Add test to show failure described in twaugh#12

Author: twaugh

Makefile.am

@@ -221,13 +221,15 @@ TESTS = tests/newline1/run-test \
 	tests/fullheader1/run-test \
 	tests/fullheader2/run-test \
 	tests/fullheader3/run-test \
+	tests/fullheader4/run-test \
 	tests/whitespace/run-test
 
 # These ones don't work yet.
 # Feel free to send me patches. :-)
 XFAIL_TESTS = \
 	tests/delhunk5/run-test \
-	tests/delhunk6/run-test
+	tests/delhunk6/run-test \
+	tests/fullheader4/run-test
 
 distclean-local:
 	-rm -rf $(top_builddir)/test-arena

tests/fullheader4/run-test

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# This is a filterdiff(1) testcase.
+# Handle git format-patch output when stripping pathname components
+# From: https://github.com/twaugh/patchutils/issues/12
+
+. ${top_srcdir-.}/tests/common.sh
+
+cat <<"EOF" > git-output
+diff --git a/test.txt b/test.txt
+index 257cc56..5716ca5 100644
+--- a/test.txt
++++ b/test.txt
+@@ -1 +1 @@
+-foo
++bar
+EOF
+
+${FILTERDIFF} --strip=1 git-output 2>errors >output || { cat errors; exit 1; }
+[ -s errors ] && { cat errors; exit 1; }
+cmp output <<"EOF" || exit 1
+diff --git a/test.txt b/test.txt
+index 257cc56..5716ca5 100644
+--- test.txt
++++ test.txt
+@@ -1 +1 @@
+-foo
++bar
+EOF
+exit 0