Adding upstream version 5.1.upstream/5.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 884 insertions, 0 deletions

diff --git a/builtins/complete.def b/builtins/complete.def
new file mode 100644
index 0000000..28a9ec2
--- /dev/null
+++ b/builtins/complete.def
@@ -0,0 +1,884 @@
+This file is complete.def, from which is created complete.c.
+It implements the builtins "complete", "compgen", and "compopt" in Bash.
+
+Copyright (C) 1999-2020 Free Software Foundation, Inc.
+
+This file is part of GNU Bash, the Bourne Again SHell.
+
+Bash is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Bash is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+
+$PRODUCES complete.c
+
+$BUILTIN complete
+$DEPENDS_ON PROGRAMMABLE_COMPLETION
+$FUNCTION complete_builtin
+$SHORT_DOC complete [-abcdefgjksuv] [-pr] [-DEI] [-o option] [-A action] [-G globpat] [-W wordlist] [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [name ...]
+Specify how arguments are to be completed by Readline.
+
+For each NAME, specify how arguments are to be completed.  If no options
+are supplied, existing completion specifications are printed in a way that
+allows them to be reused as input.
+
+Options:
+  -p	print existing completion specifications in a reusable format
+  -r	remove a completion specification for each NAME, or, if no
+		NAMEs are supplied, all completion specifications
+  -D	apply the completions and actions as the default for commands
+		without any specific completion defined
+  -E	apply the completions and actions to "empty" commands --
+		completion attempted on a blank line
+  -I	apply the completions and actions to the initial (usually the
+		command) word
+
+When completion is attempted, the actions are applied in the order the
+uppercase-letter options are listed above. If multiple options are supplied,
+the -D option takes precedence over -E, and both take precedence over -I.
+
+Exit Status:
+Returns success unless an invalid option is supplied or an error occurs.
+$END
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include "../bashtypes.h"
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#include "../bashansi.h"
+#include "../bashintl.h"
+
+#include "../shell.h"
+#include "../builtins.h"
+#include "../pcomplete.h"
+#include "../bashline.h"
+
+#include "common.h"
+#include "bashgetopt.h"
+
+#include <readline/readline.h>
+
+#define STRDUP(x)       ((x) ? savestring (x) : (char *)NULL)
+
+/* Structure containing all the non-action (binary) options; filled in by
+   build_actions(). */
+struct _optflags {
+  int pflag;
+  int rflag;
+  int Dflag;
+  int Eflag;
+  int Iflag;
+};
+
+static int find_compact PARAMS((char *));
+static int find_compopt PARAMS((char *));
+
+static int build_actions PARAMS((WORD_LIST *, struct _optflags *, unsigned long *, unsigned long *));
+
+static int remove_cmd_completions PARAMS((WORD_LIST *));
+
+static int print_one_completion PARAMS((char *, COMPSPEC *));
+static int print_compitem PARAMS((BUCKET_CONTENTS *));
+static void print_compopts PARAMS((const char *, COMPSPEC *, int));
+static void print_all_completions PARAMS((void));
