Unicode Sets in 'Unicode Regular Expressions'

Richard Wordingham richard.wordingham at ntlworld.com
Tue May 27 17:18:22 CDT 2014

UTS#18 'Unicode Regular Expressions' Version 17 Requirement RL1.3
'Subtraction and Intersection' talks of Unicode sets.  What is the
relevant definition of a 'Unicode set'? Is it a finite set of non-empty
strings?  Other possibilities that occur to me, depending on context,
include sets of codepoints and sets of indecomposable codepoints.


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