bug#14175: 24.3.50; Bad completion behavior with read-file-name-completion-ignore-case t

[Stefan Monnier]

> When you hit TAB the second time, this call in
> `completion--nth-completion' changes the result from ("download/"
> "Downloads/") to ("Download/" "Downloads/"):

>    (if requote
>         (funcall requote result n)
>       result)

Hmmm........

Indeed we have a problem.  Usually "completion-ignore-case" as you
expect means "feel free to change my input's case to match the
completions".  But the "quote/requote" thingy generally tries to
preserve the user's input (e.g. so as to keep $HOME rather than replace
it with /home/monnier), which is why here it also preserves the
user's case.

Not sure yet how best to fix this bug.


        Stefan