erc-track-priority-faces-only

erc-track-priority-faces-only is a variable defined in `erc-track.el'.
Its value is

nil

Documentation:
Only track text highlighted with a priority face.
If you would like to ignore changes in certain channels where there
are no faces corresponding to your `erc-track-faces-priority-list', set
this variable. You can set a list of channel name strings, so those
will be ignored while all other channels will be tracked as normal.
Other options are 'all, to apply this to all channels or nil, to disable
this feature.

Note: If you have a lot of faces listed in `erc-track-faces-priority-list',
setting this variable might not be very useful.

You can customize this variable.