Merge #9262

9262: fix: Don't keep a trailing `self` token in import paths after `unmerge_use` r=Veykril a=Veykril

Fixes #9213
bors r+

Co-authored-by: Lukas Wirth <lukastw97@gmail.com>

crates/ide_assists/src/handlers/unmerge_use.rs

@@ -73,7 +73,11 @@ fn resolve_full_path(tree: &ast::UseTree) -> Option<ast::Path> {
     for path in paths {
         final_path = ast::make::path_concat(path, final_path)
     }
-    Some(final_path)
+    if final_path.segment().map_or(false, |it| it.self_token().is_some()) {
+        final_path.qualifier()
+    } else {
+        Some(final_path)
+    }
 }
 
 #[cfg(test)]
@@ -223,4 +227,14 @@ pub use std::fmt::Display;
 ",
         );
     }
+
+    #[test]
+    fn unmerge_use_item_on_self() {
+        check_assist(
+            unmerge_use,
+            r"use std::process::{Command, self$0};",
+            r"use std::process::{Command};
+use std::process;",
+        );
+    }
 }