From 23f43f1abfa959baeb327cc6772dcac79abbb63a Mon Sep 17 00:00:00 2001
From: Andrew Clayton <a.clayton@nginx.com>
Date: Fri, 18 Jul 2025 19:20:46 +0100
Subject: [PATCH] Set git diff driver for C source code files.

Git can be told to apply language-specific rules when generating diffs.
Enable this for C source code files (*.c and *.h) so that function names
are printed right. Specifically, doing so prevents "git diff" from
mistakenly considering unindented goto labels as function names.

E.g. get

  @@ -10,7 +10,7 @@ int foo(void)

instead of

  @@ -10,7 +10,7 @@ again:

This has the same effect as adding

  [diff "default"]
      xfuncname = "^[[:alpha:]$_].*[^:]$"

to your git config file.

This makes use of the gitattributes(5) infrastructure.
---
 .gitattributes | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 .gitattributes

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 000000000..b786b7913
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.[ch]	diff=cpp