Re: [PATCH 4/4] git-difftool: use git-mergetool--lib for "--tool-help"

> On Thu, Jan 24, 2013 at 11:55 AM, John Keeping <john@keeping.me.uk> wrote:
> > The "--tool-help" option to git-difftool currently displays incorrect
> > output since it uses the names of the files in
> > "$GIT_EXEC_PATH/mergetools/" rather than the list of command names in
> > git-mergetool--lib.
> >
> > Fix this by simply delegating the "--tool-help" argument to the
> > show_tool_help function in git-mergetool--lib.
> 
> Very nice.
> 
> One thought I had was that the unified show_tool_help should
> probably check TOOL_MODE=diff and skip over the
> !can_diff entries.
> 
> The current output of "git difftool --tool-help" before your
> patches has the problem that it will list tools such as
> "tortoisemerge" as "valid but not available" because it
> does not differentiate between missing and !can_diff.