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* The syntax of the roff(7) .mc request is quite specialIngo Schwarze2022-04-284-0/+63
and the roff_onearg() parsing function is too generic, so provide a dedicated parsing function instead. This fixes an assertion failure when an \o escape sequence is passed as the argument; the bug was found by tb@ using afl(1). It also makes mandoc output more similar to groff in various cases.