Frame.byte_count: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/lsp/frame.bend as Frame
Lines 204-210 of bolt@1.27.0.0/src/lsp/frame.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/lsp/frame.bend&start_line=204&end_line=210

import Base

# how many UTF-8 bytes the chars take, counted on from ds
def byte_count(cs: List<&2, Char>, ds: List<&2, Digit>) -> List<&2, Digit>:
  match cs:
    case Nil{}:
      ds
    case Con{c, t}:
      byte_count(t, tick.by(width(Char.to_u32(c)), ds))

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Char.to_u32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lsp/frame.bend&name=Digit
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lsp/frame.bend&name=tick.by
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lsp/frame.bend&name=width