* Use lineShift
* Use fromA instead of fromB
* Only check the update doc
* Always use oldDoc
* Copy tests
GitOrigin-RevId: 05e5516b09ee4a25d8ac2b5f2994a034f35c9e82
* Update Copybara options in preparation for open-sourcing the source editor
* Move files
* Update paths
* Remove source-editor module and checks for its existence
* Explicitly mention CM6 license in files that contain code adapted from CM6
GitOrigin-RevId: 89b7cc2b409db01ad103198ccbd1b126ab56349b