+static int print_cmd_completions PARAMS((WORD_LIST *));
+
+static void print_compoptions PARAMS((unsigned long, int));
+static void print_compactions PARAMS((unsigned long));
+static void print_arg PARAMS((const char *, const char *, int));
+static void print_cmd_name PARAMS((const char *));
+
+static char *Garg, *Warg, *Parg, *Sarg, *Xarg, *Farg, *Carg;
+
+static const struct _compacts {
+  const char * const actname;
+  unsigned long actflag;
+  int actopt;
+} compacts[] = {
+  { "alias",     CA_ALIAS,     'a' },
+  { "arrayvar",  CA_ARRAYVAR,   0 },
+  { "binding",   CA_BINDING,    0 },
+  { "builtin",   CA_BUILTIN,   'b' },
+  { "command",   CA_COMMAND,   'c' },
+  { "directory", CA_DIRECTORY, 'd' },
+  { "disabled",  CA_DISABLED,   0 },
+  { "enabled",   CA_ENABLED,    0 },
+  { "export",    CA_EXPORT,    'e' },
+  { "file",      CA_FILE,      'f' },
+  { "function",  CA_FUNCTION,   0 },
+  { "helptopic", CA_HELPTOPIC,  0 },
+  { "hostname",  CA_HOSTNAME,   0 },
+  { "group",     CA_GROUP,     'g' },
+  { "job",       CA_JOB,       'j' },
+  { "keyword",   CA_KEYWORD,   'k' },
+  { "running",   CA_RUNNING,    0 },
+  { "service",   CA_SERVICE,   's' },
+  { "setopt",    CA_SETOPT,     0 },
+  { "shopt",     CA_SHOPT,      0 },
+  { "signal",    CA_SIGNAL,     0 },
+  { "stopped",   CA_STOPPED,    0 },
+  { "user",      CA_USER,      'u' },
+  { "variable",  CA_VARIABLE,  'v' },
+  { (char *)NULL, 0, 0 },
+};
+
+/* This should be a STRING_INT_ALIST */
+static const struct _compopt {
+  const char * const optname;
+  unsigned long optflag;
+} compopts[] = {
+  { "bashdefault", COPT_BASHDEFAULT },
+  { "default",	COPT_DEFAULT },
+  { "dirnames", COPT_DIRNAMES },
+  { "filenames",COPT_FILENAMES},
+  { "noquote", COPT_NOQUOTE },
+  { "nosort", COPT_NOSORT },
+  { "nospace",	COPT_NOSPACE },
+  { "plusdirs", COPT_PLUSDIRS },
+  { (char *)NULL, 0 },
+};
+
+static int
+find_compact (name)
+     char *name;
+{
+  register int i;
+
+  for (i = 0; compacts[i].actname; i++)
+    if (STREQ (name, compacts[i].actname))
+      return i;
+  return -1;
+}
+
+static int
+find_compopt (name)
+     char *name;
+{
+  register int i;
+
+  for (i = 0; compopts[i].optname; i++)
+    if (STREQ (name, compopts[i].optname))
+      return i;
+  return -1;
+}
+
+/* Build the actions and compspec options from the options specified in LIST.
+   ACTP is a pointer to an unsigned long in which to place the bitmap of
+   actions.  OPTP is a pointer to an unsigned long in which to place the
+   bitmap of compspec options (arguments to `-o').  PP, if non-null, gets 1
+   if -p is supplied; RP, if non-null, gets 1 if -r is supplied.
+   If either is null, the corresponding option generates an error.
+   This also sets variables corresponding to options that take arguments as
+   a side effect; the caller should ensure that those variables are set to
+   NULL before calling build_actions.  Return value:
+   	EX_USAGE = bad option
+   	EXECUTION_SUCCESS = some options supplied
+   	EXECUTION_FAILURE = no options supplied
+*/
+
+static int
+build_actions (list, flagp, actp, optp)
+     WORD_LIST *list;
+     struct _optflags *flagp;
