bug#54804: 29.0.50; zap-to-char: case sensitive for upper-case letter

[Eli Zaretskii]

> From: Tino Calancha <tino.calancha@gmail.com>
> Date: Sat, 09 Apr 2022 00:03:45 +0200
> Cc: uyennhi.qm@gmail.com
> 
> A wishlist for the `zap-to-char' and `zap-up-to-char':
> In interactive calls, when users input an upper-case letter then perform
> a case-sensitive search.
> 
> This behavior is analog to what `isearch' does.

Thanks, but why does the implementation have to be so complicated?
Isn't this just about turning off case-fold-search while searching for
the character?  What am I missing?