from log.c:241
static const struct command_registration log_command_handlers[] = {
{
.name = "log_output",
.handler = handle_log_output_command,
.mode = COMMAND_ANY,
.help = "redirect logging to a file (default: stderr)",
.usage = "[file_name | 'default']",
},
{
.name = "debug_level",
.handler = handle_debug_level_command,
.mode = COMMAND_ANY,
.help = "Sets the verbosity level of debugging output. "
"0 shows errors only; 1 adds warnings; "
"2 (default) adds other info; 3 adds debugging; "
"4 adds extra verbose debugging.",
.usage = "number",
},
COMMAND_REGISTRATION_DONE
};