+     unsigned long *actp, *optp;
+{
+  int opt, ind, opt_given;
+  unsigned long acts, copts;
+  WORD_DESC w;
+
+  acts = copts = (unsigned long)0L;
+  opt_given = 0;
+
+  reset_internal_getopt ();
+  while ((opt = internal_getopt (list, "abcdefgjko:prsuvA:G:W:P:S:X:F:C:DEI")) != -1)
+    {
+      opt_given = 1;
+      switch (opt)
+	{
+	case 'r':
+	  if (flagp)
+	    {
+	      flagp->rflag = 1;
+	      break;
+	    }
+	  else
+	    {
+	      sh_invalidopt ("-r");
+	      builtin_usage ();
+	      return (EX_USAGE);
+	    }
+
+	case 'p':
+	  if (flagp)
+	    {
+	      flagp->pflag = 1;
+	      break;
+	    }
+	  else
+	    {
+	      sh_invalidopt ("-p");
+	      builtin_usage ();
+	      return (EX_USAGE);
+	    }
+
+	case 'a':
+	  acts |= CA_ALIAS;
+	  break;
+	case 'b':
+	  acts |= CA_BUILTIN;
+	  break;
+	case 'c':
+	  acts |= CA_COMMAND;
+	  break;
+	case 'd':
+	  acts |= CA_DIRECTORY;
+	  break;
+	case 'e':
+	  acts |= CA_EXPORT;
+	  break;
+	case 'f':
+	  acts |= CA_FILE;
+	  break;
+	case 'g':
+	  acts |= CA_GROUP;
+	  break;
+	case 'j':
+	  acts |= CA_JOB;
+	  break;
+	case 'k':
+	  acts |= CA_KEYWORD;
+	  break;
+	case 's':
+	  acts |= CA_SERVICE;
+	  break;
+	case 'u':
+	  acts |= CA_USER;
+	  break;
+	case 'v':
+	  acts |= CA_VARIABLE;
+	  break;
+	case 'o':
+	  ind = find_compopt (list_optarg);
+	  if (ind < 0)
+	    {
+	      sh_invalidoptname (list_optarg);
+	      return (EX_USAGE);
+	    }
+	  copts |= compopts[ind].optflag;
+	  break;
+	case 'A':
+	  ind = find_compact (list_optarg);
+	  if (ind < 0)
+	    {
+	      builtin_error (_("%s: invalid action name"), list_optarg);
+	      return (EX_USAGE);
+	    }
+	  acts |= compacts[ind].actflag;
+	  break;
+	case 'C':
+	  Carg = list_optarg;
+	  break;
+	case 'D':
+	  if (flagp)
+	    {
+	      flagp->Dflag = 1;
+	      break;
+	    }
+	  else
+	    {
+	      sh_invalidopt ("-D");
+	      builtin_usage ();
+	      return (EX_USAGE);
+	    }
+	case 'E':
+	  if (flagp)
+	    {
+	      flagp->Eflag = 1;
+	      break;
+	    }
+	  else
+	    {
+	      sh_invalidopt ("-E");
+	      builtin_usage ();
+	      return (EX_USAGE);
+	    }
+	case 'I':
+	  if (flagp)
+	    {
+	      flagp->Iflag = 1;
+	      break;
+	    }
+	  else
+	    {
+	      sh_invalidopt ("-I");
+	      builtin_usage ();
+	      return (EX_USAGE);
+	    }
+	case 'F':
+	  w.word = Farg = list_optarg;
+	  w.flags = 0;
+	  if (check_identifier (&w, posixly_correct) == 0 || strpbrk (Farg, shell_break_chars) != 0)
+	    {
+	      sh_invalidid (Farg);
+	      return (EX_USAGE);
+	    }
+	  break;
+	case 'G':
+	  Garg = list_optarg;
+	  break;
+	case 'P':
+	  Parg = list_optarg;
+	  break;
+	case 'S':
+	  Sarg = list_optarg;
+	  break;
+	case 'W':
+	  Warg = list_optarg;
+	  break;
+	case 'X':
+	  Xarg = list_optarg;
+	  break;
+	CASE_HELPOPT;
+	default:
+	  builtin_usage ();
+	  return (EX_USAGE);
+	}
+    }
+
+  *actp = acts;
+  *optp = copts;
+
+  return (opt_given ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
+}
+
+/* Add, remove, and display completion specifiers. */
+int
+complete_builtin (list)
+     WORD_LIST *list;
+{
+  int opt_given, rval;
