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Annotation of cci/usr/src/man/man3/regex.3, revision 1.1.1.1

1.1       root        1: .TH REGEX 3 "29 February 1980"
                      2: .UC 4
                      3: .SH NAME
                      4: re_comp, re_exec \- regular expression handler
                      5: .SH SYNOPSIS
                      6: .B char *re_comp(s)
                      7: .br
                      8: .B char *s;
                      9: .PP
                     10: .B re_exec(s)
                     11: .br
                     12: .B char *s;
                     13: .SH DESCRIPTION
                     14: .I Re_comp
                     15: compiles a string into an internal form suitable for pattern matching. 
                     16: .I Re_exec 
                     17: checks the argument string against the last string passed to
                     18: .I re_comp.
                     19: .PP
                     20: .I Re_comp
                     21: returns 0 if the string
                     22: .I s
                     23: was compiled successfully; otherwise a string containing an
                     24: error message is returned. If 
                     25: .I re_comp
                     26: is passed 0 or a null string, it returns without changing the currently
                     27: compiled regular expression.
                     28: .PP
                     29: .I Re_exec
                     30: returns 1 if the string
                     31: .I s
                     32: matches the last compiled regular expression, 0 if the string
                     33: .I s
                     34: failed to match the last compiled regular expression, and \-1 if the compiled
                     35: regular expression was invalid (indicating an internal error).
                     36: .PP
                     37: The strings passed to both
                     38: .I re_comp
                     39: and
                     40: .I re_exec
                     41: may have trailing or embedded newline characters; 
                     42: they are terminated by nulls.
                     43: The regular expressions recognized are described in the manual entry for 
                     44: .IR ed (1),
                     45: given the above difference.
                     46: .SH "SEE ALSO"
                     47: ed(1), ex(1), egrep(1), fgrep(1), grep(1)
                     48: .SH DIAGNOSTICS
                     49: .I Re_exec
                     50: returns \-1 for an internal error.
                     51: .PP
                     52: .I Re_comp
                     53: returns one of the following strings if an error occurs:
                     54: .PP
                     55: .nf
                     56: .in +0.5i
                     57: \fINo previous regular expression,
                     58: Regular expression too long,
                     59: unmatched \e(,
                     60: missing ],
                     61: too many \e(\e) pairs,
                     62: unmatched \e).\fP
                     63: .in -0.5i
                     64: .fi

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