Re: Don't change "+" syntax in guix/.dir-locals.el

[ludo@gnu.org (Ludovic Courtès)]

Hello!

Alex Kost <alezost@gmail.com> skribis:

> Pierre Neidhardt (2018-05-20 21:57 +0200) wrote:
>
>> I recently noticed that guix-devel-mode misbehaved on packages ending
>> with a "+" (like my recent emacs-image+).
>>
>> See https://github.com/alezost/guix.el/issues/24 for more details.
>>
>> Alex Kost suggested we removed the syntax change in .dir-locals.el:
>>
>>    ;; This notably allows '(' in Paredit to not insert a space when the
>>    ;; preceding symbol is one of these.
>>    (eval . (modify-syntax-entry ?~ "'"))
>>    (eval . (modify-syntax-entry ?$ "'"))
>> -  (eval . (modify-syntax-entry ?+ "'"))
>
> Here is my point: I believe (re-search-forward "\\s_" nil t) should find
> "+" character in lisp/scheme modes because it may be part of symbol
> names there.  Even elisp manual mentions this fact:
>
> https://www.gnu.org/software/emacs/manual/html_node/elisp/Syntax-Class-Table.html#Syntax-Class-Table
>
> So I think that ".dir-locals.el" shouldn't break this default behavior.

So, IIUC, we may have to sacrifice highlighting of #+ so that
‘guix-guile-current-definition’ works well with symbols containing ‘+’,
right?

That’d be fine with me.  :-)

Thank you!

Ludo’.