Allow \' in strings

gtkblueprinttool/parse_tree.py

@@ -494,7 +494,8 @@ class UseQuoted(ParseNode):
         string = (str(token)[1:-1]
             .replace("\\n", "\n")
             .replace("\\\"", "\"")
-            .replace("\\\\", "\\"))
+            .replace("\\\\", "\\")
+            .replace("\\'", "\'"))
         ctx.set_group_val(self.key, string, token)
         return True
 

tests/samples/strings.blp

@@ -1,5 +1,5 @@
 using Gtk 4.0;
 
 Label {
-  label: "Test 1 2 3\n & 4 \"5\" 6";
+  label: "Test 1 2 3\n & 4 \"5\' 6";
 }

tests/samples/strings.ui

@@ -3,6 +3,6 @@
   <requires lib="gtk" version="4.0"/>
   <object class="GtkLabel">
     <property name="label">Test 1 2 3
- &amp; 4 "5" 6</property>
+ &amp; 4 "5' 6</property>
   </object>
 </interface>