font-FiraCode/features/calt/hyphen_arrows.fea

### Arbitrary-length arrows #346

lookup hyphen_arrows {
  # Disable |||
  ignore sub bar bar' bar hyphen;
  ignore sub bar bar' hyphen;
  ignore sub [hyphen_start.seq hyphen_middle.seq] bar' bar bar;

  # hyphen middle & end
  sub [less_hyphen_start.seq less_less_hyphen_start.seq less_hyphen_middle.seq less_less_hyphen_middle.seq greater_hyphen_start.seq greater_greater_hyphen_start.seq greater_hyphen_middle.seq greater_greater_hyphen_middle.seq bar_hyphen_start.seq bar_bar_hyphen_start.seq bar_hyphen_middle.seq bar_bar_hyphen_middle.seq hyphen_start.seq hyphen_middle.seq] hyphen' [hyphen less greater bar] by hyphen_middle.seq;

  sub [less_hyphen_start.seq less_less_hyphen_start.seq less_hyphen_middle.seq less_less_hyphen_middle.seq greater_hyphen_start.seq greater_greater_hyphen_start.seq greater_hyphen_middle.seq greater_greater_hyphen_middle.seq bar_hyphen_start.seq bar_bar_hyphen_start.seq bar_hyphen_middle.seq bar_bar_hyphen_middle.seq hyphen_start.seq hyphen_middle.seq] hyphen' by hyphen_end.seq;

  # double middles
  sub [hyphen_start.seq hyphen_middle.seq] less.spacer    less'    hyphen by less_less_hyphen_middle.seq;
  sub [hyphen_start.seq hyphen_middle.seq] less'          less     hyphen by less.spacer;
  sub [hyphen_start.seq hyphen_middle.seq] greater.spacer greater' hyphen by greater_greater_hyphen_middle.seq;
  sub [hyphen_start.seq hyphen_middle.seq] greater'       greater  hyphen by greater.spacer;
  sub [hyphen_start.seq hyphen_middle.seq] bar.spacer     bar'     hyphen by bar_bar_hyphen_middle.seq;
  sub [hyphen_start.seq hyphen_middle.seq] bar'           bar      hyphen by bar.spacer;

  # single middles
  sub [hyphen_start.seq hyphen_middle.seq] less'    hyphen by less_hyphen_middle.seq;
  sub [hyphen_start.seq hyphen_middle.seq] greater' hyphen by greater_hyphen_middle.seq;
  sub [hyphen_start.seq hyphen_middle.seq] bar'     hyphen by bar_hyphen_middle.seq;

  # double ends
  sub [hyphen_start.seq hyphen_middle.seq] less.spacer    less'    by less_less_hyphen_end.seq;
  sub [hyphen_start.seq hyphen_middle.seq] less'          less     by less.spacer;
  sub [hyphen_start.seq hyphen_middle.seq] greater.spacer greater' by greater_greater_hyphen_end.seq;
  sub [hyphen_start.seq hyphen_middle.seq] greater'       greater  by greater.spacer;
  sub [hyphen_start.seq hyphen_middle.seq] bar.spacer     bar'     by bar_bar_hyphen_end.seq;
  sub [hyphen_start.seq hyphen_middle.seq] bar'           bar      by bar.spacer;

  # single ends
  sub [hyphen_start.seq hyphen_middle.seq] less'    by less_hyphen_end.seq;
  sub [hyphen_start.seq hyphen_middle.seq] greater' by greater_hyphen_end.seq;
  sub [hyphen_start.seq hyphen_middle.seq] bar'     by bar_hyphen_end.seq;

  # double beginnings
  sub less.spacer    less'    hyphen by less_less_hyphen_start.seq;
  sub less'          less     hyphen by less.spacer;
  sub greater.spacer greater' hyphen by greater_greater_hyphen_start.seq;
  sub greater'       greater  hyphen by greater.spacer;
  sub bar.spacer     bar'     hyphen by bar_bar_hyphen_start.seq;
  sub bar'           bar      hyphen by bar.spacer;

  # single beginnings
  sub less'    hyphen by less_hyphen_start.seq;
  sub greater' hyphen by greater_hyphen_start.seq;
  sub bar'     hyphen by bar_hyphen_start.seq;
  sub hyphen' [hyphen less greater bar] by hyphen_start.seq;
} hyphen_arrows;