re_comp, re_exec - BSD regex functions
re_comp() is used to compile the null-terminated regular expression pointed to by
regex. The compiled pattern occupies a static area, the pattern buffer, which is overwritten by subsequent use of re_comp(). If
regex is NULL, no operation is performed and the pattern buffer's contents are not altered.
re_exec() is used to assess whether the null-terminated string pointed to by
string matches the previously compiled
These functions are obsolete; the functions documented in regcomp(3) should be used instead.
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