dgit: -wg / -wgf clean check is a no-op

Document this, and handle it explicitly in the clean_tree_check
conditional and in the test suite.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

1 files changed, 4 insertions, 0 deletions

diff --git a/dgit b/dgit
index e88af4e..52ae472 100755
--- a/dgit
+++ b/dgit
@@ -6238,6 +6238,10 @@ sub clean_tree_check () {
     } elsif ($cleanmode =~ m{^dpkg-source}) {
 	clean_tree_check_git_wd __
  "tree contains uncommitted files (NB dgit didn't run rules clean)";
+    } elsif ($cleanmode =~ m{^git}) {
+	# If we were actually cleaning these files would be summarily
+	# deleted.  Since we're not, and not using the working tree
+	# anyway, we can just ignore them - nothing will use them.
     }
 }