1 files changed, 47 insertions, 0 deletions
diff --git a/lib/syntax_suggest/core_ext.rb b/lib/syntax_suggest/core_ext.rb
new file mode 100644
index 0000000000..ffbc922eed
--- /dev/null
+++ b/lib/syntax_suggest/core_ext.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+module SyntaxSuggest
+  # SyntaxSuggest.module_for_detailed_message [Private]
+  #
+  # Used to monkeypatch SyntaxError via Module.prepend
+  def self.module_for_detailed_message
+    Module.new {
+      def detailed_message(highlight: true, syntax_suggest: true, **kwargs)
+        return super unless syntax_suggest
+
+        require "syntax_suggest/api" unless defined?(SyntaxSuggest::DEFAULT_VALUE)
+
+        message = super
+
+        if path
+          file = Pathname.new(path)
+          io = SyntaxSuggest::MiniStringIO.new
+
+          SyntaxSuggest.call(
+            io: io,
+            source: file.read,
+            filename: file,
+            terminal: highlight
+          )
+          annotation = io.string
+
+          annotation += "\n" unless annotation.end_with?("\n")
+
+          annotation + message
+        else
+          message
+        end
+      rescue => e
+        if ENV["SYNTAX_SUGGEST_DEBUG"]
+          $stderr.warn(e.message)
+          $stderr.warn(e.backtrace)
+        end
+
+        # Ignore internal errors
+        message
+      end
+    }
+  end
+end
+
+SyntaxError.prepend(SyntaxSuggest.module_for_detailed_message)