warning-minimum-log-level

warning-minimum-log-level is a variable defined in `warnings.el'.
Its value is

:warning

Documentation:
Minimum severity level for logging a warning.
If a warning severity level is lower than this,
the warning is completely ignored.
Value must be lower or equal than `warning-minimum-level',
because warnings not logged aren't displayed either.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 22.1 of Emacs.