From f6eb95619981c2ef3b65e5d92691c8231f83a40c Mon Sep 17 00:00:00 2001
From: Matthew Flatt <mflatt@racket-lang.org>
Date: Sat, 17 Nov 2018 15:06:55 -0700
Subject: [PATCH] cs: fix `error` with a single symbol argument

Closes #2379
---
 racket/src/io/error/main.rkt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/racket/src/io/error/main.rkt b/racket/src/io/error/main.rkt
index 8ef4da9700..25357e0ad5 100644
--- a/racket/src/io/error/main.rkt
+++ b/racket/src/io/error/main.rkt
@@ -19,7 +19,7 @@
          (null? args))
     (raise
      (exn:fail
-      (format "error: ~a" init)
+      (string-append "error: " (symbol->string init))
       (current-continuation-marks)))]
    [(symbol? init)
     (unless (string? (car args))