Re: dired-move-to-filename-regexp

[Miles Bader]

On Sun, Sep 19, 2004 at 09:49:15PM -0700, Paul Eggert wrote:
> > If there is a reliable, trouble-free and quick way to check
> > whether the ls program supports --dired, that could be used instead.
> 
> Why not have Emacs try "ls -l --dired" first, and, if that doesn't
> work, fall back on "ls -l" without --dired?  The --dired usage would
> be considered to "work" only if the output ended in the required
> //DIRED// and //DIRED-OPTIONS// lines in the proper forms.
> 
> This procedure should be reliable in practice.

BTW, an annoying thing asbout recent versions of ls with emacs is that when
you rename a file in dired, it calls `ls' with just that file to regenerate
its dired line, but since ls only seems the oneo entry, it shrinks all the
numeric/name fields to their minimum size, so the updated line doesn't match
the rest of the output.

One way this might be fixed would be to have --dired output a "spec" for the
output it generates (e.g., a list of field widths it used), and then also
have an option to ls to use a given "spec" to set the fields widths (which
emacs would then pass in from the previous --dired output).

-Miles
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