[bitwize]

The developer of xterm actually maintains a battery of tests which exercise corner cases in the DEC VT protocol and ensure that xterm conforms in the manner that a real terminal would: https://invisible-island.net/vttest/vttest.html

Xterm really is a terminal emulator. Most other "modern" TEs are more like shitty xterm emulators.

[mhd]

Thomas Dickey is one of the unsung heroes of the open source movement, despite his double-wrong taste in editors ;)