Mikael Magnusson wrote:
> 2008/9/26 Wincent Colaiuta <win@xxxxxxxxxxx>:
>> It's a shame that tcl/tk regular expressions don't appear to support
>> anchoring matches against word boundaries (ie. "\b").
>
> \y appears to achieve this;
>
> % regexp {abc\y} 'abc'
> 1
> % regexp {abc\y} 'abcd'
> 0
> % regexp {\yabc\y} 'uabc,d'
> 0
> % regexp {\yabc\y} 'u+abc,d'
> 1
>
> I have tcl/tk 8.5 so I cannot promise that isn't a new addition, I didn't
> look it up anywhere, but it's \y in some other implementations too, so I
> tried it.
It goes back at least as far as tcl/tk 8.2:
http://www.tcl.tk/man/tcl8.2.3/TclCmd/re_syntax.htm#M54
-Brad
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