Make it possible to select "sh" and "bash" aliases without selecting ash or hush

The same can be done for msh, but we are probably better off just deleting it
in a next versio or two.

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

1 files changed, 46 insertions, 49 deletions

diff --git a/shell/ash.c b/shell/ash.c
index b11f365..430e42a 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -29,14 +29,14 @@
 //config:config ASH_OPTIMIZE_FOR_SIZE
 //config:	bool "Optimize for size instead of speed"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Compile ash for reduced size at the price of speed.
 //config:
 //config:config ASH_INTERNAL_GLOB
 //config:	bool "Use internal glob() implementation"
 //config:	default y	# Y is bigger, but because of uclibc glob() bug, let Y be default for now
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Do not use glob() function from libc, use internal implementation.
 //config:	  Use this if you are getting "glob.h: No such file or directory"
@@ -45,7 +45,7 @@
 //config:config ASH_RANDOM_SUPPORT
 //config:	bool "Pseudorandom generator and $RANDOM variable"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable pseudorandom generator and dynamic variable "$RANDOM".
 //config:	  Each read of "$RANDOM" will generate a new pseudorandom value.
@@ -56,7 +56,7 @@
 //config:config ASH_EXPAND_PRMT
 //config:	bool "Expand prompt string"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  "PS#" may contain volatile content, such as backquote commands.
 //config:	  This option recreates the prompt string from the environment
@@ -65,70 +65,70 @@
 //config:config ASH_BASH_COMPAT
 //config:	bool "bash-compatible extensions"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable bash-compatible extensions.
 //config:
 //config:config ASH_IDLE_TIMEOUT
 //config:	bool "Idle timeout variable"
 //config:	default n
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enables bash-like auto-logout after $TMOUT seconds of idle time.
 //config:
 //config:config ASH_JOB_CONTROL
 //config:	bool "Job control"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable job control in the ash shell.
 //config:
 //config:config ASH_ALIAS
 //config:	bool "Alias support"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable alias support in the ash shell.
 //config:
 //config:config ASH_GETOPTS
 //config:	bool "Builtin getopt to parse positional parameters"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable support for getopts builtin in ash.
 //config:
 //config:config ASH_BUILTIN_ECHO
 //config:	bool "Builtin version of 'echo'"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable support for echo builtin in ash.
 //config:
 //config:config ASH_BUILTIN_PRINTF
 //config:	bool "Builtin version of 'printf'"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable support for printf builtin in ash.
 //config:
 //config:config ASH_BUILTIN_TEST
 //config:	bool "Builtin version of 'test'"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable support for test builtin in ash.
 //config:
 //config:config ASH_HELP
 //config:	bool "help builtin"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable help builtin in ash.
 //config:
 //config:config ASH_CMDCMD
 //config:	bool "'command' command to override shell builtins"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable support for the ash 'command' builtin, which allows
 //config:	  you to run the specified command with the specified arguments,
@@ -137,15 +137,17 @@
 //config:config ASH_MAIL
 //config:	bool "Check for new mail on interactive shells"
 //config:	default y
-//config:	depends on ASH
+//config:	depends on ASH || SH_IS_ASH || BASH_IS_ASH
 //config:	help
 //config:	  Enable "check for new mail" function in the ash shell.
 
 //applet:IF_ASH(APPLET(ash, BB_DIR_BIN, BB_SUID_DROP))
-//applet:IF_FEATURE_SH_IS_ASH(APPLET_ODDNAME(sh, ash, BB_DIR_BIN, BB_SUID_DROP, sh))
-//applet:IF_FEATURE_BASH_IS_ASH(APPLET_ODDNAME(bash, ash, BB_DIR_BIN, BB_SUID_DROP, bash))
+//applet:IF_SH_IS_ASH(APPLET_ODDNAME(sh, ash, BB_DIR_BIN, BB_SUID_DROP, ash))
+//applet:IF_BASH_IS_ASH(APPLET_ODDNAME(bash, ash, BB_DIR_BIN, BB_SUID_DROP, ash))
 
 //kbuild:lib-$(CONFIG_ASH) += ash.o ash_ptr_hack.o shell_common.o
+//kbuild:lib-$(CONFIG_SH_IS_ASH) += ash.o ash_ptr_hack.o shell_common.o
+//kbuild:lib-$(CONFIG_BASH_IS_ASH) += ash.o ash_ptr_hack.o shell_common.o
 //kbuild:lib-$(CONFIG_ASH_RANDOM_SUPPORT) += random.o
 
