bug#30271: 26.0.91; shell mode completion sometimes fails to complete

[Mike Kupfer <mkupfer@alum.berkeley.edu>]

Mike Kupfer wrote:

> I suspect that the completion code is trying to be clever, figuring that
> directories are not compressable, so "gzip Desktop" would not make
> sense.

I've verified that the completion code is going through
#'pcomplete/gzip.  From inspection, I see that #'pcmpl-gnu-zipped-files
only considers regular files, so directories get filtered out.

> But this just gets in the way if what I want to compress is a
> file in Desktop.

I haven't found any user options or variables that will let me get the
behavior I want, so I ended up putting this workaround in my startup
code:

(defadvice pcomplete-find-completion-function (after 
					       mdk-reliable-completions
					       compile
					       activate)
  "Force use of the generic completion function."
  (setq ad-return-value nil))

mike