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Commit 4db73c1b authored by Geoff Thorpe's avatar Geoff Thorpe
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(A version of) gcc had been giving somewhat odd "trigraph" warnings about

this construct, and Ulf provided the following insight as to why;

> ANSI C compliant compilers must substitute "??)" for "]" because your
> terminal might not have a "]" key if you bought it in the early 1970s.

So we escape the final '?' to avoid this pathological case.
parent 3ae34e3a
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