#+title: evil-leap
#+author: Madeleine Sydney

Evil's answer to Neovim's answer to the mouse

* Tasks

** TODO Equivalence classes

** TODO Many targets w/ [[kbd:][SPC]] and [[kbd:][DEL]] labels

** TODO Match newlines with [[kbd:][SPC SPC]]

** DONE Passthrough input on fail
CLOSED: [2024-11-23 Sat 09:07]

** DONE Leap backwards
CLOSED: [2024-11-24 Sun 08:55]

** TODO Leap from window

** TODO Only leap to visible targets

Currently, we take care to only search from the point to the beg/end of the window, but we don't account for concealed text, e.g. folded org subtrees.

~evil-snipe~ achieves this by, in their search function, checking if the target is invisible, and skipping the match, if so.

#+begin_src elisp
(defun evil-snipe--seek-re (data scope count)
  (let ((regex (mapconcat #'cdr data ""))
        result)
    (when (and evil-snipe-skip-leading-whitespace
               (looking-at-p "[ \t]+")
               (string-match-p "^[ \t]+" (mapconcat #'car data "")))
      (setq regex (concat regex "[^ \t]")))
    (when (setq result (re-search-forward regex scope t count))
      ; ↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
      (if (or (invisible-p (match-beginning 0))  ; ←
              (invisible-p (1- (match-end 0))))  ; ←
          (evil-snipe--seek-re data scope count) ; ←
      ; ↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
        result))))
#+end_src

** TODO Avoid leaping to target directly under point

Currently, if the point is on ~a~, that very ~ab~ pair will be given as a potential target.

#+begin_src
↓
ab
#+end_src

** TODO Leap any direction

** TODO Cleanup w/ ~pre-command-hook~

** TODO Extract equivalence classes from =char-fold-table=

** TODO Documentation

*** TODO Clarify terminology

- "Auto-jump" really means "call ~evil-leap-action~ automatically."
- "Jump to target" really means "call ~evil-leap-action~ on target."

*** TODO Comparison with =evil-snipe=

*** TODO Comparison with ~leap.nvim~

** TODO Correctly use =count= prefix argument

** TODO Support input methods

[[https://github.com/emacs-evil/evil/issues/5][Weird.]]