From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#30095: substitute* decoding-error
Date: Sat, 13 Jan 2018 22:35:27 +0100
Message-ID: <87bmhxl9wg.fsf@gnu.org>
References: <7870af65-1d3f-408d-9b26-4a5850c776a2@cock.li>
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To: nee <nee@cock.li>
Cc: 30095@debbugs.gnu.org

Hi,

nee <nee@cock.li> skribis:

> Hello, attached is a package definition that fails because substitute*
> throws an error. The file I try to substitute* on has some names with
> special signs like =C3=AB and =C3=A9 that might be related?

Most likely the file in question is not UTF-8-encoded, whereas
=E2=80=98substitute*=E2=80=99 defaults to UTF-8.

If it=E2=80=99s Latin-1 (aka. ISO-8859-1), you can do:

  (with-fluids ((%default-port-encoding "ISO-8859-1"))
    (substitute* =E2=80=A6))

which should solve the problem (there are a few examples of that in the
package definitions.)

HTH!

Ludo=E2=80=99.
=20=20