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Re: use of $*

by ikegami (Pope)
on Aug 01, 2014 at 11:50 UTC ( #1095889=note: print w/replies, xml ) Need Help??

in reply to use of $*

It was the same as using /m on all your match and substitution operators, except it overrode instructions to turn /m off.

For example, qr/foo$/ shouldn't match "foo\nbar\n" even if it's used as /$re/m.

$ perl5010 -le' $re = qr/foo$/; print $re; print "foo\nbar\n" =~ /$re/m ?1:0 ' (?-xism:foo$) # -m: Turn /m off. 0

But it did before 5.10

$ perl5008009 -le' $re = qr/foo$/; print $re; print "foo\nbar\n" =~ /$re/m ?1:0 ' (?-xism:foo$) 1 # Matched as if /m was on for the subpattern.

This was fixed, but there was no way of fixing $* which had the same error.

$ perl5008009 -le' $re = qr/foo$/; print $re; local $* = 1; print "foo\nbar\n" =~ /$re/ ?1:0 ' (?-xism:foo$) 1

So it was dropped.

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Re^2: use of $*
by millan123 (Initiate) on Aug 01, 2014 at 12:49 UTC
    can you pls let me know what does this code do?
    $* = 1
      See Re: use of $* for an answer.
      لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

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[Lady_Aleena]: Has anyone here ever use pcregrep? I can't seem to get the --include regex right. --include=*.p[lm] works in grep but not pcregrep.
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[Discipulus]: focus on Perl LA; you can already search multiline patterns
[erix]: grep is a program, not a regex-engine

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