From 8b70d7be3222bf802c3ee688efd321da5c4fa3c5 Mon Sep 17 00:00:00 2001
From: Simeon David Schaub <simeon@schaub.rocks>
Date: Tue, 30 Jul 2024 20:56:28 +0200
Subject: [PATCH] `strip_gensym`: handle unicode correctly

fixes JuliaDebug/Cthulhu.jl#583
---
 src/utils.jl     | 4 ++--
 test/runtests.jl | 5 +++++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/utils.jl b/src/utils.jl
index 65e6210..6927e54 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -201,10 +201,10 @@ function strip_gensym(str::AbstractString)
     if startswith(str, '#')
         idx = findnext('#', str, 2)
         if idx !== nothing
-            return Symbol(str[2:idx-1])
+            return Symbol(str[2:prevind(str, idx)])
         end
     end
-    endswith(str, "##kw") && return Symbol(str[1:end-4])
+    endswith(str, "##kw") && return Symbol(str[1:prevind(str, end-3)])
     return Symbol(str)
 end
 
diff --git a/test/runtests.jl b/test/runtests.jl
index 72d6913..d4ae8b8 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -432,3 +432,8 @@ end
     body, _ = CodeTracking.definition(String, which(diffminmax, (Any,)))
     @test body == "diffminmax((min, max)) = max - min"
 end
+
+@testset "strip_gensym with unicode" begin
+    @test CodeTracking.strip_gensym("#𝓔′#90") == :𝓔′
+    @test CodeTracking.strip_gensym("𝓔′##kw") == :𝓔′
+end