Man pages matching name bindtextdomain in section 3:

bindtextdomain.3.en	debian 10 / gettext-base
bindtextdomain.3.zh_CN	debian 10 / manpages-zh
bindtextdomain.3.zh_TW	debian 10 / manpages-zh
bindtextdomain.3.en	debian 11 / gettext-base
bindtextdomain.3.zh_CN	debian 11 / manpages-zh
bindtextdomain.3.zh_TW	debian 11 / manpages-zh
bindtextdomain.3.en	debian 12 / gettext-base
bindtextdomain.3.zh_CN	debian 12 / manpages-zh
bindtextdomain.3.zh_TW	debian 12 / manpages-zh