On Thursday 15 January 2009, Santi Béjar <santi@xxxxxxxxxxx> wrote
about 'Re: [PATCH take 3 0/4] color-words improvements':
>It may be ok and logical, but for me it is not what I want. Mmaybe I
>don't really undestand what I want or is a crazy idea but here it is
>anyway:
The discussion above is mildly theoretical. I don't imagine someone is
going to intentionally mark 98% of a file as non-words, which is basically
what you are doing with a regex of "a+".
>a) primary words are those with alphanumerics (or a regex)
regex: [[:alnum:]]+
example words: matrix ball I a
example non-words: don't haven't
>b) secondary "words" are the other non-whitespaces characters (in this
>case "[]{} and ,"
regex: []{}[,]
example words: [ , }
example non-words: [] ball 147
>c) whitespaces are cruft.
>
>(having two regexp to specify what is a words but they cannot mix).
Combine regex with '|' to get:
[[:alnum:]]+|[]{}[,]
>If everything works as I think (it's late night :-) with the above two
> lines:
>
>matrix[a,b,c]
>matrix{d,b,c}
>
>the word diff would be
>
>matrix<RED>[<GREEN>{<RED>a<GREEN>d<RESET>,b,c<RED>]<GREEN>}<RED>
For this specific case, the regex "[^[:space:]]" by itself should work,
although it would end up being a character-by-character diff.
The regex you built from your description "[[:alnum:]]+|[]}{[,]" would also
give the same diff. However:
-dont
+don't
gives a word diff of:
don't
not:
don<RED>'<RESET>t
because "'" is not recognized as part of any word it is considered
ignorable.
There was a patch that included documentation that most users should add
"|[^[:space:]]" to the end of their regex, to capture all non-whitespace
characters that are not otherwise part of a word as individual,
single-character "words".
--
Boyd Stephen Smith Jr. ,= ,-_-. =.
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ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-'
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