Update README.md

README.md

@@ -379,20 +379,14 @@ $ ./example
 ```c++
 // You can get subscribe to get callbacks from spdlog before/after log file has been opened or closed. 
 // This is useful for cleanup procedures or for adding someting the start/end of the log files.
-void file_events_example(){    
+void file_events_example()
+{
+    // pass the spdlog::file_event_handlers_t to file sinks for open/close log file notifications
     spdlog::file_event_handlers_t handlers;
-    handlers.before_open = [](spdlog::filename_t filename) {
-        spdlog::info("Before opening {}", filename);
-    };
-    handlers.after_open = [](spdlog::filename_t filename, std::FILE *fstream) {        
-        fputs("After opening\n", fstream);                
-    };
-    handlers.before_close = [](spdlog::filename_t filename, std::FILE *fstream) {        
-        fputs("Before closing\n", fstream);                
-    };
-    handlers.after_close = [](spdlog::filename_t filename) {
-        spdlog::info("After closing {}", filename);
-    };        
+    handlers.before_open = [](spdlog::filename_t filename) { spdlog::info("Before opening {}", filename); };
+    handlers.after_open = [](spdlog::filename_t filename, std::FILE *fstream) { fputs("After opening\n", fstream); };
+    handlers.before_close = [](spdlog::filename_t filename, std::FILE *fstream) { fputs("Before closing\n", fstream); };
+    handlers.after_close = [](spdlog::filename_t filename) { spdlog::info("After closing {}", filename); };
     auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/events-sample.txt", true, handlers);
     spdlog::logger my_logger("some_logger", file_sink);
     // or