From 611f11cc4c99ee77b24606ddb43afffe4af681c7 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 16 Jul 2016 17:59:07 +0100
Subject: quilt innards: Change calling convention for
 quilt_check_splitbrain_cache

---
 dgit | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/dgit b/dgit
index 835366e..1e6be23 100755
--- a/dgit
+++ b/dgit
@@ -2994,15 +2994,10 @@ END
 
 sub quilt_check_splitbrain_cache ($$) {
     my ($headref, $upstreamversion) = @_;
-    # Checks to see if we are in (potentially) split brain mode.
-    # If so, computes the cache key and looks in the cache.
-    # If split brain is not applicable, returns (undef,0).
-    # Otherwise returns ($cachekey,HIT) where
-    # HIT=0: miss; HIT=1: hit, needs different commit; HIT=2: same commit OK
-
-    quilt_make_fake_dsc($upstreamversion);
-
-    return (undef,0) unless quiltmode_splitbrain();
+    # Called only if we are in (potentially) split brain mode.
+    # Called in $ud.
+    # Computes the cache key and looks in the cache.
+    # Returns ($dgit_view_commitid, $cachekey) or (undef, $cachekey)
 
     my $splitbrain_cachekey;
     
@@ -3052,16 +3047,16 @@ sub quilt_check_splitbrain_cache ($$) {
 	    progress "dgit view: found cached (commit id $cachehit)";
 	    runcmd @git, qw(checkout -q -b dgit-view), $cachehit;
 	    $split_brain = 1;
-	    return ($splitbrain_cachekey, 1);
+	    return ($cachehit, $splitbrain_cachekey);
 	}
 	progress "dgit view: found cached, no changes required";
-	return ($splitbrain_cachekey, 2);
+	return ($headref, $splitbrain_cachekey);
     }
     die $! if GC->error;
     failedcmd unless close GC;
 
     printdebug "splitbrain cache miss\n";
-    return ($splitbrain_cachekey, 0);
+    return (undef, $splitbrain_cachekey);
 }
 
 sub quilt_fixup_multipatch ($$$) {
@@ -3138,10 +3133,16 @@ sub quilt_fixup_multipatch ($$$) {
     # afterwards with dpkg-source --before-build.  That lets us save a
     # tree object corresponding to .origs.
 
-    my ($splitbrain_cachekey,$cachehit) =
-	quilt_check_splitbrain_cache($headref, $upstreamversion);
+    my $splitbrain_cachekey;
+
+    quilt_make_fake_dsc($upstreamversion);
 
-    return if $splitbrain_cachekey && $cachehit;
+    if (quiltmode_splitbrain()) {
+	my $cachehit;
+	($cachehit, $splitbrain_cachekey) =
+	    quilt_check_splitbrain_cache($headref, $upstreamversion);
+	return if $cachehit;
+    }
 
     runcmd qw(sh -ec),
         'exec dpkg-source --no-check --skip-patches -x fake.dsc >/dev/null';
-- 
cgit v1.2.3