Bug#1062437: python-debian: When Files: is a whitespace-separated list, files are matched too eagerly

[Lasse Collin]

One way to fix it is to change buf.write('|') to buf.write('\Z|') in
globs_to_re in copyright.py line 485[1]. The comment at the end of the
method sounds like that the thinking had been that in 'foo|bar\Z' the
\Z would affect matching of foo but in reality only affects bar.

Other possibility is modifying matches(). In copyright.py line 758,
pat.match(filename) could be changed to pat.fullmatch(filename). Then
globs_to_re wouldn't need to add \Z even at the end.

[1]
https://salsa.debian.org/python-debian-team/python-debian/-/blob/e7990d2ab83057a2aaf7851f4250f1072f6fee8c/lib/debian/copyright.py#L485

[2]
https://salsa.debian.org/python-debian-team/python-debian/-/blob/master/src/debian/copyright.py#L758

-- 
Lasse Collin