From 1136bbf0668d84d2b4b09b772e33fd8532994f83 Mon Sep 17 00:00:00 2001
From: clubby789 <jamie@hill-daniel.co.uk>
Date: Wed, 13 Nov 2024 13:17:01 +0000
Subject: [PATCH] Trim extra space when suggesting removing bad `let`

---
 compiler/rustc_parse/src/parser/pat.rs | 4 +++-
 tests/ui/parser/unnecessary-let.stderr | 8 ++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/compiler/rustc_parse/src/parser/pat.rs b/compiler/rustc_parse/src/parser/pat.rs
index 7f1140133202d..3546e5b0f0495 100644
--- a/compiler/rustc_parse/src/parser/pat.rs
+++ b/compiler/rustc_parse/src/parser/pat.rs
@@ -683,7 +683,9 @@ impl<'a> Parser<'a> {
             })
         {
             self.bump();
-            self.dcx().emit_err(RemoveLet { span: lo });
+            // Trim extra space after the `let`
+            let span = lo.with_hi(self.token.span.lo());
+            self.dcx().emit_err(RemoveLet { span });
             lo = self.token.span;
         }
 
diff --git a/tests/ui/parser/unnecessary-let.stderr b/tests/ui/parser/unnecessary-let.stderr
index c6ac0d562f82c..05ac1faafd4d9 100644
--- a/tests/ui/parser/unnecessary-let.stderr
+++ b/tests/ui/parser/unnecessary-let.stderr
@@ -2,12 +2,12 @@ error: expected pattern, found `let`
   --> $DIR/unnecessary-let.rs:2:9
    |
 LL |     for let x of [1, 2, 3] {}
-   |         ^^^
+   |         ^^^^
    |
 help: remove the unnecessary `let` keyword
    |
 LL -     for let x of [1, 2, 3] {}
-LL +     for  x of [1, 2, 3] {}
+LL +     for x of [1, 2, 3] {}
    |
 
 error: missing `in` in `for` loop
@@ -25,12 +25,12 @@ error: expected pattern, found `let`
   --> $DIR/unnecessary-let.rs:7:9
    |
 LL |         let 1 => {}
-   |         ^^^
+   |         ^^^^
    |
 help: remove the unnecessary `let` keyword
    |
 LL -         let 1 => {}
-LL +          1 => {}
+LL +         1 => {}
    |
 
 error: aborting due to 3 previous errors