match with regex doesn't set variable correctly when backtracking.

Question

match with regex doesn't set variable correctly when backtracking.

adam-antonik opened this issue 4 years ago · comments

Changing the example from the from the front-page slightly to match "f(o*)obar"

match "foobar" with
| 'f(?<os>o*)obar' -> os
| _               -> "???"

will evaluate to "oo", not "o". Similarly, if we use 'f(?.*)bar', then os = "oobar".

kthielen · Answer 1 · Fri Jul 17 2020 00:28:22 GMT+0800 (China Standard Time)

Good catch, I will take a look.

kthielen · Answer 2 · Tue Sep 29 2020 04:37:04 GMT+0800 (China Standard Time)

Sorry adam, lots going on, I'm no longer part of the project or Morgan Stanley, can't submit a change anymore. I might be able to get a fix into my fork but have some other issues to take care of first.