ogre.hx

Restores the original group-wise rotation of selection contents for the Helix editor⁠.

Helix #13985⁠ changed the count on rotate_selection_contents_forward, rotate_selection_contents_backward and reverse_selection_contents from a group size to a repetition count. These commands restore the old behaviour, while retaining the new selection-follows-content behaviour.

Commands

Command	Effect
:rotate-selection-contents-forward	Rotate the contents of each group of selections right
:rotate-selection-contents-backward	Rotate the contents of each group of selections left
:reverse-selection-contents	Reverse the contents of each group of selections

Hyphenated so that these sit alongside the built-in underscored commands rather than replacing them, in case you still want the repetition count.

Worked example

Inverting a dictionary, the case from helix-golf⁠. Two selections per line over four lines, {a} the primary:

{one}: 1         1 : {one}
 two : 2         2 : two
three: 3   ->    3 : three
 four: 4         4 : four

2 then A-): each pair swaps in place. Without the count you would instead get one long cycle through all eight fragments.

Installation

Install with forge⁠, Steel’s package manager:

forge pkg install --git https://github.com/waddie/ogre.hx

Then load the plugin in your init.scm:

(require "ogre.hx/ogre.scm")

Key bindings

Taking over the default bindings.

(keymap (global)
  (normal
    ("A-)" ":rotate-selection-contents-forward")
    ("A-(" ":rotate-selection-contents-backward"))
  (select
    ("A-)" ":rotate-selection-contents-forward")
    ("A-(" ":rotate-selection-contents-backward")))

:reverse-selection-contents has no default binding.

Tests

The permutation arithmetic is pure and runs headless:

sh tests/run-all.sh

Licence

AGPL-3.0-or-later. See LICENSE⁠.