From dc7bd2ca29633a818da79088f13d2da1fe58c673 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Sat, 21 Sep 2019 16:35:45 +0200
Subject: [PATCH] DOCS/contribute.md: expand on recommended C99 usage

---
 DOCS/contribute.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/DOCS/contribute.md b/DOCS/contribute.md
index 5f514b06d6..7afce3be56 100644
--- a/DOCS/contribute.md
+++ b/DOCS/contribute.md
@@ -152,7 +152,7 @@ General coding
 --------------
 
 - Use C99. Also freely make use of C99 features if it's appropriate, such as
-  stdbool.h.
+  stdbool.h. (Except VLA and complex number types.)
 - Don't use GNU-only features. In some cases they may be warranted, if they
   are optional (such as attributes enabling printf-like format string checks).
   But in general, standard C99 should be used.