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The Basics
Id: 12425
Status: resolved
Priority: 0/
Queue: version
People
Owner: jpeacock [...] cpan.org
Requestors: grousse [...] cpan.org
Cc:
AdminCc:
Bug Information
Severity: Unimportant
Broken in: 0.42
Fixed in: (no value)

History Show all quoted text
  Wed Apr 27 07:41:56 2005 grousse [...] cpan.org - Ticket created
Subject: useless shellbang in module
verion pm starts with an useless shellbang, whereas it is not censed to be executable, as other pragmas.
  Wed Apr 27 09:41:31 2005 jpeacock [...] cpan.org - Status changed from 'new' to 'open'
  Wed Apr 27 09:52:32 2005 jpeacock [...] cpan.org - Correspondence added
It's not useless. The version.pm file is not shipped with the execute bit set, so the shebang line never comes into play (by the shell anyway). The presence of the '-w' on the line, however, means that warnings are turned on globally (as opposed to lexically with 'use warnings'), which is very much appropriate for an experimental pragma like version.pm. I will consider removing the '-w' later in the development (i.e. once Perl 5.10.0 is ready to come out, since version.pm is in the core with the 5.9.x series leading up to 5.10.0). But for the moment, the extra diagnostics of '-w' are quite reasonable. Thanks for the comment! John
  Wed Apr 27 09:52:35 2005 jpeacock [...] cpan.org - Status changed from 'open' to 'resolved'
  Thu Apr 28 05:02:44 2005 grousse [...] cpan.org - Correspondence added
[JPEACOCK - Wed Apr 27 09:52:32 2005]: Show quoted text
> It's not useless. The version.pm file is not shipped with the execute > bit set, so the shebang line never comes into play (by the shell > anyway). The presence of the '-w' on the line, however, means that > warnings are turned on globally (as opposed to lexically with 'use > warnings'), which is very much appropriate for an experimental pragma > like version.pm.
OK, I wasn't aware perl subverted the shellbang for its own use :)
  Thu Apr 28 05:02:45 2005 The RT System itself - Status changed from 'resolved' to 'open'
  Tue Jun 07 21:47:01 2005 jpeacock [...] cpan.org - Taken
  Tue Jun 07 21:47:23 2005 jpeacock [...] cpan.org - Status changed from 'open' to 'resolved'
  Thu Mar 02 12:55:06 2006 scop [...] cpan.org - Correspondence added
On Wed Apr 27 09:52:32 2005, JPEACOCK wrote: Show quoted text
> It's not useless. The version.pm file is not shipped with the execute > bit set, so the shebang line never comes into play (by the shell > anyway). The presence of the '-w' on the line, however, means that > warnings are turned on globally (as opposed to lexically with 'use > warnings'), which is very much appropriate for an experimental pragma > like version.pm.
I'm having problems reproducing the effect of -w. To test it, I'm commenting out "use strict", then adding a 'print $foo, "\n";' somewhere in the file. With warnings on, that should result in an "Use of uninitialized value" warning, right? However: $ perl -Mversion -e '' (no output) $ perl -w -Mversion -e '' Use of uninitialized value in print at /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi/version.pm line 18. IOW, the shebang with the -w doesn't seem to have any effect here. This is Perl 5.8.8 on Fedora Core 5 test 3, version.pm 0.57.
  Thu Mar 02 12:55:09 2006 The RT System itself - Status changed from 'resolved' to 'open'
  Fri Jul 07 10:31:20 2006 jpeacock [...] cpan.org - Status changed from 'open' to 'resolved'