NAME

       re_comp, re_exec - BSD regex functions

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #define _REGEX_RE_COMP
       #include <sys/types.h>
       #include <regex.h>

       [[deprecated]] char *re_comp(const char *regex);
       [[deprecated]] int re_exec(const char *string);

DESCRIPTION

       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.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).
       ┌───────────────────────────────────────────────────────────────────────────┬───────────────┬───────────┐
       │ Interface                                                                 │ Attribute     │ Value     │
       ├───────────────────────────────────────────────────────────────────────────┼───────────────┼───────────┤
       │ re_comp(), re_exec()                                                      │ Thread safety │ MT-Unsafe │
       └───────────────────────────────────────────────────────────────────────────┴───────────────┴───────────┘

STANDARDS

       None.

HISTORY

       4.3BSD.

       These functions are obsolete; the functions documented in regcomp(3) should be used instead.

SEE ALSO

       regcomp(3), regex(7), GNU regex manual

Linux man-pages 6.7                                2023-10-31                                         re_comp(3)