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-# nng_log_logger
-
-## NAME
-
-nng_log_logger --- logging handler
-
-## SYNOPSIS
-
-```c
-#include <nng/nng.h>
-
-typedef void (*nng_logger)(nng_log_level level, nng_log_facility facility,
- const char *msgid, const char *msg);
-
-void nng_null_logger(nng_log_level, nng_log_facility, const char *, const char *);
-void nng_stderr_logger(nng_log_level, nng_log_facility, const char *, const char *);
-void nng_system_logger(nng_log_level, nng_log_facility, const char *, const char *);
-
-void nng_log_set_logger(nng_logger logger);
-```
-
-## DESCRIPTION
-
-An {{i:`nng_logger`}}{{hi:logger}} is a function used as a handler to process logged messages.
-This is responsible for the final disposition of the logged messages.
-
-The {{i:`nng_log_set_logger`}} function is used to set the base logging function to _logger_.
-The _logger_ may be a user defined function to process log messages.
-Only a single logger may be registered at a time.
-If needed, the logger should make copies of either _msgid_ or _msg_, as they will not be valid after the logger returns.
-
-The {{i:`nng_null_logger`}} function is an implementation of `nng_logger` that simply discards the content.
-This is the default logger, so logging is disabled by default.
-
-The {{i:`nng_stderr_logger`}} function is an implementation that logs messages to the standard error stream.
-It will attempt to colorize messages by the severity, if the standard error is a terminal device.
-This can be supressed by setting either the `NO_COLOR` or `NNG_LOG_NO_COLOR` environment variables.
-
-The {{i:`nng_system_logger`}} attempts to use an appropriate system facility to log messages.
-For POSIX systems, this means using `syslog` to process the messages.
-For other systems the defauilt behavior may be the same as `nng_stderr_logger`.
-
-## SEE ALSO
-
-[nng_log](./nng_log.md),
-[nng_log_facility](./nng_log_facility.md),
-[nng_log_level](./nng_log_level.md)