No duplicate completion for diff programs

.config/zsh/.zshrc

@@ -107,6 +107,8 @@ comp-source() {
 
     zstyle -e ':completion:*:users' users 'local user; getent passwd | while IFS=: read -rA user; do (( user[3] >= 1000 || user[3] == 0 )) && reply+=($user[1]); done'
     _comp_options+=(globdots) # Include hidden files
+    # Don't complete the same twice for diff/meld (http://leahneukirchen.org/dotfiles/.zshrc)
+    zstyle ':completion:*:(diff|meld):*' ignore-line yes
 
 
 ## Load external config files and modules