EditPath opens a specified path in the configured editor.

EditText opens an editor with the initial contents populated from the provided string; the edited string is returned.

EditTextType takes a string that should be edited and opens an editor with that content preloaded; it returns the edited string.

Get returns the editor that will be used as determined by reading the EditorVar environment variable.

EditorVar specifies the environment variable we use to discover the editor command.

DefaultEditor is used if the user does not have EDITOR specified.

ErrNoEditor indicates that no EDITOR was set in the environment.