Jump tree

jump-tree is an undo-tree like jumping implementation, so that we can jump back and forth in a tree way like undo-tree. It's inspired by and a combination of undo-tree and jumplist.

Installation

You can install from melpa ,or

You can install manually from github:

git clone https://github.com/yangwen0228/jump-tree.git

Then add this to your init:

(require 'jump-tree)

Usage

Just call M-x global-jump-tree-mode and then use M-, to jump previous, M-. to jump next and C-x j to view the jump tree visualizer.

Support several kinds of skipping methods. The priority is higher than that of recording:

1. skip command in jump-tree-pos-list-skip-commands.
2. skip when buffer in jump-tree-pos-list-skip-buffers.
3. skip the commands whose prefix is "jump-tree".

Support several kinds of recording methods. The priorities are:

1. record when command in jump-tree-pos-list-record-commands.
2. record when offset exceeding threshold.
3. record when switch-buffer.

The default jump-tree-pos-list-skip-commands value is as follows:

'(self-insert-command)

The default jump-tree-pos-list-skip-buffers value is as follows(this may be changed to use regexp in the future.):

'(*Messages*)'

The record of the jump node is decided by the jump-tree-pos-list-record-commands variable. The default value is as follows:

'(beginning-of-buffer
  end-of-buffer backward-up-list
  beginning-of-defun end-of-defun
  unimacs-move-beginning-of-line unimacs-move-end-of-line
  unimacs-move-beginning-of-window unimacs-move-end-of-window
  helm-swoop helm-imenu helm-find-files helm-multi-files
  helm-projectile-switch-project helm-projectile-find-file
  helm-gtags-find-pattern helm-gtags-find-tag-adapter
  helm-gtags-find-rtag-adapter helm-ag-select-directory
  find-function find-variable
  mark-defun mark-whole-buffer
  avy-goto-char avy-goto-char-2
  ensime-edit-definition
  ensime-edit-definition-with-fallback
  isearch-forward)

We can support the record the position, when the movement or offset is exceeding the threshold. The default threshold points jump-tree-pos-list-offset-threshold is:

200

Besides, we support to record the position when switch to another buffer or file. Whether this feature is enabled is determined by jump-tree-pos-list-switch-buffer. The default value is enabled:

t

Thanks to

Toby Cubitt's undo-tree

ganmacs's jumplist

Todo

• [ ] When the records' buffers get closed, the position markers become invalid, now just ignore the positions. Clear the records? Or use a file to save the last point states, and restore the states?
• [x] Support jump to prev/next buffers directly.
• [ ] Support jump only in current buffer.
• [ ] Rebuild a tree contains only buffers' last position in visualizer, jump to prev/next buffers directly.
• [ ] Rebuild a tree contains positions only in current buffer in visualizer, jump only in current buffer.
• [x] Last position is sometimes not reachable.