Popular extensions like Charinsert use this method to wrap text around a
selection. This patch adds support for multiple selections in CM6.
Some options to encapsulateSelection do not yet have explicit support
here, such as 'peri', but it's unclear if they are truly needed.
Bug: T211205
Change-Id: Idc0abb64eb036fa4a60382aca401d1dba1722405
This was working before somehow… but according to the CodeMirror docs,
it never syncs with the textarea automatically, so regardless this is
a necessary safeguard at least.
Repro steps:
1) Have CodeMirror turned on
2) Open a page for editing
3) Add content
4) Toggle CodeMirror off
With this patch, it should now always be synced.
Also add selenium test to ensure this doesn't break again.
Bug: T317243
Change-Id: Ie44e62fe5838bf32f40c6a3595ec3f541380cfe1
