Date:        Sun, 21 Jul 2019 16:15:05 +0200
    From:        tlaro...@polynum.com
    Message-ID:  <20190721141505.ga4...@polynum.com>

  | For safety, in my scripts, I simply circumvent by a
  | leading "%c" or "\055"

I'd suggest %s (with a '' arg) (even %.0s to make it blatant)
as a clearer way to show what is happening

        printf %s---\\n ''

kre

ps: commits are done now.

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