+  unsigned long acts, copts;
+  COMPSPEC *cs;
+  struct _optflags oflags;
+  WORD_LIST *l, *wl;
+
+  if (list == 0)
+    {
+      print_all_completions ();
+      return (EXECUTION_SUCCESS);
+    }
+
+  opt_given = oflags.pflag = oflags.rflag = 0;
+  oflags.Dflag = oflags.Eflag = oflags.Iflag = 0;
+
+  acts = copts = (unsigned long)0L;
+  Garg = Warg = Parg = Sarg = Xarg = Farg = Carg = (char *)NULL;
+  cs = (COMPSPEC *)NULL;
+
+  /* Build the actions from the arguments.  Also sets the [A-Z]arg variables
+     as a side effect if they are supplied as options. */
+  rval = build_actions (list, &oflags, &acts, &copts);
+  if (rval == EX_USAGE)
+    return (rval);
+  opt_given = rval != EXECUTION_FAILURE;
+
+  list = loptend;
+
+  if (oflags.Dflag)
+    wl = make_word_list (make_bare_word (DEFAULTCMD), (WORD_LIST *)NULL);
+  else if (oflags.Eflag)
+    wl = make_word_list (make_bare_word (EMPTYCMD), (WORD_LIST *)NULL);
+  else if (oflags.Iflag)
+    wl = make_word_list (make_bare_word (INITIALWORD), (WORD_LIST *)NULL);
+  else
+    wl = (WORD_LIST *)NULL;
+
+  /* -p overrides everything else */
+  if (oflags.pflag || (list == 0 && opt_given == 0))
+    {
+      if (wl)
+	{
+	  rval = print_cmd_completions (wl);
+	  dispose_words (wl);
+	  return rval;
+	}
+      else if (list == 0)
+	{
+	  print_all_completions ();
+	  return (EXECUTION_SUCCESS);
+	}
+      return (print_cmd_completions (list));
+    }
+
+  /* next, -r overrides everything else. */
+  if (oflags.rflag)
+    {
+      if (wl)
+	{
+	  rval = remove_cmd_completions (wl);
+	  dispose_words (wl);
+	  return rval;
+	}
+      else if (list == 0)
+	{
+	  progcomp_flush ();
+	  return (EXECUTION_SUCCESS);
+	}
+      return (remove_cmd_completions (list));
+    }
+
+  if (wl == 0 && list == 0 && opt_given)
+    {
+      builtin_usage ();
+      return (EX_USAGE);
+    }
+
+  /* If we get here, we need to build a compspec and add it for each
+     remaining argument. */
+  cs = compspec_create ();
+  cs->actions = acts;
+  cs->options = copts;
+
+  cs->globpat = STRDUP (Garg);
+  cs->words = STRDUP (Warg);
+  cs->prefix = STRDUP (Parg);
+  cs->suffix = STRDUP (Sarg);
+  cs->funcname = STRDUP (Farg);
+  cs->command = STRDUP (Carg);
+  cs->filterpat = STRDUP (Xarg);
+
+  for (rval = EXECUTION_SUCCESS, l = wl ? wl : list ; l; l = l->next)
+    {
+      /* Add CS as the compspec for the specified commands. */
+      if (progcomp_insert (l->word->word, cs) == 0)
+	rval = EXECUTION_FAILURE;
+    }
+
+  dispose_words (wl);
+  return (rval);
+}
+
+static int
+remove_cmd_completions (list)
+     WORD_LIST *list;
+{
+  WORD_LIST *l;
+  int ret;
+
+  for (ret = EXECUTION_SUCCESS, l = list; l; l = l->next)
+    {
+      if (progcomp_remove (l->word->word) == 0)
+	{
+	  builtin_error (_("%s: no completion specification"), l->word->word);
+	  ret = EXECUTION_FAILURE;
+	}
+    }
+  return ret;
+}
+
+static void
+print_compoptions (copts, full)
+     unsigned long copts;
+     int full;
+{
+  const struct _compopt *co;
+
+  for (co = compopts; co->optname; co++)
+    if (copts & co->optflag)
+      printf ("-o %s ", co->optname);
+    else if (full)
