Update to latest pygments

[bkeepers]

Ran rake vendor:update.

There is one failing test that seems like a legitimate failure. The test was added in d6a8f2af7d20eb71184d6bd7ca60e00501146e88, which appears to be testing pipes and not necessarily the expected output.

[26/48] PygmentsHighlightTest#test_highlight_works_with_single_character_input = 0.01 s                    
  1) Error:
test_highlight_works_with_single_character_input(PygmentsHighlightTest):
MentosError: Traceback (most recent call last):
  File "/Users/brandon/github/pygments.rb/lib/pygments/mentos.py", line 303, in start
    res = self.get_data(method, lexer, args, kwargs, text)
  File "/Users/brandon/github/pygments.rb/lib/pygments/mentos.py", line 171, in get_data
    res = self.highlight_text(text, lexer, formatter_name, args, _convert_keys(opts))
  File "/Users/brandon/github/pygments.rb/lib/pygments/mentos.py", line 122, in highlight_text
    lexer = self.return_lexer(lexer, args, kwargs, code)
  File "/Users/brandon/github/pygments.rb/lib/pygments/mentos.py", line 102, in return_lexer
    return lexers.guess_lexer(code, **inputs)
  File "/Users/brandon/github/pygments.rb/vendor/pygments-main/pygments/lexers/__init__.py", line 242, in guess_lexer
    raise ClassNotFound('no lexer matching the text found')
ClassNotFound: no lexer matching the text found

[bkeepers]

/cc @tnm @tmm1 @rick @arfon

[thomasboyt]

:+1: it's not in the Pygments changelog, but this also includes a new Handlebars lexer.

[cstrahan]

The NixOS project could really benefit from the new tokenizer in the latest pygments, which would bring syntax highlighting to tens of thousands of Nix packages.

@tmm1 If this PR looks good, would you mind merging and rolling a new release, please?

[cstrahan]

/cc @tnm @rick @arfon

[rick]

Not sure why I didn't see the original cc: -- yay Inbox 3000.

Confirmed that I still see that test failure locally. I'll :eyes: this and see if any wisdom arises.

[rick]

That test will pass if we provide a lexer argument:

diff --git a/test/test_pygments.rb b/test/test_pygments.rb
index 61df666..37c9835 100644
--- a/test/test_pygments.rb
+++ b/test/test_pygments.rb
@@ -88,7 +88,7 @@ class PygmentsHighlightTest < Test::Unit::TestCase
   end

   def test_highlight_works_with_single_character_input
-    code = P.highlight("a")
+    code = P.highlight("a", :lexer => 'rb')
     assert_match 'a</span>', code
   end

@@ -283,5 +283,3 @@ class PygmentsConfigTest < Test::Unit::TestCase
     assert list['Html'][:aliases].include?('html')
   end
 end
-
-

I'm coming at this very fresh, though, so I don't know if requiring a test change is a bad sign, something related to the upgrade, or just noise.

[cstrahan]

@rick Thanks for looking into this!

[bkeepers]

Done in #127