git-debrebase: breakwater_of: permit unclean to be an fproblem

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

1 files changed, 10 insertions, 3 deletions

diff --git a/git-debrebase b/git-debrebase
index 54431a7..f79aef5 100755
--- a/git-debrebase
+++ b/git-debrebase
@@ -494,12 +494,19 @@ sub classify ($) {
     return $unknown->("complex merge");
 }
 
-sub breakwater_of ($) {
-    my ($head) = @_; # must be laundered
+sub breakwater_of ($;$) {
+    my ($head, $unclean_fproblem_tag) = @_;
+    # $head should be laundered; if not, $unclean_fproblem_tag controls:
+    # if falseish, calls fail; otherwise, calls fproblem and returns undef
     my $breakwater;
     my $unclean = sub {
 	my ($why) = @_;
-	fail "branch needs laundering (run git-debrebase): $why";
+	my $m = "branch needs laundering (run git-debrebase): $why";
+	fail $m unless $unclean_fproblem_tag;
+	fproblem $unclean_fproblem_tag, $m;
+	$breakwater = undef;
+	no warnings qw(exiting);
+	last;
     };
     for (;;) {
 	my $cl = classify $head;