[TxMt] Re: Combined diff and source code highlighting

[Jacob Carlborg]

On 2015-01-18 14:07, Allan Odgaard wrote:

> The problem is that you only have a subset of the file in a diff and
> TextMate’s grammars will often work on larger structures.
>
> Take the JSON grammar where we highlight misplaced commas, such rules
> can’t work when we just get a random line of a JSON file.

I tried to add the Diff rules in the D grammar, it wasn't perfect but 
ok. But it was not a general solution.

How would that be any difference if that's only what a user has typed in 
a regular JSON file?

For languages with keywords only typing a keyword is necessary to get 
highlighting. I think that would help.

> For proper diff highlighting, we need to highlight the two source files
> separately, then grab the highlighted subsets for the diff.

Anyway, Github recently added this feature. I don't know how they did it 
but to me it looks good.

-- 
/Jacob Carlborg