Detect Elixir syntax by shebang (#2001)

rouge-ruby · Oct 25, 2023 · c71fa2f · c71fa2f
1 parent 55d2b48
commit c71fa2f
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diff --git a/lib/rouge/lexers/elixir.rb b/lib/rouge/lexers/elixir.rb
@@ -14,6 +14,10 @@ class Elixir < RegexLexer
 
       filenames '*.ex', '*.exs'
 
+      def self.detect?(text)
+        return true if text.shebang?('elixir')
+      end
+
       mimetypes 'text/x-elixir', 'application/x-elixir'
 
       state :root do

diff --git a/spec/lexers/elixir_spec.rb b/spec/lexers/elixir_spec.rb
@@ -16,5 +16,9 @@
       assert_guess :mimetype => 'text/x-elixir'
       assert_guess :mimetype => 'application/x-elixir'
     end
+
+    it 'guesses by source' do
+      assert_guess :source => '#!/usr/bin/env elixir'
+    end
   end
 end