git-mergetool: remove redundant assignment
[gitweb.git] / git-mergetool--lib.sh
index f013a0350665e8c11b52853b5794631dcf7694d0..1748315bc2b45db2b078a3ff293f779d18f7026d 100644 (file)
@@ -174,6 +174,42 @@ list_merge_tool_candidates () {
        esac
 }
 
+show_tool_help () {
+       list_merge_tool_candidates
+       unavailable= available= LF='
+'
+       for i in $tools
+       do
+               merge_tool_path=$(translate_merge_tool_path "$i")
+               if type "$merge_tool_path" >/dev/null 2>&1
+               then
+                       available="$available$i$LF"
+               else
+                       unavailable="$unavailable$i$LF"
+               fi
+       done
+       if test -n "$available"
+       then
+               echo "'git mergetool --tool=<tool>' may be set to one of the following:"
+               echo "$available" | sort | sed -e 's/^/ /'
+       else
+               echo "No suitable tool for 'git mergetool --tool=<tool>' found."
+       fi
+       if test -n "$unavailable"
+       then
+               echo
+               echo 'The following tools are valid, but not currently available:'
+               echo "$unavailable" | sort | sed -e 's/^/       /'
+       fi
+       if test -n "$unavailable$available"
+       then
+               echo
+               echo "Some of the tools listed above only work in a windowed"
+               echo "environment. If run in a terminal-only session, they will fail."
+       fi
+       exit 0
+}
+
 guess_merge_tool () {
        list_merge_tool_candidates
        echo >&2 "merge tool candidates: $tools"