comment on

Interesting.

The docs indicate that the s flag causes the input string to be treated as if it's a single line. The m flag, on the other hand, causes the string to be treated as if it's multi-line.

It seems that .*? can't cross the newline character when using the m flag:

# doesn't match
my ($span_m) = $str =~ /(\d\d.*?\d\d)/m;

# matches
my ($span_m) = $str =~ /(\d\d.*?\n.*?\d\d)/m;

# so does
my ($span_m) = $str =~ /(\d\d\w+\s\w+\d\d/m;
[download]

Treating the \n as whitespace (or explicitly naming it in the regex) seems to solve the problem. Any ideas why that'd be the case?

-- Tanalis
#include www.liquidfusion.org.uk

In reply to Re^3: Passing variables into regular expressions by Tanalis
in thread Passing variables into regular expressions by wanderer

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