From d9bcaecf25fdd72c3f7a6b59d731b6988f98ecda Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Tue, 3 Apr 2018 23:05:41 -0700
Subject: [PATCH] Use global config.

---
 src/cache_manager.cc                          | 20 ++--
 src/clang_complete.cc                         | 22 ++---
 src/clang_complete.h                          |  5 +-
 src/clang_indexer.cc                          | 34 +++----
 src/clang_utils.cc                            |  2 +-
 src/command_line.cc                           | 29 +++---
 src/config.cc                                 |  2 +-
 src/config.h                                  | 14 +--
 src/diagnostics_engine.cc                     |  8 +-
 src/diagnostics_engine.h                      |  2 +-
 src/fuzzy_match.cc                            |  2 +-
 src/iindexer.cc                               |  6 +-
 src/iindexer.h                                |  2 -
 src/import_pipeline.cc                        | 50 +++++-----
 src/import_pipeline.h                         |  8 +-
 src/include_complete.cc                       | 43 +++++----
 src/include_complete.h                        |  3 +-
 src/indexer.h                                 |  2 -
 src/lex_utils.cc                              |  1 -
 src/lsp.cc                                    |  1 -
 src/message_handler.cc                        |  6 +-
 src/message_handler.h                         |  3 +-
 src/messages/ccls_base.cc                     | 10 +-
 src/messages/ccls_callers.cc                  |  4 +-
 src/messages/ccls_derived.cc                  | 10 +-
 src/messages/ccls_freshen_index.cc            |  3 +-
 src/messages/ccls_random.cc                   | 10 +-
 src/messages/ccls_vars.cc                     |  5 +-
 src/messages/initialize.cc                    | 31 +++----
 src/messages/text_document_code_lens.cc       |  2 +-
 src/messages/text_document_completion.cc      | 14 +--
 src/messages/text_document_definition.cc      |  6 +-
 src/messages/text_document_did_change.cc      |  2 +-
 src/messages/text_document_did_save.cc        |  2 +-
 src/messages/text_document_references.cc      |  6 +-
 src/messages/text_document_type_definition.cc |  2 +-
 .../workspace_did_change_configuration.cc     |  5 +-
 src/messages/workspace_symbol.cc              | 12 +--
 src/project.cc                                | 92 ++++++++-----------
 src/project.h                                 |  8 +-
 src/query_utils.cc                            | 11 +--
 src/query_utils.h                             |  4 +-
 src/test.cc                                   |  6 +-
 43 files changed, 211 insertions(+), 299 deletions(-)

diff --git a/src/cache_manager.cc b/src/cache_manager.cc
index 0fc06613..19e7bb59 100644
--- a/src/cache_manager.cc
+++ b/src/cache_manager.cc
@@ -21,7 +21,7 @@ struct RealCacheManager : ICacheManager {
     std::string cache_path = GetCachePath(file.path);
     WriteToFile(cache_path, file.file_contents);
 
-    std::string indexed_content = Serialize(g_config.cacheFormat, file);
+    std::string indexed_content = Serialize(g_config->cacheFormat, file);
     WriteToFile(AppendSerializationFormat(cache_path), indexed_content);
   }
 
@@ -38,34 +38,32 @@ struct RealCacheManager : ICacheManager {
     if (!file_content || !serialized_indexed_content)
       return nullptr;
 
-    return Deserialize(g_config.cacheFormat, path, *serialized_indexed_content,
+    return Deserialize(g_config->cacheFormat, path, *serialized_indexed_content,
                        *file_content, IndexFile::kMajorVersion);
   }
 
   std::string GetCachePath(const std::string& source_file) {
-    assert(!g_config.cacheDirectory.empty());
+    assert(!g_config->cacheDirectory.empty());
     std::string cache_file;
-    size_t len = g_config.projectRoot.size();
-    if (StartsWith(source_file, g_config.projectRoot)) {
-      cache_file = EscapeFileName(g_config.projectRoot) +
+    size_t len = g_config->projectRoot.size();
+    if (StartsWith(source_file, g_config->projectRoot)) {
+      cache_file = EscapeFileName(g_config->projectRoot) +
                    EscapeFileName(source_file.substr(len));
     } else {
-      cache_file = '@' + EscapeFileName(g_config.projectRoot) +
+      cache_file = '@' + EscapeFileName(g_config->projectRoot) +
                    EscapeFileName(source_file);
     }
 
-    return g_config.cacheDirectory + cache_file;
+    return g_config->cacheDirectory + cache_file;
   }
 
   std::string AppendSerializationFormat(const std::string& base) {
-    switch (g_config.cacheFormat) {
+    switch (g_config->cacheFormat) {
       case SerializeFormat::Json:
         return base + ".json";
       case SerializeFormat::MessagePack:
         return base + ".mpack";
     }
-    assert(false);
-    return ".json";
   }
 };
 
diff --git a/src/clang_complete.cc b/src/clang_complete.cc
index d76dbf81..465df042 100644
--- a/src/clang_complete.cc
+++ b/src/clang_complete.cc
@@ -383,7 +383,7 @@ void TryEnsureDocumentParsed(ClangCompleteManager* manager,
                                      unsaved, Flags());
 
   // Build diagnostics.
-  if (manager->config_->diagnostics.onParse && *tu) {
+  if (g_config->diagnostics.onParse && *tu) {
     // If we're emitting diagnostics, do an immediate reparse, otherwise we will
     // emit stale/bad diagnostics.
     *tu = ClangTranslationUnit::Reparse(std::move(*tu), unsaved);
@@ -450,7 +450,7 @@ void CompletionQueryMain(ClangCompleteManager* completion_manager) {
         completion_manager->completion_request_.Dequeue();
 
     // Drop older requests if we're not buffering.
-    while (completion_manager->config_->completion.dropOldRequests &&
+    while (g_config->completion.dropOldRequests &&
            !completion_manager->completion_request_.IsEmpty()) {
       completion_manager->on_dropped_(request->id);
       request = completion_manager->completion_request_.Dequeue();
@@ -528,7 +528,7 @@ void CompletionQueryMain(ClangCompleteManager* completion_manager) {
                 clang_getCompletionBriefComment(result.CompletionString));
 
             // label/detail/filterText/insertText/priority
-            if (completion_manager->config_->completion.detailedLabel) {
+            if (g_config->completion.detailedLabel) {
               ls_completion_item.detail = ToString(
                   clang_getCompletionParent(result.CompletionString, nullptr));
 
@@ -538,10 +538,10 @@ void CompletionQueryMain(ClangCompleteManager* completion_manager) {
               // label/filterText/insertText
               BuildCompletionItemTexts(
                   ls_result, result.CompletionString,
-                  completion_manager->config_->client.snippetSupport);
+                  g_config->client.snippetSupport);
 
               for (auto i = first_idx; i < ls_result.size(); ++i) {
-                if (completion_manager->config_->client.snippetSupport &&
+                if (g_config->client.snippetSupport &&
                     ls_result[i].insertTextFormat ==
                         lsInsertTextFormat::Snippet) {
                   ls_result[i].insertText += "$0";
@@ -558,8 +558,8 @@ void CompletionQueryMain(ClangCompleteManager* completion_manager) {
                   ls_completion_item.detail, ls_completion_item.insertText,
                   do_insert, ls_completion_item.insertTextFormat,
                   &ls_completion_item.parameters_,
-                  completion_manager->config_->client.snippetSupport);
-              if (completion_manager->config_->client.snippetSupport &&
+                  g_config->client.snippetSupport);
+              if (g_config->client.snippetSupport &&
                   ls_completion_item.insertTextFormat ==
                       lsInsertTextFormat::Snippet) {
                 ls_completion_item.insertText += "$0";
@@ -658,14 +658,12 @@ ClangCompleteManager::CompletionRequest::CompletionRequest(
       on_complete(on_complete),
       emit_diagnostics(emit_diagnostics) {}
 
-ClangCompleteManager::ClangCompleteManager(Config* config,
-                                           Project* project,
+ClangCompleteManager::ClangCompleteManager(Project* project,
                                            WorkingFiles* working_files,
                                            OnDiagnostic on_diagnostic,
                                            OnIndex on_index,
                                            OnDropped on_dropped)
-    : config_(config),
-      project_(project),
+    : project_(project),
       working_files_(working_files),
       on_diagnostic_(on_diagnostic),
       on_index_(on_index),
@@ -683,8 +681,6 @@ ClangCompleteManager::ClangCompleteManager(Config* config,
   });
 }
 
-ClangCompleteManager::~ClangCompleteManager() {}
-
 void ClangCompleteManager::CodeComplete(
     const lsRequestId& id,
     const lsTextDocumentPositionParams& completion_location,
diff --git a/src/clang_complete.h b/src/clang_complete.h
index 8080c0e5..015609a8 100644
--- a/src/clang_complete.h
+++ b/src/clang_complete.h
@@ -72,13 +72,11 @@ struct ClangCompleteManager {
     bool emit_diagnostics = false;
   };
 
-  ClangCompleteManager(Config* config,
-                       Project* project,
+  ClangCompleteManager(Project* project,
                        WorkingFiles* working_files,
                        OnDiagnostic on_diagnostic,
                        OnIndex on_index,
                        OnDropped on_dropped);
-  ~ClangCompleteManager();
 
   // Start a code completion at the given location. |on_complete| will run when
   // completion results are available. |on_complete| may run on any thread.
@@ -120,7 +118,6 @@ struct ClangCompleteManager {
   const int kMaxCompletionSessions = 5;
 
   // Global state.
-  Config* config_;
   Project* project_;
   WorkingFiles* working_files_;
   OnDiagnostic on_diagnostic_;
diff --git a/src/clang_indexer.cc b/src/clang_indexer.cc
index 489eed31..fac4d740 100644
--- a/src/clang_indexer.cc
+++ b/src/clang_indexer.cc
@@ -13,7 +13,6 @@
 #include <algorithm>
 #include <cassert>
 #include <chrono>
-#include <iostream>
 
 // TODO: See if we can use clang_indexLoc_getFileLocation to get a type ref on
 // |Foobar| in DISALLOW_COPY(Foobar)
@@ -279,8 +278,6 @@ struct ConstructorCache {
 };
 
 struct IndexParam {
-  Config* config = nullptr;
-
   std::unordered_set<CXFile> seen_cx_files;
   std::vector<std::string> seen_files;
   FileContentsMap file_contents;
@@ -300,10 +297,9 @@ struct IndexParam {
   NamespaceHelper ns;
   ConstructorCache ctors;
 
