marijnh/CodeMirror — pull request #762 by bfrohs (2012-08-28 16:46:35+00:00)
Title: Prevent selection from covering text (closes #760)

Alternatively, you can change the `z-index` of the selection's `

` to `-1` to fix the issue (which may be better, so `position:relative;` isn't added to every line's `

`).