# Suppress deduplication based on comment.

# KEEPDUPS
sources = []

# KEEPDUPS
sources = [ "a" ]

# KEEPDUPS
sources += [ "a" ]

# KEEPDUPS
# This is KEEPDUPS because reason.
sources = [
  "z",
  "a",
  "z",
  "z2",
  "a",
  "y.cc",
]

# This is KEEPDUPS because reason:
# KEEPDUPS
sources += [
  "z",
  "a",
  "z",
  "z2",
  "a",
  "y.cc",
]