Michael, I liked "(\*|\d{6})" also but when entered in: agent_id = session:playAndGetDigits(1, 3, 2, 10000,'#', 'c:/DictationProject/audio/Validating.wav', '', "(\*|\d{6})"); Creates the error: 2009-03-27 14:05:36 [ERR] switch_regex.c:184 switch_regex_match_partial() Regula r Expression Error expression[(*|d{6})] error[nothing to repeat] location[1] The escape characters seem to disappear and FS attempts to use the, /* an asterisk character, as * a metecharacter. Bob On Fri, Mar 27, 2009 at 2:02 PM, Michael Collins <msc@freeswitch.org> wrote:
2009/3/27 Robert Clayton <rjcajax@gmail.com>:
As I understand it everything entered in square brackets(a character class) is literal. In parentheses it is read as a metacharacter.
Character classes have their own rules. I don't recommend using them unless you know precisely what you are doing. I like Brian's regex of "(\*|\d{6})"
In brackets you have interesting things, like dashes not always being dashes and a leading caret meaning negation.
[^A-Z] <== what does this mean? ;)
In any case, check the regular expressions page on the wiki for more online resources. -MC
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