in reply to Re: regular expression with @@/
in thread regular expression with @@/

Both \Q and \ will escape @

No, \Q doesn't: 

$ perl -wle'print q{@@x} =~ m|\A\Q@@x\E\z| ? "match" : "no match"'
Possible unintended interpolation of @x in string at -e line 1.
Name "main::x" used only once: possible typo at -e line 1.
no match

$ perl -wle'print q{@@x} =~ m|\A@\@x\z| ? "match" : "no match"'
match

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Re^3: regular expression with @@/
by ikegami (Patriarch) on Dec 07, 2009 at 19:38 UTC
    ah, interesting! 
    $ perl -le'@@=qw( a b ); print qr|\Q@@|'
(?-xism:\@\@)

$ perl -le'@@=qw( a b ); print qr|@@|'
(?-xism:@@)

$ perl -le'@a=qw( a b ); print qr|\Q@a|'
(?-xism:a\ b)

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    I knew something was hinky with what I had posted.

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