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
regex.
RETURN VALUE
re_comp()
returns NULL on successful compilation of
regex
otherwise it returns a pointer to an appropriate error message.
re_exec()
returns 1 for a successful match, zero for failure.
CONFORMING TO
4.3BSD.
NOTES
These functions are obsolete; the functions documented in
regcomp(3)
should be used instead.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
