Don’t have time to test right now but something along these lines: \b[0-9] ?(yr|yo|year)
\b is a word break ? Means 0 or 1 of previous char (space) | is alternate separator Thanks, Brian On Aug 1, 2018, 11:58 AM -0500, Stephen MacLean via use-livecode <use-livecode@lists.runrev.com>, wrote: > Hi David, > > While no expert on Regex, there are some online tools and libraries that you > can use to work out the appropriate regex before putting it into your LC > script. > > Some sites I use: > > https://www.regextester.com > > https://regex101.com > > https://www.rexegg.com/regex-quickstart.html > > and > > http://www.regexlib.com > > which has a lot of pre-built regex codes and examples. Most work without > issue when putting them into LCS. > > You can also take a look, if you haven’t already, at an example that I made > using LCS and LCB, rsIsValid: > https://forums.livecode.com/viewtopic.php?t=26653 > > HTH! > > Steve MacLean > > > On Aug 1, 2018, at 12:34 PM, David V Glasgow via use-livecode > > <use-livecode@lists.runrev.com> wrote: > > > > > > I am just dipping my toes in the shallows of regex, and have already > > stubbed my toe on a rock. Well two, actually. > > > > I am looking to identify the lines of a field (that contain lots of words > > and symbols with no particular structure or separator ) finding age related > > terms, which can be in a variety of forms. I made a list of the terms that > > I want to use. > > > > First problem: > > > > I use the following filter line > > > > filter lines of it with regex pattern i > > > > … where i is a keyword lifted from my list. Oddly, where i is just ordinary > > characters, it works fine. However if it includes a wildcard symbol, it > > chokes with “execution error at line 9 (matchChunk: error in pattern > > expression), char 1”. For example, if i = child* (intending to match child, > > childlike, childhood, childish etc). I know that’s a bad example, because > > just ‘child' will do the trick. However, there seems to be some voodoo > > needed to put a regex expression into a variable, is that right? > > > > Second problem is the sheer brain ache from trying to work out how to > > efficiently match lines containing 8 yo, 8 yr, 8yr, 8yo, 8 year and 8year, > > but not 18 year, 38yo etc etc. > > > > The simplest way would be to include all variants in the keyword list. > > However, that means more sweeps through the repeat loop. And it wouldn’t > > solve the problem of excluding 18 yo, 28 yo matching, unless I can > > construct a regex expression which will test the absence of any number > > between 1 and 9 immediately before the actual string I am finding. > > > > Am I on a wild goose chase here? > > > > > > > > > > Best Wishes, > > David Glasgow > > > > > > <http://www.i-psych.co.uk/> <https://twitter.com/iPsychApps> > > > > <https://twitter.com/iPsychApps> <http://uk.linkedin.com/in/davidvglasgow> > > <http://uk.linkedin.com/in/davidvglasgow> > > _______________________________________________ > > use-livecode mailing list > > use-livecode@lists.runrev.com > > Please visit this url to subscribe, unsubscribe and manage your > > subscription preferences: > > http://lists.runrev.com/mailman/listinfo/use-livecode > > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
