If GNU readline is used, it would be nice to add --use-history-file to the configure flags to get a gnuplot with a persitent history file. Reproducible: Always Steps to Reproduce: 1. 2. 3.
Will be like that from 4.0.0 on which is just coming to portage. Thanks for the hint.
Whoops, didn't make it into portage yet - I luckily forgot to commit the change since this one is maintained by g2boojum - re-assigning and re-opening this bug.
Added to CVS (w/ some minor changes--absence of a USE flag means the option should be disabled). Thanks!