logic: Index multiple indexer commands for one source file in CDB source group (issue #717)

src/lib_cxx/data/indexer/CxxIndexerCommandProvider.cpp

@@ -102,7 +102,7 @@ void CxxIndexerCommandProvider::addCommand(const std::shared_ptr<IndexerCommandC
 		}
 	}
 
-	m_commands[command->getSourceFilePath()] = representation;
+	m_commands.emplace(command->getSourceFilePath(), representation);
 }
 
 std::vector<FilePath> CxxIndexerCommandProvider::getAllSourceFilePaths() const

src/lib_cxx/data/indexer/CxxIndexerCommandProvider.h

@@ -39,7 +39,7 @@ private:
 
 	Id m_nextId;
 
-	std::map<FilePath, std::shared_ptr<CommandRepresentation>> m_commands;
+	std::multimap<FilePath, std::shared_ptr<CommandRepresentation>> m_commands;
 
 	std::map<Id, FilePath> m_idsToIndexedPaths;
 	std::map<FilePath, Id> m_indexedPathsToIds;