Hello Januk,
Wednesday, January 31, 2001, 12:47:23 AM, you wrote:
JA> Hello Silver,
JA> Historians believe that Tue, 30 Jan 2001 at 21:23 GMT -0800 was when,
JA> Silver Fox [SF] typed the following:
SF>> Just wanted to thank you guys! After three days of reading and a few hours
SF>> of trial and error, I set figured out my first Regex, and I _almost_
SF>> completely understand it.
JA> That's great. Congratulations.
JA> <snip>
SF>> %SETPATTREGEXP="(?is).*(^.*in the amount of.*?$)"
SF>> %REGEXPBLINDMATCH="%TEXT"
SF>> %SUBPATT="1"
SF>> %SUBPATT="2"
JA> Note the subpatterning here. Subpatterns are defined by the round
JA> brackets, with the exception of "(?" constructions. So, count the
JA> number of "(", and that will tell you the subpattern number. In your
JA> example, you only have one set of round brackets that define a
JA> subpattern. This is a special case, and for this reason, it is
JA> causing some of your confusion. See below.
JA> <snip>
SF>> I still don't understand entirely what the subpatterns do for me. I've
SF>> learned that replacing %REGEXPBLINDMATCH with %REGEXPMATCH allows me to just
SF>> remove %SUBPATT="1" AND %SUBPATT="2"
JA> You only have one subpattern so Subpattern 2 is empty. You can
JA> remove it from either case and everything will work.
JA> %REGEXPMATCH returns Subpattern 1 if not empty, otherwise it
JA> returns subpattern 0. Now in your case, the only non-empty
JA> subpatterns are 0 and 1, so you're not seeing the difference.
SF>> I've got a couple three ideas of what this could possibly be used for, but I
SF>> don't quite get it.
JA> Put this into a test template, and try exploring. Try to guess what
JA> the output would be when the template is applied in a reply. Perhaps
JA> it will elucidate the situation.
JA> <template>
JA> %SETPATTREGEXP="^(.*)(@)(.*)$"%REGEXPBLINDMATCH="%OFROMADDR"
JA> %%RegexpBlindMatch gives me:
JA> Subpattern 0: <%Subpatt="0">
JA> 1: <%Subpatt="1">
JA> 2: <%Subpatt="2">
JA> 3: <%Subpatt="3">
JA> 4: <%Subpatt="4">
JA> While %%RegexpMatch gives me:
JA> %SETPATTREGEXP="^(.*)(@)(.*)$"%REGEXPMATCH="%OFROMADDR"
JA> </template>
SF>> If this may help focus an answer, this is what the help file says about
SF>> them:
SF>> %REGEXPBLINDMATCH=�string� is like %REGEXPMATCH=�string� macro except
SF>> matched string/substrings are not returned, they may be further extracted by
SF>> %SUBPATT="n" macro where n is a number of captured substring; 0 means text
SF>> matching entire regexp pattern, 1 - matching first subpattern, 2 - second
SF>> subpattern,. etc.... Thus this %REGEXPBLINDMATCH=�string� macro allows more
SF>> then one subpatterns e.g.
JA> <snip>
JA> Did I clear up the confusion with this part of the help file? Or not
JA> yet?
Yup. The brackets defines each "subpattern" (a variable that stores
a string) and using %SUBPATT="n" later in the template will insert the
string at that point. Since my original template had the regex
followed by the subpatt immediately, I did not realize that subpatt
was returning something. I was under the impression that one of the
%REGEXP's were.
Clear as a bell now. Thanx, this will help a lot.
--
Best regards,
Silver mailto:[EMAIL PROTECTED]
--
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