From 976a3f0c69fef2a5897f767d4f4048f5574552ae Mon Sep 17 00:00:00 2001
From: Yihui Xie <xie@yihui.name>
Date: Sat, 20 May 2017 23:56:14 -0500
Subject: [PATCH] add a comment for my future self

---
 R/testit.R | 1 +
 1 file changed, 1 insertion(+)

diff --git a/R/testit.R b/R/testit.R
index fcefb3c..b81eccd 100644
--- a/R/testit.R
+++ b/R/testit.R
@@ -73,6 +73,7 @@
 #' })
 assert = function(fact, ...) {
   mc = match.call()
+  # match.call() uses the arg order in the func def, so fact is always 1st arg
   fact = NULL
   if (is.character(mc[[2]])) {
     fact = mc[[2]]; mc = mc[-2]