[binstub]

Nice intro. Tangential question. Is there a regex tool that shows where the expression failed ? Not in syntax, but the logical failure point? Would be useful for when an expression gets a little long and nested and modifications need to be made.

Edit: I mean like:

Target text is abcde

Regex is /abe/

Is there a tool that will tell me it matched a and b and then failed trying to match e ?

Those sites are great resources but they are showing pass/fail and do show an excellent breakdown when something satisfies the expression, but I’m just wondering if there is something that shows partial matching until the failure point?

[bmn__]

You want a debugger.

http://p3rl.org/rxrx

rxrx -e'"abcde" =~ /abe/'

Demo: https://blog-cloudflare-com-assets.storage.googleapis.com/20...

http://p3rl.org/re#'debug'-mode

perl -Mre=debug -e'"abcde" =~ /abe/'

----

https://stackoverflow.com/questions/2348694/how-do-you-debug...

[binstub]

Wow, where have I been. That’s awesome. Exactly what I was looking for . Thanks. My Google fu obviously is lacking.

[nickysielicki]

https://regexr.com/

https://regex101.com/

These websites have saved me hours of time at this point.