From 5ff434da6a1ebda73f0a91e4bd0ebebc01c50ed9 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Tue, 2 Jul 2019 17:21:05 -0700
Subject: [PATCH] Fix join() and append() $separator error messages

Closes #738
---
 CHANGELOG.md                | 3 +++
 lib/src/functions/list.dart | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31732c3d0..e022a81ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,9 @@
   passed a string that contains characters that aren't represented as a single
   byte in UTF-16.
 
+* Improve the error message for an unknown separator name passed to the `join()`
+  or `append()` functions.
+
 ## 1.22.2
 
 ### JavaScript API
diff --git a/lib/src/functions/list.dart b/lib/src/functions/list.dart
index abe4871e7..c683f972b 100644
--- a/lib/src/functions/list.dart
+++ b/lib/src/functions/list.dart
@@ -63,7 +63,7 @@ final _join = BuiltInCallable(
     separator = ListSeparator.comma;
   } else {
     throw SassScriptException(
-        '\$$separator: Must be "space", "comma", or "auto".');
+        '\$separator: Must be "space", "comma", or "auto".');
   }
 
   var bracketed = bracketedParam is SassString && bracketedParam.text == 'auto'
@@ -91,7 +91,7 @@ final _append =
     separator = ListSeparator.comma;
   } else {
     throw SassScriptException(
-        '\$$separator: Must be "space", "comma", or "auto".');
+        '\$separator: Must be "space", "comma", or "auto".');
   }
 
   var newList = [...list.asList, value];