testsuite: add regression test for #111

Makefile.am

@@ -65,6 +65,7 @@ EXTRA_DIST =	pkg.m4 \
 		tests/lib1/flag-order-1.pc \
 		tests/lib1/flag-order-3.pc \
 		tests/lib1/variable-whitespace.pc \
+		tests/lib1/fragment-quoting.pc \
 		tests/test_env.sh \
 		$(test_scripts) \
 		doc/conf.py \

tests/lib1/fragment-quoting.pc

@@ -0,0 +1,10 @@
+prefix=/test
+exec_prefix=${prefix}
+libdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: fragment-quoting
+Description: A testing pkg-config file
+Version: 1.2.3
+Cflags: -fPIC -I${includedir}/foo -DQUOTED='"${prefix}/share/doc"'
+Cflags.private: -DFOO_STATIC

tests/parser.sh

@@ -18,7 +18,8 @@ tests_init \
 	flag_order_3 \
 	flag_order_4 \
 	quoted \
-	variable_whitespace
+	variable_whitespace \
+	fragment_quoting
 
 comments_body()
 {
@@ -152,3 +153,11 @@ variable_whitespace_body()
 		-o inline:"-I/test/include  \n" \
 		pkgconf --cflags variable-whitespace
 }
+
+fragment_quoting_body()
+{
+	export PKG_CONFIG_PATH="${selfdir}/lib1"
+	atf_check \
+		-o inline:"-fPIC -I/test/include/foo -DQUOTED='\"/test/share/doc\"'  \n" \
+		pkgconf --cflags fragment-quoting
+}