Support condition in older tree-sitter-rust

Author: pokey

src/languages/rust.ts

@@ -14,6 +14,7 @@ import {
   trailingMatcher,
 } from "../util/nodeMatchers";
 import {
+  childRangeSelector,
   makeNodePairSelection,
   makeRangeFromPositions,
 } from "../util/nodeSelectors";
@@ -148,6 +149,12 @@ const nodeMatchers: Partial<
   ifStatement: ["if_expression", "if_let_expression"],
   condition: cascadingMatcher(
     patternMatcher("while_expression[condition]", "if_expression[condition]"),
+    matcher(
+      patternFinder("while_let_expression", "if_let_expression"),
+      childRangeSelector(["while", "if", "block"], [], {
+        includeUnnamedChildren: true,
+      }),
+    ),
     leadingMatcher(["*.match_pattern![condition]"], ["if"]),
   ),
   functionCall: ["call_expression", "macro_invocation", "struct_expression"],