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Bug#801482: marked as done (The name of a programme, from which an error message comes, is missing in the lintian's message)

Your message dated Thu, 21 Jan 2016 17:31:48 +0000
with message-id <56A11604.9050305@thykier.net>
and subject line Re: Bug#801482: The name of a programme, from which an error message comes, is missing in the lintian's message
has caused the Debian Bug report #801482,
regarding The name of a programme, from which an error message comes, is missing in the lintian's message
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
801482: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801482
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: lintian
Version: 2.5.30+deb8u4
Severity: important

Dear Maintainer,

   * What led up to the situation?

  Seeking an error that came when executing "lintian"

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

  The folowing simple script shows the error:

#!/bin/bash

set -u

echo TMPDIR is $TMPDIR

/usr/bin/man $*

# end of script.

  Put the script, named "man",  in a directory that is searched before "/usr/bin".

  Command line (any "deb"-file can be used (that contains a man-page?)):

lintian -C manpages /var/cache/apt/archives/lintian_2.5.30+deb8u4_all.deb

   * What was the outcome of this action?

W: lintian: manpage-has-errors-from-man usr/share/man/man1/lintian-info.1.gz  line 5: TMPDIR: unbound variable
W: lintian: manpage-has-errors-from-man usr/share/man/man1/lintian.1.gz  line 5: TMPDIR: unbound variable

   * What outcome did you expect instead?

  The name of the programme where the error occurred.

  This is important to reduce the time figuring out from where it came.

  The value of the environmental variable TMPDIR is '/tmp'

###

  There are two errors in "lintian", reported separately.

  Here, the missing name of the file with "line 5" (which is the above script).

##

  How will (the cause of) this programming error be documented, so people
(can) learn from it and do not repeat it themselves?

##

There is a saying,

	Any fool can learn from his own experience,
	The wise man learns from the experience of others.

Too many students show that the first line is not correct.
But the second is very important, and is the basis of
the setting up of an educational program.

Herman Rubin in the Usenet group "misc.education".

##

  "The problems of the real world are primarily those you are
left with when you refuse to apply their effective solutions."

P. xxxviii in:

On the Cruelty of Really Teaching Computing Science

Edsger W. Dykstra (Dijkstra)

SIGCSE Bulletin 1989, 21(1), bls. xxv-xxxix.
Also "www.cs.utexas.edu/users/EWD/"

-- System Information:
Debian Release: 8.2
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'stable-updates'), (500, 'proposed-updates')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.7-ckt11-u3 (SMP w/2 CPU cores)
Locale: LANG=is_IS.iso88591, LC_CTYPE=is_IS.iso88591 (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages lintian depends on:
ii  binutils                       2.25-5
ii  bzip2                          1.0.6-7+b3
ii  diffstat                       1.58-1
ii  file                           1:5.22+15-2
ii  gettext                        0.19.3-2
ii  hardening-includes             2.6
ii  intltool-debian                0.35.0+20060710.1
ii  libapt-pkg-perl                0.1.29+b2
ii  libarchive-zip-perl            1.39-1
ii  libclass-accessor-perl         0.34-1
ii  libclone-perl                  0.37-1+b1
ii  libdpkg-perl                   1.17.25
ii  libemail-valid-perl            1.195-1
ii  libfile-basedir-perl           0.03-1
ii  libipc-run-perl                0.92-1
ii  liblist-moreutils-perl         0.33-2+b1
ii  libparse-debianchangelog-perl  1.2.0-1.1
ii  libtext-levenshtein-perl       0.11-1
ii  libtimedate-perl               2.3000-2
ii  liburi-perl                    1.64-1
ii  man-db                         2.7.0.2-5
ii  patchutils                     0.3.3-1
ii  perl [libdigest-sha-perl]      5.20.2-3+deb8u1
ii  t1utils                        1.38-4

Versions of packages lintian recommends:
pn  libperlio-gzip-perl             <none>
ii  perl                            5.20.2-3+deb8u1
ii  perl-modules [libautodie-perl]  5.20.2-3+deb8u1

Versions of packages lintian suggests:
pn  binutils-multiarch     <none>
ii  dpkg-dev               1.17.25
ii  libhtml-parser-perl    3.71-1+b3
ii  libtext-template-perl  1.46-1
pn  libyaml-perl           <none>
ii  xz-utils               5.1.1alpha+20120614-2+b3

-- no debconf information

-- 
Bjarni I. Gislason

--- End Message ---
--- Begin Message --- 
Control: tags -1 wontifx


On Wed, 14 Oct 2015 13:22:39 +0200 Jakub Wilk <jwilk@debian.org> wrote:
> [...]
> * Bjarni Ingi Gislason <bjarniig@rhi.hi.is>, 2015-10-11, 00:41:
> >W: lintian: manpage-has-errors-from-man usr/share/man/man1/lintian-info.1.gz  line 5: TMPDIR: unbound variable
> >W: lintian: manpage-has-errors-from-man usr/share/man/man1/lintian.1.gz  line 5: TMPDIR: unbound variable
> >
> >   * What outcome did you expect instead?
> >
> >  The name of the programme where the error occurred.
> 
> Well, the tag name says "errors-from-man" and the error occurred in man, 
> so everything is clear.
> 

In the general case, I consider the name of the program we use to look
for errors an implementation detail.  Also, when we cross reference
output of 2+ tools, then we would have to include all of them?  I think
that is an anti-feature in the making.

On the other hand, I would /not/ object to it being part of lintian
output with --debug (* N) provided it has a negligible impact on
performance (for non --debug runs).  Though I will not be in a hurry to
sprinkle lintian checks full of "debug_msg" calls.

> >  This is important to reduce the time figuring out from where it came.
> 
> Can you think of a more realistic scenario where the user would be 
> genuinely confused about origin of the captured error?
> 
> Anyway, the attached patch seems to address you concerns. When it's 
> applied, you get:
> 
> W: lintian: manpage-has-errors-from-man usr/share/man/man1/lintian-info.1.gz /path/to/man: line 5: TMPDIR: unbound variable
> W: lintian: manpage-has-errors-from-man usr/share/man/man1/lintian.1.gz /path/to/man: line 5: TMPDIR: unbound variable
> 
> Hopefully the patch doesn't break anything else.
> 

Overrides, plus it means that future overrides now will depend PATH.
Also an anti-feature in the making.

Anyway, open to patches to include it in debug output.  Not in tag output.

Thanks,
~Niels

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