From be443ac05451202fc92ca4fd8ad991c6057e0516 Mon Sep 17 00:00:00 2001
From: Sukera <11753998+Seelengrab@users.noreply.github.com>
Date: Thu, 15 Jul 2021 12:14:27 +0200
Subject: [PATCH] REPL doc lookup assumed ASCII for the given string, fixes
 #41589 (#41594)

---
 stdlib/REPL/src/docview.jl  | 2 +-
 stdlib/REPL/test/docview.jl | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/stdlib/REPL/src/docview.jl b/stdlib/REPL/src/docview.jl
index b6eb73bcd5faa..2e5fc361d8cbc 100644
--- a/stdlib/REPL/src/docview.jl
+++ b/stdlib/REPL/src/docview.jl
@@ -221,7 +221,7 @@ function lookup_doc(ex)
         str = string(ex)
         isdotted = startswith(str, ".")
         if endswith(str, "=") && Base.operator_precedence(ex) == Base.prec_assignment && ex !== :(:=)
-            op = str[1:end-1]
+            op = chop(str)
             eq = isdotted ? ".=" : "="
             return Markdown.parse("`x $op= y` is a synonym for `x $eq x $op y`")
         elseif isdotted && ex !== :(..)
diff --git a/stdlib/REPL/test/docview.jl b/stdlib/REPL/test/docview.jl
index 1cc5037c1c806..160544eb475d2 100644
--- a/stdlib/REPL/test/docview.jl
+++ b/stdlib/REPL/test/docview.jl
@@ -47,3 +47,7 @@ end
     # shouldn't throw when there is a space in a middle of query
     @test (REPL.matchinds("a ", "a file.txt"); true)
 end
+
+@testset "Unicode doc lookup (#41589)" begin
+    @test REPL.lookup_doc(:(÷=)) isa Markdown.MD
+end