Attached: v2 of this patch

This patch marks only the following characters as
punctuation: !%^~:,

I removed . because it is commonly used in command names
(e.g., mkfs.ext4).

(Excluding '.' not only covers the majority of command and
function names but also prevents using ,!%^~: as
symbol constituents, resulting in more accurate
variable symbols.)

--
James Cherti
GitHub: https://github.com/jamescherti
Website: https://www.jamescherti.com/

On 2025-04-13 05:45, Eli Zaretskii wrote:
>> Date: Fri, 11 Apr 2025 10:55:02 -0400
>> From: James Cherti <contact@jamescherti.com>
>>
>> In sh and Bash, the characters !%^~:.,= and are not valid in variable or
>> function names.
>>
>> Assigning them the "_" syntax causes Emacs to treat them as word
>> constituents, disrupting navigation and completion
>> (e.g. dabbrev-expand, forward-word, etc.).
>>
>> The attached patch updates the syntax table in sh-mode to mark
>> these characters as punctuation, correcting the issue.
> 
> Thanks.
> 
> TBH, such a change sounds scary, as it could cause all kinds of
> unintended changes in behavior.
> 
> I've added a couple of people who might know this mode better than I
> do, in the hope that they will have comments or opinions.