tramp-ssh-controlmaster-options

tramp-ssh-controlmaster-options is a variable defined in `tramp.el'.
Its value is

"-o ControlPath=%t.%%r@%%h:%%p -o ControlMaster=auto -o ControlPersist=no"

• This variable may be risky if used as a file-local variable.

Documentation:
Call ssh to detect whether it supports the Control* arguments.
Return a string to be used in `tramp-methods'.