Re: cd /u/N/v/ tab expansion

[Tomasz Pala <gotar@polanet.pl>]

On Sun, Apr 10, 2022 at 16:32:22 +0200, Tomasz Pala wrote:

> This happens with: setopt glob_complete interfering with
[...]
> $ mkdir -p usr/{share/{aclocal,atever},sbin,src}
> $ touch usr/sbin/a1 usr/share/a1 usr/share/a2
> 
> $ ls u/s*/a[tab]
[...]
> 
> My solution was to use:
> 
> zstyle ':completion:*:*:*:*' list-suffixes yes
> 
> but then:
> 
> $ mkdir -p  a/{b1,b2}/d/{e1,e2}/g
> $ ls a/b/d/e/g[tab]
> No matches for: `files' or `directory'

I've tracked down this problem down to the initial commit:
https://sourceforge.net/p/zsh/code/ci/e0dc80e0e54df85329b1644001df80e908fd5b9c/

around line 745 of _path_files (currently), there is this code:

	if [[ -z "$listsfx" ]]; then
		[...]
	else
		[[ -n "$compstate[pattern_match]" ]] && SUFFIX="${SUFFIX:s./.*/}*"

this SUFFIX manglignt is required for:

$ ls u/s*/a[tab]	changes "/a" to "*/a*"

but it breaks
$ ls a/b/d/e/g[tab]	changing "/d/e/g" to "*/d/e/g*"


In both cases all the files ARE compadded properly, the problem emerges
from the leading and trailing asterisks added to the SUFFIX.

1. why the "*/d/e/g*" SUFFIX prevents completions from being used?
2. should it be left intact? What makes this *required* for u/s*/a?
3. if to be left intact - how to prevent this from happening? The only
difference I see are MATCH=/ MBEGIN=6 MEND=6.


The solution I've came works for me, but I got no idea why and if that's
even the rational way:

-	[[ -n "$compstate[pattern_match]" ]]			&& SUFFIX="${SUFFIX:s./.*/}*"
+	[[ -n "$compstate[pattern_match]" ]] && [ -z "$MATCH" ] && SUFFIX="${SUFFIX:s./.*/}*"



This code is full of hackery... "pws non-canonical hack", "A little
extra hack", "it should now be smart"...


-- 
Tomasz Pala <gotar@pld-linux.org>