How to parse whitespace whthin '' or other unambiguous enclosing symbol

[CodeWenjiu]

Sometimes I need to pass arguments containing spaces. While I acknowledge that clap’s default space-based token splitting prevents ambiguity, I’m wondering if it’s possible to support space-delimited matching when using unambiguous enclosing symbols.
Is this achievable, and would such a feature request be considered reasonable?

[CodeWenjiu]

I find the same #5389
BTW I use bash, I will try on across different shells