Upgrade to Glib-2.82.2 Breaks Regex and Other Options in mc.ext.ini

[lap]

After upgrading to glib-2.82.2 on my Gentoo system I can no longer open files according the the regex specified in mc.ext.ini.

For example, my mc.ext.ini specifies:

[C/C++]
Regex=\.(c|cc|cpp|cxx|c\+\+)$
RegexIgnoreCase?=true
Include=editor

But clicking on a C source file will not open the file with the editor as was previously possible.

[andrew_b]

I know, it's too hard to use search.
#4603, #4502