On Mar 28, 2012, at 11:19 PM, Bill Vlahos wrote:
> I am building a regular expression to find a set of question marks and
> exclamation points. For example ??? or !!!.
>
> These are special characters so they mean something to a regular expression.
>
> How do I find them in the text?
>
> If I want to find a word such as "Bill" I can matchText with (\bBill\b) but I
> can't do (\b!!!\b) and if I do (\b???\b) I get an error.
>
> I've looked on the web for escaping characters and they suggest using a slash
> before. However, when I try (\b\!\!\!\b) it doesn't work.
>
> I've also found references to \Q…\E to have everything between a literal but
> (\b\Q!!!\E\b) doesn't work either.
>
> Any ideas?
I have a bias (often warranted) towards using LC's text and chunking
capabilities rather than LC. If you know that the runs of question marks and
exclamation points will alway be length = 3 then you could avoid Regex:
put offsets("???",tText) into qOffsets
put offsets ("!!!",tText) into eOffsets
-- do something with these lists
function offsets str,cntr
-- returns a comma-delimited list of all the offsets of str in cntr
if str is not in cntr then return 0
put "" into offsetList
put 0 into startPoint
repeat
put offset(str,cntr,startPoint) into thisOffset
if thisOffset = 0 then exit repeat
add thisOffset to startPoint
put startPoint & comma after offsetList
end repeat
delete last char of offsetList
return offsetList
end offsets
-- Peter
Peter M. Brigham
pmb...@gmail.com
http://home.comcast.net/~pmbrig
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