From 7e1ea50bc3a495bc8feb69ceb9856a0a28ecc2e9 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Wed, 13 Dec 2023 17:34:41 +0800
Subject: [PATCH] fixes #23060; `editDistance` wrongly compare the length of
 rune strings (#23062)

fixes #23060
---
 lib/std/editdistance.nim | 2 +-
 tests/errmsgs/t23060.nim | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 tests/errmsgs/t23060.nim

diff --git a/lib/std/editdistance.nim b/lib/std/editdistance.nim
index 6a25ca4b94..40c0017ae0 100644
--- a/lib/std/editdistance.nim
+++ b/lib/std/editdistance.nim
@@ -18,7 +18,7 @@ proc editDistance*(a, b: string): int {.noSideEffect.} =
   ## This uses the `Levenshtein`:idx: distance algorithm with only a linear
   ## memory overhead.
   runnableExamples: static: doAssert editdistance("Kitten", "Bitten") == 1
-  if len(a) > len(b):
+  if runeLen(a) > runeLen(b):
     # make `b` the longer string
     return editDistance(b, a)
   # strip common prefix
diff --git a/tests/errmsgs/t23060.nim b/tests/errmsgs/t23060.nim
new file mode 100644
index 0000000000..abb79bcc32
--- /dev/null
+++ b/tests/errmsgs/t23060.nim
@@ -0,0 +1,5 @@
+discard """
+  errormsg: "undeclared identifier: '♔♕♖♗♘♙'"
+"""
+
+♔♕♖♗♘♙ = 1
\ No newline at end of file