bug#60379: [PATCH] Eglot: don't use "nil" as minibuffer initial input

[Eshel Yaron via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: João Távora <joaotavora@gmail.com>
>> Cc: Eshel Yaron <me@eshelyaron.com>,  60379@debbugs.gnu.org
>> Date: Thu, 12 Jan 2023 10:20:27 +0000
>> 
>> The idea looks sane, but I think 'format-prompt' can't be used if Eglot
>> is to continue supporting Emacs 26 and 27.  Also I'd prefer if the patch
>> is slightly less disruptive to whitespace, like this:
>> 
>> diff --git a/lisp/progmodes/eglot.el b/lisp/progmodes/eglot.el
>> index 15cb1b6fad..eb3b51ed8b 100644
>> --- a/lisp/progmodes/eglot.el
>> +++ b/lisp/progmodes/eglot.el
>> @@ -991,6 +991,7 @@ eglot--guess-contact
>>  non-nil, maybe prompt user, else error as soon as something can't
>>  be guessed."
>>    (let* ((guessed-mode (if buffer-file-name major-mode))
>> +         (guessed-mode-name (and guessed-mode (symbol-name guessed-mode)))
>>           (main-mode
>>            (cond
>>             ((and interactive
>> @@ -1000,7 +1001,7 @@ eglot--guess-contact
>>               (completing-read
>>                "[eglot] Start a server to manage buffers of what major mode? "
>>                (mapcar #'symbol-name (eglot--all-major-modes)) nil t
>> -              (symbol-name guessed-mode) nil (symbol-name guessed-mode) nil)))
>> +              guessed-mode-name nil guessed-mode-name nil)))
>>             ((not guessed-mode)
>>              (eglot--error "Can't guess mode to manage for `%s'" (current-buffer)))
>>             (t guessed-mode)))
>> 
>> Other than that, it's fine to commit.
>
> OK, done, and closing the bug.

Hello João and Eli,

Thanks for looking into it and applying the patch.

> Yaron, this change was small enough to accept without copyright
> assignment, but if you intend to continue contributing to Emacs (and
> we hope you do), I recommend to start your copyright assignment
> paperwork rolling at this time.  If you agree, I will send you the
> form to fill and the instructions to email it.

Alright, please send it over.


Eshel