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I was reading this question, and the code is displaying all in red (the colour normally reserved for strings).

I could perhaps understand no syntax highlighting (though the question is tagged Python), but why red?

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2 Answers 2

up vote 2 down vote accepted

It's using the tag to do the syntax highlighting, not the tag:

<pre class="lang-regex prettyprint">
  <code>
    <span class="str">import re<br>

Given the list of languages in Changes to syntax highlighting, which does include Python (as py), it seems Python is not recognized as a language (yet) to get it the correct lang-py class.

Though it is in Jeff's list, Python-only questions currently use default rather than lang-py, like:

<pre class="default prettyprint">
  <code>
    <span class="pln">... </span>

Even more surprising: it seems to me that lang-regex is not even supported by Prettify? But I guess I'm looking at some old list.

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2  
But why? I thought if a question had two language tags, it would use "default". –  sepp2k Dec 16 '10 at 21:09
    
Aha, maybe python needs to be known as py, to be recognized as Python, @sepp2k? Other Python-only questions, example, seem to be rendered as default, not as lang-py. –  Arjan Dec 16 '10 at 21:19
    
Strange. [python] shows up in Jeff's list of tag mappings (line 12), but maybe something went wrong with it –  Michael Mrozek Dec 16 '10 at 21:27
    
I was just looking at that list too, @Michael. Surely regex is there too, but I fail to find any clue about support for lang-regex in the list of Prettify-supported languages... –  Arjan Dec 16 '10 at 21:32

We have switched both python and regex to use the "default" prettify syntax highlighting. Regex was supported in prettify however wasn't creating the most ideal output.

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Did you already make that switch 30 minutes ago? As then Python was already rendering as default anyhow -- which seems odd, unless of course you were working on it. –  Arjan Dec 16 '10 at 21:52
    
Python was already set to default. –  Geoff Dalgas Dec 16 '10 at 22:14
    
What's the reason for setting python to default? Doesn't that mean that if I tag a question e.g. C# and python ("What's the python equivalent for this C# feature"), it'll be highlighted as C#? Wouldn't this problem just as easily be fixed by setting python to python, so python+regex gives the default highlighting because it has two language tags? –  sepp2k Dec 17 '10 at 12:53
    
What's the reason for setting Python to "default"? Does this mean that "<!-- language: lang-py -->" has no effect? I'm confused because Jeff has included "lang-py" in this list and this list but not in this list, this list or this list. –  ShreevatsaR Jun 18 '11 at 1:59

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