test: make [ and [[ forms individually selectable

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/test.c

@@ -27,19 +27,33 @@
 //config:	  returning an appropriate exit code. The bash shell
 //config:	  has test built in, ash can build it in optionally.
 //config:
+//config:config TEST1
+//config:	bool "test as ["
+//config:	default y
+//config:	help
+//config:	  Provide test command in the "[ EXPR ]" form
+//config:
+//config:config TEST2
+//config:	bool "test as [["
+//config:	default y
+//config:	help
+//config:	  Provide test command in the "[[ EXPR ]]" form
+//config:
 //config:config FEATURE_TEST_64
 //config:	bool "Extend test to 64 bit"
 //config:	default y
-//config:	depends on TEST || ASH_BUILTIN_TEST || HUSH
+//config:	depends on TEST || TEST1 || TEST2 || ASH_BUILTIN_TEST || HUSH
 //config:	help
 //config:	  Enable 64-bit support in test.
 
-//applet:IF_TEST(APPLET_NOFORK([,  test, BB_DIR_USR_BIN, BB_SUID_DROP, test))
-//applet:IF_TEST(APPLET_NOFORK([[, test, BB_DIR_USR_BIN, BB_SUID_DROP, test))
 //applet:IF_TEST(APPLET_NOFORK(test, test, BB_DIR_USR_BIN, BB_SUID_DROP, test))
+//applet:IF_TEST1(APPLET_NOFORK([,  test, BB_DIR_USR_BIN, BB_SUID_DROP, test))
+//applet:IF_TEST2(APPLET_NOFORK([[, test, BB_DIR_USR_BIN, BB_SUID_DROP, test))
 
 //kbuild:lib-$(CONFIG_TEST) += test.o test_ptr_hack.o
-//kbuild:lib-$(CONFIG_ASH) += test.o test_ptr_hack.o
+//kbuild:lib-$(CONFIG_TEST1) += test.o test_ptr_hack.o
+//kbuild:lib-$(CONFIG_TEST2) += test.o test_ptr_hack.o
+//kbuild:lib-$(CONFIG_ASH_BUILTIN_TEST) += test.o test_ptr_hack.o
 //kbuild:lib-$(CONFIG_HUSH) += test.o test_ptr_hack.o
 
 /* "test --help" is special-cased to ignore --help */
@@ -827,7 +841,9 @@ int test_main(int argc, char **argv)
 	const char *arg0;
 
 	arg0 = bb_basename(argv[0]);
-	if (arg0[0] == '[') {
+	if ((ENABLE_TEST1 || ENABLE_TEST2 || ENABLE_ASH_BUILTIN_TEST || ENABLE_HUSH)
+	 && (arg0[0] == '[')
+	) {
 		--argc;
 		if (!arg0[1]) { /* "[" ? */
 			if (NOT_LONE_CHAR(argv[argc], ']')) {

include/applets.h.sh

@@ -5,13 +5,17 @@
 
 # CONFIG_applet names
 grep ^IF_ applets.h | grep -v IF_FEATURE_ | sed 's/IF_\([A-Z0-9._-]*\)(.*/\1/' \
-| grep -v MODPROBE_SMALL | sed 's/BB_SYSCTL/SYSCTL/' \
+| grep -v MODPROBE_SMALL \
+| sed 's/BB_SYSCTL/SYSCTL/' \
+| sed 's/TEST1/[/' \
+| sed 's/TEST2/[[/' \
 | sort | uniq \
 >applets_APP1
 
 # command line applet names
 grep ^IF_ applets.h | sed -e's/ //g' -e's/.*(\([a-z[][^,]*\),.*/\1/' \
-| grep -v '^bash$' | grep -v '^sh$' \
+| grep -v '^bash$' \
+| grep -v '^sh$' \
 | tr a-z A-Z \
 | sort | uniq \
 >applets_APP2

shell/ash.c

@@ -9282,9 +9282,9 @@ static const struct builtincmd builtintab[] = {
 	{ BUILTIN_SPEC_REG      ":"       , truecmd    },
 #if ENABLE_ASH_BUILTIN_TEST
 	{ BUILTIN_REGULAR       "["       , testcmd    },
-#if ENABLE_ASH_BASH_COMPAT
+# if ENABLE_ASH_BASH_COMPAT
 	{ BUILTIN_REGULAR       "[["      , testcmd    },
-#endif
+# endif
 #endif
 #if ENABLE_ASH_ALIAS
 	{ BUILTIN_REG_ASSG      "alias"   , aliascmd   },