Re: New version of todo-mode.el (announcement + user guide)

[Stefan Monnier]

> didn't consider the use-case you mention.  I'll try to write a command
> that converts from the new to the old format, but this may not be so

Don't bother.  A conversion forward is important, but a conversion
backward much less so.  Instead it's important to be able to use the
old-style format in newer Emacsen.

>> That sounds like the better solution.  Even better if the old and the
>> new code can be both in use at the same time (e.g. if you have
>> converted some of your todo files but not all).
> I want to be sure what you're saying here: are you saying there's
> something better than making the old version obsolete?  Or are you
> saying it is ok to make it obsolete?

Making it obsolete is fine.

> (Your parenthetical example is a bit confusing, because the old
> version only supports using one todo file at a time.  I guess you
> could have several todos files, but to switch between them you'd have
> to unload todo-mode.el, change the value of todo-file-do and reload
> the package.  The fact that you can simultaneously use multiple todo
> files is another big advantage of the new version -- and probably also
> the main stumbling block in converting from the new to the
> old format.)

I was thinking of the case where the user wants to transition
progressively, so she keeps her old-style todo file but also starts to
use a new-style todo file.
But maybe it's not important to support this use case.

>> It sounds borderline.
> That's a bit intimidating.  Maybe the code Wolfgang Jenkner posted in
> this thread could be used instead -- even better if it were just added
> to Emacs.  Juri Linkov also posted one a little while ago, which was
> actually essentially the same as the Common Lisp recursive definition.
> Is this really subject to copyright?

No, it sounds fine, thank you.  They're all sufficiently trivial.


        Stefan