Frame.split.on: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/lsp/frame.bend as Frame
Lines 327-334 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=327&end_line=334

import Base

# the bytes taken so far and the rest once the count is down to zero, else
# what more gives
def split.on(zz: Bool, xs: List<&2, U32>, acc: List<&2, U32>, more: Unit -> Cut) -> Cut:
  match zz:
    case True{}:
      Whole{List.reverse(&2, U32, acc), xs}
    case False{}:
      more(Unit{})

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=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.reverse
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/lsp/frame.bend&name=Cut