In Emacs - is there a way I can search an extended command by regex right in the minibuffer? That is - I want to filter commands by regexp and then choose the one I need using IDO or Icicles.
I've always suspected that Icicles
provdies that.
M-x <command-regexp> [PageUp/PageDown]
to browse the commands mathching regexp, and
M-x <command-regexp> [Shift-Tab]
to see the list of commands matching regexp. More here.