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    \$\begingroup\$ This appears to output 1 for a non-double speak string, as well as a double speak string. \$\endgroup\$ Commented Aug 6, 2019 at 16:01
  • \$\begingroup\$ @AJFaraday try now - is double speak, is not double speak \$\endgroup\$ Commented Aug 6, 2019 at 16:07