-  IndexParam(Config* config,
-             ClangTranslationUnit* tu,
+  IndexParam(ClangTranslationUnit* tu,
              FileConsumer* file_consumer)
-      : config(config), tu(tu), file_consumer(file_consumer) {}
+      : tu(tu), file_consumer(file_consumer) {}
 
 #if CINDEX_HAVE_PRETTY
   CXPrintingPolicy print_policy = nullptr;
@@ -585,7 +581,7 @@ void SetVarDetail(IndexVar* var,
   // string. Shorten it to just "lambda".
   if (type_name.find("(lambda at") != std::string::npos)
     type_name = "lambda";
-  if (param->config->index.comments)
+  if (g_config->index.comments)
     def.comments = cursor.get_comments();
   def.storage = GetStorageClass(clang_Cursor_getStorageClass(cursor.cx_cursor));
 
@@ -870,10 +866,8 @@ CXIdxClientFile OnIndexIncludedFile(CXClientData client_data,
 ClangCursor::VisitResult DumpVisitor(ClangCursor cursor,
                                      ClangCursor parent,
                                      int* level) {
-  for (int i = 0; i < *level; ++i)
-    std::cerr << "  ";
-  std::cerr << ToString(cursor.get_kind()) << " " << cursor.get_spell_name()
-            << std::endl;
+  fprintf(stderr, "%*s%s %s\n", *level * 2, "",
+          ToString(cursor.get_kind()).c_str(), cursor.get_spell_name().c_str());
 
   *level += 1;
   cursor.VisitChildren(&DumpVisitor, level);
@@ -1248,7 +1242,7 @@ ClangCursor::VisitResult VisitMacroDefinitionAndExpansions(ClangCursor cursor,
         var_def->def.hover =
             "#define " + GetDocumentContentInRange(param->tu->cx_tu, cx_extent);
         var_def->def.kind = lsSymbolKind::Macro;
-        if (param->config->index.comments)
+        if (g_config->index.comments)
           var_def->def.comments = cursor.get_comments();
         var_def->def.spell =
             SetUse(db, decl_loc_spelling, parent, Role::Definition);
@@ -1615,7 +1609,7 @@ void OnIndexDeclaration(CXClientData client_data, const CXIdxDeclInfo* decl) {
 
       IndexFuncId func_id = db->ToFuncId(decl_cursor_resolved.cx_cursor);
       IndexFunc* func = db->Resolve(func_id);
-      if (param->config->index.comments)
+      if (g_config->index.comments)
         func->def.comments = cursor.get_comments();
       func->def.kind = GetSymbolKind(decl->entityInfo->kind);
       func->def.storage =
@@ -1763,7 +1757,7 @@ void OnIndexDeclaration(CXClientData client_data, const CXIdxDeclInfo* decl) {
       SetTypeName(type, decl_cursor, decl->semanticContainer,
                   decl->entityInfo->name, param);
       type->def.kind = GetSymbolKind(decl->entityInfo->kind);
-      if (param->config->index.comments)
+      if (g_config->index.comments)
         type->def.comments = decl_cursor.get_comments();
 
       // For Typedef/CXXTypeAlias spanning a few lines, display the declaration
@@ -1808,7 +1802,7 @@ void OnIndexDeclaration(CXClientData client_data, const CXIdxDeclInfo* decl) {
       SetTypeName(type, cursor, decl->semanticContainer, decl->entityInfo->name,
                   param);
       type->def.kind = GetSymbolKind(decl->entityInfo->kind);
-      if (param->config->index.comments)
+      if (g_config->index.comments)
         type->def.comments = cursor.get_comments();
       // }
 
@@ -2099,7 +2093,7 @@ void OnIndexReference(CXClientData client_data, const CXIdxEntityRefInfo* ref) {
 
       bool is_template = ref->referencedEntity->templateKind !=
                          CXIdxEntityCXXTemplateKind::CXIdxEntity_NonTemplate;
-      if (param->config->index.attributeMakeCallsToCtor && is_template &&
+      if (g_config->index.attributeMakeCallsToCtor && is_template &&
           str_begin("make", ref->referencedEntity->name)) {
         // Try to find the return type of called function. That type will have
         // the constructor function we add a usage to.
@@ -2154,7 +2148,6 @@ void OnIndexReference(CXClientData client_data, const CXIdxEntityRefInfo* ref) {
 }
 
 std::vector<std::unique_ptr<IndexFile>> Parse(
-    Config* config,
     FileConsumerSharedState* file_consumer_shared,
     std::string file,
     const std::vector<std::string>& args,
@@ -2162,7 +2155,7 @@ std::vector<std::unique_ptr<IndexFile>> Parse(
     PerformanceImportFile* perf,
     ClangIndex* index,
     bool dump_ast) {
-  if (!config->index.enabled)
+  if (!g_config->index.enabled)
     return {};
 
   file = NormalizePath(file);
@@ -2190,12 +2183,11 @@ std::vector<std::unique_ptr<IndexFile>> Parse(
   if (dump_ast)
     Dump(clang_getTranslationUnitCursor(tu->cx_tu));
 
-  return ParseWithTu(config, file_consumer_shared, perf, tu.get(), index, file,
+  return ParseWithTu(file_consumer_shared, perf, tu.get(), index, file,
                      args, unsaved_files);
 }
 
 std::vector<std::unique_ptr<IndexFile>> ParseWithTu(
-    Config* config,
     FileConsumerSharedState* file_consumer_shared,
     PerformanceImportFile* perf,
     ClangTranslationUnit* tu,
@@ -2218,7 +2210,7 @@ std::vector<std::unique_ptr<IndexFile>> ParseWithTu(
   callback.indexEntityReference = &OnIndexReference;
 
   FileConsumer file_consumer(file_consumer_shared, file);
-  IndexParam param(config, tu, &file_consumer);
+  IndexParam param(tu, &file_consumer);
   for (const CXUnsavedFile& contents : file_contents) {
     param.file_contents[contents.Filename] = FileContents(
         contents.Filename, std::string(contents.Contents, contents.Length));
diff --git a/src/clang_utils.cc b/src/clang_utils.cc
index 20b55ff5..4a62db7d 100644
--- a/src/clang_utils.cc
+++ b/src/clang_utils.cc
@@ -109,7 +109,7 @@ std::string FileName(CXFile file) {
   CXString cx_name = clang_getFileName(file);
   std::string ret = NormalizePath(ToString(cx_name));
   // Resolve /usr/include/c++/7.3.0 symlink.
-  if (!StartsWith(ret, g_config.projectRoot))
+  if (!StartsWith(ret, g_config->projectRoot))
     ret = fs::canonical(ret);
   return ret;
 }
diff --git a/src/command_line.cc b/src/command_line.cc
index 10027c34..215290ea 100644
--- a/src/command_line.cc
+++ b/src/command_line.cc
@@ -110,8 +110,7 @@ See more on https://github.com/MaskRay/ccls/wiki
 // QUERYDB MAIN ////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////
 
-bool QueryDbMainLoop(Config* config,
-                     QueryDatabase* db,
+bool QueryDbMainLoop(QueryDatabase* db,
                      MultiQueueWaiter* waiter,
                      Project* project,
                      FileConsumerSharedState* file_consumer_shared,
@@ -147,7 +146,7 @@ bool QueryDbMainLoop(Config* config,
   // TODO: consider rate-limiting and checking for IPC messages so we don't
   // block requests / we can serve partial requests.
 
-  if (QueryDb_ImportMain(config, db, import_manager, status, semantic_cache,
+  if (QueryDb_ImportMain(db, import_manager, status, semantic_cache,
                          working_files)) {
     did_work = true;
   }
@@ -156,7 +155,6 @@ bool QueryDbMainLoop(Config* config,
 }
 
 void RunQueryDbThread(const std::string& bin_name,
-                      Config* config,
                       MultiQueueWaiter* querydb_waiter,
                       MultiQueueWaiter* indexer_waiter) {
   Project project;
@@ -166,14 +164,14 @@ void RunQueryDbThread(const std::string& bin_name,
   DiagnosticsEngine diag_engine;
 
   ClangCompleteManager clang_complete(
-      config, &project, &working_files,
+      &project, &working_files,
       [&](std::string path, std::vector<lsDiagnostic> diagnostics) {
         diag_engine.Publish(&working_files, path, diagnostics);
       },
       [&](ClangTranslationUnit* tu, const std::vector<CXUnsavedFile>& unsaved,
           const std::string& path, const std::vector<std::string>& args) {
-        IndexWithTuFromCodeCompletion(config, &file_consumer_shared, tu,
-                                      unsaved, path, args);
+        IndexWithTuFromCodeCompletion(&file_consumer_shared, tu, unsaved, path,
+                                      args);
       },
       [](lsRequestId id) {
         if (!std::holds_alternative<std::monostate>(id)) {
@@ -187,7 +185,7 @@ void RunQueryDbThread(const std::string& bin_name,
         }
       });
 
-  IncludeComplete include_complete(config, &project);
+  IncludeComplete include_complete(&project);
   auto global_code_complete_cache = std::make_unique<CodeCompleteCache>();
   auto non_global_code_complete_cache = std::make_unique<CodeCompleteCache>();
   auto signature_cache = std::make_unique<CodeCompleteCache>();
@@ -198,7 +196,6 @@ void RunQueryDbThread(const std::string& bin_name,
 
