regexkitlite

I'm trying to scan a given string for a number. The number cannot be after "v/v./vol/vol.", and cannot be inside parentheses. Here's what I have: NSString *regex = @"(?i)(?<!v|vol|vol\\.|v\\.)\\d{1,4}(?![\\(]{0}.*\\))"; NSLog(@"Result: %@", [@"test test test 4334 test test" stringByMatching:regex]); NSLog(@"Result: %@", [@"test test test(4334) test test" stringByMatching:regex]); NSLog(@"Result: %@", [@"test test test(vol.4334) test test" stringByMatching:regex]); Infuriatingly, this does not work. My regex can be separated into four parts: (?i) - make regex case insensitive (?<!v|vol|vol\\.|v

I have a chat view, where users can send urls to one another. In case of a url, I want to let the user press on the link and open a web view. I'm using IFTweetLabel which uses RegexKitLite. Currently the only support available is if the url starts with http/https. I want to support links without the http, for example : www.nytimes.com , and even without the "www" , nytimes.com. (and bunch of other extentions). This is the http/s prefix reg exp : @"([hH][tT][tT][pP][sS]?:\\/\\/[^ ,'\">\\]\\)]*[^\\. ,'\">\\]\\)]) Can someone tell me the other regular expressions I need to answer my other

I'm constructing a regular expression that uses strings input by the user but the strings might contain special characters such as . \ or * and I want those to be treated as literals and not interpreted by their special meanings in the regex. I've tried this: NSString *word = [input stringByReplacingOccurrencesOfRegex:@"(\\P{L})" withString:@"\\$1"]; but the non letter characters are converted to '$1' instead of being prefixed with a backslash. I've tried one and three backslashes in the second term but those give me an 'Unknown escape sequence' warning in XCode. How can I print a backslash