fixed '<prefix> + e' binding when EDITOR is set to 'gvim' or 'mvim', fixes #416

Author: gpakosz

.tmux.conf

@@ -24,7 +24,7 @@ setw -q -g utf8 on
 set -g history-limit 5000                 # boost history
 
 # edit configuration
-bind e new-window -n "~/.tmux.conf.local" "sh -c '\${EDITOR:-vim} ~/.tmux.conf.local && tmux source ~/.tmux.conf && tmux display \"~/.tmux.conf sourced\"'"
+bind e new-window -n "~/.tmux.conf.local" "EDITOR=\${EDITOR//mvim/vim} && EDITOR=\${EDITOR//gvim/vim} && \${EDITOR:-vim} ~/.tmux.conf.local && tmux source ~/.tmux.conf && tmux display \"~/.tmux.conf sourced\""
 
 # reload configuration
 bind r source-file ~/.tmux.conf \; display '~/.tmux.conf sourced'