tests: Add test for doubled parentheses.
authorBen Pfaff <blp@cs.stanford.edu>
Wed, 1 Jun 2022 19:09:43 +0000 (12:09 -0700)
committerBen Pfaff <blp@cs.stanford.edu>
Wed, 1 Jun 2022 22:22:05 +0000 (15:22 -0700)
I can't reproduce the problem reported in a bug report, but it seems
worthwhile to add a test for it anyway.

Bug #62557.


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