NAME
regexp - Regexp matching function.
SYNTAX
string *regexp(string *list, string pattern)
DESCRIPTION
Match the pattern pattern against all strings in list, and
return a new array with all strings that matched. This
function uses the same syntax for regular expressions as ed():
. Match any character.
^ Match begin of line.
$ Match end of line.
< Match begin of word.
> Match end of word.
x|y Match regexp x or regexp y.
() Match enclosed regexp like a 'simple' one.
x* Match any number (0 or more) of regexp x.
[..] Match one of the characters enclosed.
[^ ..] Match none of the characters enclosed. The .. are to
replaced by single characters or character ranges:
[abc] matches a, b or c.
[ab0-9] matches a, b or any digit.
[^a-z] does not match any lowercase character.
\c match character c even if it's one of the special characters.
If there is an error in the regular expression 0 will be
returned. Remember that the character "\" has to be escaped
with a "\" when written as a LPC string.
EXAMPLE
string strs;
if (strs = regexp( ({"please, help me Sir John."}),
"\\.*\\"))
if (sizeof(strs)
write("It matches.\n");
The regular expression will test the given string (which is
packed into an array) if there is something like "help ... me"
inside of it.
SEE ALSO
sscanf in efun/type_related/sscanf