Re: Regex returns match the first time. It returns everything thereafter

if ($line =~ /line/../\\Z/) { ... }

The /line/ regex is bound to (i.e., matches against) the $line scalar. The /\\Z/ regex is not explicitly bound to any scalar, and so matches against the $_ default scalar, which is not initialized to anything in the code shown in the OP. So no, the /\\Z/ regex never matches and the .. flip-flop operator never flops back to its false state. Doesn't this match against an undefined value produce a warning? Are you using warnings?

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Re^2: Regex returns match the first time. It returns everything thereafter by guitarplayer68 (Novice) on Nov 18, 2013 at 13:28 UTC
Yes I am using warnings and there are no undefined value messages.	[reply]
Re^3: Regex returns match the first time. It returns everything thereafter by AnomalousMonk (Archbishop) on Nov 18, 2013 at 15:13 UTC
This could be explained if `$_` had been assigned a defined value by some operation previous to the code shown in the OP. The other twist I noticed is that the regex is really `/\Z/` and not `/\\Z/`. The former regex matches everything, even undef (although a warning is still generated for a match against `undef` if warnings are enabled).	[reply] [d/l] [select]