update-copyright: avoid copyright notice date corruption

[gnulib.git] / ChangeLog

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+2013-01-03  Jim Meyering  <jim@meyering.net>
+
+       update-copyright: avoid copyright notice date corruption
+       Given a sequence of copyright year numbers in which the final
+       one was a two-digit number that happened to be a substring of
+       a preceding four-digit year number, we would mistakenly update
+       the substring (from two- to four-digit) rather than the two-digit
+       number at the end, which, combined with the addition of the current
+       4-digit year number would yield two 5-digit year numbers, e.g.,
+       here, it would convert the first "99" to "1999, 2013" rather than
+       the final one:
+         1991, 99
+         11999, 20131, 1999
+       * build-aux/update-copyright: Tighten a regexp.
+       * tests/test-update-copyright.sh: Add a test case to trigger the bug.
+       Reported by Joseph Myers in
+       http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/32281
+
 2013-01-01  Paul Eggert  <eggert@cs.ucla.edu>
 
        regex: omit needless signed-pointer casts