From 4717c66dbf1f189bd752259a9e7b2dfe87ef9617 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20S=2E=20=C5=81ukasiewicz?= <marek@lukasiewicz.tech>
Date: Mon, 28 Apr 2025 17:39:30 +0200
Subject: [PATCH] Update grammar to not require a plus sign in exponent

This allows to parse numbers like 0.31416E1 and 34e1 (both examples from Lua Reference Manual)
---
 src/lua.grammar | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lua.grammar b/src/lua.grammar
index d3ca805..0063d6c 100644
--- a/src/lua.grammar
+++ b/src/lua.grammar
@@ -146,8 +146,8 @@ TableConstructor { "{" (field (fieldsep field) fieldsep?)? "}" }
   digit { std.digit }
 
   Number {
-    digit+ ("." digit+)? ($[eE] $[+\-] digit+)? |
-    "0" $[xX] hex+ ("." hex+)? ($[pP] $[+/-] digit+)?
+    digit+ ("." digit+)? ($[eE] $[+\-]? digit+)? |
+    "0" $[xX] hex+ ("." hex+)? ($[pP] $[+\-]? digit+)?
   }
 
   Comment { "--" ![\n\r]* }