langtool: When renaming the key of untranslated strings, also change the value.

Tools/langtool/src/main.rs

@@ -242,7 +242,12 @@ fn main() {
             ref section,
             ref old,
             ref new,
-        } => rename_key(&mut reference_ini, section, old, new).unwrap(),
+        } => {
+            if old == new {
+                println!("WARNING: old == new");
+            }
+            rename_key(&mut reference_ini, section, old, new).unwrap();
+        }
         Command::MoveKey {
             ref old,
             ref new,

Tools/langtool/src/section.rs

@@ -92,7 +92,12 @@ impl Section {
         }
         if let Some(index) = found_index {
             let line = self.lines.remove(index);
-            let line = new.to_owned() + " =" + line.strip_prefix(&prefix).unwrap();
+            let mut right_part = line.strip_prefix(&prefix).unwrap().to_string();
+            if right_part.trim() == old.trim() {
+                // Was still untranslated - replace the translation too.
+                right_part = format!(" {}", new);
+            }
+            let line = new.to_owned() + " =" + &right_part;
             self.insert_line_if_missing(&line);
         } else {
             let name = &self.name;