#!perl -pl
s/@{[s".."."gr]}\K$"//

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I understand the regex like this: 

s/....\K //  (with the good number of '.')

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...but in facts it works like this: 

s/....\K/ /

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I don't understand why. The usage of $" seems magic too...

English is not my mother tongue.
Les tongues de ma mère sont "made in France".

In reply to Re^3: strange usage of s/// by brx
in thread strange usage of s/// [solved: Perl 5.14 and 5.16 bug] by brx

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