I beg to differ ...uh agree with the OP 

>perl -wle"while ('a'=~/(.)/, 0) {} print(qq{Found $1})"
Use of uninitialized value in concatenation (.) or string at -e line 1
+.
Found

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Turns out $x .= <> doesn't even cause a warning at EOF?! 

>perl -we"our $x; $x .= <>" <nul

>

[download]

In reply to Re^2: Capture not working by ikegami
in thread Capture not working by Rabenschwinge

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