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regexp and subvars

Posted by ytak (ytak), 8 June 2005
searching string for specific value and would like regexp to return offsets into the string. Example:
set a ffdoglcdoglfl
regexp -all -indices dog $a b c d
echo $b
7 9
echo $c
-1 -1

why doesnt b equal {2 4} and c equal {7 9}

Bob
bob_schmid@hmis.org

Posted by admin (Graham Ellis), 9 June 2005
on 06/08/05 at 18:00:29, ytak wrote:
why doesnt b equal {2 4} and c equal {7 9}


Because the -all option causes regexp to return the number of matches (it returns 2 in your code) and puts the information for the last match into the match variables if they're specified. See http://tmml.sourceforge.net/doc/tcl/regexp.html.

You'll get the results I think you want (but returned and not it separate variales) if you use the -inline option.

Code:
% regexp -all -indices -inline dog $a
{2 4} {7 9}
%


Posted by ytak (ytak), 9 June 2005
Thank you. That will do it !



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