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Re: FW: Cygwin Perl bug -- pod2usage(-verbose => 0) & pod2usage(-verbose => 1)
- From: Reini Urban <rurban at x-ray dot at>
- To: pod-people at perl dot org
- Cc: David Christensen <dpchrist at holgerdanske dot com>, perlbug at perl dot org, cygwin <cygwin at cygwin dot com>
- Date: Tue, 18 Jan 2005 11:03:01 +0100
- Subject: Re: FW: Cygwin Perl bug -- pod2usage(-verbose => 0) & pod2usage(-verbose => 1)
- References: <200501180337.j0I3bcx4016479@a.mail.sonic.net>
David Christensen schrieb:
pod-people & perlbug:
I made the subject posting on the Cygwin mailing list. Gerrit P. Haase
confirmed the bug in pod2usage(), and requested that I forward the posting to
pod-people and perlbug. The referenced script attachments follow.
All three cases work fine for me on cygwin & perl 5.8.6 with default
configuration.
Having the scripts on textmounts and on binmounts.
Just if the scripts are on textmounts and the files with CRLF, test0 and
test1 will fail. PERLIO not set.
However:
PERLIO=crlf ./test1
and
PERLIO=crlf ./test0
works ok, with those textmount cases.
Debugging through Pod::Usage, reveils that reading from the tied
FileHandle will keep \r\n. Looks ok.
Pod::Parser::parse_from_filehandle ...
DB<1> x $in_fh
0 GLOB(0x8f2534)
-> *Symbol::GEN0
FileHandle({*Symbol::GEN0}) => fileno(6)
DB<2> c Pod::Select::is_selected
Pod::Select::is_selected(/usr/lib/perl5/5.8/Pod/Select.pm:508):
$_ = "=head1 SYNOPSIS\cM\cJ\cM\cJ";
if (/^=((?:sub)*)(?:head(?:ing)?|sec(?:tion)?)(\d*)\s+(.*)\s*$/) {
my ($level, $heading) = ($2, $3);
}
DB<2> x $heading
0 "SYNOPSIS\cM"
Which should be "SYNOPSIS".
So my recommended fix would be this patch:
$ diff -bu Select.pm~ Select.pm
--- Select.pm~ 2005-01-10 00:30:15.001000000 +0100
+++ Select.pm 2005-01-18 11:02:32.920797700 +0100
@@ -505,7 +505,7 @@
## Keep track of current sections levels and headings
$_ = $paragraph;
- if (/^=((?:sub)*)(?:head(?:ing)?|sec(?:tion)?)(\d*)\s+(.*)\s*$/) {
+ if (/^=((?:sub)*)(?:head(?:ing)?|sec(?:tion)?)(\d*)\s+(.*?)\s*$/) {
## This is a section heading command
my ($level, $heading) = ($2, $3);
$level = 1 + (length($1) / 3) if ((! length $level) ||
(length $1));
-----Original Message-----
From: David Christensen [mailto: dpchrist at holgerdanske dot com]
Sent: Sunday, January 16, 2005 7:03 PM
To: 'cygwin at cygwin dot com'
Subject: Cygwin Perl bug -- pod2usage(-verbose => 0) & pod2usage(-verbose => 1)
Cygwin:
Perl Pod::Usage pod2usage(-verbose => 0) is supposed to display the Pod SYNOPSIS
information (ref. 'perdoc Pod::Usage'). See attached script 'test0'. On Debian
3.0r2, it works:
<CVSENV>dpchrist@p166d302:~/cygwin-issues/Pod-Usage$ perl test0
Usage:
This is the synopsis...
On Cygwin, it exits without displaying anything.
pod2usage(-verbose => 1) is supposed to display the Pod SYNOPSIS, OPTIONS,
ARGUMENTS, and/or OPTIONS AND ARGUMENTS sections. See attached script 'test1'.
On Debian, it works:
<CVSENV>dpchrist@p166d302:~/cygwin-issues/Pod-Usage$ perl test1
Usage:
This is the synopsis...
Options:
Here are the options...
On Cygwin, it exits without displaying anything.
pod2usage(-verbose => 2) is supposed to display the entire Pod documentation.
See attached script 'test2'. It works on both Debian and Cygwin.
Checking the mailing list archive, I see one report but no resolution:
http://sources.redhat.com/ml/cygwin/2002-01/msg01392.html
Google didn't seem to have much on this either.
dpchrist@p42800e:~/mydocuments/cygwin-issues/Pod-Usage$ cat test0
#! /usr/bin/perl -w
use Pod::Usage;
pod2usage(-verbose => 0);
=pod
=head1 NAME
test - demonstrates Cygwin bug in pod2usage.
=head1 SYNOPSIS
This is the synopsis...
=head1 OPTIONS
Here are the options...
=head1 DESCRIPTION
Descriptive text...
=cut
dpchrist@p42800e:~/mydocuments/cygwin-issues/Pod-Usage$ cat test1
#! /usr/bin/perl -w
use Pod::Usage;
pod2usage(-verbose => 1);
=pod
=head1 NAME
test - demonstrates Cygwin bug in pod2usage.
=head1 SYNOPSIS
This is the synopsis...
=head1 OPTIONS
Here are the options...
=head1 DESCRIPTION
Descriptive text...
=cut
dpchrist@p42800e:~/mydocuments/cygwin-issues/Pod-Usage$ cat test2
#! /usr/bin/perl -w
use Pod::Usage;
pod2usage(-verbose => 2);
=pod
=head1 NAME
test - demonstrates Cygwin bug in pod2usage.
=head1 SYNOPSIS
This is the synopsis...
=head1 OPTIONS
Here are the options...
=head1 DESCRIPTION
Descriptive text...
=cut
--
Reini Urban
http://xarch.tu-graz.ac.at/home/rurban/
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