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New feature proposal : <<>> to disable magic open of ARGV

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Rafael Garcia-Suarez
July 24, 2014 15:51
New feature proposal : <<>> to disable magic open of ARGV
Message ID:
I believe that this was discussed here some years ago, and that this
was suggested by TomC. Anyway, I pushed a patch on rgs/nomagicopen.
The patch is incomplete as it lacks docs and tests. I welcome feedback
on the intent of the feature.

commit 7f5bb3418c4fc2d6e2523bf918a7d9e33f9a7acc
Author: Rafael Garcia-Suarez <>
Date:   Thu Jul 24 17:43:29 2014 +0200

    Introduce the double-diamond operator <<>>

    This operator works like <> or <ARGV>, as it reads the list of file
    names to open from the command-line arguments. However, it disables
    the magic-open feature (that forks to execute piped commands) :

        $ bleadperl -e 'while(<>){print}' 'echo foo |'
        $ bleadperl -e 'while(<<>>){print}' 'echo foo |'
        Can't open echo foo |: No such file or directory at -e line 1.

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