1# In python's re.sub patterns, '.' means any character. If we permitted that 2# in a substitution name (and escaped it before recording it as a substitution), 3# it would be confusing if someone tried to use the same name in a lit 4# configuration file, where the pattern isn't escaped automatically. 5 6# DEFINE: %{foo.bar} = value 7# RUN: echo %{foo.bar} 8 9# CHECK: Substitution name '%{foo.bar}' is malformed {{.*}} 10# CHECK-NEXT: in {{DEFINE}}: directive on test line [[#@LINE-4]] 11 12# CHECK: Unresolved: 1 {{\([0-9]*.[0-9]*%\)}} 13