> If the right argument is an expression rather than a search pattern,

True, but this doesn't apply here, it's literal a search pattern (i.e. compile time), the m is just optional:

Both generate exactly the same opcodes:

<Reveal this spoiler or all in this thread>

"expressions evaluated at runtime" are things like variables or functions or do-blocks...

  DB<103> $x= '\w{3}'
 => "\\w{3}"

  DB<104> 'abc' =~ $x
 => 1

  DB<105> sub regex { '\w{3}' }

  DB<106> 'abc' =~ regex()
 => 1

[download]

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re^3: Misreading m// documentation (perlop =~ ) by LanX
in thread Misreading m// documentation by QM

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