fix: Fallback to language portion of locale if locale region not found

Author: mmstick

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "freedesktop-desktop-entry"
-version = "0.3.2"
+version = "0.3.3"
 authors = ["Michael Aaron Murphy <[email protected]>"]
 edition = "2018"
 homepage = "https://codeberg.org/mmstick/freedesktop-desktop-entry"

src/lib.rs

@@ -180,7 +180,16 @@ impl<'a> DesktopEntry<'a> {
     ) -> Option<&'a str> {
         group.and_then(|group| group.get(key)).and_then(|key| {
             locale
-                .and_then(|locale| key.1.get(locale).cloned())
+                .and_then(|locale| match key.1.get(locale) {
+                    Some(value) => Some(*value),
+                    None => {
+                        if let Some(pos) = locale.find('_') {
+                            key.1.get(&locale[..pos]).cloned()
+                        } else {
+                            None
+                        }
+                    }
+                })
                 .or(Some(key.0))
         })
     }