Man pages matching name vimdiff in section 1:

vimdiff.1.da	debian 10 / vim-common
vimdiff.1.en	debian 10 / vim-common
vimdiff.1.fr	debian 10 / vim-common
vimdiff.1.it	debian 10 / vim-common
vimdiff.1.ja	debian 10 / vim-common
vimdiff.1.pl	debian 10 / vim-common
vimdiff.1.ru	debian 10 / vim-common
vimdiff.1.da	debian 11 / vim-common
vimdiff.1.en	debian 11 / vim-common
vimdiff.1.fr	debian 11 / vim-common
vimdiff.1.it	debian 11 / vim-common
vimdiff.1.ja	debian 11 / vim-common
vimdiff.1.pl	debian 11 / vim-common
vimdiff.1.ru	debian 11 / vim-common
vimdiff.1.da	debian 12 / vim-common
vimdiff.1.en	debian 12 / vim-common
vimdiff.1.fr	debian 12 / vim-common
vimdiff.1.it	debian 12 / vim-common
vimdiff.1.ja	debian 12 / vim-common
vimdiff.1.pl	debian 12 / vim-common
vimdiff.1.ru	debian 12 / vim-common
vimdiff.1.tr	debian 12 / vim-common