When using Copilot, users would like to be able to only partially accept suggestion instead of the whole suggestion at once.
The users demand either word by word or line by line completion.

Desired behaviour:
Press a predefined key and accept the whole suggestion.
Use a predefined combination of 2 keys to accept the top line of the suggestion. (eg: For a suggestion of 3 lines, the user would need to press the combination 3 times to accept the whole suggestion). The prompt would not show the line already accepted.