From 666f81af8206d47555185d04b3efe40c414cfc92 Mon Sep 17 00:00:00 2001
From: Eris <eris@berries.home>
Date: Fri, 15 May 2020 22:38:45 +0100
Subject: [PATCH] Add note about is_int portability.

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 60ea6d8..b10e958 100644
--- a/README.md
+++ b/README.md
@@ -912,7 +912,7 @@ $ true
 ```
 
 ## Check if a number is an integer
-
+Note: This does not work in `zsh`, or `zsh` invoked as `sh`, as `printf %d` called with a string in zsh simply prints 0 rather than erroring.
 **Example Function:**
 
 ```sh