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fe3157419c
Before this change, the detach-keys were not validated, and the code either
fell back to the default sequence, or returned an obscure error if the
invalid sequence would produce an error on the daemon;
Before this patch:
docker run -it --rm --detach-keys=shift-a,b busybox
unable to upgrade to tcp, received 400
With this patch:
docker run -it --rm --detach-keys=shift-a,b busybox
invalid detach keys (shift-a,b): Unknown character: 'shift-a'
Note that the "unable to upgrade to tcp, received 400" error is still
something to be looked into; the client currently discards error messages
coming from the daemon.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>