# DEFINE: %{global:greeting}=Hello
# RUN: %{global:echo}

#      CHECK: ValueError: Substitution whose pattern contains '%{global:greeting}' is already defined before '{{DEFINE}}:' directive at line [[#@LINE-3]]
# CHECK-NEXT: Existing pattern: %{global:greeting}
#  CHECK-NOT: Existing pattern:

# CHECK: Unresolved: 1