   // Setup shared references.
   for (MessageHandler* handler : *MessageHandler::message_handlers) {
-    handler->config = config;
     handler->db = &db;
     handler->waiter = indexer_waiter;
     handler->project = &project;
@@ -221,7 +218,7 @@ void RunQueryDbThread(const std::string& bin_name,
   SetCurrentThreadName("querydb");
   while (true) {
     bool did_work = QueryDbMainLoop(
-        config, &db, querydb_waiter, &project, &file_consumer_shared,
+        &db, querydb_waiter, &project, &file_consumer_shared,
         &import_manager, &import_pipeline_status, &timestamp_manager,
         &semantic_cache, &working_files, &clang_complete, &include_complete,
         global_code_complete_cache.get(), non_global_code_complete_cache.get(),
@@ -247,8 +244,7 @@ void RunQueryDbThread(const std::string& bin_name,
 // blocks.
 //
 // |ipc| is connected to a server.
-void LaunchStdinLoop(Config* config,
-                     std::unordered_map<MethodType, Timer>* request_times) {
+void LaunchStdinLoop(std::unordered_map<MethodType, Timer>* request_times) {
   // If flushing cin requires flushing cout there could be deadlocks in some
   // clients.
   std::cin.tie(nullptr);
@@ -317,13 +313,12 @@ void LaunchStdoutThread(std::unordered_map<MethodType, Timer>* request_times,
 }
 
 void LanguageServerMain(const std::string& bin_name,
-                        Config* config,
                         MultiQueueWaiter* querydb_waiter,
                         MultiQueueWaiter* indexer_waiter,
                         MultiQueueWaiter* stdout_waiter) {
   std::unordered_map<MethodType, Timer> request_times;
 
-  LaunchStdinLoop(config, &request_times);
+  LaunchStdinLoop(&request_times);
 
   // We run a dedicated thread for writing to stdout because there can be an
   // unknown number of delays when output information.
@@ -331,7 +326,7 @@ void LanguageServerMain(const std::string& bin_name,
 
   // Start querydb which takes over this thread. The querydb will launch
   // indexer threads as needed.
-  RunQueryDbThread(bin_name, config, querydb_waiter, indexer_waiter);
+  RunQueryDbThread(bin_name, querydb_waiter, indexer_waiter);
 }
 
 int main(int argc, char** argv) {
@@ -410,9 +405,7 @@ int main(int argc, char** argv) {
       }
     }
 
-    // std::cerr << "Running language server" << std::endl;
-    auto config = std::make_unique<Config>();
-    LanguageServerMain(argv[0], config.get(), &querydb_waiter, &indexer_waiter,
+    LanguageServerMain(argv[0], &querydb_waiter, &indexer_waiter,
                        &stdout_waiter);
   }
 
diff --git a/src/config.cc b/src/config.cc
index a98b1a1a..68cdecc4 100644
--- a/src/config.cc
+++ b/src/config.cc
@@ -1,3 +1,3 @@
 #include "config.h"
 
-Config g_config;
+std::unique_ptr<Config> g_config;
diff --git a/src/config.h b/src/config.h
index 5968b91c..196e564f 100644
--- a/src/config.h
+++ b/src/config.h
@@ -2,6 +2,7 @@
 
 #include "serializer.h"
 
+#include <memory>
 #include <string>
 
 /*
@@ -197,6 +198,10 @@ struct Config {
     // be logged.
     bool logSkippedPaths = false;
 
+    // Allow indexing on textDocument/didChange.
+    // May be too slow for big projects, so it is off by default.
+    bool onDidChange = false;
+
     // Number of indexer threads. If 0, 80% of cores are used.
     int threads = 0;
 
@@ -212,10 +217,6 @@ struct Config {
     bool sort = true;
   } workspaceSymbol;
 
-  // Allow indexing on textDocument/didChange.
-  // May be too slow for big projects, so it is off by default.
-  bool enableIndexOnDidChange = false;
-
   struct Xref {
     // If true, |Location[]| response will include lexical container.
     bool container = false;
@@ -249,6 +250,7 @@ MAKE_REFLECT_STRUCT(Config::Index,
                     comments,
                     enabled,
                     logSkippedPaths,
+                    onDidChange,
                     threads,
                     whitelist);
 MAKE_REFLECT_STRUCT(Config::WorkspaceSymbol, maxNum, sort);
@@ -276,9 +278,7 @@ MAKE_REFLECT_STRUCT(Config,
                     index,
                     workspaceSymbol,
                     xref,
-                    
-                    enableIndexOnDidChange,
 
                     dumpAST);
 
-extern Config g_config;
+extern std::unique_ptr<Config> g_config;
diff --git a/src/diagnostics_engine.cc b/src/diagnostics_engine.cc
index 75dfe4a4..3e7ce0f7 100644
--- a/src/diagnostics_engine.cc
+++ b/src/diagnostics_engine.cc
@@ -4,10 +4,10 @@
 
 #include <chrono>
 
-void DiagnosticsEngine::Init(Config* config) {
-  frequencyMs_ = config->diagnostics.frequencyMs;
-  match_ = std::make_unique<GroupMatch>(config->diagnostics.whitelist,
-                                        config->diagnostics.blacklist);
+void DiagnosticsEngine::Init() {
+  frequencyMs_ = g_config->diagnostics.frequencyMs;
+  match_ = std::make_unique<GroupMatch>(g_config->diagnostics.whitelist,
+                                        g_config->diagnostics.blacklist);
 }
 
 void DiagnosticsEngine::Publish(WorkingFiles* working_files,
diff --git a/src/diagnostics_engine.h b/src/diagnostics_engine.h
index ec1066fb..2d3e7aee 100644
--- a/src/diagnostics_engine.h
+++ b/src/diagnostics_engine.h
@@ -9,7 +9,7 @@ class DiagnosticsEngine {
   int frequencyMs_;
 
  public:
-  void Init(Config*);
+  void Init();
   void Publish(WorkingFiles* working_files,
                std::string path,
                std::vector<lsDiagnostic> diagnostics);
diff --git a/src/fuzzy_match.cc b/src/fuzzy_match.cc
index 006290d5..8bbd6b8c 100644
--- a/src/fuzzy_match.cc
+++ b/src/fuzzy_match.cc
@@ -160,7 +160,7 @@ TEST_SUITE("fuzzy_match") {
     CHECK(Ranks("ab", {"ab", "aoo_boo", "acb"}));
     CHECK(Ranks("CC", {"CamelCase", "camelCase", "camelcase"}));
     CHECK(Ranks("cC", {"camelCase", "CamelCase", "camelcase"}));
-    CHECK(Ranks("c c", {"camel case", "camelCase", "CamelCase", "camelcase",
+    CHECK(Ranks("c c", {"camelCase", "camel case", "CamelCase", "camelcase",
                         "camel ace"}));
     CHECK(Ranks("Da.Te",
                 {"Data.Text", "Data.Text.Lazy", "Data.Aeson.Encoding.text"}));
diff --git a/src/iindexer.cc b/src/iindexer.cc
index 1c77005d..9b28942d 100644
--- a/src/iindexer.cc
+++ b/src/iindexer.cc
@@ -7,19 +7,18 @@ struct ClangIndexer : IIndexer {
   ~ClangIndexer() override = default;
 
   std::vector<std::unique_ptr<IndexFile>> Index(
-      Config* config,
       FileConsumerSharedState* file_consumer_shared,
       std::string file,
       const std::vector<std::string>& args,
       const std::vector<FileContents>& file_contents,
       PerformanceImportFile* perf) override {
     bool dump_ast = false;
-    for (const std::string& pattern : config->dumpAST)
+    for (const std::string& pattern : g_config->dumpAST)
       if (file.find(pattern) != std::string::npos) {
         dump_ast = true;
         break;
       }
-    return Parse(config, file_consumer_shared, file, args, file_contents, perf,
+    return Parse(file_consumer_shared, file, args, file_contents, perf,
                  &index, dump_ast);
   }
 
@@ -51,7 +50,6 @@ struct TestIndexer : IIndexer {
   ~TestIndexer() override = default;
 
   std::vector<std::unique_ptr<IndexFile>> Index(
-      Config* config,
       FileConsumerSharedState* file_consumer_shared,
       std::string file,
       const std::vector<std::string>& args,
diff --git a/src/iindexer.h b/src/iindexer.h
index df0e2d8b..84b73a84 100644
--- a/src/iindexer.h
+++ b/src/iindexer.h
@@ -12,7 +12,6 @@
 //    like IndexFile
 //  - rename this file to indexer.h
 
-struct Config;
 struct IndexFile;
 struct FileContents;
 struct FileConsumerSharedState;
@@ -35,7 +34,6 @@ struct IIndexer {
 
   virtual ~IIndexer() = default;
   virtual std::vector<std::unique_ptr<IndexFile>> Index(
-      Config* config,
       FileConsumerSharedState* file_consumer_shared,
       std::string file,
       const std::vector<std::string>& args,
diff --git a/src/import_pipeline.cc b/src/import_pipeline.cc
index 9e0eb346..3f8d8939 100644
--- a/src/import_pipeline.cc
+++ b/src/import_pipeline.cc
@@ -95,15 +95,15 @@ long long GetCurrentTimeInMilliseconds() {
 }
 
 struct ActiveThread {
-  ActiveThread(Config* config, ImportPipelineStatus* status)
-      : config_(config), status_(status) {
-    if (config_->progressReportFrequencyMs < 0)
+  ActiveThread(ImportPipelineStatus* status)
+      : status_(status) {
+    if (g_config->progressReportFrequencyMs < 0)
       return;
 
     ++status_->num_active_threads;
   }
   ~ActiveThread() {
-    if (config_->progressReportFrequencyMs < 0)
+    if (g_config->progressReportFrequencyMs < 0)
       return;
 
     --status_->num_active_threads;
@@ -122,7 +122,7 @@ struct ActiveThread {
     out.params.activeThreads = status_->num_active_threads;
 
     // Ignore this progress update if the last update was too recent.
-    if (config_->progressReportFrequencyMs != 0) {
+    if (g_config->progressReportFrequencyMs != 0) {
       // Make sure we output a status update if queue lengths are zero.
       bool all_zero =
           out.params.indexRequestCount == 0 && out.params.doIdMapCount == 0 &&
@@ -133,13 +133,12 @@ struct ActiveThread {
           GetCurrentTimeInMilliseconds() < status_->next_progress_output)
         return;
       status_->next_progress_output =
-          GetCurrentTimeInMilliseconds() + config_->progressReportFrequencyMs;
+          GetCurrentTimeInMilliseconds() + g_config->progressReportFrequencyMs;
     }
 
     QueueManager::WriteStdout(kMethodType_Unknown, out);
   }
 
-  Config* config_;
   ImportPipelineStatus* status_;
 };
 
@@ -356,8 +355,7 @@ std::vector<FileContents> PreloadFileContents(
   return file_contents;
 }
 
