--- a/doc/a2ps.texi~	2019-11-24 18:51:07.000000000 +0000
+++ a/doc/a2ps.texi	2019-11-24 18:56:30.390438433 +0000
@@ -1,5 +1,6 @@
 \input texinfo @c -*- texinfo -*-
 @c %**start of header
+@documentencoding ISO-8859-1
 @setfilename a2ps.info
 @settitle General Purpose PostScript Generating Utility
 @c @setchapternewpage odd

--- a/doc/regex.texi~	2002-03-04 18:46:24.000000000 +0000
+++ a/doc/regex.texi	2019-11-24 18:56:42.861052598 +0000
@@ -1,5 +1,6 @@
 \input texinfo
 @c %**start of header
+@documentencoding ISO-8859-1
 @setfilename regex.info
 @settitle Regex
 @c %**end of header

--- a/ogonkify/doc/ogonkify.texi~	2007-12-29 02:09:38.000000000 +0000
+++ a/ogonkify/doc/ogonkify.texi	2019-11-24 18:57:03.173424149 +0000
@@ -1,5 +1,6 @@
 \input texinfo   @c -*-texinfo-*-
 @c %**start of header
+@documentencoding ISO-8859-1
 @setfilename ogonkify.info
 @settitle Ogonkify
 @setchapternewpage off