SPLIT(sp) || O_ISSET(sp, O_SHOWFILENAME)) {
>  		for (p = sp->frp->name; *p != '\0'; ++p);
>  		for (ellipsis = 0, cols = sp->cols / 2; --p > sp->frp->name;) {
>  			if (*p == '/') {
>