From d6d74706835d4a8220bda063c9af70793bfe268c Mon Sep 17 00:00:00 2001
From: Jan Vitturi <vitturi.jan@gmail.com>
Date: Fri, 20 Sep 2019 15:36:14 +0200
Subject: [PATCH] Add caveats for unexpanded globs

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 42ba1f3..263ff18 100644
--- a/README.md
+++ b/README.md
@@ -439,6 +439,8 @@ $ lines ~/.bashrc
 
 This works by passing the output of the glob to the function and then counting the number of arguments.
 
+**CAVEAT:** When the glob does not match anything (empty directory or no matching files) it is not expanded and the function returns `1`.
+
 **Example Function:**
 
 ```sh
@@ -575,6 +577,8 @@ done < "file"
 
 Don’t use `ls`.
 
+**CAVEAT:** When the glob does not match anything (empty directory or no matching files) the variable will contain the unexpanded glob.
+
 ```shell
 # Greedy example.
 for file in *; do