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maint: prepare to use date ranges in copyright notices.

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* README (Copyright statements): New section explaining the range
notation.  The GNU coding standards require this explanation.  I
copied ours from coreutils.
* build-aux/update-b4-copyright: Revert 2010-06-17 changes that
disabled Bison's automated use of ranges.
* cfg.mk (update-copyright-env): Likewise.
This commit is contained in:
Joel E. Denny
2011-01-02 08:17:44 -05:00
parent 1eb6350451
commit cb3f7f335a
4 changed files with 28 additions and 5 deletions
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17
build-aux/update-b4-copyright
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@@ -73,10 +73,19 @@ while (/($old_re)/gx)
# Put spaces after commas.
$year_lines =~ s/, ?/, /g;
# Do not compress to intervals; for example, do not replace
# "2008, 2009, 2010" with "2008-2010". See the Copyright
# Notices section in Information for Maintainers of GNU Software, at:
# http://www.gnu.org/prep/maintain/maintain.html#Copyright-Notices
# Compress to intervals.
$year_lines =~
s/
(\d{4})
(?:
(,\ |-)
((??{
if ($2 eq '-') { '\d{4}'; }
elsif (!$3) { $1 + 1; }
else { $3 + 1; }
}))
)+
/$1-$3/gx;
# Format within margin.
my $year_lines_new;