in reply to Strange behaviour of m and $_

Subroutine invocations don't interpolate in double quoted strings (of which m// is a special kind). Either store the results from your function in a scalar and let that interpolate, or use something like /@{[ test_reg1() ]}/ instead.

And an aside, don't use the leading ampersand on subroutine calls; it does things to how the sub is called and unless you specifically have a reason to (and know why you're doing it) you should just omit it.

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Re^2: Strange behaviour of m and $_
by ysth (Canon) on Oct 18, 2006 at 00:10 UTC
    And an aside, don't use the leading ampersand on subroutine calls; it does things to how the sub is called
    Slight clarification: that only applies when no () follow the sub name.
[reply]
      ...except 
      $\=$/;

sub print { CORE::print("[$_[0]]"); }

print('foo');   # foo
&print('bar');  # [bar]

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