q

Mostly WYSIWYG command-line driven editor with editable commands, a powerful macro facility including a stack architecture run machine, macro debugger, online help, a foundation macro set and extension macro sets for C, python, Ada and Tcl development and email composition.
Q tries to resolve the old tabs vs spaces conundrum: e.g. in Linux source, the user can automatically enforce leading tabs, no space-before-tab leading sequences and no trailing spaces.