Some features don't work on branches with slashes

Any feature that makes use of pathnameParts[4] or getReference don’t support branch names that contain /.

The problem with extracting the branch from the URL is that branch/folder/folder/folder is indistinguishable from branch/still/branch/folder, so the branch cannot be safely determined from the URL.

fix-view-file-link-in-pr and link-to-file-in-file-history both have solutions for it, but I think they’re not easily copy-able.

For example getReference could be changed to:

// Tested on the Code tab
return select('#branch-select-menu summary .css-truncate-target').textContent

Originally discussed in https://github.com/sindresorhus/refined-github/pull/2998#issuecomment-613125320 cc @yakov116

[yakov116]

@fregante we are doing a select.last. That will give you .atom

[fregante]

Can you also add every route where getReference is expected to work? e.g.

/** Should work on isCommitList, isSingleFile, blah blah */
function getCurrentBranch() {……..}