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bug or a feature?
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From:
Torsten Foertsch
Date:
November 7, 2003 11:35
Subject:
bug or a feature?
Message ID:
200311072032.52925.torsten.foertsch@gmx.net
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Is it a bug or a feature?
# perl -e 'open F, "/" and defined(scalar <F>) and print "ok\n"; print "$!\n"'
Is a directory
but
# perl -e 'undef $/;open F, "/" and defined(scalar <F>) and print "ok\n";
print "$!\n"'
ok
Is a directory
verified with 5.8.0 and 5.8.2 on Linux.
Under Linux read(2) returns EISDIR if the file descriptor refers to a
directory, i.e. it is an error.
perlop states:
In scalar context, evaluating a filehandle in angle brack
ets yields the next line from that file (the newline, if
any, included), or "undef" at end-of-file or on error.
When $/ is set to "undef" (sometimes known as file-slurp
mode) and the file is empty, it returns '' the first time,
followed by "undef" subsequently.
I think C<< scalar <F> >> should return C<undef> even if not defined $/,
shouldn't it?
Torsten
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bug or a feature?
by Torsten Foertsch