Enable logging to file by default.

doc/man/wesnoth.6

@@ -190,8 +190,8 @@ lists defined log domains (only the ones containing
 .I filter
 if used) and exits
 .TP
-.B --log-to-file
-redirects logged output to a file. Log files are created in the logs directory under the userdata folder.
+.B --no-log-to-file
+prevents redirecting logged output to a file. Log files are created in the logs directory under the userdata folder.
 .TP
 .BI --max-fps \ fps
 the number of frames per second the game can show, the value should be between

src/commandline_options.cpp

@@ -261,7 +261,7 @@ commandline_options::commandline_options(const std::vector<std::string>& args)
 		("log-debug", po::value<std::string>(), "sets the severity level of the specified log domain(s) to 'debug'. Similar to --log-error.")
 		("log-none", po::value<std::string>(), "sets the severity level of the specified log domain(s) to 'none'. Similar to --log-error.")
 		("log-precise", "shows the timestamps in log output with more precision.")
-		("log-to-file", "log output is written to a file rather than to standard error.")
+		("no-log-to-file", "log output is written to standard error rather than to a file.")
 		;
 
 	po::options_description multiplayer_opts("Multiplayer options");

src/wesnoth.cpp

@@ -1029,17 +1029,21 @@ int main(int argc, char** argv)
 	// --nobanner needs to be detected before the main command-line parsing happens
 	// --log-to needs to be detected so the logging output location is set before any actual logging happens
 	bool nobanner = false;
+	bool log_to_file = true;
 	for(const auto& arg : args) {
 		if(arg == "--nobanner") {
 			nobanner = true;
 			break;
 		}
-#ifndef _WIN32
-		else if(arg == "--log-to-file") {
-			lg::set_log_to_file();
+		else if(arg == "--no-log-to-file") {
+			log_to_file = false;
 		}
-#endif
 	}
+#ifndef _WIN32
+	if(log_to_file) {
+		lg::set_log_to_file();
+	}
+#endif
 
 #ifdef _WIN32
 	bool log_redirect = true, native_console_implied = false;

utils/dockerbuilds/steamrt/start.sh

@@ -1,4 +1,4 @@
 #!/bin/sh
 gamedir=${0%/*}
 cd "$gamedir" || exit
-exec ./wesnoth --log-to-file "$@"
+exec ./wesnoth "$@"