--- a/tests/test-contrib-check-commit.t Wed Jan 18 20:03:00 2017 -0500
+++ b/tests/test-contrib-check-commit.t Wed Jan 18 23:34:35 2017 -0500
@@ -30,6 +30,30 @@
> EOF
$ cat patch-with-long-header.diff | $TESTDIR/../contrib/check-commit
+This would normally be against the rules, but it's okay because that's
+what tagging and signing looks like:
+
+ $ cat > creates-a-tag.diff << EOF
+ > # HG changeset patch
+ > # User Augie Fackler <raf@durin42.com>
+ > # Date 1484787778 18000
+ > # Wed Jan 18 20:02:58 2017 -0500
+ > # Branch stable
+ > # Node ID c177635e4acf52923bc3aa9f72a5b1ad1197b173
+ > # Parent a1dd2c0c479e0550040542e392e87bc91262517e
+ > Added tag 4.1-rc for changeset a1dd2c0c479e
+ >
+ > diff --git a/.hgtags b/.hgtags
+ > --- a/.hgtags
+ > +++ b/.hgtags
+ > @@ -150,3 +150,4 @@ 438173c415874f6ac653efc1099dec9c9150e90f
+ > eab27446995210c334c3d06f1a659e3b9b5da769 4.0
+ > b3b1ae98f6a0e14c1e1ba806a6c18e193b6dae5c 4.0.1
+ > e69874dc1f4e142746ff3df91e678a09c6fc208c 4.0.2
+ > +a1dd2c0c479e0550040542e392e87bc91262517e 4.1-rc
+ > EOF
+ $ $TESTDIR/../contrib/check-commit < creates-a-tag.diff
+
A patch with lots of errors:
$ cat > patch-with-long-header.diff << EOF