fmt: add support for off
filter directives
#72
Merged
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Motivation
The
env_logger
crate allows log directives ending inoff
todisable all logging from a matching target. However,
tokio-trace-fmt
'sEnvFilter
does not.For example:
env_logger
accepts these directives.Solution
This branch adds support for directives with
off
. It was necessary toreimplement a
LevelFilter
type, here similar to the one intokio-trace
, astokio-trace-fmt
only depends ontokio-trace-core
.Fixes: #68
Signed-off-by: Eliza Weisman [email protected]