From b8fe5fe21b27a6118191f7b76ecda440e1992c02 Mon Sep 17 00:00:00 2001
From: Amaan Qureshi <amaanq12@gmail.com>
Date: Mon, 31 Jul 2023 13:51:30 +0100
Subject: [PATCH] fix: do not allow eof to advance states if the new state is
 the same state

---
 cli/src/generate/render.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/cli/src/generate/render.rs b/cli/src/generate/render.rs
index cb9f6c72..f7e6c18e 100644
--- a/cli/src/generate/render.rs
+++ b/cli/src/generate/render.rs
@@ -879,14 +879,23 @@ impl Generator {
                     add!(self, " ||{}", line_break);
                 }
                 if range.end == range.start {
+                    if range.start == '\0' {
+                        add!(self, "!eof && ");
+                    }
                     add!(self, "lookahead == ");
                     self.add_character(range.start);
                 } else if range.end as u32 == range.start as u32 + 1 {
+                    if range.start == '\0' {
+                        add!(self, "!eof && ");
+                    }
                     add!(self, "lookahead == ");
                     self.add_character(range.start);
                     add!(self, " ||{}lookahead == ", line_break);
                     self.add_character(range.end);
                 } else {
+                    if range.start == '\0' {
+                        add!(self, "!eof && ");
+                    }
                     add!(self, "(");
                     self.add_character(range.start);
                     add!(self, " <= lookahead && lookahead <= ");