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Re: Feature request/RFC: proper highlighting of code embedded in comment

From: Clément Pit--Claudel
Subject: Re: Feature request/RFC: proper highlighting of code embedded in comments
Date: Sun, 16 Oct 2016 17:05:01 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0

Thanks!  How is the package called? I don't see it list-packages :/

This sounds pretty similar to the solution I outlined before, though.  The 
problem that I ran into with python is that I also need to "reopen" the quotes 
or comments.  For example. a bit of code might be in the middle of a docstring, 
like this:

    def example():

        >>> blah(xyz)

        What a great example!

The issue here is that “What a great example” is a string.  I tried using a 
syntactic face function to mark the last ‘>’ as a strong closer and the newline 
as a string opener, but that confused the existing function, which expects the 
docstring starter to be ‘"""’, not ‘\n’.  Even after fixing this, python-mode 
was unusable: it inflooped when trying to find a whole defun, because the 
nav-end-of-defun function isn't ready to accept ‘\n’ as a string starter.


On 2016-10-16 13:42, Stefan Monnier wrote:
> FWIW, in sm-c-mode.el (in elpa.git), CPP directives are treated as
> comments, and since they do contain code, I have to solve the same kind
> of problem.
> I (ab)use for that purpose a syntactic face function.  The starting
> point is:
>   (setq-local font-lock-syntactic-face-function 
> #'sm-c-syntactic-face-function)
> Take a look at sm-c-syntactic-face-function and especially
> sm-c--cpp-fontify-syntactically to see how I try to re-use the existing
> font-lock functionality.
> It's a bit gross, tho.
>         Stefan

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