GitHub code folding

A userscript that adds code folding to GitHub files

• This code only works on GitHub files (with line numbers), not in markdown code.
• Works for both space and tab indentation.
• This code was modified from the GitHub Code Folding Chrome extension by @noam3127 (MIT license).
• Clicking on an arrow will collapse a section of code with the same indentation level.
• Using Shift click on an arrow will collapse all sections of the same code indentation level.
• After collapsing a code block, click on either the arrow (left side) or on the ellipsis (right side), to re-expand the code block.
• Click this link to install from GitHub; or, install from GreasyFork or OpenUserJS.

Screenshot

Change Log

Version 1.1.4 (2021-07-21)

• Update mutation script.
• Update utils script.

Version 1.1.3 (2021-04-01)

• Insert triangles before other nodes. See PR #142; thanks @murphyne!
• Code cleanup

Version 1.1.2 (2021-01-31)

• Update mutation script.

Version 1.1.1 (2020-05-12)

• Improve arrow transition. See PR #111; thanks @yuezk!
• Reduce arrow container width.

Version 1.1.0 (2019-06-07)

• Updated selectors to match new GitHub class names.
• Added support for gists.
• General code cleanup.

Version 1.0.18 (2019-02-16)

• Update GitHub icon.

Version 1.0.17 (2019-01-28)

• Update mutation script.

Version 1.0.16 (2018-10-05)

• Update mutation script.

Version 1.0.15 (2018-05-28)

• Make github-code-folding.user.js work on mobile layout. See PR #47; thanks @zb3!
• Reformat & version bump.

Version 1.0.14 (2018-05-17)

• Update mutation script.

Version 1.0.13 (2018-05-10)

• Update mutation script.

Version 1.0.12 (2018-04-09)

• Update mutation script url.

Version 1.0.11 (2018-02-27)

• Fix arrow position.

Version 1.0.10 (2018-01-30)

• Update GM4 polyfill.

Version 1.0.9 (2017-12-14)

• Add GM4 polyfill & update assets.

Version 1.0.8 (2017-10-08)

• Remove incorrect code padding.

Version 1.0.7 (2017-10-08)

• Update mutation script url.

Version 1.0.6 (2017-09-02)

• Position ellipsis above code guides.
• Append collapse arrow (prevent interference with whitespace userscript).

Version 1.0.5 (2017-05-16)

• Change license to MIT.

Version 1.0.4 (2017-04-21)

• Update mutation url.

Version 1.0.1 - 1.0.3 (2017-04-13)

• Switch to using mutations.js.

Version 1.0.0 (2017-03-25)

• Use pjax event & fix linting.

Version 0.1.1 (2017-01-11)

• Clean up "closest" function.
• Use classList toggle.

Version 0.1.0 (2016-12-28)

• Initial commit