+      printf ("+o %s ", co->optname);
+}
+
+static void
+print_compactions (acts)
+     unsigned long acts;
+{
+  const struct _compacts *ca;
+
+  /* simple flags first */
+  for (ca = compacts; ca->actname; ca++)
+    if (ca->actopt && (acts & ca->actflag))
+      printf ("-%c ", ca->actopt);
+
+  /* then the rest of the actions */
+  for (ca = compacts; ca->actname; ca++)
+    if (ca->actopt == 0 && (acts & ca->actflag))
+      printf ("-A %s ", ca->actname);
+}
+
+static void
+print_arg (arg, flag, quote)
+     const char *arg, *flag;
+     int quote;
+{
+  char *x;
+
+  if (arg)
+    {
+      x = quote ? sh_single_quote (arg) : (char *)arg;
+      printf ("%s %s ", flag, x);
+      if (x != arg)
+	free (x);
+    }
+}
+
+static void
+print_cmd_name (cmd)
+     const char *cmd;
+{
+  if (STREQ (cmd, DEFAULTCMD))
+    printf ("-D");
+  else if (STREQ (cmd, EMPTYCMD))
+    printf ("-E");
+  else if (STREQ (cmd, INITIALWORD))
+    printf ("-I");
+  else if (*cmd == 0)		/* XXX - can this happen? */
+    printf ("''");
+  else
+    printf ("%s", cmd);
+}
+
+static int
+print_one_completion (cmd, cs)
+     char *cmd;
+     COMPSPEC *cs;
+{
+  printf ("complete ");
+
+  print_compoptions (cs->options, 0);
+  print_compactions (cs->actions);
+
+  /* now the rest of the arguments */
+
+  /* arguments that require quoting */
+  print_arg (cs->globpat, "-G", 1);
+  print_arg (cs->words, "-W", 1);
+  print_arg (cs->prefix, "-P", 1);
+  print_arg (cs->suffix, "-S", 1);
+  print_arg (cs->filterpat, "-X", 1);
+
+  print_arg (cs->command, "-C", 1);
+
+  /* simple arguments that don't require quoting */
+  print_arg (cs->funcname, "-F", 0);
+
+  print_cmd_name (cmd);
+  printf ("\n");
+
+  return (0);
+}
+
+static void
+print_compopts (cmd, cs, full)
+     const char *cmd;
+     COMPSPEC *cs;
+     int full;
+{
+  printf ("compopt ");
+
+  print_compoptions (cs->options, full);
+  print_cmd_name (cmd);
+
+  printf ("\n");
+}
+
+static int
+print_compitem (item)
+     BUCKET_CONTENTS *item;
+{
+  COMPSPEC *cs;
+  char *cmd;
+
+  cmd = item->key;
+  cs = (COMPSPEC *)item->data;
+
+  return (print_one_completion (cmd, cs));
+}
+
+static void
+print_all_completions ()
+{
+  progcomp_walk (print_compitem);
+}
+
+static int
+print_cmd_completions (list)
+     WORD_LIST *list;
+{
+  WORD_LIST *l;
+  COMPSPEC *cs;
+  int ret;
+
+  for (ret = EXECUTION_SUCCESS, l = list; l; l = l->next)
+    {
+      cs = progcomp_search (l->word->word);
+      if (cs)
+	print_one_completion (l->word->word, cs);
+      else
+	{
+	  builtin_error (_("%s: no completion specification"), l->word->word);
+	  ret = EXECUTION_FAILURE;
+	}
+    }
+
+  return (sh_chkwrite (ret));
+}
+
+$BUILTIN compgen
+$DEPENDS_ON PROGRAMMABLE_COMPLETION
+$FUNCTION compgen_builtin
+$SHORT_DOC compgen [-abcdefgjksuv] [-o option] [-A action] [-G globpat] [-W wordlist] [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [word]
+Display possible completions depending on the options.
+
+Intended to be used from within a shell function generating possible
+completions.  If the optional WORD argument is supplied, matches against
+WORD are generated.
