Re: tricky - undo function - planning info

[Stefan Monnier]

> Normally M-x undo would undo each step. A function may comprise one or more
> steps.

Emacs doesn't care much about function boundaries.  So, if you really
mean "function", your needs are clearly out.  If you actually meant
"command", then at least there's a chance you might get it to do what
you want.
Still, a command may stop in the middle, calling recusrive-edit and
hence calling other sub-commands, at which point it can become far from
clear what you mean by "undo 1 command".

> Then again, maybe it is already implemented and undocumented, or there
> is a simple solution.

I doubt it.  Maybe all you want is atomic-change-group.  But Maybe your
needs are very unusual.  If you describe them, maybe someone can show you
how to do it.


        Stefan