GNU bug report logs - #48356
28.0.50; choose-completion discards the suffix after the completion boundary

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From: Juri Linkov <juri <at> linkov.net>
To: 48356 <at> debbugs.gnu.org
Cc: mail <at> daniel-mendler.de, monnier <at> iro.umontreal.ca, jdtsmith <at> gmail.com
Subject: bug#48356: 28.0.50; choose-completion discards the suffix after the completion boundary
Date: Mon, 14 Mar 2022 20:53:15 +0200

>> For example when completing a file path "~/emacs/master/li|/calc", where
>> "|" is the cursor, and then the candidate "lisp" is selected in the
>> *Completions* buffer, the result is "~/emacs/master/lisp/". The prefix
>> "~/emacs/master/" is prepended to the selected candidate, but the suffix
>> "/calc" is discarded.
>
> Yup.  That's listed under "bugs" at the beginning of minibuffer.el:
>
>     ;; - choose-completion can't automatically figure out the boundaries
>     ;;   corresponding to the displayed completions because we only
>     ;;   provide the start info but not the end info in
>     ;;   completion-base-position.
>
>> ... and the suffix is preserved.
>
> Of course, the suffix should *not* be preserved when the minibuffer was
> "r|e-buf".

IMHO, the root of the problem is in completion-all-completions
that returns in the last `cdr' only the start of completions,
but not the end of completions.

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