Man pages matching name regex in section 7:

regex.7.en	debian 10 / manpages
regex.7.es	debian 10 / manpages-es
regex.7.it	debian 10 / manpages-it
regex.7.ja	debian 10 / manpages-ja
regex.7.pt	debian 10 / manpages-pt
regex.7.zh_TW	debian 10 / manpages-zh
regex.7.zh_CN	debian 10 / manpages-zh
regex.7.en	debian 11 / manpages
regex.7.es	debian 11 / manpages-es
regex.7.it	debian 11 / manpages-it
regex.7.ja	debian 11 / manpages-ja
regex.7.pt	debian 11 / manpages-pt
regex.7.zh_TW	debian 11 / manpages-zh
regex.7.zh_CN	debian 11 / manpages-zh
regex.7.en	debian 12 / manpages
regex.7.es	debian 12 / manpages-es
regex.7.it	debian 12 / manpages-it
regex.7.ja	debian 12 / manpages-ja
regex.7.zh_TW	debian 12 / manpages-zh
regex.7.zh_CN	debian 12 / manpages-zh
regex.7.en	debian 13 / manpages
regex.7.de	debian 13 / manpages-de
regex.7.es	debian 13 / manpages-es
regex.7.fr	debian 13 / manpages-fr
regex.7.it	debian 13 / manpages-it
regex.7.ja	debian 13 / manpages-ja
regex.7.ro	debian 13 / manpages-ro
regex.7.zh_TW	debian 13 / manpages-zh
regex.7.zh_CN	debian 13 / manpages-zh