Make outli--at-heading work anywhere in outline regexp rather than only bol.

[gajama]

Uses 'thing-at-point-looking-at' instead of 'looking-at'. Also adds a check to make sure point is on an outline heading.

[gajama]

Hi, Outli is just the thing I've been looking for to make my less-than-literate Emacs config files prettier and easier to navigate. I was getting slightly annoyed at having to go back to BOL every time I wanted to use a speed-key, and I think this PR improves the experience. What do you think?

[jdtsmith]

Thanks, I use it for .emacs too, really great there. One concern with your approach: how do you actually edit the headline? Org has a trick of setting org-use-speed-commands to a function, e.g.:

(lambda () (and (looking-at org-outline-regexp) (looking-back "^\**")))

which makes speed keys work in any of the * chars, not just strictly at the left. I think a more general approach like this (i.e. user defines a function to determine when speed keys are "active") would be more suitable for different users.

[gajama]

It doesn't affect the headline. It only increases the area where the speed keys work to be the whole of the regexp, rather than having to be strictly at BOL.

[jdtsmith]

I see, I think that's similar to the org config I showed and it's something I've wanted myself. I do prefer not to load up thingatpt just for this simple thing; see d054144. Please give this some testing.