[Linux-disciples] Perl: displaying the part of a match that failed

[Chung-chieh Shan]

On 2005-06-24T13:48:09-0400, Stephen R Laniel wrote:
> As I mentioned, I'm writing a hackish little CSS parser,
> using regular expressions to encode the grammar -- e.g.,
> something like
> 
> my $block = qr/$openBrace\s*${statement}\s*$closeBrace/;
> my $statement = qr/${property}\s*:\s*$value;/;
> etc.
> 
> If a stylesheet file doesn't match the regex, I'd like Perl
> to display for me the part of the file that failed to match.
> Is this possible?

I don't understand what "the part of the file that failed to match"
means.  What part of "abcde" failed to match /^.*f.*$/ ?

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