Cover.xscan.fix: def of gralha-coverage@0.1.0.1
Import: import gralha-coverage@0.1.0.1/cover.bend as Cover
Lines 998-1006 of gralha-coverage@0.1.0.1/cover.bend: https://jend.leeeet.dev/read.txt?path=gralha-coverage@0.1.0.1/cover.bend&start_line=998&end_line=1006

import Base

# A row whose exact areas showed an overlap is scanned again with the
# sub-scanlines over its own pieces; other rows keep their runs. Either way
# the pieces the next row no longer reaches are retired.
def xscan.fix(bad: Bool, runs: List<&2, Run>, active: List<&2, Piece>, +y: F32, +sub: U32, +w: U32) -> List<&2, Run> & List<&2, Piece>:
  match bad:
    case False{}: (runs, pieces.retire(active, (y + 1.0 : F32), Nil{}))
    case True{}:
      +act = active
      (rows.head(scan.rows(1, sub, lines.sort(pieces.lines(act, y, Nil{})), False{}, w)), pieces.retire(act, (y + 1.0 : F32), Nil{}))

Uses (14):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=gralha-coverage@0.1.0.1/cover.bend&name=Piece
  https://jend.leeeet.dev/definition.txt?path=gralha-coverage@0.1.0.1/cover.bend&name=Run
  https://jend.leeeet.dev/definition.txt?path=gralha-coverage@0.1.0.1/cover.bend&name=lines.sort
  https://jend.leeeet.dev/definition.txt?path=gralha-coverage@0.1.0.1/cover.bend&name=pieces.lines
  https://jend.leeeet.dev/definition.txt?path=gralha-coverage@0.1.0.1/cover.bend&name=pieces.retire
  https://jend.leeeet.dev/definition.txt?path=gralha-coverage@0.1.0.1/cover.bend&name=rows.head
  https://jend.leeeet.dev/definition.txt?path=gralha-coverage@0.1.0.1/cover.bend&name=scan.rows