1RE_COMP(3)                 Linux Programmer's Manual                RE_COMP(3)
2
3
4

NAME

6       re_comp, re_exec - BSD regex functions
7

SYNOPSIS

9       #define _REGEX_RE_COMP
10       #include <sys/types.h>
11       #include <regex.h>
12
13       char *re_comp(const char *regex);
14       int re_exec(const char *string);
15

DESCRIPTION

17       re_comp()  is  used  to  compile the null-terminated regular expression
18       pointed to by regex.  The compiled pattern occupies a static area,  the
19       pattern  buffer,  which  is overwritten by subsequent use of re_comp().
20       If regex is NULL, no operation is performed and  the  pattern  buffer's
21       contents are not altered.
22
23       re_exec()  is used to assess whether the null-terminated string pointed
24       to by string matches the previously compiled regex.
25

RETURN VALUE

27       re_comp() returns NULL on successful compilation of regex otherwise  it
28       returns a pointer to an appropriate error message.
29
30       re_exec() returns 1 for a successful match, zero for failure.
31

ATTRIBUTES

33       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
34       tributes(7).
35
36       ┌──────────────────────────────────────────┬───────────────┬───────────┐
37       │Interface                                 │ Attribute     │ Value     │
38       ├──────────────────────────────────────────┼───────────────┼───────────┤
39       │re_comp(), re_exec()                      │ Thread safety │ MT-Unsafe │
40       └──────────────────────────────────────────┴───────────────┴───────────┘
41

CONFORMING TO

43       4.3BSD.
44

NOTES

46       These functions are obsolete; the functions  documented  in  regcomp(3)
47       should be used instead.
48

SEE ALSO

50       regcomp(3), regex(7), GNU regex manual
51

COLOPHON

53       This  page  is  part of release 5.12 of the Linux man-pages project.  A
54       description of the project, information about reporting bugs,  and  the
55       latest     version     of     this    page,    can    be    found    at
56       https://www.kernel.org/doc/man-pages/.
57
58
59
60GNU                               2021-03-22                        RE_COMP(3)
Impressum