fix version resolution

1 files changed, 5 insertions, 11 deletions

diff --git a/src/version.rs b/src/version.rs
index 5371669..6354143 100644
--- a/src/version.rs
+++ b/src/version.rs
@@ -147,16 +147,12 @@ pub struct Arguments {
 
 impl Arguments {
     fn apply_child(&mut self, other: &Arguments) {
-        if self.game.is_none() {
-            if let Some(game) = other.game.as_ref() {
-                self.game.replace(game.to_owned());
-            }
+        if let Some(game) = other.game.as_ref() {
+            self.game.get_or_insert_default().splice(0..0, game.iter().cloned());
         }
 
-        if self.jvm.is_none() {
-            if let Some(jvm) = other.jvm.as_ref() {
-                self.jvm.replace(jvm.to_owned());
-            }
+        if let Some(jvm) = other.jvm.as_ref() {
+            self.jvm.get_or_insert_default().splice(0..0, jvm.iter().cloned());
         }
     }
 }
@@ -323,9 +319,7 @@ impl CompleteVersion {
 
         if let Some(rules) = other.compatibility_rules.as_ref() {
             if let Some(my_rules) = self.compatibility_rules.as_mut() {
-                for rule in rules {
-                    my_rules.push(rule.to_owned());
-                }
+                my_rules.splice(0..0, rules.iter().cloned());
             } else {
                 self.compatibility_rules.replace(rules.to_owned());
             }