-void ParseFile(Config* config,
-               DiagnosticsEngine* diag_engine,
+void ParseFile(DiagnosticsEngine* diag_engine,
                WorkingFiles* working_files,
                FileConsumerSharedState* file_consumer_shared,
                TimestampManager* timestamp_manager,
@@ -390,11 +388,11 @@ void ParseFile(Config* config,
 
   std::vector<Index_DoIdMap> result;
   PerformanceImportFile perf;
-  auto indexes = indexer->Index(config, file_consumer_shared, path_to_index,
-                                entry.args, file_contents, &perf);
+  auto indexes = indexer->Index(file_consumer_shared, path_to_index, entry.args,
+                                file_contents, &perf);
 
   if (indexes.empty()) {
-    if (config->index.enabled &&
+    if (g_config->index.enabled &&
         !std::holds_alternative<std::monostate>(request.id)) {
       Out_Error out;
       out.id = request.id;
@@ -428,7 +426,6 @@ void ParseFile(Config* config,
 }
 
 bool IndexMain_DoParse(
-    Config* config,
     DiagnosticsEngine* diag_engine,
     WorkingFiles* working_files,
     FileConsumerSharedState* file_consumer_shared,
@@ -444,7 +441,7 @@ bool IndexMain_DoParse(
   Project::Entry entry;
   entry.filename = request->path;
   entry.args = request->args;
-  ParseFile(config, diag_engine, working_files, file_consumer_shared,
+  ParseFile(diag_engine, working_files, file_consumer_shared,
             timestamp_manager, modification_timestamp_fetcher, import_manager,
             indexer, request.value(), entry);
   return true;
@@ -544,7 +541,6 @@ ImportPipelineStatus::ImportPipelineStatus()
 // real-time indexing.
 // TODO: add option to disable this.
 void IndexWithTuFromCodeCompletion(
-    Config* config,
     FileConsumerSharedState* file_consumer_shared,
     ClangTranslationUnit* tu,
     const std::vector<CXUnsavedFile>& file_contents,
@@ -554,10 +550,10 @@ void IndexWithTuFromCodeCompletion(
 
   PerformanceImportFile perf;
   ClangIndex index;
-  auto indexes = ParseWithTu(config, file_consumer_shared, &perf, tu, &index,
-                             path, args, file_contents);
+  auto indexes = ParseWithTu(file_consumer_shared, &perf, tu, &index, path,
+                             args, file_contents);
   if (indexes.empty())
-      return;
+    return;
 
   std::vector<Index_DoIdMap> result;
   for (std::unique_ptr<IndexFile>& new_index : indexes) {
@@ -579,8 +575,7 @@ void IndexWithTuFromCodeCompletion(
   QueueManager::instance()->do_id_map.EnqueueAll(std::move(result));
 }
 
-void Indexer_Main(Config* config,
-                  DiagnosticsEngine* diag_engine,
+void Indexer_Main(DiagnosticsEngine* diag_engine,
                   FileConsumerSharedState* file_consumer_shared,
                   TimestampManager* timestamp_manager,
                   ImportManager* import_manager,
@@ -597,7 +592,7 @@ void Indexer_Main(Config* config,
     bool did_work = false;
 
     {
-      ActiveThread active_thread(config, status);
+      ActiveThread active_thread(status);
 
       // TODO: process all off IndexMain_DoIndex before calling
       // IndexMain_DoCreateIndexUpdate for better icache behavior. We need to
@@ -608,7 +603,7 @@ void Indexer_Main(Config* config,
       // IndexMain_DoCreateIndexUpdate so we don't starve querydb from doing any
       // work. Running both also lets the user query the partially constructed
       // index.
-      did_work = IndexMain_DoParse(config, diag_engine, working_files,
+      did_work = IndexMain_DoParse(diag_engine, working_files,
                                    file_consumer_shared, timestamp_manager,
                                    &modification_timestamp_fetcher,
                                    import_manager, indexer.get()) ||
@@ -723,15 +718,14 @@ void QueryDb_OnIndexed(QueueManager* queue,
 
 }  // namespace
 
-bool QueryDb_ImportMain(Config* config,
-                        QueryDatabase* db,
+bool QueryDb_ImportMain(QueryDatabase* db,
                         ImportManager* import_manager,
                         ImportPipelineStatus* status,
                         SemanticHighlightSymbolCache* semantic_cache,
                         WorkingFiles* working_files) {
   auto* queue = QueueManager::instance();
 
-  ActiveThread active_thread(config, status);
+  ActiveThread active_thread(status);
 
   bool did_work = false;
 
@@ -760,16 +754,17 @@ bool QueryDb_ImportMain(Config* config,
 TEST_SUITE("ImportPipeline") {
   struct Fixture {
     Fixture() {
+      g_config = std::make_unique<Config>();
       QueueManager::Init(&querydb_waiter, &indexer_waiter, &stdout_waiter);
 
       queue = QueueManager::instance();
       cache_manager = ICacheManager::MakeFake({});
       indexer = IIndexer::MakeTestIndexer({});
-      diag_engine.Init(&config);
+      diag_engine.Init();
     }
 
     bool PumpOnce() {
-      return IndexMain_DoParse(&config, &diag_engine, &working_files,
+      return IndexMain_DoParse(&diag_engine, &working_files,
                                &file_consumer_shared, &timestamp_manager,
                                &modification_timestamp_fetcher, &import_manager,
                                indexer.get());
@@ -788,7 +783,6 @@ TEST_SUITE("ImportPipeline") {
     MultiQueueWaiter stdout_waiter;
 
     QueueManager* queue = nullptr;
-    Config config;
     DiagnosticsEngine diag_engine;
     WorkingFiles working_files;
     FileConsumerSharedState file_consumer_shared;
diff --git a/src/import_pipeline.h b/src/import_pipeline.h
index 7ede6ae6..f7e750f9 100644
--- a/src/import_pipeline.h
+++ b/src/import_pipeline.h
@@ -9,7 +9,6 @@
 #include <vector>
 
 struct ClangTranslationUnit;
-struct Config;
 class DiagnosticsEngine;
 struct FileConsumerSharedState;
 struct ImportManager;
@@ -28,15 +27,13 @@ struct ImportPipelineStatus {
 };
 
 void IndexWithTuFromCodeCompletion(
-    Config* config,
     FileConsumerSharedState* file_consumer_shared,
     ClangTranslationUnit* tu,
     const std::vector<CXUnsavedFile>& file_contents,
     const std::string& path,
     const std::vector<std::string>& args);
 
-void Indexer_Main(Config* config,
-                  DiagnosticsEngine* diag_engine,
+void Indexer_Main(DiagnosticsEngine* diag_engine,
                   FileConsumerSharedState* file_consumer_shared,
                   TimestampManager* timestamp_manager,
                   ImportManager* import_manager,
@@ -45,8 +42,7 @@ void Indexer_Main(Config* config,
                   WorkingFiles* working_files,
                   MultiQueueWaiter* waiter);
 
-bool QueryDb_ImportMain(Config* config,
-                        QueryDatabase* db,
+bool QueryDb_ImportMain(QueryDatabase* db,
                         ImportManager* import_manager,
                         ImportPipelineStatus* status,
                         SemanticHighlightSymbolCache* semantic_cache,
diff --git a/src/include_complete.cc b/src/include_complete.cc
index 2e2ef83e..f9d55f92 100644
--- a/src/include_complete.cc
+++ b/src/include_complete.cc
@@ -13,14 +13,14 @@ struct CompletionCandidate {
   lsCompletionItem completion_item;
 };
 
-std::string ElideLongPath(Config* config, const std::string& path) {
-  if (config->completion.includeMaxPathSize <= 0)
+std::string ElideLongPath(const std::string& path) {
+  if (g_config->completion.includeMaxPathSize <= 0)
     return path;
 
-  if ((int)path.size() <= config->completion.includeMaxPathSize)
+  if ((int)path.size() <= g_config->completion.includeMaxPathSize)
     return path;
 
-  size_t start = path.size() - config->completion.includeMaxPathSize;
+  size_t start = path.size() - g_config->completion.includeMaxPathSize;
   return ".." + path.substr(start + 2);
 }
 
@@ -73,12 +73,11 @@ bool TrimPath(Project* project,
   return angle;
 }
 
-lsCompletionItem BuildCompletionItem(Config* config,
-                                     const std::string& path,
+lsCompletionItem BuildCompletionItem(const std::string& path,
                                      bool use_angle_brackets,
                                      bool is_stl) {
   lsCompletionItem item;
-  item.label = ElideLongPath(config, path);
+  item.label = ElideLongPath(path);
   item.detail = path;  // the include path, used in de-duplicating
   item.textEdit = lsTextEdit();
   item.textEdit->newText = path;
@@ -96,8 +95,8 @@ lsCompletionItem BuildCompletionItem(Config* config,
 
 }  // namespace
 
-IncludeComplete::IncludeComplete(Config* config, Project* project)
-    : is_scanning(false), config_(config), project_(project) {}
+IncludeComplete::IncludeComplete(Project* project)
+    : is_scanning(false), project_(project) {}
 
 void IncludeComplete::Rescan() {
   if (is_scanning)
@@ -107,17 +106,17 @@ void IncludeComplete::Rescan() {
   absolute_path_to_completion_item.clear();
   inserted_paths.clear();
 
-  if (!match_ && (!config_->completion.includeWhitelist.empty() ||
-                  !config_->completion.includeBlacklist.empty()))
-    match_ = std::make_unique<GroupMatch>(config_->completion.includeWhitelist,
-                                          config_->completion.includeBlacklist);
+  if (!match_ && (g_config->completion.includeWhitelist.size() ||
+                  g_config->completion.includeBlacklist.size()))
+    match_ = std::make_unique<GroupMatch>(g_config->completion.includeWhitelist,
+                                          g_config->completion.includeBlacklist);
 
   is_scanning = true;
   StartThread("scan_includes", [this]() {
     Timer timer;
 
