All excellent pointers. Thank you all. I have to assume I can use lookahead and lookbehind assertions in JavaScript, either natively or via a node library, but wasn't sure how to phrase the question to begin with.
Kind regards, Ted On Wed, Feb 24, 2021 at 7:57 AM jj <[email protected]> wrote: > Hi Ted, > > BBEdit regular expressions are based on PCRE2 (see credits in 'BBEdit > about'). > > For quick reference the BBEdit Help is excellent: 'Help menu' > BBEdit > Help > Quick Reference > Grep Reference. > For the definitive documentation on PCRE: > https://www.pcre.org/current/doc/html/pcre2syntax.html > And for JavaScript: > https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Cheatsheet > > You can also test and compare your regular expressions in this excellent > playground : https://regex101.com > > Best regards, > > Jean Jourdain > > > On Wednesday, February 24, 2021 at 6:37:09 AM UTC+1 Harvey Pikelberger > wrote: > >> Re non-capturing parentheses, this might help: >> https://stackoverflow.com/questions/3512471/what-is-a-non-capturing-group-in-regular-expressions >> >> For the most part RegEx in JS & BBEdit are much the same. The big >> difference is that in JS vs BBEdit is the syntax for the backreference. >> (\ (backslash) in BBEdit vs $ in JS) >> >> So for example say your Find is "AE" plus a 3rd uppercase character >> [A-Z], followed by a number [0-9], where you want to inserted new text >> between the letters and numbers... >> >> In BBEdit that would be Find: *(AE[A-Z])([0-9])* Replace: >> *\1InsertedNewText\2* >> In JS the same thing is: SomeText.replace(/(AE[A-Z])([0-9])/g, >> $1InsertedNewText$2); >> >> >> >> >> >> On Feb 23, 2021, at 1:43 PM, Ted Stresen-Reuter <[email protected]> >> wrote: >> >> I'm trying to do some advanced parsing of source code using RegEx. I'm >> using non-capturing parentheses "(?…)" and friends for look aheads and look >> behinds and such. I'm wondering if anyone can tell me: >> >> 1. What type of RegEx extension are these types of patterns (look aheads, >> look behinds)? >> 2. Is there an equivalent that could be used in JavaScript, say, in a >> node application? >> >> >> -- > This is the BBEdit Talk public discussion group. If you have a feature > request or need technical support, please email "[email protected]" > rather than posting here. Follow @bbedit on Twitter: < > https://twitter.com/bbedit> > --- > You received this message because you are subscribed to the Google Groups > "BBEdit Talk" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/bbedit/f5e5f412-27c5-405d-ba8c-5067319e0221n%40googlegroups.com > <https://groups.google.com/d/msgid/bbedit/f5e5f412-27c5-405d-ba8c-5067319e0221n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- This is the BBEdit Talk public discussion group. If you have a feature request or need technical support, please email "[email protected]" rather than posting here. Follow @bbedit on Twitter: <https://twitter.com/bbedit> --- You received this message because you are subscribed to the Google Groups "BBEdit Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/bbedit/CAKAQjidvnRO0XEZwsbRFeQuRdVb28MEJ_Q0Ka19dQPX4fYdGgQ%40mail.gmail.com.
