[Swan-commit] Changes to ref refs/heads/main

[D. Hugh Redelmeier]

New commits:
commit 978fae35ee3e8da00fe5a733dfc4a0247a0b3b36
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Sat May 29 11:15:58 2021 -0400

    pervasive: eliminate a few more erratic spaces in C code