https://github.com/misohena/phscroll

Enable partial horizontal scroll in Emacs
https://github.com/misohena/phscroll

emacs emacs-lisp org-mode

Last synced: about 2 months ago
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Enable partial horizontal scroll in Emacs

• Host: GitHub
• URL: https://github.com/misohena/phscroll
• Owner: misohena
• Created: 2020-06-02T13:11:23.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2023-10-12T05:05:45.000Z (over 1 year ago)
• Last Synced: 2023-10-12T21:06:43.243Z (over 1 year ago)
• Topics: emacs, emacs-lisp, org-mode
• Language: Emacs Lisp
• Homepage: https://misohena.jp/blog/2020-06-02-partial-horizontal-scroll-in-emacs.html
• Size: 242 KB
• Stars: 81
• Watchers: 9
• Forks: 3
• Open Issues: 2
• Metadata Files:
  • Readme: README.org

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README

        
#+TITLE: Partial Horizontal Scroll in Emacs

* About

This elisp enables horizontal scrolling in specified parts of buffer even in line-wrapping mode (truncate-lines is nil).

[[file:./phscroll-screenshot.gif]]

* Usage

1. Load phscroll.el (require 'phscroll)

2. Select a region you want to horizontal scroll

3. M-x phscroll-region

Other commands:

- M-x phscroll-delete-all : Delete all scrolling area in the current buffer

- M-x phscroll-delete-at : Delete a scrolling area at point

- M-x phscroll-update-at : Update (redraw) a scrolling area at point

The following keys are available in scrolling area:

- C-x < (M-x phscroll-scroll-left)

- C-x > (M-x phscroll-scroll-right)

- C-l (M-x phscroll-recenter-top-bottom)

- C-S-l (M-x phscroll-recenter-left-right)

* In org-mode

The following elisp enables horizontal scrolling in table parts of org-mode documents. By setting org-startup-truncated to nil, other parts will be displayed in wrapping.

#+begin_src emacs-lisp

(setq org-startup-truncated nil)

(with-eval-after-load "org"

  (require 'org-phscroll))

#+end_src

Tips:

- To turn off the effect of phscroll, use M-x org-phscroll-mode.

- To scroll the current position of the screen to the left edge, press C-S-l twice.

* Known Issues

- Incorrect display when viewing the same area from multiple windows with different widths

- Incorrect display when used with various text properties and overlays.

- Performance degradation

phscroll forcibly realizes partial horizontal scrolling, which is not possible originally. It's interesting that it's still somewhat usable, but ideally Emacs should have a text property that controls line wrapping.