From 9e0075a3d902aa5236bbfdc0ad0d3028a55dc17e Mon Sep 17 00:00:00 2001
From: Gannon McGibbon <gannon.mcgibbon@gmail.com>
Date: Wed, 6 Jan 2021 12:20:03 -0500
Subject: Replace "iff" with "if and only if"

iff means if and only if, but readers without that knowledge might
assume this to be a spelling mistake. To me, this seems like
exclusionary language that is unnecessary. Simply using "if and only if"
instead should suffice.
---
 thread.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'thread.c')

diff --git a/thread.c b/thread.c
index 22b77b7f13..dce181d24e 100644
--- a/thread.c
+++ b/thread.c
@@ -5149,7 +5149,7 @@ recursive_list_access(VALUE sym)
 }
 
 /*
- * Returns Qtrue iff obj (or the pair <obj, paired_obj>) is already
+ * Returns Qtrue if and only if obj (or the pair <obj, paired_obj>) is already
  * in the recursion list.
  * Assumes the recursion list is valid.
  */
-- 
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