 /*
@@ -200,7 +202,7 @@
 
 #include "unicode.h"
 #include "shell_common.h"
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 # include "math.h"
 #endif
 #if ENABLE_ASH_RANDOM_SUPPORT
@@ -2144,6 +2146,7 @@ lookupvar(const char *name)
 	return NULL;
 }
 
+#if ENABLE_UNICODE_SUPPORT
 static void
 reinit_unicode_for_ash(void)
 {
@@ -2160,6 +2163,9 @@ reinit_unicode_for_ash(void)
 		reinit_unicode(s);
 	}
 }
+#else
+# define reinit_unicode_for_ash() ((void)0)
+#endif
 
 /*
  * Search the environment of a builtin command.
@@ -2741,7 +2747,7 @@ pwdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 
 #define USE_SIT_FUNCTION ENABLE_ASH_OPTIMIZE_FOR_SIZE
 
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 # define SIT_ITEM(a,b,c,d) (a | (b << 4) | (c << 8) | (d << 12))
 #else
 # define SIT_ITEM(a,b,c,d) (a | (b << 4) | (c << 8))
@@ -3129,7 +3135,7 @@ static const uint8_t syntax_index_table[] ALIGN1 = {
 	({ \
 		if ((c) < 0 || (c) > (PEOF + ENABLE_ASH_ALIAS)) \
 			bb_error_msg_and_die("line:%d c:%d", __LINE__, (c)); \
-		if ((syntax) < 0 || (syntax) > (2 + ENABLE_SH_MATH_SUPPORT)) \
+		if ((syntax) < 0 || (syntax) > (2 + ENABLE_FEATURE_SH_MATH)) \
 			bb_error_msg_and_die("line:%d c:%d", __LINE__, (c)); \
 		((S_I_T[syntax_index_table[c]] >> ((syntax)*4)) & 0xf); \
 	})
@@ -4487,7 +4493,7 @@ cmdputs(const char *s)
 		case CTLBACKQ:
 			str = "$(...)";
 			goto dostr;
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 		case CTLARI:
 			str = "$((";
 			goto dostr;
@@ -5547,7 +5553,7 @@ redirectsafe(union node *redir, int flags)
  * We have to deal with backquotes, shell variables, and file metacharacters.
  */
 
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 static arith_t
 ash_arith(const char *s)
 {
@@ -5635,7 +5641,7 @@ static struct arglist exparg;
 /*
  * Our own itoa().
  */
-#if !ENABLE_SH_MATH_SUPPORT
+#if !ENABLE_FEATURE_SH_MATH
 /* cvtnum() is used even if math support is off (to prepare $? values and such) */
 typedef long arith_t;
 # define ARITH_FMT "%ld"
@@ -6148,7 +6154,7 @@ expbackq(union node *cmd, int flag)
 		stackblock() + startloc));
 }
 
