# DEFINE: %{global:suffix} = @
# RUN: echo '@%{global:suffix}'

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

# CHECK: Unresolved: 1 {{\([0-9]*.[0-9]*%\)}}