On Wed, Oct 20, 2021 at 12:02 PM <2qdxy4rzwzuui...@potatochowder.com> wrote: > > On 2021-10-20 at 11:48:30 +1100, > Chris Angelico <ros...@gmail.com> wrote: > > > TBH swapcase is a bit of a minefield if you don't know what language > > you're working with. > > [...] > > > The most logical "negation" of a string would be reversing it, which > > WOULD be... well, reversible. But that doesn't need an operator, since > > it already has slice notation. > > Slice notation is also a minefield; [some] explosives are combining > characters.
True, but since all of Python's indexing, slicing, etc, is defined by codepoints, what that really means is that slicing/reversing a string can cause peculiar behaviours. But that's true of many other types of characters too; if you mix LTR and RTL text, with some directionless text in between, you'll see some very peculiar behaviour when you reverse it (try getting an English word, some ASCII digits, and an Arabic word - the digits are the same ones that both languages use). So I don't think combining characters are unique here. "Reversing" text means many different things depending on context. ChrisA _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/VPFBG3M4FNB7QMRW3TO6M5JT4QT2PMYG/ Code of Conduct: http://python.org/psf/codeofconduct/
