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re_comp(3)                 Library Functions Manual                 re_comp(3)

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 at-
       tributes(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 6.04              2023-03-30                        re_comp(3)

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