/*
 *	Command execution
 *	Copyright
 *		(C) 1992 Joseph H. Allen
 *
 *	This file is part of JOE (Joe's Own Editor)
 */
#define EXTERN_CMD_C
#include "config.h"
#include "types.h"

__RCSID("$MirOS: contrib/code/jupp/cmd.c,v 1.19 2017/12/02 02:07:25 tg Exp $");

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <string.h>

#include "b.h"
#include "bw.h"
#include "cmd.h"
#include "hash.h"
#include "help.h"
#include "kbd.h"
#include "macro.h"
#include "main.h"
#include "menu.h"
#include "path.h"
#include "poshist.h"
#include "pw.h"
#include "rc.h"
#include "tty.h"
#include "tw.h"
#include "ublock.h"
#include "uedit.h"
#include "uerror.h"
#include "ufile.h"
#include "uformat.h"
#include "uisrch.h"
#include "umath.h"
#include "undo.h"
#include "usearch.h"
#include "ushell.h"
#include "utag.h"
#include "utils.h"
#include "va.h"
#include "vs.h"
#include "utf8.h"
#include "w.h"

extern int marking;
extern int smode;
int dobeep = 0;
int uexecmd(BW *bw);

/* Command table */

int ubeep(BW *bw, int k)
{
	ttputc(7);
	return 0;
}

extern char main_context[];
static int do_keymap(BW *bw, unsigned char *s, void *object, int *notify)
{
	KMAP *new_kmap;

	if (notify)
		*notify = 1;
	if (!s || !*s || !(new_kmap = kmap_getcontext(s, 0)))
		return (-1);
	if (bw->o.context != (unsigned char *)main_context)
		free(bw->o.context);
	bw->o.context = strcmp((char *)s, main_context) ?
	    (unsigned char *)strdup((char *)s) : (unsigned char *)main_context;
	rmkbd(bw->parent->kbd);
	bw->parent->kbd = mkkbd(new_kmap);
	joe_snprintf_1((char *)msgbuf, JOE_MSGBUFSIZE, "New keymap: %s", s);
	msgnw(bw->parent, msgbuf);
	return (0);
}
static int ukeymap(BW *bw)
{
	if (wmkpw(bw->parent, US "Name of keymap to switch to: ", NULL,
	    do_keymap, NULL, NULL, utypebw, NULL, NULL, locale_map)) {
		return (0);
	}
	return (-1);
}

static int unop(void)
{
	return (0);
}

#if !WANT_FORK
static int
unommu(BW *bw) {
	msgnw(bw->parent, US "Sorry, not supported without MMU");
	return (-1);
}
#define ubknd	unommu
#define ubuild	unommu
#define urun	unommu
#endif