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 /*
  * Expand arithmetic expression.  Backup to start of expression,
  * evaluate, place result in (backed up) result, adjust string position.
@@ -6230,7 +6236,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
 		CTLESC,
 		CTLVAR,
 		CTLBACKQ,
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 		CTLENDARI,
 #endif
 		'\0'
@@ -6266,7 +6272,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
 		c = p[length];
 		if (c) {
 			if (!(c & 0x80)
-			IF_SH_MATH_SUPPORT(|| c == CTLENDARI)
+			IF_FEATURE_SH_MATH(|| c == CTLENDARI)
 			) {
 				/* c == '=' || c == ':' || c == CTLENDARI */
 				length++;
@@ -6346,7 +6352,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
 			expbackq(argbackq->n, flags | inquotes);
 			argbackq = argbackq->next;
 			goto start;
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 		case CTLENDARI:
 			p--;
 			expari(flags | inquotes);
@@ -9265,7 +9271,7 @@ static int helpcmd(int, char **) FAST_FUNC;
 #if MAX_HISTORY
 static int historycmd(int, char **) FAST_FUNC;
 #endif
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 static int letcmd(int, char **) FAST_FUNC;
 #endif
 static int readcmd(int, char **) FAST_FUNC;
@@ -9345,7 +9351,7 @@ static const struct builtincmd builtintab[] = {
 	{ BUILTIN_REGULAR       "jobs"    , jobscmd    },
 	{ BUILTIN_REGULAR       "kill"    , killcmd    },
 #endif
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 	{ BUILTIN_NOSPEC        "let"     , letcmd     },
 #endif
 	{ BUILTIN_ASSIGN        "local"   , localcmd   },
@@ -11394,13 +11400,13 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
 	smallint quotef;
 	smallint dblquote;
 	smallint oldstyle;
-	IF_SH_MATH_SUPPORT(smallint prevsyntax;) /* syntax before arithmetic */
+	IF_FEATURE_SH_MATH(smallint prevsyntax;) /* syntax before arithmetic */
 #if ENABLE_ASH_EXPAND_PRMT
 	smallint pssyntax;   /* we are expanding a prompt string */
 #endif
 	int varnest;         /* levels of variables expansion */
-	IF_SH_MATH_SUPPORT(int arinest;)    /* levels of arithmetic expansion */
-	IF_SH_MATH_SUPPORT(int parenlevel;) /* levels of parens in arithmetic */
+	IF_FEATURE_SH_MATH(int arinest;)    /* levels of arithmetic expansion */
+	IF_FEATURE_SH_MATH(int parenlevel;) /* levels of parens in arithmetic */
 	int dqvarnest;       /* levels of variables expansion within double quotes */
 
 	IF_ASH_BASH_COMPAT(smallint bash_dollar_squote = 0;)
@@ -11408,7 +11414,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
 	startlinno = g_parsefile->linno;
 	bqlist = NULL;
 	quotef = 0;
-	IF_SH_MATH_SUPPORT(prevsyntax = 0;)
+	IF_FEATURE_SH_MATH(prevsyntax = 0;)
 #if ENABLE_ASH_EXPAND_PRMT
 	pssyntax = (syntax == PSSYNTAX);
 	if (pssyntax)
@@ -11416,8 +11422,8 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
 #endif
 	dblquote = (syntax == DQSYNTAX);
 	varnest = 0;
-	IF_SH_MATH_SUPPORT(arinest = 0;)
-	IF_SH_MATH_SUPPORT(parenlevel = 0;)
+	IF_FEATURE_SH_MATH(arinest = 0;)
+	IF_FEATURE_SH_MATH(parenlevel = 0;)
 	dqvarnest = 0;
 
 	STARTSTACKSTR(out);
@@ -11524,7 +11530,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
 			}
 			USTPUTC(c, out);
 			break;
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 		case CLP:       /* '(' in arithmetic */
 			parenlevel++;
 			USTPUTC(c, out);
@@ -11575,7 +11581,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
 	} /* for (;;) */
  endword:
 
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 	if (syntax == ARISYNTAX)
 		raise_error_syntax("missing '))'");
 #endif
@@ -11754,7 +11760,7 @@ parsesub: {
 	} else if (c == '(') {
 		/* $(command) or $((arith)) */
 		if (pgetc_eatbnl() == '(') {
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 			PARSEARITH();
 #else
 			raise_error_syntax("you disabled math support for $((arith)) syntax");
@@ -12009,7 +12015,7 @@ parsebackq: {
 	goto parsebackq_newreturn;
 }
 
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 /*
  * Parse an arithmetic expansion (indicate start of one and set state)
  */
@@ -13046,7 +13052,7 @@ timescmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 	return 0;
 }
 
-#if ENABLE_SH_MATH_SUPPORT
+#if ENABLE_FEATURE_SH_MATH
 /*
  * The let builtin. Partially stolen from GNU Bash, the Bourne Again SHell.
  * Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
@@ -13301,15 +13307,6 @@ init(void)
 //usage:#define ash_full_usage "\n\n"
 //usage:	"Unix shell interpreter"
 
-//usage:#if ENABLE_FEATURE_SH_IS_ASH
-//usage:# define sh_trivial_usage ash_trivial_usage
-//usage:# define sh_full_usage    ash_full_usage
-//usage:#endif
-//usage:#if ENABLE_FEATURE_BASH_IS_ASH
-//usage:# define bash_trivial_usage ash_trivial_usage
-//usage:# define bash_full_usage    ash_full_usage
-//usage:#endif
-
 /*
  * Process the shell command line arguments.
  */