For example, using
' %?[1y?%\?[1d\?%[%H:%M]\&%[%m/%d]\?&%[%y.%m]?'
for the date in the index format will produce a display like:
1 F 97.12 To mutt-users@c ( 40) Re: rfc934 compliance 2 F 10/02 To Mutt Develop ( 15) Re: tiny mkstemp patch 3 L 12:17 Michael Elkins ( 16) Re: Replying with the appropriate address
The other part of this variable is moved to $see_old. Also, with this patch changing the value of $see_old takes effect immediately, not only when changing folders.