     InsertStlIncludes();
-    InsertIncludesFromDirectory(config_->projectRoot,
+    InsertIncludesFromDirectory(g_config->projectRoot,
                                 false /*use_angle_brackets*/);
     for (const std::string& dir : project_->quote_include_directories)
       InsertIncludesFromDirectory(dir, false /*use_angle_brackets*/);
@@ -150,16 +149,16 @@ void IncludeComplete::InsertCompletionItem(const std::string& absolute_path,
 }
 
 void IncludeComplete::AddFile(const std::string& absolute_path) {
-  if (!EndsWithAny(absolute_path, config_->completion.includeSuffixWhitelist))
+  if (!EndsWithAny(absolute_path, g_config->completion.includeSuffixWhitelist))
     return;
   if (match_ && !match_->IsMatch(absolute_path))
     return;
 
   std::string trimmed_path = absolute_path;
   bool use_angle_brackets =
-      TrimPath(project_, config_->projectRoot, &trimmed_path);
-  lsCompletionItem item = BuildCompletionItem(
-      config_, trimmed_path, use_angle_brackets, false /*is_stl*/);
+      TrimPath(project_, g_config->projectRoot, &trimmed_path);
+  lsCompletionItem item =
+      BuildCompletionItem(trimmed_path, use_angle_brackets, false /*is_stl*/);
 
   std::unique_lock<std::mutex> lock(completion_items_mutex, std::defer_lock);
   if (is_scanning)
@@ -180,15 +179,15 @@ void IncludeComplete::InsertIncludesFromDirectory(std::string directory,
   GetFilesInFolder(
       directory, true /*recursive*/, false /*add_folder_to_path*/,
       [&](const std::string& path) {
-        if (!EndsWithAny(path, config_->completion.includeSuffixWhitelist))
+        if (!EndsWithAny(path, g_config->completion.includeSuffixWhitelist))
           return;
         if (match_ && !match_->IsMatch(directory + path))
           return;
 
         CompletionCandidate candidate;
         candidate.absolute_path = directory + path;
-        candidate.completion_item = BuildCompletionItem(
-            config_, path, use_angle_brackets, false /*is_stl*/);
+        candidate.completion_item =
+            BuildCompletionItem(path, use_angle_brackets, false /*is_stl*/);
         results.push_back(candidate);
       });
 
@@ -202,7 +201,7 @@ void IncludeComplete::InsertStlIncludes() {
   std::lock_guard<std::mutex> lock(completion_items_mutex);
   for (const char* stl_header : kStandardLibraryIncludes) {
     completion_items.push_back(BuildCompletionItem(
-        config_, stl_header, true /*use_angle_brackets*/, true /*is_stl*/));
+        stl_header, true /*use_angle_brackets*/, true /*is_stl*/));
   }
 }
 
diff --git a/src/include_complete.h b/src/include_complete.h
index 47438113..9cbee1ab 100644
--- a/src/include_complete.h
+++ b/src/include_complete.h
@@ -10,7 +10,7 @@ struct GroupMatch;
 struct Project;
 
 struct IncludeComplete {
-  IncludeComplete(Config* config, Project* project);
+  IncludeComplete(Project* project);
 
   // Starts scanning directories. Clears existing cache.
   void Rescan();
@@ -45,7 +45,6 @@ struct IncludeComplete {
   std::unordered_map<std::string, int> inserted_paths;
 
   // Cached references
-  Config* config_;
   Project* project_;
   std::unique_ptr<GroupMatch> match_;
 };
diff --git a/src/indexer.h b/src/indexer.h
index 8857c2bd..8a6decea 100644
--- a/src/indexer.h
+++ b/src/indexer.h
@@ -518,7 +518,6 @@ struct NamespaceHelper {
 // |dependencies| are the existing dependencies of |import_file| if this is a
 // reparse.
 std::vector<std::unique_ptr<IndexFile>> Parse(
-    Config* config,
     FileConsumerSharedState* file_consumer_shared,
     std::string file,
     const std::vector<std::string>& args,
@@ -527,7 +526,6 @@ std::vector<std::unique_ptr<IndexFile>> Parse(
     ClangIndex* index,
     bool dump_ast = false);
 std::vector<std::unique_ptr<IndexFile>> ParseWithTu(
-    Config* config,
     FileConsumerSharedState* file_consumer_shared,
     PerformanceImportFile* perf,
     ClangTranslationUnit* tu,
diff --git a/src/lex_utils.cc b/src/lex_utils.cc
index cb3ad0f5..deb6ece9 100644
--- a/src/lex_utils.cc
+++ b/src/lex_utils.cc
@@ -3,7 +3,6 @@
 #include <doctest/doctest.h>
 
 #include <algorithm>
-#include <iostream>
 
 // VSCode (UTF-16) disagrees with Emacs lsp-mode (UTF-8) on how to represent
 // text documents.
diff --git a/src/lsp.cc b/src/lsp.cc
index eb1825a6..251a52d7 100644
--- a/src/lsp.cc
+++ b/src/lsp.cc
@@ -7,7 +7,6 @@
 #include <loguru.hpp>
 
 #include <stdio.h>
-#include <iostream>
 
 MessageRegistry* MessageRegistry::instance_ = nullptr;
 
diff --git a/src/message_handler.cc b/src/message_handler.cc
index 897d9137..cdc2d98a 100644
--- a/src/message_handler.cc
+++ b/src/message_handler.cc
@@ -101,9 +101,9 @@ SemanticHighlightSymbolCache::Entry::GetMapForSymbol_(SymbolKind kind) {
 SemanticHighlightSymbolCache::SemanticHighlightSymbolCache()
     : cache_(kCacheSize) {}
 
-void SemanticHighlightSymbolCache::Init(Config* config) {
-  match_ = std::make_unique<GroupMatch>(config->highlight.whitelist,
-                                        config->highlight.blacklist);
+void SemanticHighlightSymbolCache::Init() {
+  match_ = std::make_unique<GroupMatch>(g_config->highlight.whitelist,
+                                        g_config->highlight.blacklist);
 }
 
 std::shared_ptr<SemanticHighlightSymbolCache::Entry>
diff --git a/src/message_handler.h b/src/message_handler.h
index ea6c67e3..ca6c7a2f 100644
--- a/src/message_handler.h
+++ b/src/message_handler.h
@@ -55,7 +55,7 @@ struct SemanticHighlightSymbolCache {
   std::unique_ptr<GroupMatch> match_;
 
   SemanticHighlightSymbolCache();
-  void Init(Config*);
+  void Init();
   std::shared_ptr<Entry> GetCacheForFile(const std::string& path);
 };
 
@@ -103,7 +103,6 @@ MAKE_REFLECT_STRUCT(Out_CclsPublishSemanticHighlighting,
   static type type##message_handler_instance_;
 
 struct MessageHandler {
-  Config* config = nullptr;
   QueryDatabase* db = nullptr;
   MultiQueueWaiter* waiter = nullptr;
   Project* project = nullptr;
diff --git a/src/messages/ccls_base.cc b/src/messages/ccls_base.cc
index f1c31f29..cc681986 100644
--- a/src/messages/ccls_base.cc
+++ b/src/messages/ccls_base.cc
@@ -33,15 +33,13 @@ struct Handler_CclsBase : BaseMessageHandler<In_CclsBase> {
          FindSymbolsAtLocation(working_file, file, request->params.position)) {
       if (sym.kind == SymbolKind::Type) {
         if (const auto* def = db->GetType(sym).AnyDef())
-          out.result = GetLsLocationExs(
-              db, working_files, GetDeclarations(db, def->bases),
-              config->xref.container, config->xref.maxNum);
+          out.result = GetLsLocationExs(db, working_files,
+                                        GetDeclarations(db, def->bases));
         break;
       } else if (sym.kind == SymbolKind::Func) {
         if (const auto* def = db->GetFunc(sym).AnyDef())
-          out.result = GetLsLocationExs(
-              db, working_files, GetDeclarations(db, def->bases),
-              config->xref.container, config->xref.maxNum);
+          out.result = GetLsLocationExs(db, working_files,
+                                        GetDeclarations(db, def->bases));
         break;
       }
     }
diff --git a/src/messages/ccls_callers.cc b/src/messages/ccls_callers.cc
index 0e7904fc..db781be9 100644
--- a/src/messages/ccls_callers.cc
+++ b/src/messages/ccls_callers.cc
@@ -35,9 +35,7 @@ struct Handler_CclsCallers : BaseMessageHandler<In_CclsCallers> {
           uses.push_back(func_ref);
         for (Use func_ref : GetUsesForAllDerived(db, func))
           uses.push_back(func_ref);
-        out.result =
-            GetLsLocationExs(db, working_files, uses, config->xref.container,
-                             config->xref.maxNum);
+        out.result = GetLsLocationExs(db, working_files, uses);
         break;
       }
     }
diff --git a/src/messages/ccls_derived.cc b/src/messages/ccls_derived.cc
index ad415ace..d8676211 100644
--- a/src/messages/ccls_derived.cc
+++ b/src/messages/ccls_derived.cc
@@ -30,15 +30,13 @@ struct Handler_CclsDerived : BaseMessageHandler<In_CclsDerived> {
          FindSymbolsAtLocation(working_file, file, request->params.position)) {
       if (sym.kind == SymbolKind::Type) {
         QueryType& type = db->GetType(sym);
-        out.result = GetLsLocationExs(
-            db, working_files, GetDeclarations(db, type.derived),
-            config->xref.container, config->xref.maxNum);
+        out.result = GetLsLocationExs(db, working_files,
+                                      GetDeclarations(db, type.derived));
         break;
       } else if (sym.kind == SymbolKind::Func) {
         QueryFunc& func = db->GetFunc(sym);
-        out.result = GetLsLocationExs(
-            db, working_files, GetDeclarations(db, func.derived),
-            config->xref.container, config->xref.maxNum);
+        out.result = GetLsLocationExs(db, working_files,
+                                      GetDeclarations(db, func.derived));
         break;
       }
     }
diff --git a/src/messages/ccls_freshen_index.cc b/src/messages/ccls_freshen_index.cc
index b56701db..10220b53 100644
--- a/src/messages/ccls_freshen_index.cc
+++ b/src/messages/ccls_freshen_index.cc
@@ -87,8 +87,7 @@ struct Handler_CclsFreshenIndex : BaseMessageHandler<In_CclsFreshenIndex> {
 
