regexp for TCL 8.0

From: Phil Biehl (fylbeall_at_yahoo.com)
Date: 10/29/04 

Date: Fri, 29 Oct 2004 14:57:33 -0700

I'm having to convert some TCL 8.4 code down to the 8.0 version and am
having difficulty with an RE that works fine in 8.4 but fails in 8.0. I'm a
little embarassed because this seems simple but I can't seem to find an
answer that works.

I have a string that is in the form of: aaaa,1234,5678

I want to pick out the middle integer, 1234.

My code of the 8.4 persuasion looks like this: regexp {,(\d+),} $a b c
where $a is aaaa,1234,5678.

I'm assuming that \d is not supported in 8.0 as a decimal digit. What will
make this work in 8.0?

Also, is there a RE reference I can get that will explain the syntax ass it
pertains to 8.0? I know about the manpage at:
http://www.tcl.tk/man/tcl8.0/TclCmd/regexp.htm

Thanks!
Phil

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