[BUG] cElementTree can't handle attributes with tabs

[Aaron Bentley]

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Aaron Bentley wrote:
> John Arbash Meinel wrote:
>>> Aaron Bentley wrote:
>>>>> Oh, well tabs are illegal in XML.
>>> As in you are supposed to escape them, or how are you supposed to
>>> represent them with an XML attribute?
> 
> As in totally illegal.  Not escaped, not as CDATA.  Just not permitted.
>  It's the same restriction for all ASCII control characters, with
> exceptions for CR and LF, and I forget what else.

I am mistaken.  Sorry about that.

This is the relevant section:
http://www.w3.org/TR/REC-xml/#charsets

[2]   	Char	   ::=   	#x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD]
| [#x10000-#x10FFFF]

So x9 is one of the few permitted ascii control characters.

Aaron
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