From ae5d2bfd475eaab3f8939afe2ba7ec0d91430d71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=81=AA=E3=81=A4=E3=81=8D?= <i@ntk.me>
Date: Mon, 7 Nov 2022 20:36:37 -0800
Subject: [PATCH] Support sass-embedded (#196)

---
 lib/hamlit/filters/tilt_base.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/hamlit/filters/tilt_base.rb b/lib/hamlit/filters/tilt_base.rb
index cb7e1d49..b10fd00e 100644
--- a/lib/hamlit/filters/tilt_base.rb
+++ b/lib/hamlit/filters/tilt_base.rb
@@ -7,7 +7,11 @@ class TiltBase < Base
       def self.render(name, source, indent_width: 0)
         text = ::Tilt["t.#{name}"].new { source }.render
         return text if indent_width == 0
-        text.gsub!(/^/, ' ' * indent_width)
+        if text.frozen?
+          text.gsub(/^/, ' ' * indent_width)
+        else
+          text.gsub!(/^/, ' ' * indent_width)
+        end
       end
 
       def explicit_require?(needed_registration)