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

[Eli Zaretskii]

> Cc: Basil Contovounesios <contovob@tcd.ie>, 44418@debbugs.gnu.org,
>  Lars Ingebrigtsen <larsi@gnus.org>, monnier@iro.umontreal.ca
> From: Yuan Fu <casouri@gmail.com>
> Date: Sat, 8 Jul 2023 16:48:57 -0700
> 
> I agree that it’s easy to figure out what does the detached @ syntax mean. I 
> mainly just don’t like having two ways to do the same thing.
> 
> Since I don’t use search symbol myself, I can’t grasp the importance of it. 
> You apparently care about it enough to go this far, and I’m willing to take 
> your word for it.
> 
> You mentioned sexp queries, which reminded me that using the detached syntax 
> would allow people to interpolate capture names with quasi quotes. That’s a 
> plus for the detached syntax.
> 
> Ultimately I’m still on the fence for this. But if you still want to add it, 
> please go ahead :-)

I'd like to hear Stefan's opinion on this, before we make such a
change (if we make it).