dgit: Honour new .clean-mode-newer access config option

This will allow us to extend the set of clean modes without causing
irresolvable compatibility problems for users.

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

2 files changed, 11 insertions, 2 deletions

diff --git a/dgit b/dgit
index de14c1e..8c7f288 100755
--- a/dgit
+++ b/dgit
@@ -7355,7 +7355,10 @@ sub parseopts_late_defaults () {
 
     if (!defined $cleanmode) {
 	local $access_forpush;
-	$cleanmode = access_cfg('clean-mode', 'RETURN-UNDEF');
+	$cleanmode = access_cfg('clean-mode-newer', 'RETURN-UNDEF');
+	$cleanmode = undef if $cleanmode && $cleanmode !~ m/^$cleanmode_re$/;
+
+	$cleanmode //= access_cfg('clean-mode', 'RETURN-UNDEF');
 	$cleanmode //= 'dpkg-source';
 
 	badcfg f_ "unknown clean-mode \`%s'", $cleanmode unless
diff --git a/dgit.1 b/dgit.1
index d34231f..ccf1ea5 100644
--- a/dgit.1
+++ b/dgit.1
@@ -1219,7 +1219,13 @@ the default value used if there is no distro-specific setting.
 One of the values for the command line --clean= option; used if
 --clean is not specified.
 .TP
-.BR dgit-distro. \fIdistro\fR .quilt-mode
+.BR dgit-distro. \fIdistro\fR .clean-mode-newer
+Like .clean-mode,
+but ignored if the value does not make sense to this version of dgit.
+Setting both .clean-mode and .clean-mode-newer is useful
+to provide a single git config compatible with different dgit versions.
+.TP
+.BR dgit-distro. \fIdistro\fR .quilt-
 One of the values for the command line --quilt= option; used if
 --quilt is not specified.
 .TP