From d42fd8efb6019c08371007df68ef3a38c2e86a45 Mon Sep 17 00:00:00 2001
From: Jess Balint <jbalint@gmail.com>
Date: Fri, 22 May 2020 10:15:59 -0500
Subject: [PATCH] use char range

---
 .../ra_assists/src/handlers/change_lifetime_anon_to_named.rs  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/ra_assists/src/handlers/change_lifetime_anon_to_named.rs b/crates/ra_assists/src/handlers/change_lifetime_anon_to_named.rs
index 7101d9aaff3..67d50cfda5c 100644
--- a/crates/ra_assists/src/handlers/change_lifetime_anon_to_named.rs
+++ b/crates/ra_assists/src/handlers/change_lifetime_anon_to_named.rs
@@ -54,8 +54,8 @@ pub(crate) fn change_lifetime_anon_to_named(acc: &mut Assists, ctx: &AssistConte
                             param_name
                         })
                         .collect();
-                    "abcdefghijklmnopqrstuvwxyz"
-                        .chars()
+                    (b'a'..=b'z')
+                        .map(char::from)
                         .find(|c| !used_lifetime_params.contains(&c.to_string()))?
                 }
                 None => 'a',