auto import from //depot/cupcake/@135843
diff --git a/sh/options.h b/sh/options.h
new file mode 100644
index 0000000..4cc7dbe
--- /dev/null
+++ b/sh/options.h
@@ -0,0 +1,131 @@
+/* $NetBSD: options.h,v 1.17 2003/08/07 09:05:36 agc Exp $ */
+
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)options.h 8.2 (Berkeley) 5/4/95
+ */
+
+struct shparam {
+ int nparam; /* # of positional parameters (without $0) */
+ unsigned char malloc; /* if parameter list dynamically allocated */
+ unsigned char reset; /* if getopts has been reset */
+ char **p; /* parameter list */
+ char **optnext; /* next parameter to be processed by getopts */
+ char *optptr; /* used by getopts */
+};
+
+
+struct optent {
+ const char *name; /* for set -o <name> */
+ const char letter; /* set [+/-]<letter> and $- */
+ const char opt_set; /* mutually exclusive option set */
+ char val; /* value of <letter>flag */
+};
+
+/* Those marked [U] are required by posix, but have no effect! */
+
+#ifdef DEFINE_OPTIONS
+#define DEF_OPTS(name, letter, opt_set) {name, letter, opt_set, 0},
+struct optent optlist[] = {
+#else
+#define DEF_OPTS(name, letter, opt_set)
+#endif
+#define DEF_OPT(name,letter) DEF_OPTS(name, letter, 0)
+
+DEF_OPT( "errexit", 'e' ) /* exit on error */
+#define eflag optlist[0].val
+DEF_OPT( "noglob", 'f' ) /* no pathname expansion */
+#define fflag optlist[1].val
+DEF_OPT( "ignoreeof", 'I' ) /* do not exit on EOF */
+#define Iflag optlist[2].val
+DEF_OPT( "interactive",'i' ) /* interactive shell */
+#define iflag optlist[3].val
+DEF_OPT( "monitor", 'm' ) /* job control */
+#define mflag optlist[4].val
+DEF_OPT( "noexec", 'n' ) /* [U] do not exec commands */
+#define nflag optlist[5].val
+DEF_OPT( "stdin", 's' ) /* read from stdin */
+#define sflag optlist[6].val
+DEF_OPT( "xtrace", 'x' ) /* trace after expansion */
+#define xflag optlist[7].val
+DEF_OPT( "verbose", 'v' ) /* trace read input */
+#define vflag optlist[8].val
+DEF_OPTS( "vi", 'V', 'V' ) /* vi style editing */
+#define Vflag optlist[9].val
+DEF_OPTS( "emacs", 'E', 'V' ) /* emacs style editing */
+#define Eflag optlist[10].val
+DEF_OPT( "noclobber", 'C' ) /* do not overwrite files with > */
+#define Cflag optlist[11].val
+DEF_OPT( "allexport", 'a' ) /* export all variables */
+#define aflag optlist[12].val
+DEF_OPT( "notify", 'b' ) /* [U] report completion of background jobs */
+#define bflag optlist[13].val
+DEF_OPT( "nounset", 'u' ) /* error expansion of unset variables */
+#define uflag optlist[14].val
+DEF_OPT( "quietprofile", 'q' )
+#define qflag optlist[15].val
+DEF_OPT( "nolog", 0 ) /* [U] no functon defs in command history */
+#define nolog optlist[16].val
+DEF_OPT( "cdprint", 0 ) /* always print result of cd */
+#define cdprint optlist[17].val
+#ifdef DEBUG
+DEF_OPT( "debug", 0 ) /* enable debug prints */
+#define debug optlist[18].val
+#endif
+
+#ifdef DEFINE_OPTIONS
+ { 0, 0, 0, 0 },
+};
+#define NOPTS (sizeof optlist / sizeof optlist[0] - 1)
+int sizeof_optlist = sizeof optlist;
+#else
+extern struct optent optlist[];
+extern int sizeof_optlist;
+#endif
+
+
+extern char *minusc; /* argument to -c option */
+extern char *arg0; /* $0 */
+extern struct shparam shellparam; /* $@ */
+extern char **argptr; /* argument list for builtin commands */
+extern char *optionarg; /* set by nextopt */
+extern char *optptr; /* used by nextopt */
+
+void procargs(int, char **);
+void optschanged(void);
+void setparam(char **);
+void freeparam(volatile struct shparam *);
+int shiftcmd(int, char **);
+int setcmd(int, char **);
+int getoptscmd(int, char **);
+int nextopt(const char *);
+void getoptsreset(const char *);