Issue #5061

Issue #5054

See https://github.com/codemirror/CodeMirror/commit/79d266e60a8d02a865c7cf9340628a0f5d920394#commitcomment-25055107

That overlay modes can use to access the underlying token info.

Since it produces orderings that don't correspond to what
the browser does then.

To take document direction into account

Closes #4878.

Issue #4926

Closes #4975. Checking `hasFocus` is a reasonable idea, but in Firefox
`hasFocus` returns false on `mousedown` if the window, but not the document
was focussed before. This leads to a wrong cursor in `contenteditable`
input style.

To avoid unpredictable selection behavior depending on whether the
mouse drag started a pixel to the left or right of the boundary.

Issue #4926

Issue #4926

Issue #4926

As @afercia points out, this use of aria-label makes no sense.

Issue #4958

This reverts commit bde68f12.

Issue #4958

Issue #4926

Issue #4889

Modern browsers handle updates to a textarea's value fast enough
to not do this anymore.

Issue #2703

Closes #4840