From 55f6f9a88add2010a5ab7bcbd5f715a2801cf272 Mon Sep 17 00:00:00 2001
From: Thien-Thi Nguyen <ttn@gnu.org>
Date: Thu, 6 Apr 2017 15:54:36 +0200
Subject: Add character-encoding guideline

* doc/contribute.texi (Macro Format):
Add a blurb on the preferred character encoding
and an example of applying the guideline.
---
 doc/contribute.texi | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'doc')

diff --git a/doc/contribute.texi b/doc/contribute.texi
index 61922aa..019ea14 100644
--- a/doc/contribute.texi
+++ b/doc/contribute.texi
@@ -3,6 +3,9 @@
 Each macro in the Archive has an all-upper-case name with the prefix
 @code{AX_}.  The macro is stored in a file with the same name, in lower case,
 and with the suffix @code{.m4}.
+Unless absolutely necessary, the file contents should be in ASCII.
+For example, use apostrophe (U+27) for quoting identifiers
+instead of Unicode quotation mark characters U+2018, U+2019.
 
 The file should begin with a header comment containing three named sections:
 synopsis, description, and license.
-- 
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