From ed61a84553a7e51d2b2e2adf2ec5f8471bd40dcf Mon Sep 17 00:00:00 2001
From: Roberto Alsina <roberto.alsina@gmail.com>
Date: Thu, 20 Feb 2025 13:24:53 -0300
Subject: [PATCH] fix: when the internal crystal highlighter fails, fallback to
 ruby. Fixes #13

---
 src/lexer.cr | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/lexer.cr b/src/lexer.cr
index e47cdeb..0fd92ae 100644
--- a/src/lexer.cr
+++ b/src/lexer.cr
@@ -350,6 +350,14 @@ module Tartrazine
   class CustomCrystalHighlighter < Crystal::SyntaxHighlighter
     @tokens = [] of Token
 
+    def highlight(text)
+      super
+    rescue ex : Crystal::SyntaxException
+      # Fallback to Ruby highlighting
+      Log.warn { "Highlighting as Ruby, Crystal syntax highlighting failed: #{ex.message}" }
+      @tokens = Tartrazine.lexer("ruby").tokenizer(text).to_a
+    end
+
     def render_delimiter(&block)
       @tokens << {type: "LiteralString", value: block.call.to_s}
     end