[Issue 16053] SysTime.fromIsoExtString don't work if nanoseconds are presented

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16053

--- Comment #2 from Jonathan M Davis <issues.dlang at jmdavisProg.com> ---
https://github.com/dlang/phobos/pull/5389

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