From e1b17fe9cfbb0d188d5677f9ca5b9a1de319b00c Mon Sep 17 00:00:00 2001
From: Casey Rodarmor <casey@rodarmor.com>
Date: Thu, 13 Jun 2024 14:41:19 -0700
Subject: [PATCH] Document shell expanded string defaults (#2153)

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

diff --git a/README.md b/README.md
index 27e0ba5..41adab6 100644
--- a/README.md
+++ b/README.md
@@ -1314,6 +1314,7 @@ foobar := x'~/$FOO/${BAR}'
 |------|-------------|
 | `$VAR` | value of environment variable `VAR` |
 | `${VAR}` | value of environment variable `VAR` |
+| `${VAR:-DEFAULT}` | value of environment variable `VAR`, or `DEFAULT` if `VAR` is not set |
 | Leading `~` | path to current user's home directory |
 | Leading `~USER` | path to `USER`'s home directory |