     Timer time;
     // Send index requests for every file.
-    project->Index(config, QueueManager::instance(), working_files,
-                   std::monostate());
+    project->Index(QueueManager::instance(), working_files, std::monostate());
     time.ResetAndPrint("[perf] Dispatched $ccls/freshenIndex index requests");
   }
 };
diff --git a/src/messages/ccls_random.cc b/src/messages/ccls_random.cc
index f24471e7..ce0bb437 100644
--- a/src/messages/ccls_random.cc
+++ b/src/messages/ccls_random.cc
@@ -132,12 +132,10 @@ struct Handler_CclsRandom : BaseMessageHandler<In_CclsRandom> {
     for (int i = 0; i < n; i++) {
       sum += x[i];
       if (sum >= roulette) {
-        Maybe<Use> use = GetDefinitionExtent(db, syms[i]);
-        if (!use)
-          continue;
-        if (auto ls_loc = GetLsLocationEx(db, working_files, *use,
-                                          config->xref.container))
-          out.result.push_back(*ls_loc);
+        if (Maybe<Use> use = GetDefinitionExtent(db, syms[i]))
+          if (auto ls_loc = GetLsLocationEx(db, working_files, *use,
+                                            g_config->xref.container))
+            out.result.push_back(*ls_loc);
         break;
       }
     }
diff --git a/src/messages/ccls_vars.cc b/src/messages/ccls_vars.cc
index b9426487..a19803c5 100644
--- a/src/messages/ccls_vars.cc
+++ b/src/messages/ccls_vars.cc
@@ -43,9 +43,8 @@ struct Handler_CclsVars : BaseMessageHandler<In_CclsVars> {
         // fallthrough
         case SymbolKind::Type: {
           QueryType& type = db->types[id.id];
-          out.result = GetLsLocationExs(
-              db, working_files, GetDeclarations(db, type.instances),
-              config->xref.container, config->xref.maxNum);
+          out.result = GetLsLocationExs(db, working_files,
+                                        GetDeclarations(db, type.instances));
           break;
         }
       }
diff --git a/src/messages/initialize.cc b/src/messages/initialize.cc
index d10b971a..1bc34c10 100644
--- a/src/messages/initialize.cc
+++ b/src/messages/initialize.cc
@@ -428,6 +428,7 @@ struct Handler_Initialize : BaseMessageHandler<In_InitializeRequest> {
     JsonWriter json_writer(&writer);
     Reflect(json_writer, request->params.initializationOptions);
     LOG_S(INFO) << "Init parameters: " << output.GetString();
+    std::unique_ptr<Config> config;
 
     if (request->params.rootUri) {
       std::string project_path =
@@ -437,9 +438,9 @@ struct Handler_Initialize : BaseMessageHandler<In_InitializeRequest> {
 
       {
         if (request->params.initializationOptions)
-          *config = *request->params.initializationOptions;
+          config = std::make_unique<Config>(*request->params.initializationOptions);
         else
-          *config = Config();
+          config = std::make_unique<Config>();
         rapidjson::Document reader;
         reader.Parse(g_init_options.c_str());
         if (!reader.HasParseError()) {
@@ -508,32 +509,29 @@ struct Handler_Initialize : BaseMessageHandler<In_InitializeRequest> {
       MakeDirectoryRecursive(config->cacheDirectory + '@' +
                              EscapeFileName(config->projectRoot));
 
-      g_config = *config;
+      g_config = std::move(config);
       Timer time;
-      diag_engine->Init(config);
-      semantic_cache->Init(config);
+      diag_engine->Init();
+      semantic_cache->Init();
 
       // Open up / load the project.
-      project->Load(config, project_path);
+      project->Load(project_path);
       time.ResetAndPrint("[perf] Loaded compilation entries (" +
                          std::to_string(project->entries.size()) + " files)");
 
       // Start indexer threads. Start this after loading the project, as that
       // may take a long time. Indexer threads will emit status/progress
       // reports.
-      if (config->index.threads == 0) {
+      if (g_config->index.threads == 0) {
         // If the user has not specified how many indexers to run, try to
         // guess an appropriate value. Default to 80% utilization.
-        const float kDefaultTargetUtilization = 0.8f;
-        config->index.threads = (int)(std::thread::hardware_concurrency() *
-                                      kDefaultTargetUtilization);
-        if (config->index.threads <= 0)
-          config->index.threads = 1;
+        g_config->index.threads =
+            std::max(int(std::thread::hardware_concurrency() * 0.8), 1);
       }
-      LOG_S(INFO) << "Starting " << config->index.threads << " indexers";
-      for (int i = 0; i < config->index.threads; ++i) {
+      LOG_S(INFO) << "Starting " << g_config->index.threads << " indexers";
+      for (int i = 0; i < g_config->index.threads; ++i) {
         StartThread("indexer" + std::to_string(i), [=]() {
-          Indexer_Main(config, diag_engine, file_consumer_shared,
+          Indexer_Main(diag_engine, file_consumer_shared,
                        timestamp_manager, import_manager,
                        import_pipeline_status, project, working_files, waiter);
         });
@@ -544,8 +542,7 @@ struct Handler_Initialize : BaseMessageHandler<In_InitializeRequest> {
       include_complete->Rescan();
 
       time.Reset();
-      project->Index(config, QueueManager::instance(), working_files,
-                     request->id);
+      project->Index(QueueManager::instance(), working_files, request->id);
       // We need to support multiple concurrent index processes.
       time.ResetAndPrint("[perf] Dispatched initial index requests");
     }
diff --git a/src/messages/text_document_code_lens.cc b/src/messages/text_document_code_lens.cc
index 521268c0..cbe065cb 100644
--- a/src/messages/text_document_code_lens.cc
+++ b/src/messages/text_document_code_lens.cc
@@ -206,7 +206,7 @@ struct Handler_TextDocumentCodeLens
         case SymbolKind::Var: {
           QueryVar& var = db->GetVar(sym);
           const QueryVar::Def* def = var.AnyDef();
-          if (!def || (def->is_local() && !config->codeLens.localVariables))
+          if (!def || (def->is_local() && !g_config->codeLens.localVariables))
             continue;
 
           bool force_display = true;
diff --git a/src/messages/text_document_completion.cc b/src/messages/text_document_completion.cc
index 3c9831b0..b0f62960 100644
--- a/src/messages/text_document_completion.cc
+++ b/src/messages/text_document_completion.cc
@@ -160,9 +160,8 @@ char* tofixedbase64(T input, char* out) {
 // when given 1000+ completion items.
 void FilterAndSortCompletionResponse(
     Out_TextDocumentComplete* complete_response,
-    const std::string& complete_text,
-    bool enable) {
-  if (!enable)
+    const std::string& complete_text) {
+  if (!g_config->completion.filterAndSort)
     return;
 
   ScopedPerfTimer timer{"FilterAndSortCompletionResponse"};
@@ -327,8 +326,7 @@ struct Handler_TextDocumentCompletion : MessageHandler {
                            return k == result.keyword;
                          })) {
           out.result.items = preprocessorKeywordCompletionItems(result.match);
-          FilterAndSortCompletionResponse(&out, result.keyword,
-                                          config->completion.filterAndSort);
+          FilterAndSortCompletionResponse(&out, result.keyword);
         }
       } else if (result.keyword.compare("include") == 0) {
         {
@@ -342,8 +340,7 @@ struct Handler_TextDocumentCompletion : MessageHandler {
             if (quote.empty() || quote == (item.use_angle_brackets_ ? "<" : "\""))
                out.result.items.push_back(item);
         }
-        FilterAndSortCompletionResponse(&out, result.pattern,
-                                        config->completion.filterAndSort);
+        FilterAndSortCompletionResponse(&out, result.pattern);
         DecorateIncludePaths(result.match, &out.result.items);
       }
 
@@ -365,8 +362,7 @@ struct Handler_TextDocumentCompletion : MessageHandler {
             out.result.items = results;
 
             // Emit completion results.
-            FilterAndSortCompletionResponse(&out, existing_completion,
-                                            config->completion.filterAndSort);
+            FilterAndSortCompletionResponse(&out, existing_completion);
             QueueManager::WriteStdout(kMethodType, out);
 
             // Cache completion results.
diff --git a/src/messages/text_document_definition.cc b/src/messages/text_document_definition.cc
index e6e4caf7..15216ace 100644
--- a/src/messages/text_document_definition.cc
+++ b/src/messages/text_document_definition.cc
@@ -105,9 +105,7 @@ struct Handler_TextDocumentDefinition
         if (uses.empty() && on_def)
           uses.push_back(*on_def);
       }
-      AddRange(&out.result,
-               GetLsLocationExs(db, working_files, uses, config->xref.container,
-                                config->xref.maxNum));
+      AddRange(&out.result, GetLsLocationExs(db, working_files, uses));
       if (!out.result.empty())
         break;
     }
@@ -172,7 +170,7 @@ struct Handler_TextDocumentDefinition
           Maybe<Use> use = GetDefinitionSpell(db, db->symbols[best_i]);
           assert(use);
           if (auto ls_loc = GetLsLocationEx(db, working_files, *use,
-                                            config->xref.container))
+                                            g_config->xref.container))
             out.result.push_back(*ls_loc);
         }
       }
diff --git a/src/messages/text_document_did_change.cc b/src/messages/text_document_did_change.cc
index 4f978bc3..5f5d2a71 100644
--- a/src/messages/text_document_did_change.cc
+++ b/src/messages/text_document_did_change.cc
@@ -25,7 +25,7 @@ struct Handler_TextDocumentDidChange
   void Run(In_TextDocumentDidChange* request) override {
     std::string path = request->params.textDocument.uri.GetPath();
     working_files->OnChange(request->params);
-    if (config->enableIndexOnDidChange) {
+    if (g_config->index.onDidChange) {
       std::optional<std::string> content = ReadContent(path);
       if (!content) {
         LOG_S(ERROR) << "Unable to read file content after saving " << path;
diff --git a/src/messages/text_document_did_save.cc b/src/messages/text_document_did_save.cc
index 9596ddb4..29ceffa8 100644
--- a/src/messages/text_document_did_save.cc
+++ b/src/messages/text_document_did_save.cc
@@ -47,7 +47,7 @@ struct Handler_TextDocumentDidSave
     //      mutex and check to see if we should skip the current request.
     //      if so, ignore that index response.
     // TODO: send as priority request
-    if (!config->enableIndexOnDidChange) {
+    if (!g_config->index.onDidChange) {
       std::optional<std::string> content = ReadContent(path);
       if (!content) {
         LOG_S(ERROR) << "Unable to read file content after saving " << path;
diff --git a/src/messages/text_document_references.cc b/src/messages/text_document_references.cc
index 40f99531..ba90af9a 100644
--- a/src/messages/text_document_references.cc
+++ b/src/messages/text_document_references.cc
@@ -56,7 +56,7 @@ struct Handler_TextDocumentReferences
 
