From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 10 May 2024 13:39:13 +0000 (+0100)
Subject: fix and commentary
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=refs%2Fheads%2Frust-ticket-124974;p=rust-experiments.git

fix and commentary
---

diff --git a/macros/macros.rs b/macros/macros.rs
index b532ce7..0f66a6b 100644
--- a/macros/macros.rs
+++ b/macros/macros.rs
@@ -7,6 +7,9 @@ pub fn dbg_dump(input: TokenStream) -> TokenStream {
     input
 }
 
+/// Reconstructs, identically, all the `Group`s in a `TokenStream`
+///
+/// (We don't bother adjusting spans.)
 #[proc_macro]
 pub fn reconstruct_groups(input: TokenStream) -> TokenStream {
     fn recurse(input: TokenStream) -> TokenStream {
@@ -16,7 +19,7 @@ pub fn reconstruct_groups(input: TokenStream) -> TokenStream {
                 TokenTree::Group(g) => {
                     let delim = g.delimiter();
                     dbg!(&delim);
-                    let stream = reconstruct_groups(g.stream());
+                    let stream = recurse(g.stream());
                     TokenTree::Group(Group::new(delim, stream))
                 },
                 other => other,