+
+$BUILTIN compopt
+$DEPENDS_ON PROGRAMMABLE_COMPLETION
+$FUNCTION compopt_builtin
+$SHORT_DOC compopt [-o|+o option] [name ...]
+Modify or display completion options.
+
+Modify the completion options for each NAME, or, if no NAMEs are supplied,
+the completion currently begin executed. If no OPTIONs are givenm, print
+the completion options for each NAME or the current completion specification.
+
+Options:
+ -o option Set completion option OPTION for each NAME
+
+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, Eflag;
+ WORD_LIST *l;
+ COMPSPEC *cs;
+
+ opts_on = opts_off = 0;
+ ret = EXECUTION_SUCCESS;
+
+ reset_internal_getopt ();
+ while ((opt = internal_getopt (list, "+o:")) != EOF)
+ {
+ 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;
+ default:
+ builtin_usage ();
+ return (EX_USAGE);
+ }
+ }
+ list = loptend;
+
+ if (list == 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 = 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);
+ }
+
+ return (ret);
+}