tests: Add a test for an escaped space

Makefile.am

@@ -95,6 +95,7 @@ EXTRA_DIST =	pkg.m4 \
 		tests/lib1/metapackage-2.pc \
 		tests/lib1/explicit-sysroot.pc \
 		tests/lib1/escaped-backslash.pc \
+		tests/lib1/escaped-space.pc \
 		tests/lib1/cflags-internal.pc \
 		tests/lib1/requires-internal.pc \
 		tests/lib1/requires-internal-2.pc \

tests/lib1/escaped-space.pc

@@ -0,0 +1,4 @@
+Name: escaped-space
+Version: 1
+Description: test package for backslash escape of spaces
+Cflags: -IC:\\A\ space

tests/parser.sh

@@ -138,6 +138,14 @@ escaped_backslash_body()
 		pkgconf --with-path=${selfdir}/lib1 --cflags escaped-backslash
 }
 
+escaped_space_body()
+{
+	atf_check \
+		-e ignore \
+		-o inline:"-IC:\\\\\\\\A space\n" \
+		pkgconf --with-path=${selfdir}/lib1 --cflags escaped-space
+}
+
 quoted_body()
 {
 	export PKG_CONFIG_PATH="${selfdir}/lib1"