In case anyone would like to try this themselves, I documented what I tried
here:
http://kitchingroup.cheme.cmu.edu/blog/2017/06/10/Adding-keymaps-to-src-blocks-via-org-font-lock-hook/

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu


On Sat, Jun 10, 2017 at 9:58 AM, John Kitchin <jkitchin@andrew.cmu.edu>
wrote:

>
> Nicolas Goaziou writes:
>
> > Hello,
> >
> > John Kitchin <jkitchin@andrew.cmu.edu> writes:
> >
> >> On the other hand, there are times when I am working on a document that
> has
> >> a lot of short code blocks, e.g. for lecture notes or blog posts, where
> it
> >> is sufficiently tedious to me to switch in and out of the special edit
> mode
> >> that I wanted to try this solution out, and it became clear you can't
> >> really try it out without modifying the core org code that does the
> >> font-locking on a block.
> >
> > Are you sure about it? There are two hooks related to fontification:
> > `org-font-lock-set-keywords-hook' and `org-font-lock-hook'. I'm
> > surprised none can help you in this case.
>
> You are totally right on this. I can use org-font-lock-hook to take care
> of this. Thanks for the pointer.
>
> >
> >> I don't think we have to go so far as to say we make multiple major mode
> >> keybindings available, so much as context specific keybindings available
> >> where there is value in it. We already have this in org-speed keys for
> >> example, and even these can be context specific to do different things
> on
> >> headings (even different things on headings with specific properties)
> and
> >> blocks (
> >> http://kitchingroup.cheme.cmu.edu/blog/2016/12/22/Context-
> specific-org-mode-speed-keys/
> >> ).
> >
> > Neat hack.
>
> Thanks!
>
> >
> >> If there was a change to org to enable this, I wouldn't expect the core
> to
> >> change behavior for anyone, it would just make it possible for users to
> >> change this if they wanted to. The same way they can customize the face
> of
> >> a code block for different languages.
> >
> > Fair enough. Would you want to provide a proper patch?
>
> With the hook I don't think it is necessary. Thanks for all the
> discussion though (everyone) it was helpful to think it through.
> >
> > Thank you.
> >
> >
> > Regards,
>
>
> --
> Professor John Kitchin
> Doherty Hall A207F
> Department of Chemical Engineering
> Carnegie Mellon University
> Pittsburgh, PA 15213
> 412-268-7803
> @johnkitchin
> http://kitchingroup.cheme.cmu.edu
>