overlapping pattern

[dongweigogo]

Does this package support overlapping searching like finditer(patter, overlapped=True) in python package regex?

[BurntSushi]

Please provide more detail. I don't see any support for overlapping matches in Python's regex library: https://docs.python.org/3/library/re.html Please provide links, and, ideally a code sample.

[dongweigogo]

@BurntSushi Sorry for that, here is the link , and please refer:

‘Overlapped’ argument for regex.findall and regex.finditer
regex.findall and regex.finditer support an ‘overlapped’ flag which permits overlapped matches.

[BurntSushi]

I asked you for a code sample so that I can understand what problem you're trying to solve. But you didn't give me one. As far as I can tell, strictly speaking, no, overlapping matches are not and will never be supported. However, some use cases may be aptly covered by RegexSet, which does permit overlapping matches to a degree.

[expenses]

Not sure if I should bump this but I have a use case for overlapping patterns. I'm writing a library for 2d pattern matching similar to what https://github.com/mxgmn/MarkovJunior does. This requires finding all overlapping patterns like \0\0. It's not very obvious how I should be doing this without overlapping patterns.

[BurntSushi]

@expenses Code examples would help. If it's just literals like \0\0, then you should be able to use the aho-corasick crate.

If you do need overlapping regex matches, then some of the low level APIs in regex-automata support it. Feel free ask Discussion questions about it.