From 80d62c0096394dea7960c1d4fdd509c1dfe29c98 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Thu, 26 Mar 2026 09:23:52 +0000
Subject: CONTRIBUTING: Fix submitting changes deadlines

---
 CONTRIBUTING.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c0fefe38..7696578a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,6 +33,14 @@ Choose any one of:
 
 ## Submitting changes
 
+When fixing a bug, please write a regression test in a separate commit before
+your fix. Demonstrate that the regression test fails and that your fix lets it
+succeed. Obviously, the regression test must be reasonable, demonstrate a real
+issue (however minor), and must not itself contain hacks solely designed for
+the purposes of making the old code fail and the new one succeed.
+
+Choose any one of:
+
 * Open a [pull request on Codeberg](https://codeberg.org/lindenii/furgit/pulls)
 * [Send a patch](https://git-send-email.io) to
   [my public inbox](https://lists.sr.ht/~runxiyu/public-inbox)
-- 
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