From 63cb856698604e76e30962a2adc7244613939c88 Mon Sep 17 00:00:00 2001
From: theduke <chris@theduke.at>
Date: Tue, 10 Jan 2017 11:59:19 +0100
Subject: [PATCH] Fix struct_expr grammar: make base update part optional.

The current grammar rule 'struct_expr' does not set the base update part
as optional.

Fixed by a single ?.
---
 src/doc/grammar.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/doc/grammar.md b/src/doc/grammar.md
index 690d44cc2cb7b..4bf14c5b51d5f 100644
--- a/src/doc/grammar.md
+++ b/src/doc/grammar.md
@@ -512,7 +512,7 @@ unit_expr : "()" ;
 ```antlr
 struct_expr : expr_path '{' ident ':' expr
                       [ ',' ident ':' expr ] *
-                      [ ".." expr ] '}' |
+                      [ ".." expr ] ? '}' |
               expr_path '(' expr
                       [ ',' expr ] * ')' |
               expr_path ;