From f6db3c37dc336b3897350a7cc4355e9fd16ebcb7 Mon Sep 17 00:00:00 2001
From: Brett Terpstra <me@brettterpstra.com>
Date: Tue, 19 Oct 2021 16:40:26 -0500
Subject: [PATCH] Fix for empty hashbangs

---
 lib/mdless/converter.rb | 2 +-
 test/codeblocks.md      | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/mdless/converter.rb b/lib/mdless/converter.rb
index d1e91d3..e54e454 100644
--- a/lib/mdless/converter.rb
+++ b/lib/mdless/converter.rb
@@ -634,7 +634,7 @@ def convert_markdown(input)
         else
           first_line = m[3].to_s.split(/\n/)[0]
 
-          if first_line =~ /^\s*#!/
+          if first_line =~ /^\s*#!.*\/.+/
             shebang = first_line.match(/^\s*#!.*\/(?:env )?([^\/]+)$/)
             language = shebang[1]
             code_block = m[3]
diff --git a/test/codeblocks.md b/test/codeblocks.md
index aa65bea..b466a24 100644
--- a/test/codeblocks.md
+++ b/test/codeblocks.md
@@ -4,6 +4,10 @@ date: yesterday
 Code block tests
 ================
 
+```
+#!
+```
+
 Just some text before we get started.
 
 ![Image test](https://raw.githubusercontent.com/eddieantonio/i/master/imgcat.png)<br/>after a break