Bug#757545: lintian: warn if the License paragraph in debian/copyright for known licenses not in /usr/share/common-licenses is too short

[Johannes Schauer <j.schauer@email.de>]

Package: lintian
Version: 2.5.25
Severity: wishlist

Hi,

some licenses are rather long and thus it could be easily detected
whether their "License" paragraph in debian/copyright is too short to
possibly contain them.

Here some examples of licenses which are probably long enough such that
this heuristic would have a low amount of false positives but are not
shipped in /usr/share/common-licenses:

 - AGPL3
 - LaTeX Project Public License
 - Python Software Foundation License
 - Mozilla Public License
 - Creative Commons licenses

the user would then get a message like: "your License stanza for AGPL3+
is only 20 lines long and thus probably not the full text of the AGPL"

Thanks!

cheers, josch

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.14-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lintian depends on:
ii  binutils                       2.24.51.20140617-1
ii  bzip2                          1.0.6-5
ii  diffstat                       1.58-1
ii  file                           1:5.19-1
ii  gettext                        0.18.3.2-3
ii  hardening-includes             2.5
ii  intltool-debian                0.35.0+20060710.1
ii  libapt-pkg-perl                0.1.29+b1
ii  libarchive-zip-perl            1.37-2
ii  libclass-accessor-perl         0.34-1
ii  libclone-perl                  0.37-1
ii  libdpkg-perl                   1.17.10
ii  libemail-valid-perl            1.194-1
ii  libfile-basedir-perl           0.03-1
ii  libipc-run-perl                0.92-1
ii  liblist-moreutils-perl         0.33-2
ii  libparse-debianchangelog-perl  1.2.0-1
ii  libtext-levenshtein-perl       0.09-1
ii  libtimedate-perl               2.3000-2
ii  liburi-perl                    1.62-1
ii  man-db                         2.6.7.1-1
ii  patchutils                     0.3.3-1
ii  perl [libdigest-sha-perl]      5.18.2-6
ii  t1utils                        1.37-2

Versions of packages lintian recommends:
ii  libautodie-perl                 2.25-1
ii  libperlio-gzip-perl             0.18-3
ii  perl-modules [libautodie-perl]  5.18.2-6

Versions of packages lintian suggests:
pn  binutils-multiarch     <none>
ii  dpkg-dev               1.17.10
ii  libhtml-parser-perl    3.71-1+b1
ii  libtext-template-perl  1.46-1
ii  libyaml-perl           0.95-1
ii  xz-utils               5.1.1alpha+20120614-2

-- no debconf information