Switch to absolute offsets for extend comment word

crates/ra_editor/src/extend_selection.rs

@@ -53,7 +53,7 @@ fn extend_single_word_in_comment(leaf: SyntaxNodeRef, offset: TextUnit) -> Optio
     let from: TextUnit = (start_idx + 1).into();
     let to: TextUnit = (cursor_position + end_idx).into();
 
-    Some(TextRange::from_to(from, to))
+    Some(TextRange::from_to(from, to) + leaf.range().start())
 }
 
 fn extend_ws(root: SyntaxNodeRef, ws: SyntaxNodeRef, offset: TextUnit) -> TextRange {
@@ -219,5 +219,14 @@ fn main() { foo+<|>bar;}
             r#"// foo bar b<|>az quxx"#,
             &["baz", "// foo bar baz quxx"]
         );
+        do_check(r#"
+impl S {
+    fn foo() {
+        // hel<|>lo world
+    }
+}
+        "#,
+            &["hello", "// hello world"]
+        );
     }
 }