Re: Can I test if a parameter expansion has worked

[Stephane Chazelas <stephane@xxxxxxxxxxxx>]

2022-09-20 14:25:51 +0100, Stephane Chazelas:
[...]
> ITYM
> 
> if [[ $f =~ '\.(jpe?g|gif|png)$' ]]
[...]

Which, btw, if the rematchpcre option is on must be changed to:

if [[ $f =~ '\.(jpe?g|gif|png)\z' ]]

As otherwise, that would match on f=$'foo.gif\n' for instance.

With rematchpcre, see also:

$ f=$'St\xe9phane.jpg'
$ [[ $f =~ '\.(jpe?g|gif|png)\z' ]]
zsh: pcre_exec() error [-10]

Not fixed with:

$ LC_ALL=C [ "$f" '=~' '\.(jpe?g|gif|png)\z' ]
zsh: pcre_exec() error [-10]

(bug?)

-- 
Stephane