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   Re: [xml-dev] regular expression question

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> The rationale here could be that since no other character is following
> the hyphen is not used for indication ranges in character classes, but
> as itself.

This is the correct interpretation I believe.



  A single XML character is a ·character range· that identifies the set
  of characters containing only itself. All XML characters are valid
  character ranges, except as follows:
  The - character is a valid character range only at the beginning or
  end of a ·positive character group·. 

which means that you can (should be able to) use - to mean itself as the
last character in a [] group.


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