erc-track-shorten-aggressively

erc-track-shorten-aggressively is a variable defined in `erc-track.el'.
Its value is

nil

Documentation:
If non-nil, channel names will be shortened more aggressively.
Usually, names are not shortened if this will save only one character.
Example: If there are two channels, #linux-de and #linux-fr, then
normally these will not be shortened. When shortening aggressively,
however, these will be shortened to #linux-d and #linux-f.

If this variable is set to `max', then channel names will be shortened
to the max. Usually, shortened channel names will remain unique for a
given set of existing channels. When shortening to the max, the shortened
channel names will be unique for the set of active channels only.
Example: If there are two active channels #emacs and #vi, and two inactive
channels #electronica and #folk, then usually the active channels are
shortened to #em and #v. When shortening to the max, however, #emacs is
not compared to #electronica -- only to #vi, therefore it can be shortened
even more and the result is #e and #v.

This setting is used by `erc-track-shorten-names'.

You can customize this variable.