Fixed test for shell and vi mode

lib/git/aliases_and_bindings.sh

@@ -161,7 +161,7 @@ if [[ "$git_keyboard_shortcuts_enabled" = "true" ]]; then
   case "$TERM" in
   xterm*|rxvt*)
       # Uses emacs style keybindings, so vi mode is not supported for now
-      if ! ([[ $shell == "bash" ]] && set -o | grep -q '^vi .*on$'); then
+      if ! [[ $shell == "bash" ]] || set -o | grep -q '^vi .*on$'; then
         _bind "$git_commit_all_keys" "\" git_commit_all\n\""
         _bind "$git_add_and_commit_keys" "\"\e[1~ git_add_and_commit \n\""
       fi