From d756b25f07d665f660b519f4aeddd6d96aefd134 Mon Sep 17 00:00:00 2001
From: jcs <jcs@openbsd.org>
Date: Fri, 22 Mar 2024 19:22:23 +0000
Subject: [PATCH] add "-V none" to prevent making any backups

from FreeBSD

ok bluhm deraadt
---
 usr.bin/patch/backupfile.c |  6 +++---
 usr.bin/patch/patch.1      | 12 +++++++-----
 usr.bin/patch/patch.c      | 11 +++++++----
 3 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/usr.bin/patch/backupfile.c b/usr.bin/patch/backupfile.c
index ed0767762e0..3197d730359 100644
--- a/usr.bin/patch/backupfile.c
+++ b/usr.bin/patch/backupfile.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: backupfile.c,v 1.22 2020/10/12 13:58:27 naddy Exp $	*/
+/*	$OpenBSD: backupfile.c,v 1.23 2024/03/22 19:22:23 jcs Exp $	*/
 
 /*
  * backupfile.c -- make Emacs style backup file names Copyright (C) 1990 Free
@@ -220,11 +220,11 @@ invalid_arg(const char *kind, const char *value, int problem)
 }
 
 static const char *backup_args[] = {
-	"never", "simple", "nil", "existing", "t", "numbered", 0
+	"none", "never", "simple", "nil", "existing", "t", "numbered", 0
 };
 
 static enum backup_type backup_types[] = {
-	simple, simple, numbered_existing,
+	none, simple, simple, numbered_existing,
 	numbered_existing, numbered, numbered
 };
 
diff --git a/usr.bin/patch/patch.1 b/usr.bin/patch/patch.1
index f88192f4add..d16d72850a3 100644
--- a/usr.bin/patch/patch.1
+++ b/usr.bin/patch/patch.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: patch.1,v 1.36 2022/03/31 17:27:26 naddy Exp $
+.\"	$OpenBSD: patch.1,v 1.37 2024/03/22 19:22:23 jcs Exp $
 .\" Copyright 1986, Larry Wall
 .\"
 .\" Redistribution and use in source and binary forms, with or without
@@ -19,7 +19,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: March 31 2022 $
+.Dd $Mdocdate: March 22 2024 $
 .Dt PATCH 1
 .Os
 .Sh NAME
@@ -37,7 +37,7 @@
 .Op Fl o Ar out-file
 .Op Fl p Ar strip-count
 .Op Fl r Ar rej-name
-.Op Fl V Cm t | nil | never
+.Op Fl V Cm t | nil | never | none
 .Op Fl x Ar number
 .Op Fl z Ar backup-ext
 .Op Fl Fl posix
@@ -289,8 +289,8 @@ Forces
 .Nm
 to interpret the patch file as a unified context diff (a unidiff).
 .It Xo
-.Fl V Cm t | nil | never ,
-.Fl Fl version-control Cm t | nil | never
+.Fl V Cm t | nil | never | none ,
+.Fl Fl version-control Cm t | nil | never | none
 .Xc
 Causes the next argument to be interpreted as a method for creating
 backup file names.
@@ -321,6 +321,8 @@ Make numbered backups of files that already have them,
 simple backups of the others.
 .It Cm never , simple
 Always make simple backups.
+.It Cm none
+Do not make backups.
 .El
 .It Fl v , Fl Fl version
 Causes
diff --git a/usr.bin/patch/patch.c b/usr.bin/patch/patch.c
index 1e926d1b6a5..96da0572381 100644
--- a/usr.bin/patch/patch.c
+++ b/usr.bin/patch/patch.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: patch.c,v 1.75 2023/10/25 20:05:43 bluhm Exp $	*/
+/*	$OpenBSD: patch.c,v 1.76 2024/03/22 19:22:23 jcs Exp $	*/
 
 /*
  * patch - a program to apply diffs to original files
@@ -109,6 +109,8 @@ static bool	remove_empty_files = false;
 /* true if -R was specified on command line.  */
 static bool	reverse_flag_specified = false;
 
+static bool	Vflag = false;
+
 /* buffer holding the name of the rejected patch file. */
 static char	rejname[PATH_MAX];
 
@@ -255,7 +257,7 @@ main(int argc, char *argv[])
 		my_exit(2);
 	}
 
-	if (backup_type == none) {
+	if (!Vflag) {
 		if ((v = getenv("PATCH_VERSION_CONTROL")) == NULL)
 			v = getenv("VERSION_CONTROL");
 		if (v != NULL || !posix)
@@ -641,6 +643,7 @@ get_some_switches(void)
 			break;
 		case 'V':
 			backup_type = get_version(optarg);
+			Vflag = true;
 			break;
 #ifdef DEBUGGING
 		case 'x':
@@ -677,8 +680,8 @@ usage(void)
 	fprintf(stderr,
 "usage: patch [-bCcEeflNnRstuv] [-B backup-prefix] [-D symbol] [-d directory]\n"
 "             [-F max-fuzz] [-i patchfile] [-o out-file] [-p strip-count]\n"
-"             [-r rej-name] [-V t | nil | never] [-x number] [-z backup-ext]\n"
-"             [--posix] [origfile [patchfile]]\n"
+"             [-r rej-name] [-V t | nil | never | none] [-x number]\n"
+"             [-z backup-ext] [--posix] [origfile [patchfile]]\n"
 "       patch <patchfile\n");
 	my_exit(2);
 }
-- 
2.20.1