Re: Small improvements to ruby-mode

[Dmitry Gutov]

On 09.07.2013 18:36, Bozhidar Batsov wrote:
> I've noticed two more font look issues (I guess I'm becoming annoying :-) ):

Not really. The novelty of seeing a Ruby user in emacs-devel still 
hasn't worn off. :)

You might want to start filing new reports as bugs, though.

> - ?c, ?x, ?\n, ?\C-\M-d, etc should be font-locked as strings I guess,
> since from Ruby 1.9 the character literal syntax actually yields strings.

It will be the right thing to do, but handling the backslashes and key 
chords looks kind of complicated.

> - there should be support for the new %I/%i literals from Ruby 2.0 - I
> guess we should font-lock them as symbols

I guess we should, but it's kind of complicated. The point of using 
percent literals is that you can put any stuff, at all, inside, and the 
only suitable Emacs syntax classes for that are strings and comments.

We should be able to overwrite that highlighting in 
ruby-font-lock-keywords, but I don't see a good way to do that, yet. 
This facility works with regexp-based search, and we need to effectively 
say "highlight from here and till the end of the string literal".