in reply to regex doubt on excluding
A question on whitespace is difficult to address as one cannot see the objects of interest. Your regex suggests that in a multiline string you want to replace lines consisting only of whitespaces with truly empty lines. Whitespaces in non-empty lines will be preserved. I am replacing the whitespace with 'x' to see where we got matches:
The result of this would be:use strict; use warnings; my $string = "next line is spaces next line is tabs and now some newlines end"; $string =~ s/^\s*$/x/mg; print "$string\n";
When you say you want to exclude newlines from the match, what is the desired effect you want to see? Preserve multiple empty lines?next line is spaces x next line is tabs x and now some newlines xx end
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Re^2: regex doubt on excluding
by Anonymous Monk on Apr 21, 2014 at 08:44 UTC | |
by hdb (Monsignor) on Apr 21, 2014 at 08:46 UTC | |
by Anonymous Monk on Apr 21, 2014 at 09:43 UTC |
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