Compose.is_merge: def of yaml-for-bend@0.1.1.0
Import: import yaml-for-bend@0.1.1.0/compose.bend as Compose
Lines 281-291 of yaml-for-bend@0.1.1.0/compose.bend: https://jend.leeeet.dev/read.txt?path=yaml-for-bend@0.1.1.0/compose.bend&start_line=281&end_line=291

import Base
import yaml-for-bend@0.1.1.0/parse.bend as P
import yaml-for-bend@0.1.1.0/core.bend as C

# Whether a scalar is YAML 1.1's merge key: "<<" plain, or tagged !!merge.
def is_merge(s: Schema, t: P.Tag, +text: String, +plain: Bool) -> Bool:
  match s:
    case Core{}:
      False{}
    case Yaml11{}:
      match t:
        case P.NoTag{}:
          Bool.and(plain, String.eq(text, "<<"))
        case P.Tag{n}:
          String.eq(n, C.yaml.tag("merge"))

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.eq
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/compose.bend&name=Schema
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/core.bend&name=yaml.tag
  https://jend.leeeet.dev/definition.txt?path=yaml-for-bend@0.1.1.0/parse.bend&name=Tag