Interface to el_get(). Currently supported Property terms:
- editor(-Editor)
- Editor is unified with
emacs or vi, reflecting the current
keymap selected via el_bind/2 with -e / -v.
- bracketed_paste(-Boolean)
- Whether bracketed paste mode is currently enabled; see
el_set/2.
- prompt_marks(-Boolean)
- Whether the prompt and the input are marked with OSC 133; see
el_set/2.
Any other Property raises a domain_error(editline_property, _).