From de0b6603e34612dd4bef8cc83c71fddb477e7b35 Mon Sep 17 00:00:00 2001
From: Simon Michael <simon@joyful.com>
Date: Thu, 20 Nov 2025 12:25:43 -1000
Subject: [PATCH] ;bin: hledger-check-buynothing

---
 bin/README.md                |  5 +++++
 bin/hledger-check-buynothing | 14 ++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100755 bin/hledger-check-buynothing

diff --git a/bin/README.md b/bin/README.md
index 12072bd91..f15ddd8ba 100644
--- a/bin/README.md
+++ b/bin/README.md
@@ -280,6 +280,11 @@ $ hledger bar -v 1 -f $TIMELOG -D                 # daily hours, with numbers
 ```
 (or with hledger <1.50: `hledger bar -- ...`)
 
+### hledger-check-buynothing
+
+[`hledger-check-buynothing`](https://github.com/simonmichael/hledger/blob/master/bin/hledger-check-buynothing)
+checks for no activity in Expense accounts on Buy Nothing Day (or other period).
+
 ### hledger-git
 
 [`hledger-git`](https://github.com/simonmichael/hledger/blob/master/bin/hledger-git)
diff --git a/bin/hledger-check-buynothing b/bin/hledger-check-buynothing
new file mode 100755
index 000000000..148fec498
--- /dev/null
+++ b/bin/hledger-check-buynothing
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+# hledger check-buynothing [-p PERIOD] [OTHERHLEDGERARGS]
+# Check for no activity in Expense accounts on Buy Nothing Day (November 28th).
+#
+# You can specify a different date or period with -p.
+# You can add other options/arguments to refine the query.
+
+txns=$(hledger reg type:x -p 11/28 "$@")
+if [[ ! "$txns" == "" ]]
+then
+    echo "Buy Nothing failure!"
+    echo "$txns"
+    exit 1
+fi