go-ansiterm cannot tell whether \n should mean CRLF or just LF

[jstarks]

Newline is ambiguous: in "cooked" mode, it should mean CRLF (new line, move cursor to leftmost column), but in raw mode, it should mean just LF (next line without moving cursor).

Bash, nano, vi, etc. don't seem to mind. Emacs sometimes tries to use a LF.

Unfortunately, docker sets the raw mode of the terminal by directly calling a Windows API on the input console handle. go-ansiterm only has access to the output console handle, so it can't even query it to find out if docker has set it to raw mode.

To fix this, either docker needs to change the way it enables raw mode, or go-ansiterm needs to get access to the input handle.

[ahmetb]

Hmm we can have it fixed on both sides (here and docker/docker) if needed?

[jstarks]

I took a shot at it, but Docker's console handling spreads into notary and libcontainer, so it's going to be challenging.