From: Jarkko Hietaniemi Date: Thu, 17 Apr 2003 09:20:27 +0000 (+0000) Subject: Document that the open pragma does not affect X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=164794897687cae4b298b3efb3ed2d20c601262b;p=p5sagit%2Fp5-mst-13.2.git Document that the open pragma does not affect the three-headed hydra, ummm, open. p4raw-id: //depot/perl@19245 --- diff --git a/lib/open.pm b/lib/open.pm index c294093..39e194f 100644 --- a/lib/open.pm +++ b/lib/open.pm @@ -166,9 +166,12 @@ Perl is configured to use PerlIO as its IO system (which is now the default). The C pragma serves as one of the interfaces to declare default -"layers" (also known as "disciplines") for all I/O. Any open(), -readpipe() (aka qx//) and similar operators found within the lexical -scope of this pragma will use the declared defaults. +"layers" (also known as "disciplines") for all I/O. Any two-argument +open(), readpipe() (aka qx//) and similar operators found within the +lexical scope of this pragma will use the declared defaults. +Three-argument opens are not affected by this pragma since there you +(can) explicitly specify the layers and are supposed to know what you +are doing. With the C subpragma you can declare the default layers of input streams, and with the C subpragma you can declare