Change qr/foo$/m to qr/foo\n/m, for Perl 5.8.8.

In each case, absence of a trailing newline would itself constitute a
PostgreSQL bug.  Therefore, this slightly enhances the changed tests.
This works around a bug that last appeared in Perl 5.8.8, fixing
src/test/modules/test_pg_dump when run against that version.  Commit
e7293e3271bf618eeb2d4779a15fc516a69fe463 worked around the bug, but the
subsequent addition of test_pg_dump introduced affected code.  As that
commit had shown, slight increases in pattern complexity can suppress
the bug.  This commit edits qr/foo$/m patterns too complex to encounter
the bug today, for style consistency and robustness against unrelated
pattern changes.  Back-patch to 9.6, where test_pg_dump was introduced.

As of this writing, a fresh MSYS installation includes an affected Perl
5.8.8.  The Perl 5.8.8 in Red Hat Enterprise Linux 5.11 carries a patch
that renders it unaffected, but the Perl 5.8.5 of Red Hat Enterprise
Linux 4.4 is affected.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/tools/msvc/Project.pm b/src/tools/msvc/Project.pm
index a4eb653c260..faf1a683f66 100644
--- a/src/tools/msvc/Project.pm
+++ b/src/tools/msvc/Project.pm
@@ -256,7 +256,7 @@ sub AddDir
 	# Match rules that pull in source files from different directories, eg
 	# pgstrcasecmp.c rint.c snprintf.c: % : $(top_srcdir)/src/port/%
 	my $replace_re =
-	  qr{^([^:\n\$]+\.c)\s*:\s*(?:%\s*: )?\$(\([^\)]+\))\/(.*)\/[^\/]+$}m;
+	  qr{^([^:\n\$]+\.c)\s*:\s*(?:%\s*: )?\$(\([^\)]+\))\/(.*)\/[^\/]+\n}m;
 	while ($mf =~ m{$replace_re}m)
 	{
 		my $match  = $1;