+
+Exit Status:
+Returns success unless an invalid option is supplied or an error occurs.
+$END
+
+int
+compgen_builtin (list)
+     WORD_LIST *list;
+{
+  int rval;
+  unsigned long acts, copts;
+  COMPSPEC *cs;
+  STRINGLIST *sl;
+  char *word, **matches;
+  char *old_line;
+  int old_ind;
+
+  if (list == 0)
+    return (EXECUTION_SUCCESS);
+
+  acts = copts = (unsigned long)0L;
+  Garg = Warg = Parg = Sarg = Xarg = Farg = Carg = (char *)NULL;
+  cs = (COMPSPEC *)NULL;
+
+  /* Build the actions from the arguments.  Also sets the [A-Z]arg variables
+     as a side effect if they are supplied as options. */
+  rval = build_actions (list, (struct _optflags *)NULL, &acts, &copts);
+  if (rval == EX_USAGE)
+    return (rval);
+  if (rval == EXECUTION_FAILURE)
+    return (EXECUTION_SUCCESS);
+
+  list = loptend;
+
+  word = (list && list->word) ? list->word->word : "";
+
+  if (Farg)
+    builtin_error (_("warning: -F option may not work as you expect"));
+  if (Carg)
+    builtin_error (_("warning: -C option may not work as you expect"));
+
+  /* If we get here, we need to build a compspec and evaluate it. */
+  cs = compspec_create ();
+  cs->actions = acts;
+  cs->options = copts;
+  cs->refcount = 1;
+
+  cs->globpat = STRDUP (Garg);
+  cs->words = STRDUP (Warg);
+  cs->prefix = STRDUP (Parg);
+  cs->suffix = STRDUP (Sarg);
+  cs->funcname = STRDUP (Farg);
+  cs->command = STRDUP (Carg);
+  cs->filterpat = STRDUP (Xarg);
+
+  rval = EXECUTION_FAILURE;
+
+  /* probably don't have to save these, just being safe */
+  old_line = pcomp_line;
+  old_ind = pcomp_ind;
+  pcomp_line = (char *)NULL;
+  pcomp_ind = 0;
+  sl = gen_compspec_completions (cs, "compgen", word, 0, 0, 0);
+  pcomp_line = old_line;
+  pcomp_ind = old_ind;
+
+  /* If the compspec wants the bash default completions, temporarily
+     turn off programmable completion and call the bash completion code. */
+  if ((sl == 0 || sl->list_len == 0) && (copts & COPT_BASHDEFAULT))
+    {
+      matches = bash_default_completion (word, 0, 0, 0, 0);
+      sl = completions_to_stringlist (matches);
+      strvec_dispose (matches);
+    }
+
+  /* This isn't perfect, but it's the best we can do, given what readline
+     exports from its set of completion utility functions. */
+  if ((sl == 0 || sl->list_len == 0) && (copts & COPT_DEFAULT))
+    {
+      matches = rl_completion_matches (word, rl_filename_completion_function);
+      strlist_dispose (sl);
+      sl = completions_to_stringlist (matches);
+      strvec_dispose (matches);
+    }
+
+  if (sl)
+    {
+      if (sl->list && sl->list_len)
+	{
+	  rval = EXECUTION_SUCCESS;
+	  strlist_print (sl, (char *)NULL);
+	}
+      strlist_dispose (sl);
+    }
+
+  compspec_dispose (cs);
+  return (rval);
+}
+
+$BUILTIN compopt
+$DEPENDS_ON PROGRAMMABLE_COMPLETION
+$FUNCTION compopt_builtin
+$SHORT_DOC compopt [-o|+o option] [-DEI] [name ...]
+Modify or display completion options.
+
+Modify the completion options for each NAME, or, if no NAMEs are supplied,
+the completion currently being executed.  If no OPTIONs are given, print
+the completion options for each NAME or the current completion specification.
