printerr

Outputs a formatted message via the error message handler.

The default handler outputs the encoded message to stderr, without appending a trailing new-line character. Typically, format should end with its own new-line character.

printerr should not be used from within libraries. Instead log or log_structured should be used, or the convenience macros message, warning and error.

Parameters:

format	the message format. See the printf documentation
...	the parameters to insert into the format string