Add LESS language support

[calvinjuarez]

What would I have to do to get this to happen?

[ucarion]

@calvinjuarez Perhaps you're looking for Pygments.css? This returns a string that is CSS, but is valid LESS code as well.

[calvinjuarez]

@ulyssecarion Pardon? Would that make it possible for GitHub to highlight blocks of code labeled 'less'? Because that's what I'm looking to do.

[ucarion]

@calvinjuarez Oh, I misunderstood you.

I haven't found any less parsers, but there is a SCSS parser. Would that do it for you? It's definitely not perfect, though. Here is what the Scss parser produces when faced with some LESS (which I got from lesscss.org):

@base: #f938ab;

.box-shadow(@style, @c) when (iscolor(@c)) {
  -webkit-box-shadow: @style @c;
  -moz-box-shadow:    @style @c;
  box-shadow:         @style @c;
}
.box-shadow(@style, @alpha: 50%) when (isnumber(@alpha)) {
  .box-shadow(@style, rgba(0, 0, 0, @alpha));
}
.box { 
  color: saturate(@base, 5%);
  border-color: lighten(@base, 30%);
  div { .box-shadow(0 0 5px, 30%) }
}

If you're limited to strictly GitHub, I think that's the best you can do (though you might want to try both sass and scss, since sometimes one seems to work better than the other for less). Adding direct support for Less would require adding a Less lexer to Pygments itself, which you can learn about here, though that might be tricky to do if you've never made a lexer or used Python before.

Perhaps you may want to voice your interest for a Less lexer in this Pygments issue on Bitbucket.

Hope this helps.