Config represents an SSH config file.

Empty is a line in the config file that contains only whitespace or comments.

Host describes a Host or Match directive and the keywords that follow it.

Include holds the result of an Include directive, including the config files that have been parsed as part of that directive. At most 5 levels of Incl

KV is a line in the config file that contains a key, a value, and possibly a comment.

Node represents a line in a Config.

Pattern is a pattern in a Host declaration. Patterns are read-only values; create a new one with NewPattern().

Position of a document element within a SSH document. Line and Col are both 1-indexed positions for the element's line number and column number, resp

UserSettings checks ~/.ssh and /etc/ssh for configuration files. The config files are parsed and cached the first time Get() or GetStrict() is called.

Define state functions