From f7ed797d859437677aa1a1fd1e3cb6f21ff78f5f Mon Sep 17 00:00:00 2001
From: Greg Brown <gmb60@cam.ac.uk>
Date: Wed, 3 Feb 2021 14:29:23 +0000
Subject: Fix bug where all literals get an `Into<char>` implementation.

---
 src/lower/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lower/mod.rs b/src/lower/mod.rs
index 6ad1d0a..dcd0f1f 100644
--- a/src/lower/mod.rs
+++ b/src/lower/mod.rs
@@ -197,7 +197,7 @@ impl Backend for RustBackend {
             }
         };
 
-        if let Some(c) = lit.value().chars().next() {
+        if let [c] = lit.value().chars().collect::<Vec<_>>()[..] {
             self.can_char.insert(id);
             rest.extend(quote_spanned! {span=>
                                         impl From<#name> for char {
-- 
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