There's a blank line at the end of the changelog, and, and quilt patch inside a quilt patch:
diff -Nru claws-mail-3.7.8/debian/patches/50disable_can_change_accels_by_default claws-mail-3.7.8/debian/patches/50disable_can_change_accels_by_default --- claws-mail-3.7.8/debian/patches/50disable_can_change_accels_by_default 1970-01-01 07:00:00.000000000 +0700 +++ claws-mail-3.7.8/debian/patches/50disable_can_change_accels_by_default 2010-12-14 20:14:43.000000000 +0700 @@ -0,0 +1,21 @@ +diff -Nru claws-mail-3.7.8/debian/patches/50gtk_can_change_accels.patch claws-mail-3.7.8/debian/patches/50gtk_can_change_accels.patch +--- claws-mail-3.7.8/debian/patches/50gtk_can_change_accels.patch 1970-01-01 07:00:00.000000000 +0700 ++++ claws-mail-3.7.8/debian/patches/50gtk_can_change_accels.patch 2010-12-14 16:52:26.000000000 +0700 +@@ -0,0 +1,17 @@ ... ++--- claws-mail-3.7.8/src/prefs_common.c 2010-11-26 01:58:31.000000000 +0700 +++++ claws-mail-3.7.8-1ubuntu1/src/prefs_common.c 2010-12-14 16:49:14.156221869 +0700 ++@@ -924,7 +924,7 @@ static PrefParam param[] = {
There's a blank line at the end of the changelog, and, and quilt patch inside a quilt patch:
diff -Nru claws-mail- 3.7.8/debian/ patches/ 50disable_ can_change_ accels_ by_default claws-mail- 3.7.8/debian/ patches/ 50disable_ can_change_ accels_ by_default 3.7.8/debian/ patches/ 50disable_ can_change_ accels_ by_default 1970-01-01 07:00:00.000000000 +0700 3.7.8/debian/ patches/ 50disable_ can_change_ accels_ by_default 2010-12-14 20:14:43.000000000 +0700 3.7.8/debian/ patches/ 50gtk_can_ change_ accels. patch claws-mail- 3.7.8/debian/ patches/ 50gtk_can_ change_ accels. patch 3.7.8/debian/ patches/ 50gtk_can_ change_ accels. patch 1970-01-01 07:00:00.000000000 +0700 3.7.8/debian/ patches/ 50gtk_can_ change_ accels. patch 2010-12-14 16:52:26.000000000 +0700 3.7.8/src/ prefs_common. c 2010-11-26 01:58:31.000000000 +0700 3.7.8-1ubuntu1/ src/prefs_ common. c 2010-12-14 16:49:14.156221869 +0700
--- claws-mail-
+++ claws-mail-
@@ -0,0 +1,21 @@
+diff -Nru claws-mail-
+--- claws-mail-
++++ claws-mail-
+@@ -0,0 +1,17 @@
...
++--- claws-mail-
+++++ claws-mail-
++@@ -924,7 +924,7 @@ static PrefParam param[] = {