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BEGIN { special = 0 }
/ERRNOS/ { nerrnos = split(errnos, errs)
for (i = 1; i <= nerrnos; ++i)
# Some systems define errno codes inside undefined #ifdefs,
# and then never actually use them.
printf "#ifdef %s\n DO(\"%s\", %s);\n#endif\n", \
errs[i], errs[i], errs[i]
special = 1 }
{ if (special == 0) print $0; special = 0 }
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