[Issue 20645] printf deprecation for width + precision

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20645

Walter Bright <bugzilla at digitalmars.com> changed:

           What    |Removed                     |Added
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--- Comment #4 from Walter Bright <bugzilla at digitalmars.com> ---
The relevant Standard is C99 7.9.16. Please do not defer to online rewrites of
the Standard, as they are sloppy in the subtle details.

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