From 6c87a4656cee232518d9029c4ebb168c46353f9b Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Sun, 22 Dec 2019 10:06:34 -0800
Subject: [PATCH] project: decrease score if .c is matched against .hh (#549)

---
 src/project.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/project.cc b/src/project.cc
index e22e523c..120a958f 100644
--- a/src/project.cc
+++ b/src/project.cc
@@ -551,11 +551,16 @@ Project::Entry Project::findEntry(const std::string &path, bool can_redirect,
     if (!best) {
       // Infer args from a similar path.
       int best_score = INT_MIN;
+      auto [lang, header] = lookupExtension(path);
       for (auto &[root, folder] : root2folder)
         if (StringRef(path).startswith(root))
           for (const Entry &e : folder.entries)
             if (e.compdb_size) {
               int score = computeGuessScore(path, e.filename);
+              // Decrease score if .c is matched against .hh
+              auto [lang1, header1] = lookupExtension(e.filename);
+              if (lang != lang1 && !(lang == LanguageId::C && header))
+                score -= 30;
               if (score > best_score) {
                 best_score = score;
                 best_compdb_folder = &folder;