Enable file logging by default on desktops to help with troubleshooting

- Use the `.log` file extension (recognized on Windows out of the box)
  to better hint that generated files are logs. Some editors provide
  dedicated syntax highlighting for those files.
- Use an underscore to separate the basename from the date and
  the date from the time in log filenames. This makes the filename
  easier to read.
- Keep only 5 log files by default to decrease disk usage in case
  messages are spammed.

1 files changed, 7 insertions, 2 deletions

diff --git a/main/main.cpp b/main/main.cpp
index 608b4a7c4d..f78990c590 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -954,8 +954,13 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
 #endif
 
 	GLOBAL_DEF("logging/file_logging/enable_file_logging", false);
-	GLOBAL_DEF("logging/file_logging/log_path", "user://logs/log.txt");
-	GLOBAL_DEF("logging/file_logging/max_log_files", 10);
+	// Only file logging by default on desktop platforms as logs can't be
+	// accessed easily on mobile/Web platforms (if at all).
+	// This also prevents logs from being created for the editor instance, as feature tags
+	// are disabled while in the editor (even if they should logically apply).
+	GLOBAL_DEF("logging/file_logging/enable_file_logging.pc", true);
+	GLOBAL_DEF("logging/file_logging/log_path", "user://logs/godot.log");
+	GLOBAL_DEF("logging/file_logging/max_log_files", 5);
 	ProjectSettings::get_singleton()->set_custom_property_info("logging/file_logging/max_log_files", PropertyInfo(Variant::INT, "logging/file_logging/max_log_files", PROPERTY_HINT_RANGE, "0,20,1,or_greater")); //no negative numbers
 	if (FileAccess::get_create_func(FileAccess::ACCESS_USERDATA) && GLOBAL_GET("logging/file_logging/enable_file_logging")) {
 		String base_path = GLOBAL_GET("logging/file_logging/log_path");