     Out_TextDocumentReferences out;
     out.id = request->id;
-    bool container = config->xref.container;
+    bool container = g_config->xref.container;
 
     for (const SymbolRef& sym :
          FindSymbolsAtLocation(working_file, file, request->params.position)) {
@@ -94,8 +94,8 @@ struct Handler_TextDocumentReferences
           break;
         }
 
-    if ((int)out.result.size() >= config->xref.maxNum)
-      out.result.resize(config->xref.maxNum);
+    if ((int)out.result.size() >= g_config->xref.maxNum)
+      out.result.resize(g_config->xref.maxNum);
     QueueManager::WriteStdout(kMethodType, out);
   }
 };
diff --git a/src/messages/text_document_type_definition.cc b/src/messages/text_document_type_definition.cc
index 4226c558..738636e6 100644
--- a/src/messages/text_document_type_definition.cc
+++ b/src/messages/text_document_type_definition.cc
@@ -50,7 +50,7 @@ struct Handler_TextDocumentTypeDefinition
           for (const auto& def : type.def)
             if (def.spell) {
               if (auto ls_loc = GetLsLocationEx(db, working_files, *def.spell,
-                                                config->xref.container))
+                                                g_config->xref.container))
                 out.result.push_back(*ls_loc);
             }
           break;
diff --git a/src/messages/workspace_did_change_configuration.cc b/src/messages/workspace_did_change_configuration.cc
index c2ad85cb..8d81b892 100644
--- a/src/messages/workspace_did_change_configuration.cc
+++ b/src/messages/workspace_did_change_configuration.cc
@@ -28,13 +28,12 @@ struct Handler_WorkspaceDidChangeConfiguration
   MethodType GetMethodType() const override { return kMethodType; }
   void Run(In_WorkspaceDidChangeConfiguration* request) override {
     Timer time;
-    project->Load(config, config->projectRoot);
+    project->Load(g_config->projectRoot);
     time.ResetAndPrint("[perf] Loaded compilation entries (" +
                        std::to_string(project->entries.size()) + " files)");
 
     time.Reset();
-    project->Index(config, QueueManager::instance(), working_files,
-                   std::monostate());
+    project->Index(QueueManager::instance(), working_files, std::monostate());
     time.ResetAndPrint(
         "[perf] Dispatched workspace/didChangeConfiguration index requests");
 
diff --git a/src/messages/workspace_symbol.cc b/src/messages/workspace_symbol.cc
index 4294bd05..06140b50 100644
--- a/src/messages/workspace_symbol.cc
+++ b/src/messages/workspace_symbol.cc
@@ -77,8 +77,8 @@ struct Handler_WorkspaceSymbol : BaseMessageHandler<In_WorkspaceSymbol> {
     // db->detailed_names indices of each lsSymbolInformation in out.result
     std::vector<int> result_indices;
     std::vector<lsSymbolInformation> unsorted_results;
-    inserted_results.reserve(config->workspaceSymbol.maxNum);
-    result_indices.reserve(config->workspaceSymbol.maxNum);
+    inserted_results.reserve(g_config->workspaceSymbol.maxNum);
+    result_indices.reserve(g_config->workspaceSymbol.maxNum);
 
     // We use detailed_names without parameters for matching.
 
@@ -93,14 +93,14 @@ struct Handler_WorkspaceSymbol : BaseMessageHandler<In_WorkspaceSymbol> {
         if (InsertSymbolIntoResult(db, working_files, db->symbols[i],
                                    &unsorted_results)) {
           result_indices.push_back(i);
-          if (unsorted_results.size() >= config->workspaceSymbol.maxNum)
+          if (unsorted_results.size() >= g_config->workspaceSymbol.maxNum)
             break;
         }
       }
     }
 
     // Find subsequence matches.
-    if (unsorted_results.size() < config->workspaceSymbol.maxNum) {
+    if (unsorted_results.size() < g_config->workspaceSymbol.maxNum) {
       std::string query_without_space;
       query_without_space.reserve(query.size());
       for (char c : query)
@@ -118,14 +118,14 @@ struct Handler_WorkspaceSymbol : BaseMessageHandler<In_WorkspaceSymbol> {
           if (InsertSymbolIntoResult(db, working_files, db->symbols[i],
                                      &unsorted_results)) {
             result_indices.push_back(i);
-            if (unsorted_results.size() >= config->workspaceSymbol.maxNum)
+            if (unsorted_results.size() >= g_config->workspaceSymbol.maxNum)
               break;
           }
         }
       }
     }
 
-    if (config->workspaceSymbol.sort && query.size() <= FuzzyMatcher::kMaxPat) {
+    if (g_config->workspaceSymbol.sort && query.size() <= FuzzyMatcher::kMaxPat) {
       // Sort results with a fuzzy matching algorithm.
       int longest = 0;
       for (int i : result_indices)
diff --git a/src/project.cc b/src/project.cc
index 7357557d..9370c3ac 100644
--- a/src/project.cc
+++ b/src/project.cc
@@ -21,10 +21,7 @@
 #include <unistd.h>
 #endif
 
-#include <fstream>
-#include <iostream>
 #include <limits>
-#include <sstream>
 #include <unordered_set>
 #include <vector>
 
@@ -61,7 +58,7 @@ struct ProjectConfig {
 // of clang for the same platform are incompatible). Note that libclang always generate it's own pch
 // internally. For details, see https://github.com/Valloric/ycmd/issues/892 .
 std::vector<std::string> kBlacklistMulti = {
-    "-MF", "-MT", "-MQ", "-o", "--serialize-diagnostics", "-Xclang", "-include", "-include-pch"};
+    "-MF", "-MT", "-MQ", "-o", "--serialize-diagnostics", "-Xclang"};
 
 // Blacklisted flags which are always removed from the command line.
 std::vector<std::string> kBlacklist = {
@@ -106,7 +103,6 @@ LanguageId SourceFileLanguage(const std::string& path) {
 }
 
 Project::Entry GetCompilationEntryFromCompileCommandEntry(
-    Config* init_opts,
     ProjectConfig* config,
     const CompileCommandsEntry& entry) {
   Project::Entry result;
@@ -240,7 +236,7 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
   // Add -resource-dir so clang can correctly resolve system includes like
   // <cstddef>
   if (!AnyStartsWith(result.args, "-resource-dir"))
-    result.args.push_back("-resource-dir=" + init_opts->resourceDirectory);
+    result.args.push_back("-resource-dir=" + g_config->resourceDirectory);
 
   // There could be a clang version mismatch between what the project uses and
   // what ccls uses. Make sure we do not emit warnings for mismatched options.
@@ -249,7 +245,7 @@ Project::Entry GetCompilationEntryFromCompileCommandEntry(
 
   // Using -fparse-all-comments enables documentation in the indexer and in
   // code completion.
-  if (init_opts->index.comments > 1 &&
+  if (g_config->index.comments > 1 &&
       !AnyStartsWith(result.args, "-fparse-all-comments")) {
     result.args.push_back("-fparse-all-comments");
   }
@@ -269,8 +265,7 @@ std::vector<std::string> ReadCompilerArgumentsFromFile(
   return args;
 }
 
-std::vector<Project::Entry> LoadFromDirectoryListing(Config* init_opts,
-                                                     ProjectConfig* config) {
+std::vector<Project::Entry> LoadFromDirectoryListing(ProjectConfig* config) {
   std::vector<Project::Entry> result;
   config->mode = ProjectMode::DotCcls;
   LOG_IF_S(WARNING, !FileExists(config->project_dir + "/.ccls") &&
@@ -322,24 +317,22 @@ std::vector<Project::Entry> LoadFromDirectoryListing(Config* init_opts,
     if (e.args.empty())
       e.args.push_back("%clang");  // Add a Dummy.
     e.args.push_back(e.file);
-    result.push_back(
-        GetCompilationEntryFromCompileCommandEntry(init_opts, config, e));
+    result.push_back(GetCompilationEntryFromCompileCommandEntry(config, e));
   }
 
   return result;
 }
 
 std::vector<Project::Entry> LoadCompilationEntriesFromDirectory(
-    Config* config,
     ProjectConfig* project,
     const std::string& opt_compilation_db_dir) {
   // If there is a .ccls file always load using directory listing.
   if (FileExists(project->project_dir + ".ccls"))
-    return LoadFromDirectoryListing(config, project);
+    return LoadFromDirectoryListing(project);
 
   // If |compilationDatabaseCommand| is specified, execute it to get the compdb.
-  std::string comp_db_dir;
-  if (config->compilationDatabaseCommand.empty()) {
+  fs::path comp_db_dir;
+  if (g_config->compilationDatabaseCommand.empty()) {
     project->mode = ProjectMode::CompileCommandsJson;
     // Try to load compile_commands.json, but fallback to a project listing.
     comp_db_dir = opt_compilation_db_dir.empty() ? project->project_dir
@@ -356,32 +349,35 @@ std::vector<Project::Entry> LoadCompilationEntriesFromDirectory(
     rapidjson::StringBuffer input;
     rapidjson::Writer<rapidjson::StringBuffer> writer(input);
     JsonWriter json_writer(&writer);
-    Reflect(json_writer, *config);
+    Reflect(json_writer, *g_config);
     std::string contents = GetExternalCommandOutput(
-        std::vector<std::string>{config->compilationDatabaseCommand,
+        std::vector<std::string>{g_config->compilationDatabaseCommand,
                                  project->project_dir},
         input.GetString());
-    std::ofstream(comp_db_dir + "/compile_commands.json") << contents;
+    FILE* fout = fopen((comp_db_dir / "compile_commands.json").c_str(), "wb");
+    fwrite(contents.c_str(), contents.size(), 1, fout);
+    fclose(fout);
 #endif
   }
 
