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I have coc.vim installed and added suggested mappings, then I installed vim-fugitive and I want to remap the "Toggle an inline diff of the file under the cursor." fugitive_= to Tab but the coc.vim is using tab for completion.
How I can map the Tab to fugitive_= only when I enter to vim-fugitive :GStatus?
You can use the <buffer> argument to restrict a map to a certain filetype, see :help :map-local for details.
Fugitive's status filetype is fugitive, so you can try:
augroup FugitiveMappings
autocmd!
autocmd FileType fugitive nmap <buffer> <Tab> =
augroup
You can also call the right function instead of mapping <Tab> to = (which I think is what you want to do).
If you have a bunch of Fugitive's related customizations you can put all of them in ~/.vim/ftplugin/fugitive.vim (or $XDG_COFIG_HOME/nvim/init.vim if you use Neovim) as @filbranden suggested. You don't need the auto commands if you use this method
ftplugin file such as ~/.vim/ftplugin/fugitive.vim for the nmap command, rather than an autocmd FileType...
augroup (for those who don't know about it). @filbranden I ever wondered if it was better or more reliable to use ftplugin. To me, it seems to be a hassle to have more files where I can have only one.
~/.vim and it's easy to manage your whole ~/.vim in git, I think it makes all sense to just use more separate files rather than a single big monolithic config.
ftplugin, that's interesting, I will try to look it up. BTW thanks for the suggestion.