Modify grep to stop pane switch freeze

More information can be found here: christoomey/vim-tmux-navigator#299

tmux/tmux.conf

@@ -26,8 +26,8 @@ bind -r L resize-pane -R 5
 
 # Smart pane switching with awareness of Vim splits.
 # See: https://github.com/christoomey/vim-tmux-navigator
-is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
-    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
+
+is_vim="ps -a | grep -qE '#{s|/dev/||:pane_tty}''.*(n?)vim'"
 bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h'  'select-pane -L'
 bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j'  'select-pane -D'
 bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k'  'select-pane -U'
@@ -36,7 +36,7 @@ bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l'  'select-pane -R'
 tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
 if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
     "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
-if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
+		if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
     "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"
 
 bind-key -T copy-mode-vi 'C-h' select-pane -L