Cli.tone_on: def of cli@0.2.0.0
Import: import cli@0.2.0.0/cli.bend as Cli
Lines 933-940 of cli@0.2.0.0/cli.bend: https://jend.leeeet.dev/read.txt?path=cli@0.2.0.0/cli.bend&start_line=933&end_line=940

import Base

# A skin tone after an emoji that takes one widens it to 2; any other is
# 2 wide alone, as East Asian Wide.
def tone_on(takes: Bool, narrow: Bool, join: Bool, code: U32) ->
    WidthStep:
  match takes:
    case True{}:
      WidthStep{Bool.pick(Nat, narrow, 1n, 0n), EmojiBase{code, False{}, join}}
    case False{}: WidthStep{2n, EmojiNone{}}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=cli@0.2.0.0/cli.bend&name=EmojiRun
  https://jend.leeeet.dev/definition.txt?path=cli@0.2.0.0/cli.bend&name=WidthStep