Heuristic rule for Hack .hh files (#4347)

github-linguist · Dec 10, 2018 · 1cc86b6 · 1cc86b6
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diff --git a/lib/linguist/heuristics.yml b/lib/linguist/heuristics.yml
@@ -149,6 +149,10 @@ disambiguations:
     named_pattern: objectivec
   - language: C++
     named_pattern: cpp
+- extensions: ['.hh']
+  rules:
+  - language: Hack
+    pattern: '<\?hh'
 - extensions: ['.ice']
   rules:
   - language: Slice

diff --git a/test/test_heuristics.rb b/test/test_heuristics.rb
@@ -181,6 +181,13 @@ def test_h_by_heuristics
     })
   end
 
+  # Candidate languages = ["C++", "Hack"]
+  def test_hh_by_heuristics
+    assert_heuristics({
+      "Hack" => all_fixtures("Hack", "*.hh"),
+    })
+  end
+
   def test_ice_by_heuristics
     assert_heuristics({
       "Slice" => all_fixtures("Slice", "*.ice"),