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| author | Jarkko Hietaniemi <jhi@iki.fi> | 2003-04-16 17:24:24 +0000 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2003-04-16 17:24:24 +0000 |
| commit | 3b0db4f96671dacfd3421850abb588b84e2ce6da (patch) | |
| tree | b4dd5b58cf76bc310bf531651dc3bc49a19ee500 /pod/perlrun.pod | |
| parent | 57b48062fe99a8eadb0b080a32b9197986647f56 (diff) | |
| download | perl-3b0db4f96671dacfd3421850abb588b84e2ce6da.tar.gz | |
Handle PERLIO= and document a bit.
p4raw-id: //depot/perl@19241
Diffstat (limited to 'pod/perlrun.pod')
| -rw-r--r-- | pod/perlrun.pod | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/pod/perlrun.pod b/pod/perlrun.pod index e6c8f73fce..2b63c6b056 100644 --- a/pod/perlrun.pod +++ b/pod/perlrun.pod @@ -918,6 +918,8 @@ emphasise their similarity to variable "attributes". But the code that parses layer specification strings (which is also used to decode the PERLIO environment variable) treats the colon as a separator. +An unset or empty PERLIO is equivalent to C<:stdio>. + The list becomes the default for I<all> perl's IO. Consequently only built-in layers can appear in this list, as external layers (such as :encoding()) need IO in order to load them!. See L<"open pragma"|open> for how to add external |