A user wrote in to point out the one in winhandl.c, and out of sheer
curiosity, I grepped the whole source base for '([a-zA-Z])\1\1' to see
if there were any others. Of course there are a lot of perfectly
sensible ones, like 'www' or 'Grrr', not to mention any amount of
0xFFFF and the iiii/bbbb emphasis system in Halibut code paragraphs,
but I did spot one more in the recently added udp.but section on
traits, and another in a variable name in uxagentsock.c.
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