+
+Options:
+	-o option	Set completion option OPTION for each NAME
+	-D		Change options for the "default" command completion
+	-E		Change options for the "empty" command completion
+	-I		Change options for completion on the initial word
+
+Using `+o' instead of `-o' turns off the specified option.
+
+Arguments:
+
+Each NAME refers to a command for which a completion specification must
+have previously been defined using the `complete' builtin.  If no NAMEs
+are supplied, compopt must be called by a function currently generating
+completions, and the options for that currently-executing completion
+generator are modified.
+
+Exit Status:
+Returns success unless an invalid option is supplied or NAME does not
+have a completion specification defined.
+$END
+
+int
+compopt_builtin (list)
+     WORD_LIST *list;
+{
+  int opts_on, opts_off, *opts, opt, oind, ret, Dflag, Eflag, Iflag;
+  WORD_LIST *l, *wl;
+  COMPSPEC *cs;
+
+  opts_on = opts_off = Eflag = Dflag = Iflag = 0;
+  ret = EXECUTION_SUCCESS;
+
+  reset_internal_getopt ();
+  while ((opt = internal_getopt (list, "+o:DEI")) != -1)
+    {
+      opts = (list_opttype == '-') ? &opts_on : &opts_off;
+
+      switch (opt)
+	{
+	case 'o':
+	  oind = find_compopt (list_optarg);
+	  if (oind < 0)
+	    {
+	      sh_invalidoptname (list_optarg);
+	      return (EX_USAGE);
+	    }
+	  *opts |= compopts[oind].optflag;
+	  break;
+	case 'D':
+	  Dflag = 1;
+	  break;
+	case 'E':
+	  Eflag = 1;
+	  break;
+	case 'I':
+	  Iflag = 1;
+	  break;
+	CASE_HELPOPT;
+	default:
+	  builtin_usage ();
+	  return (EX_USAGE);
+	}
+    }
+  list = loptend;
+
+  if (Dflag)
+    wl = make_word_list (make_bare_word (DEFAULTCMD), (WORD_LIST *)NULL);
+  else if (Eflag)
+    wl = make_word_list (make_bare_word (EMPTYCMD), (WORD_LIST *)NULL);
+  else if (Iflag)
+    wl = make_word_list (make_bare_word (INITIALWORD), (WORD_LIST *)NULL);
+  else
+    wl = (WORD_LIST *)NULL;
+
+  if (list == 0 && wl == 0)
+    {
+      if (RL_ISSTATE (RL_STATE_COMPLETING) == 0 || pcomp_curcs == 0)
+	{
+	  builtin_error (_("not currently executing completion function"));
+	  return (EXECUTION_FAILURE);
+	}
+      cs = pcomp_curcs;
+
+      if (opts_on == 0 && opts_off == 0)
+	{
+	  print_compopts (pcomp_curcmd, cs, 1);
+          return (sh_chkwrite (ret));
+	}
+
+      /* Set the compspec options */
+      pcomp_set_compspec_options (cs, opts_on, 1);
+      pcomp_set_compspec_options (cs, opts_off, 0);
+
+      /* And change the readline variables the options control */
+      pcomp_set_readline_variables (opts_on, 1);
+      pcomp_set_readline_variables (opts_off, 0);
+
+      return (ret);
+    }
+
+  for (l = wl ? wl : list; l; l = l->next)
+    {
+      cs = progcomp_search (l->word->word);
+      if (cs == 0)
+	{
+	  builtin_error (_("%s: no completion specification"), l->word->word);
+	  ret = EXECUTION_FAILURE;
+	  continue;
+	}
+      if (opts_on == 0 && opts_off == 0)
+	{
+	  print_compopts (l->word->word, cs, 1);
+	  continue;			/* XXX -- fill in later */
+	}
+
+      /* Set the compspec options */
+      pcomp_set_compspec_options (cs, opts_on, 1);
+      pcomp_set_compspec_options (cs, opts_off, 0);
+    }
+
+  if (wl)
+    dispose_words (wl);
+
+  return (ret);
+}