From 66658f1168321e1ba3e6aae3f0c038308f0771d7 Mon Sep 17 00:00:00 2001
From: adamrk <ark.email@gmail.com>
Date: Wed, 2 Sep 2020 22:49:21 +0200
Subject: Trim mut keyword in fn completion

---
 crates/ide/src/completion/presentation.rs | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/crates/ide/src/completion/presentation.rs b/crates/ide/src/completion/presentation.rs
index c7d460465..987cbfa7a 100644
--- a/crates/ide/src/completion/presentation.rs
+++ b/crates/ide/src/completion/presentation.rs
@@ -225,7 +225,7 @@ impl Completions {
             .flat_map(|(it, param_ty)| {
                 if let Some(pat) = it.pat() {
                     let name = pat.to_string();
-                    let arg = name.trim_start_matches('_');
+                    let arg = name.trim_start_matches("mut ").trim_start_matches('_');
                     return Some(add_arg(arg, param_ty.ty(), ctx));
                 }
                 None
@@ -961,6 +961,27 @@ fn main() {
         );
     }
 
+    #[test]
+    fn trim_mut_keyword_in_func_completion() {
+        check_edit(
+            "take_mutably",
+            r#"
+fn take_mutably(mut x: &i32) {}
+
+fn main() {
+    take_m<|>
+}
+"#,
+            r#"
+fn take_mutably(mut x: &i32) {}
+
+fn main() {
+    take_mutably(${1:x})$0
+}
+"#,
+        );
+    }
+
     #[test]
     fn inserts_parens_for_tuple_enums() {
         mark::check!(inserts_parens_for_tuple_enums);
-- 
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