The mathomatic interactive prompt can be built with readline support (and the ebuild looks like it should be using readline support) but it is not working. Reproducible: Always Steps to Reproduce: 1. emerge mathomatic 2. mathomatic 3. type a command 4. press up-arrow Actual Results: mathomatic builds and installs fine, but there is no command history. Expected Results: Previously typed commands should be available by pressing up-arrow.
Thanks for reporting. This is now fixed in 12.4.11-r1.