Terminal navigation in Vim now also checks if Tmux has been launched, and reverts to default if Tmux has not been launched (#432)

Author: francescoVaglienti

Diff for: plugin/tmux_navigator.vim

@@ -21,11 +21,12 @@ if !get(g:, 'tmux_navigator_no_mappings', 0)
   nnoremap <silent> <c-l> :<C-U>TmuxNavigateRight<cr>
   nnoremap <silent> <c-\> :<C-U>TmuxNavigatePrevious<cr>
   
-
-  tnoremap <expr> <silent> <C-h> IsFZF() ? "\<C-h>" : "\<C-w>:\<C-U> TmuxNavigateLeft\<cr>"
-  tnoremap <expr> <silent> <C-j> IsFZF() ? "\<C-j>" : "\<C-w>:\<C-U> TmuxNavigateDown\<cr>"
-  tnoremap <expr> <silent> <C-k> IsFZF() ? "\<C-k>" : "\<C-w>:\<C-U> TmuxNavigateUp\<cr>"
-  tnoremap <expr> <silent> <C-l> IsFZF() ? "\<C-l>" : "\<C-w>:\<C-U> TmuxNavigateRight\<cr>"
+  if !empty($TMUX)
+    tnoremap <expr> <silent> <C-h> IsFZF() ? "\<C-h>" : "\<C-w>:\<C-U> TmuxNavigateLeft\<cr>"
+    tnoremap <expr> <silent> <C-j> IsFZF() ? "\<C-j>" : "\<C-w>:\<C-U> TmuxNavigateDown\<cr>"
+    tnoremap <expr> <silent> <C-k> IsFZF() ? "\<C-k>" : "\<C-w>:\<C-U> TmuxNavigateUp\<cr>"
+    tnoremap <expr> <silent> <C-l> IsFZF() ? "\<C-l>" : "\<C-w>:\<C-U> TmuxNavigateRight\<cr>"
+  endif
 
   if !get(g:, 'tmux_navigator_disable_netrw_workaround', 0)
     if !exists('g:Netrw_UserMaps')