bug#44418: 28.0.50; Spliced variable not matched as symbol in isearch

[Yuan Fu <casouri@gmail.com>]

Mattias Engdegård <mattias.engdegard@gmail.com> writes:

>> Maybe we can introduce (@ NAME) as alternative syntax?
>
> Here is a proof-of-concept (missing tests and documentation), but it works and I think it's a definite improvement.
>
> Maybe we can get a blessing from Yuan Fu. To recap, this permits the
> syntax (@ symbol-name) as an alternative to @symbol-name in treesit
> queries because that allows symbol searching to match the symbol-name,
> and this can be really helpful.

I want to point out that a) this will add complexity and make the syntax
harder to read and learn (however minuscule the impact might be); b) is
not enough by itself to make isearch symbol work with capture names:
whoever write the code must _use_ this syntax; and c) I don’t think
isearch symbol itself is popular/important enough to justify the change.

Yuan