bug#64903: 28.2; completion-at-point deletes next line(s) when completing a single character in elisp

[Stefan Kangas]

Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Thu, 27 Jul 2023 16:10:23 +0000
>> From:  Thalis Charakas via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>>
>> This bug happens with "emacs -q -Q"
>>
>> When completing a single character with completion-at-point (M-C-i) in elsip,
>> after you select the desiered completion, it is inserted in the buffer
>> but some of the following lines are deleted. This does not happen when
>> the line has two characters.
>>
>> Examples are with "emacs -q -Q"
>>
>> Example 1:
>> - Write "(setq foo nil)" in scratch.
>> - Go to the line before that and type "(".
>> - Press M-C-i.
>> - Select any outecome.
>> The (setq foo nil) is no longer there.
>
> Why do you consider this a bug?  The documentation of the command
> says:
>
>   Perform completion on the text around point.
>
> It doesn't tell what it considers to be "text around point", but why
> shouldn't it consider the line you say is deleted as "text around
> point", and therefore replace it with the completion candidate you
> select from the list?

More information was requested, but none was given within 5 weeks, so
I'm closing this bug.  If this is still an issue, please reply to this
email (use "Reply to all" in your email client) and we can reopen the
bug report.