GNU bug report logs - #76606
30.1; Conflict between completion-preview and yasnippet

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Message #11 received at 76606 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Vincent Foley <vfoley <at> gmail.com>, Eshel Yaron <me <at> eshelyaron.com>,
 João Távora <joaotavora <at> gmail.com>
Cc: 76606 <at> debbugs.gnu.org
Subject: Re: bug#76606: 30.1; Conflict between completion-preview and yasnippet
Date: Thu, 27 Feb 2025 10:36:03 +0200

> From: Vincent Foley <vfoley <at> gmail.com>
> Date: Wed, 26 Feb 2025 20:29:16 -0330
> 
> In Emacs 30.1, completion-preview and yasnippet appear to conflict with
> each other. In a c-mode buffer with eglot, yasnippet, and
> completion-preview enabled, accepting a completion from
> completion-preview with M-i inserts the formal parameters over and over
> again.
> 
>         // Initial state -- cursor is at the pipe (|);
>         int add(int x, int y) { return x + y; }
>         int f(void) { |
> 
>         // Type "add"; completion-preview activates and proposes a
>         // completion (the text `(int x, int y)` is not actual text,
>         // but an overlay in a lighter color and underlined.)
>         int add(int x, int y) { return x + y; }
>         int f(void) { add|(int x, int y)
> 
>         // Pressing M-i to accept the completion moves the cursor
>         // inside the parentheses, but confusingly creates a copy
>         // of the parameters outside the parentheses.
>         int add(int x, int y) { return x + y; }
>         int f(void) { add(|int x, int y)int x, int y)
> 
>         // Pressing M-i again adds more text to the end of the line
>         int add(int x, int y) { return x + y; }
>         int f(void) { add(|int x, int y)int x, int y), int y)
>         
> The following init.el should be sufficient to reproduce the bug.
> I used the clangd LSP from the Debian apt repositories.
> 
>         (package-initialize)
>         (use-package eglot
>           :hook (c-mode . eglot-ensure))
>         (use-package completion-preview
>           :hook (c-mode . completion-preview-mode))
>         (use-package yasnippet
>           :hook (c-mode . yas-minor-mode))

Thanks, I'm adding Eshel and João to this discussion.

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