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When using SO's code blocks, can you control how syntax highlighting is performed? Many times, I've pasted (for example) some shell output into an SO answer, and the syntax highlighting has been completely unrelated. Is there any way to turn it off, or to change the language used?

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migrated from stackoverflow.com Aug 10 '09 at 14:31

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marked as duplicate by Pops Sep 14 at 22:55

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2 Answers 2

up vote 6 down vote accepted

There is a way to completely turn off code highlighting: use <code> tags (I often do this for OCaml/Lisp/Haskell code where unmatched 's cause problems). EDIT: As random pointed out, <pre> will work better than <code>.

Normal highlighting:

return 'a' "x" void

With <pre> it looks like this:

return 'a' "x" void

Keep in mind that with <pre>, you don't need to indent your code by four spaces. For example, the code in this answer is formatted like this:

Normal highlighting:

    return 'a' "x" void

With `<pre>` it looks like this:

<pre>
return 'a' "x" void
</pre>

(Sorry about the highlighting but I can't do this in <pre>...)

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If you want the nice background, use PRE –  random Aug 10 '09 at 14:48
1  
Note that it appears that <!-- language: none --> is now the preferred mechanism to disable syntax highlighting for a preformatted block of text. –  Phrogz Mar 31 '11 at 22:32

You cannot control how the syntax is highlighted.

SO, uses Google's prettify to do the syntax coloring. Prettify uses common language patterns to determine syntax coloring.

For example:

Comments:

// comment
#comment

Strings:

'This is a string'
"So is this"

Key words:

void
return
int 
bool

As Zifre says. You can turn off the syntax highlighting in code by using the <pre> tags around your desired block of code.

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So this is a problem upstream? –  TokenMacGuy Sep 10 '09 at 23:20
    
Hmm... it looks like prettify has the ability to specify a language using a lang-* css class. –  TokenMacGuy Sep 10 '09 at 23:26
    
Didn't work for me.... <pre class="prettyprint lang-html"> made the code a complete mess. –  Joe Casadonte Mar 6 '10 at 13:51

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