[9front] window label

[Romano <me+unobe@fallglow.com>]

The man page for window(1) has quite a few
flags yet one that I often wish were there is not:
setting the label. There's a separate 'label'
command, so the simplest I've gotten to starting
a new window with rc and setting the label is:

	window rc -c '''label mylabel; rc'''

The inner quotes are required.[1]

Here is what is documented in window(1):

	window [ -m ] [ -r minx miny maxx maxy ] [ -dx n ] [ -dy n ]
          [ -minx n ] [ -miny n ] [ -maxx n ] [ -maxy n ] [ -cd dir ]
          [ -hide ] [ -scroll ] [ -noscroll ] [ cmd arg ... ]

There are 3 different ways to set the size of the window
(i.e., '-r', '-dx/dy', '-min/max'), and two flags to
determine scrolling. To me, it looks like this might have
been an oversight or window(1) was developed when the
UI wasn't more fully developed (i.e., before a 'label'
even existed).[2] I'll only ask one question
for now: is the lack of setting label with a flag an
oversight or intentional?[3]

- Romano

[1] I haven't investigated much, but I think
    it has to do with the parsing of arguments by window
    to the new window. For example:

		window rc -c 'echo -n mylabel > /mnt/wsys/label; rc'

    Will complain in the new window:

		Illegal flag -n
		Usage: rc [-srdiIlxebpvV] [-c arg] [-m command] [file [arg ...]]

    Maybe /bin/window needs to set $cmd to $"cmd when,
    except in the $#xflag case.

[2] Also, '-m', which never brings to mind 'namespace'
    for me but I realize it's mean to signify 'mount' as
    explained in the manual, is like 'scroll' and 'hide'
    with respect to the other flags because they're ones
    whose current values I see which doesn't appear
    accessible in /mnt/wsys/ (or /dev) (scroll can be set
    via /mnt/wsys/wctl, and 'visible' wctl signifies the
    window is not hidden, but that's the extent of it
    as far as I can tell).

[3] Lastly, '-x' does set the label to execute a
    new command, but doesn't create a new window. This
    flag isn't documented yet I see it's used when '-m'
    is used to set the label automatically to the command
    being run. It might make sense to do the same thing
    when '-m' isn't used, too, rather than the 'rc DDDDD'
    default.