Structs
Enums
Traits
Functions
return the closest enclosing directory
Replace a group in the execution string, using data from the user input and from the selected line
Improve the path to try remove and solve .. token.
Build a usable path from a user input which may be absolute (if it starts with / or ~) or relative to the supplied base_dir. (we might want to try detect windows drives in the future, too)