From b4986929eaa634363a7718fb68801c7942c13202 Mon Sep 17 00:00:00 2001
From: Danie Palm <palm86@gmail.com>
Date: Fri, 15 May 2026 08:31:37 +0200
Subject: [PATCH] Sort fingerprints when writing .sobelow-skips

`Fingerprint.new_skips/0` returns `MapSet.to_list/1`, whose order is
implementation-defined. The previous write path joined the list as-is,
so re-running `--mark-skip-all` over the same set of findings could
produce different line orderings, churning the file in version
control. Sorting at the write boundary makes the on-disk output
stable.
---
 lib/sobelow.ex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sobelow.ex b/lib/sobelow.ex
index e7860564..ff5fe27e 100644
--- a/lib/sobelow.ex
+++ b/lib/sobelow.ex
@@ -476,7 +476,7 @@ defmodule Sobelow do
 
       fingerprints ->
         {:ok, iofile} = :file.open(cfile, [:append])
-        fingerprints = Enum.join(fingerprints, "\n")
+        fingerprints = fingerprints |> Enum.sort() |> Enum.join("\n")
         :file.write(iofile, ["\n", fingerprints])
         :file.close(iofile)
     end