[Issue 20255] undefined identifier ascii in package std

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20255

--- Comment #1 from Mike Pryadko <mike.pryadko at gmail.com> ---
P.S. my software versions:
~$ dmd --version
DMD64 D Compiler v2.088.0
Copyright (C) 1999-2019 by The D Language Foundation, All Rights Reserved
written by Walter Bright
~$ dub --version
DUB version 1.17.0, built on Sep  1 2019

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