From db3f3501151c012751012659e149a7f80e4efd54 Mon Sep 17 00:00:00 2001
From: Zach van Rijn <me@zv.io>
Date: Fri, 7 Apr 2023 10:44:57 -0700
Subject: system/diffutils: add patch for 'diff -D' regression. fixes #983,
 #984.

---
 system/diffutils/APKBUILD                          |  6 +-
 .../diff-fix-bug-where-D-does-not-work.patch       | 72 ++++++++++++++++++++++
 2 files changed, 76 insertions(+), 2 deletions(-)
 create mode 100644 system/diffutils/diff-fix-bug-where-D-does-not-work.patch

diff --git a/system/diffutils/APKBUILD b/system/diffutils/APKBUILD
index f7fd123c4..5dc4fd585 100644
--- a/system/diffutils/APKBUILD
+++ b/system/diffutils/APKBUILD
@@ -1,7 +1,7 @@
 # Maintainer: Zach van Rijn <me@zv.io>
 pkgname=diffutils
 pkgver=3.9
-pkgrel=0
+pkgrel=1
 pkgdesc="Utility programs used for creating patch files"
 url="https://www.gnu.org/software/diffutils/"
 arch="all"
@@ -12,6 +12,7 @@ subpackages="$pkgname-doc $pkgname-lang"
 source="https://ftp.gnu.org/pub/gnu/$pkgname/$pkgname-$pkgver.tar.xz
 	disable-mbrtowc-test.patch
 	gnulib-tests-dont-require-gpg-passphrase.patch
+	diff-fix-bug-where-D-does-not-work.patch
 	"
 
 build() {
@@ -37,4 +38,5 @@ package() {
 
 sha512sums="d43280cb1cb2615a8867d971467eb9a3fa037fe9a411028068036f733dab42b10d42767093cea4de71e62b2659a3ec73bd7d1a8f251befd49587e32802682d0f  diffutils-3.9.tar.xz
 079d04f48fa5f5fd57eca8ba9ddefcdbb9e42a26dba7ca9b0a6f3f391112aa5ce34f0a32a931432f0ef0cc3345cc97de8310660cd05df9b30c38609440a729ee  disable-mbrtowc-test.patch
-bf78ccb22f9bcc7bb69414e19075233369c4373210a3f686b459ba37a0167ed130bd03b2d18440e04b773e5131a19006482a0ed8a1e2344ed4e869778c843f95  gnulib-tests-dont-require-gpg-passphrase.patch"
+bf78ccb22f9bcc7bb69414e19075233369c4373210a3f686b459ba37a0167ed130bd03b2d18440e04b773e5131a19006482a0ed8a1e2344ed4e869778c843f95  gnulib-tests-dont-require-gpg-passphrase.patch
+9d495b74f9bd5eb7fbfcc487f22e0202406eb1db47c6624fc3bcc2a9971587fcd43a9d2b2ff73950863501e1aa1846abc41bb0fba53069e01fa96bddb2c7db72  diff-fix-bug-where-D-does-not-work.patch"
diff --git a/system/diffutils/diff-fix-bug-where-D-does-not-work.patch b/system/diffutils/diff-fix-bug-where-D-does-not-work.patch
new file mode 100644
index 000000000..fa547efd8
--- /dev/null
+++ b/system/diffutils/diff-fix-bug-where-D-does-not-work.patch
@@ -0,0 +1,72 @@
+This patch differs from upstream in the following way:
+
+  * It does not add the 'ifdef' regression test.
+
+Justification:
+
+  * Adding unnecessary dependencies (autotools) is undesirable;
+
+  * Attempting to 'autoreconf -i' (due to touched 'Makefile.am')
+    does not work in the current environment, failing with:
+
+    configure:7925: error: possibly undefined macro: gl_ANYTHREADLIB_EARLY
+    ...
+    configure:13623: error: possibly undefined macro: gl_PTHREADLIB
+    configure:13708: error: possibly undefined macro: gl_WEAK_SYMBOLS
+    autoreconf: error: /usr/bin/autoconf failed with exit status: 1
+
+  * The next diffutils release tarball should be usable.
+
+From ba08fbbb0ca5da455bf695236c57bc50e7faed50 Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Fri, 10 Feb 2023 15:33:40 -0800
+Subject: diff: fix bug where -D does not work
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Problem reported by Robert Webb (bug#61193).
+* NEWS: Mention this.
+* src/diff.c (main): Omit stray ‘sizeof’.
+* tests/ifdef: New test.
+* tests/Makefile.am (TESTS): Add it.
+---
+ NEWS              |  5 +++++
+ src/diff.c        |  2 +-
+ tests/Makefile.am |  1 +
+ tests/ifdef       | 37 +++++++++++++++++++++++++++++++++++++
+ 4 files changed, 44 insertions(+), 1 deletion(-)
+ create mode 100755 tests/ifdef
+
+diff --git a/NEWS b/NEWS
+index ad9c6cc..f146730 100644
+--- a/NEWS
++++ b/NEWS
+@@ -2,6 +2,11 @@ GNU diffutils NEWS                                    -*- outline -*-
+ 
+ * Noteworthy changes in release ?.? (????-??-??) [?]
+ 
++** Bug fixes
++
++  diff -D no longer fails to output #ifndef lines.
++  [bug#61193 introduced in 3.9]
++
+ 
+ * Noteworthy changes in release 3.9 (2023-01-15) [stable]
+ 
+diff --git a/src/diff.c b/src/diff.c
+index dd6f63b..2b4834f 100644
+--- a/src/diff.c
++++ b/src/diff.c
+@@ -416,7 +416,7 @@ main (int argc, char **argv)
+ 	    char *base = b;
+ 	    int changes = 0;
+ 
+-	    for (i = 0; i < sizeof sizeof C_ifdef_group_formats; i++)
++	    for (i = 0; i < sizeof C_ifdef_group_formats; i++)
+ 	      {
+ 		char ch = C_ifdef_group_formats[i];
+ 		switch (ch)
+-- 
+cgit v1.1
+
-- 
cgit v1.2.3-60-g2f50