Disable logging of filtered project paths, but let user enable it in config.

src/config.h

@@ -7,11 +7,15 @@
 struct Config {
   // Root directory of the project. **Not serialized**
   std::string projectRoot;
-
   std::string cacheDirectory;
+
+  std::vector<std::string> extraClangArguments;
+
   std::vector<std::string> indexWhitelist;
   std::vector<std::string> indexBlacklist;
-  std::vector<std::string> extraClangArguments;
+  // If true, project paths that were skipped by the whitelist/blacklist will
+  // be logged.
+  bool logSkippedPathsForIndex = false;
  
   // Maximum workspace search results.
   int maxWorkspaceSearchResults = 1000;
@@ -54,9 +58,12 @@ struct Config {
 };
 MAKE_REFLECT_STRUCT(Config,
   cacheDirectory,
-  indexWhitelist, indexBlacklist,
+
   extraClangArguments,
 
+  indexWhitelist, indexBlacklist,
+  logSkippedPathsForIndex,
+
   maxWorkspaceSearchResults,
   indexerCount,
   enableIndexing, enableCacheWrite, enableCacheRead,

src/project.cc

@@ -395,11 +395,13 @@ void Project::ForAllFilteredFiles(Config* config, std::function<void(int i, cons
     if (matcher.IsMatch(entry.filename, &failure_reason))
       action(i, entries[i]);
     else {
+      if (config->logSkippedPathsForIndex) {
         std::stringstream output;
         output << '[' << (i + 1) << '/' << entries.size() << "] Failed " << failure_reason << "; skipping " << entry.filename << std::endl;
         std::cerr << output.str();
       }
     }
+  }
 }
 
 TEST_SUITE("Project");