From f1533732b093e54665471fcf92aba5c77f0acedd Mon Sep 17 00:00:00 2001
From: Neal Gafter <neal.gafter@microsoft.com>
Date: Wed, 15 Jul 2020 09:23:26 -0700
Subject: [PATCH] Missing ':' in format part of interpolation (#3679)

---
 spec/lexical-structure.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spec/lexical-structure.md b/spec/lexical-structure.md
index 2152bee..a7bde85 100644
--- a/spec/lexical-structure.md
+++ b/spec/lexical-structure.md
@@ -698,7 +698,7 @@ single_regular_balanced_text_character
     ;
     
 interpolation_format
-    : interpolation_format_character+
+    : ':' interpolation_format_character+
     ;
     
 interpolation_format_character