pragmatism first

flockfile, ftrylockfile, funlockfile

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This manual	Reference	Other manuals
flockfile(3)	referred by	stdio_ext(3) \| unlocked_stdio(3)
flockfile(3)	refer to	attributes(7) \| feature_test_macros(7) \| fgetc(3) \| flock(2) \| lockf(3) \| puts(3) \| unlocked_stdio(3)