refactor(parser): Reduce code duplication

src/parser/parser.rs

@@ -1506,14 +1506,7 @@ impl<'cmd> Parser<'cmd> {
 
     /// Increase occurrence of specific argument and the grouped arg it's in.
     fn start_occurrence_of_arg(&self, matcher: &mut ArgMatcher, arg: &Arg) {
-        // With each new occurrence, remove overrides from prior occurrences
-        self.remove_overrides(arg, matcher);
-
-        matcher.start_custom_arg(arg, ValueSource::CommandLine);
-        // Increment or create the group "args"
-        for group in self.cmd.groups_for_arg(arg.get_id()) {
-            matcher.start_custom_group(group, ValueSource::CommandLine);
-        }
+        self.start_custom_arg(matcher, arg, ValueSource::CommandLine);
     }
 }