use std::function signature in argument?

include/jlog/jlog.hpp

@@ -76,7 +76,7 @@ namespace jlog
     /// These are helper functions designed to be wrapped around for easier custom logger building.
     /// @note This file is implemented differently per-platform to handle differences in console color handling.
     /// @see windows/jlog.cpp linux/jlog.cpp
-    std::string toks2msg(std::vector<token> tokens, std::string (*formatter)(token));
+    std::string toks2msg(std::vector<token> tokens, std::function<std::string(token)> formatter);
     std::string consoleMsgFormatter(token t);
     std::string logfileMsgFormatter(token t);
     std::string toks2consoleMsg(std::vector<token> tokens);

src/jlog/shared/jlog.cpp

@@ -55,7 +55,7 @@ namespace jlog
         stream << message;
     }
 
-    std::string toks2msg(std::vector<token> tokens, std::string (*formatter)(token))
+    std::string toks2msg(std::vector<token> tokens, std::function<std::string(token)> formatter)
     {
         std::string msg;
         for (token t: tokens)