-  LOG_S(INFO) << "Trying to load compile_commands.json";
+  fs::path comp_db_path = comp_db_dir / "compile_commands.json";
+  LOG_S(INFO) << "Trying to load " << comp_db_path.string();
   CXCompilationDatabase_Error cx_db_load_error;
   CXCompilationDatabase cx_db = clang_CompilationDatabase_fromDirectory(
       comp_db_dir.c_str(), &cx_db_load_error);
-  if (!config->compilationDatabaseCommand.empty()) {
+  if (!g_config->compilationDatabaseCommand.empty()) {
 #ifdef _WIN32
   // TODO
 #else
-    unlink((comp_db_dir + "/compile_commands.json").c_str());
+    unlink(comp_db_path.c_str());
     rmdir(comp_db_dir.c_str());
 #endif
   }
 
   if (cx_db_load_error == CXCompilationDatabase_CanNotLoadDatabase) {
-    LOG_S(INFO) << "Unable to load compile_commands.json located at \""
-                << comp_db_dir << "\"; using directory listing instead.";
-    return LoadFromDirectoryListing(config, project);
+    LOG_S(INFO) << "Unable to load " << comp_db_path.string()
+                << "; using directory listing instead.";
+    return LoadFromDirectoryListing(project);
   }
 
   Timer clang_time;
@@ -421,7 +417,7 @@ std::vector<Project::Entry> LoadCompilationEntriesFromDirectory(
     entry.file = entry.ResolveIfRelative(relative_filename);
 
     result.push_back(
-        GetCompilationEntryFromCompileCommandEntry(config, project, entry));
+        GetCompilationEntryFromCompileCommandEntry(project, entry));
     our_time.Pause();
   }
 
@@ -452,13 +448,13 @@ int ComputeGuessScore(std::string_view a, std::string_view b) {
 
 }  // namespace
 
-void Project::Load(Config* config, const std::string& root_directory) {
+void Project::Load(const std::string& root_directory) {
   // Load data.
   ProjectConfig project;
-  project.extra_flags = config->extraClangArguments;
+  project.extra_flags = g_config->extraClangArguments;
   project.project_dir = root_directory;
   entries = LoadCompilationEntriesFromDirectory(
-      config, &project, config->compilationDatabaseDirectory);
+      &project, g_config->compilationDatabaseDirectory);
 
   // Cleanup / postprocess include directories.
   quote_include_directories.assign(project.quote_dirs.begin(),
@@ -539,28 +535,24 @@ Project::Entry Project::FindCompilationEntryForFile(
 }
 
 void Project::ForAllFilteredFiles(
-    Config* config,
     std::function<void(int i, const Entry& entry)> action) {
-  GroupMatch matcher(config->index.whitelist, config->index.blacklist);
+  GroupMatch matcher(g_config->index.whitelist, g_config->index.blacklist);
   for (int i = 0; i < entries.size(); ++i) {
     const Project::Entry& entry = entries[i];
     std::string failure_reason;
     if (matcher.IsMatch(entry.filename, &failure_reason))
       action(i, entries[i]);
-    else {
-      if (config->index.logSkippedPaths) {
-        LOG_S(INFO) << "[" << i + 1 << "/" << entries.size() << "]: Failed "
-                    << failure_reason << "; skipping " << entry.filename;
-      }
+    else if (g_config->index.logSkippedPaths) {
+      LOG_S(INFO) << "[" << i + 1 << "/" << entries.size() << "]: Failed "
+                  << failure_reason << "; skipping " << entry.filename;
     }
   }
 }
 
-void Project::Index(Config* config,
-                    QueueManager* queue,
+void Project::Index(QueueManager* queue,
                     WorkingFiles* wfiles,
                     lsRequestId id) {
-  ForAllFilteredFiles(config, [&](int i, const Project::Entry& entry) {
+  ForAllFilteredFiles([&](int i, const Project::Entry& entry) {
     std::optional<std::string> content = ReadContent(entry.filename);
     if (!content) {
       LOG_S(ERROR) << "When loading project, canont read file "
@@ -578,30 +570,22 @@ TEST_SUITE("Project") {
   void CheckFlags(const std::string& directory, const std::string& file,
                   std::vector<std::string> raw,
                   std::vector<std::string> expected) {
-    Config config;
+    g_config = std::make_unique<Config>();
+    g_config->resourceDirectory = "/w/resource_dir/";
     ProjectConfig project;
     project.project_dir = "/w/c/s/";
-    config.resourceDirectory = "/w/resource_dir/";
 
     CompileCommandsEntry entry;
     entry.directory = directory;
     entry.args = raw;
     entry.file = file;
     Project::Entry result =
-        GetCompilationEntryFromCompileCommandEntry(&config, &project, entry);
+        GetCompilationEntryFromCompileCommandEntry(&project, entry);
 
     if (result.args != expected) {
-      std::cout << "Raw:      " << StringJoin(raw) << std::endl;
-      std::cout << "Expected: " << StringJoin(expected) << std::endl;
-      std::cout << "Actual:   " << StringJoin(result.args) << std::endl;
-    }
-    for (int i = 0; i < std::min(result.args.size(), expected.size()); ++i) {
-      if (result.args[i] != expected[i]) {
-        std::cout << std::endl;
-        std::cout << "mismatch at " << i << std::endl;
-        std::cout << "  expected: " << expected[i] << std::endl;
-        std::cout << "  actual:   " << result.args[i] << std::endl;
-      }
+      fprintf(stderr, "Raw:      %s\n", StringJoin(raw).c_str());
+      fprintf(stderr, "Expected: %s\n", StringJoin(expected).c_str());
+      fprintf(stderr, "Actual:   %s\n", StringJoin(result.args).c_str());
     }
     REQUIRE(result.args == expected);
   }
@@ -671,7 +655,7 @@ TEST_SUITE("Project") {
   }
 
   TEST_CASE("Directory extraction") {
-    Config init_opts;
+    g_config = std::make_unique<Config>();
     ProjectConfig config;
     config.project_dir = "/w/c/s/";
 
@@ -701,7 +685,7 @@ TEST_SUITE("Project") {
                   "foo.cc"};
     entry.file = "foo.cc";
     Project::Entry result =
-        GetCompilationEntryFromCompileCommandEntry(&init_opts, &config, entry);
+        GetCompilationEntryFromCompileCommandEntry(&config, entry);
 
     std::unordered_set<std::string> angle_expected{
         "/a_absolute1", "/a_absolute2", "/base/a_relative1",
diff --git a/src/project.h b/src/project.h
index 71fbd19a..d67562ab 100644
--- a/src/project.h
+++ b/src/project.h
@@ -40,7 +40,7 @@ struct Project {
   // will affect flags in their subtrees (relative paths are relative to the
   // project root, not subdirectories). For compile_commands.json, its entries
   // are indexed.
-  void Load(Config* config, const std::string& root_directory);
+  void Load(const std::string& root_directory);
 
   // Lookup the CompilationEntry for |filename|. If no entry was found this
   // will infer one based on existing project structure.
@@ -55,11 +55,7 @@ struct Project {
 
   // Run |action| on every file in the project.
   void ForAllFilteredFiles(
-      Config* config,
       std::function<void(int i, const Entry& entry)> action);
 
-  void Index(Config* config,
-             QueueManager* queue,
-             WorkingFiles* wfiles,
-             lsRequestId id);
+  void Index(QueueManager* queue, WorkingFiles* wfiles, lsRequestId id);
 };
diff --git a/src/query_utils.cc b/src/query_utils.cc
index 72e756c1..e30b6d43 100644
--- a/src/query_utils.cc
+++ b/src/query_utils.cc
@@ -251,17 +251,16 @@ std::optional<lsLocationEx> GetLsLocationEx(QueryDatabase* db,
 
 std::vector<lsLocationEx> GetLsLocationExs(QueryDatabase* db,
                                            WorkingFiles* working_files,
-                                           const std::vector<Use>& uses,
-                                           bool container,
-                                           int limit) {
+                                           const std::vector<Use>& uses) {
   std::vector<lsLocationEx> ret;
   for (Use use : uses)
-    if (auto loc = GetLsLocationEx(db, working_files, use, container))
+    if (auto loc =
+            GetLsLocationEx(db, working_files, use, g_config->xref.container))
       ret.push_back(*loc);
   std::sort(ret.begin(), ret.end());
   ret.erase(std::unique(ret.begin(), ret.end()), ret.end());
-  if (ret.size() > limit)
-    ret.resize(limit);
+  if (ret.size() > g_config->xref.maxNum)
+    ret.resize(g_config->xref.maxNum);
   return ret;
 }
 
diff --git a/src/query_utils.h b/src/query_utils.h
index a3bd30df..0365394a 100644
--- a/src/query_utils.h
+++ b/src/query_utils.h
@@ -41,9 +41,7 @@ std::optional<lsLocationEx> GetLsLocationEx(QueryDatabase* db,
                                        bool container);
 std::vector<lsLocationEx> GetLsLocationExs(QueryDatabase* db,
                                            WorkingFiles* working_files,
-                                           const std::vector<Use>& refs,
-                                           bool container,
-                                           int limit);
+                                           const std::vector<Use>& refs);
 // Returns a symbol. The symbol will have *NOT* have a location assigned.
 std::optional<lsSymbolInformation> GetSymbolInfo(QueryDatabase* db,
                                             WorkingFiles* working_files,
diff --git a/src/test.cc b/src/test.cc
index 07d083bc..7ba6b89e 100644
--- a/src/test.cc
+++ b/src/test.cc
@@ -262,11 +262,11 @@ bool RunIndexTests(const std::string& filter_path, bool enable_update) {
     flags.push_back(path);
 
     // Run test.
-    Config config;
+    g_config = std::make_unique<Config>();
     FileConsumerSharedState file_consumer_shared;
     PerformanceImportFile perf;
-    auto dbs = Parse(&config, &file_consumer_shared, path, flags, {}, &perf,
-                     &index, false /*dump_ast*/);
+    auto dbs = Parse(&file_consumer_shared, path, flags, {}, &perf, &index,
+                     false /*dump_ast*/);
 
     for (const auto& entry : all_expected_output) {
       const std::string& expected_path = entry.first;