From dd55d5d53c394edb65d392f77087049540568997 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 7 Aug 2017 01:53:17 +0200
Subject: [PATCH] script: make -t independent of scriptreplay

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 NOFORK_NOEXEC.lst         |  4 ++--
 util-linux/script.c       | 22 +++++++++++++++-------
 util-linux/scriptreplay.c |  3 +--
 3 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/NOFORK_NOEXEC.lst b/NOFORK_NOEXEC.lst
index ac04f75da..21f09728d 100644
--- a/NOFORK_NOEXEC.lst
+++ b/NOFORK_NOEXEC.lst
@@ -299,8 +299,8 @@ runlevel - noexec. can be nofork if "endutxent()" is called unconditionally, but
 runsv - daemon
 runsvdir - daemon
 rx - runner
-script
-scriptreplay
+script - longterm: pumps script output from slave pty
+scriptreplay - longterm: plays back "script" saved output, sleeping as necessary.
 sed - runner
 sendmail - runner
 seq - noexec. runner
diff --git a/util-linux/script.c b/util-linux/script.c
index 9eebb51a4..6e8094312 100644
--- a/util-linux/script.c
+++ b/util-linux/script.c
@@ -21,15 +21,23 @@
 //kbuild:lib-$(CONFIG_SCRIPT) += script.o
 
 //usage:#define script_trivial_usage
-//usage:       "[-afq" IF_SCRIPTREPLAY("t") "] [-c PROG] [OUTFILE]"
+//usage:       "[-afqt] [-c PROG] [OUTFILE]"
 //usage:#define script_full_usage "\n\n"
 //usage:       "	-a	Append output"
 //usage:     "\n	-c PROG	Run PROG, not shell"
 //usage:     "\n	-f	Flush output after each write"
 //usage:     "\n	-q	Quiet"
-//usage:	IF_SCRIPTREPLAY(
 //usage:     "\n	-t	Send timing to stderr"
-//usage:	)
+
+//util-linux-2.28:
+//-t[FILE]
+//-e: return exit code of the child
+
+//FYI (reported as bbox bug #2749):
+// > script -q -c 'echo -e -n "1\n2\n3\n"' /dev/null </dev/null >123.txt
+// > The output file on full-blown ubuntu system contains 6 bytes.
+// > Output on Busybox system (arm-linux) contains extra '\r' byte in each line.
+//however, in my test, "script" from util-linux-2.28 seems to also add '\r' bytes.
 
 #include "libbb.h"
 #include "common_bufsiz.h"
@@ -64,14 +72,14 @@ int script_main(int argc UNUSED_PARAM, char **argv)
 		"command\0" Required_argument "c"
 		"flush\0"   No_argument       "f"
 		"quiet\0"   No_argument       "q"
-		IF_SCRIPTREPLAY("timing\0" No_argument "t")
+		"timing\0"  No_argument       "t"
 		;
 
 	applet_long_options = getopt_longopts;
 #endif
 
 	opt_complementary = "?1"; /* max one arg */
-	opt = getopt32(argv, "ac:fq" IF_SCRIPTREPLAY("t") , &shell_arg);
+	opt = getopt32(argv, "ac:fqt", &shell_arg);
 	//argc -= optind;
 	argv += optind;
 	if (argv[0]) {
@@ -120,7 +128,7 @@ int script_main(int argc UNUSED_PARAM, char **argv)
 		/* parent */
 		struct pollfd pfd[2];
 		int outfd, count, loop;
-		double oldtime = ENABLE_SCRIPTREPLAY ? time(NULL) : 0;
+		double oldtime = time(NULL);
 		smallint fd_count = 2;
 #define buf bb_common_bufsiz1
 		setup_common_bufsiz();
@@ -151,7 +159,7 @@ int script_main(int argc UNUSED_PARAM, char **argv)
 					goto restore;
 				}
 				if (count > 0) {
-					if (ENABLE_SCRIPTREPLAY && (opt & OPT_t)) {
+					if (opt & OPT_t) {
 						struct timeval tv;
 						double newtime;
 
diff --git a/util-linux/scriptreplay.c b/util-linux/scriptreplay.c
index 7e9850103..e3083ab93 100644
--- a/util-linux/scriptreplay.c
+++ b/util-linux/scriptreplay.c
@@ -5,7 +5,6 @@
  * pascal.bellard@ads-lu.com
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
- *
  */
 //config:config SCRIPTREPLAY
 //config:	bool "scriptreplay (2.6 kb)"
@@ -19,7 +18,7 @@
 //kbuild:lib-$(CONFIG_SCRIPTREPLAY) += scriptreplay.o
 
 //usage:#define scriptreplay_trivial_usage
-//usage:       "timingfile [typescript [divisor]]"
+//usage:       "TIMINGFILE [TYPESCRIPT [DIVISOR]]"
 //usage:#define scriptreplay_full_usage "\n\n"
 //usage:       "Play back typescripts, using timing information"