bug#7567: Please add a history variable to read-regexp

[Juri Linkov]

> No answer. Was something unclear here?

Why so impatient, you waited for the answer only half a day :)

> The current read-regexp use is problematic for example in
> multi-isearch-read-matching-buffers and
> multi-occur-in-matching-buffers. I think a common history variable
> could be used for those cases, but they currently use the default
> regexp-history variable which seems totally inappropriate.

`regexp-history' is a common history variable for all commands
that read a regexp from the minibuffer.  I don't understand
what is wrong with that?