Manpages - re_comp.3

re_comp, re_exec - BSD regex functions

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

  char *re_comp(const char *regex);
  int re_exec(const char *string);

*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.

*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.

For an explanation of the terms used in this section, see *attributes*(7).

4.3BSD.

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

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

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