CMD cmds[] = {
	{US "abendjoe", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uabendjoe, NULL, 0, NULL},
	{US "abort", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uabort, NULL, 0, NULL},
	{US "abortbuf", TYPETW, uabortbuf, NULL, 0, NULL},
	{US "arg", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uarg, NULL, 0, NULL},
	{US "ask", TYPETW + TYPEPW, uask, NULL, 0, NULL},
	{US "backs", TYPETW + TYPEPW + ECHKXCOL + EFIXXCOL + EMINOR + EKILL + EMOD, ubacks, NULL, 1, US "delch"},
	{US "backsmenu", TYPEMENU, umbacks, NULL, 1, NULL},
	{US "backw", TYPETW + TYPEPW + ECHKXCOL + EFIXXCOL + EKILL + EMOD, ubackw, NULL, 1, US "delw"},
	{US "beep", TYPETW + TYPEPW + TYPEMENU + TYPEQW, ubeep, NULL, 0, NULL},
	{US "begin_marking", TYPETW + TYPEPW, ubegin_marking, NULL, 0, NULL},
	{US "bknd", TYPETW + TYPEPW, ubknd, NULL, 0, NULL},
	{US "bkwdc", TYPETW + TYPEPW, ubkwdc, NULL, 1, US "fwrdc"},
	{US "blkcpy", TYPETW + TYPEPW + EFIXXCOL + EMOD + EBLOCK, ublkcpy, NULL, 1, NULL},
	{US "blkdel", TYPETW + TYPEPW + EFIXXCOL + EKILL + EMOD + EBLOCK, ublkdel, NULL, 0, NULL},
	{US "blkmove", TYPETW + TYPEPW + EFIXXCOL + EMOD + EBLOCK, ublkmove, NULL, 0, NULL},
	{US "blksave", TYPETW + TYPEPW + EBLOCK, ublksave, NULL, 0, NULL},
	{US "bof", TYPETW + TYPEPW + EMOVE + EFIXXCOL, u_goto_bof, NULL, 0, NULL},
	{US "bofmenu", TYPEMENU, umbof, NULL, 0, NULL},
	{US "bol", TYPETW + TYPEPW + EFIXXCOL, u_goto_bol, NULL, 0, NULL},
	{US "bolmenu", TYPEMENU, umbol, NULL, 0, NULL},
	{US "bop", TYPETW + TYPEPW + EFIXXCOL, ubop, NULL, 1, US "eop"},
	{US "bos", TYPETW + TYPEPW + EMOVE, ubos, NULL, 0, NULL},
	{US "bufed", TYPETW, ubufed, NULL, 0, NULL},
	{US "build", TYPETW + TYPEPW, ubuild, NULL, 0, NULL},
	{US "byte", TYPETW + TYPEPW, ubyte, NULL, 0, NULL},
	{US "cancel", TYPETW + TYPEPW + TYPEMENU + TYPEQW, ucancel, NULL, 0, NULL},
	{US "center", TYPETW + TYPEPW + EFIXXCOL + EMOD, ucenter, NULL, 1, NULL},
	{US "col", TYPETW + TYPEPW, ucol, NULL, 0, NULL},
	{US "complete", TYPEPW + EMINOR + EMOD, ucmplt, NULL, 0, NULL},
	{US "copy", TYPETW + TYPEPW, ucopy, NULL, 0, NULL},
	{US "crawll", TYPETW + TYPEPW, ucrawll, NULL, 1, US "crawlr"},
	{US "crawlr", TYPETW + TYPEPW, ucrawlr, NULL, 1, US "crawll"},
	{US "ctrl", TYPETW + TYPEPW + EMOD, uctrl, NULL, 0, NULL},
	{US "delbol", TYPETW + TYPEPW + EFIXXCOL + EKILL + EMOD, udelbl, NULL, 1, US "deleol"},
	{US "delch", TYPETW + TYPEPW + ECHKXCOL + EFIXXCOL + EMINOR + EKILL + EMOD, udelch, NULL, 1, US "backs"},
	{US "deleol", TYPETW + TYPEPW + EKILL + EMOD, udelel, NULL, 1, US "delbol"},
	{US "dellin", TYPETW + TYPEPW + EFIXXCOL + EKILL + EMOD, udelln, NULL, 1, NULL},
	{US "delw", TYPETW + TYPEPW + EFIXXCOL + ECHKXCOL + EKILL + EMOD, u_word_delete, NULL, 1, US "backw"},
	{US "dnarw", TYPETW + TYPEPW + EMOVE, udnarw, NULL, 1, US "uparw"},
	{US "dnarwmenu", TYPEMENU, umdnarw, NULL, 1, US "uparwmenu"},
	{US "dnslide", TYPETW + TYPEPW + TYPEMENU + TYPEQW + EMOVE, udnslide, NULL, 1, US "upslide"},
	{US "drop", TYPETW + TYPEPW, udrop, NULL, 0, NULL},
	{US "dupw", TYPETW, uduptw, NULL, 0, NULL},
	{US "edit", TYPETW, uedit, NULL, 0, NULL},
	{US "eof", TYPETW + TYPEPW + EFIXXCOL + EMOVE, u_goto_eof, NULL, 0, NULL},
	{US "eofmenu", TYPEMENU, umeof, NULL, 0, NULL},
	{US "eol", TYPETW + TYPEPW + EFIXXCOL, u_goto_eol, NULL, 0, NULL},
	{US "eolmenu", TYPEMENU, umeol, NULL, 0, NULL},
	{US "eop", TYPETW + TYPEPW + EFIXXCOL, ueop, NULL, 1, US "bop"},
	{US "execmd", TYPETW + TYPEPW, uexecmd, NULL, 0, NULL},
	{US "explode", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uexpld, NULL, 0, NULL},
	{US "exsave", TYPETW + TYPEPW, uexsve, NULL, 0, NULL},
	{US "ffirst", TYPETW + TYPEPW, pffirst, NULL, 0, NULL},
	{US "filt", TYPETW + TYPEPW + EMOD + EBLOCK, ufilt, NULL, 0, NULL},
	{US "finish", TYPETW + TYPEPW + EMOD, ufinish, NULL, 1, NULL},
	{US "fmtblk", TYPETW + EMOD + EFIXXCOL + EBLOCK, ufmtblk, NULL, 1, NULL},
	{US "fnext", TYPETW + TYPEPW, pfnext, NULL, 1, NULL},
	{US "format", TYPETW + TYPEPW + EFIXXCOL + EMOD, uformat, NULL, 1, NULL},
	{US "fwrdc", TYPETW + TYPEPW, ufwrdc, NULL, 1, US "bkwdc"},
	{US "gomark", TYPETW + TYPEPW + EMOVE, ugomark, NULL, 0, NULL},
	{US "groww", TYPETW, ugroww, NULL, 1, US "shrinkw"},
	{US "help", TYPETW + TYPEPW + TYPEQW, u_help, NULL, 0, NULL},
	{US "helpcard", TYPETW + TYPEPW + TYPEQW, u_helpcard, NULL, 0, NULL},
	{US "hnext", TYPETW + TYPEPW + TYPEQW, u_help_next, NULL, 0, NULL},
	{US "home", TYPETW + TYPEPW + EFIXXCOL, uhome, NULL, 0, NULL},
	{US "hprev", TYPETW + TYPEPW + TYPEQW, u_help_prev, NULL, 0, NULL},
	{US "insc", TYPETW + TYPEPW + EFIXXCOL + EMOD, uinsc, NULL, 1, US "delch"},
	{US "insf", TYPETW + TYPEPW + EMOD, uinsf, NULL, 0, NULL},
	{US "isrch", TYPETW + TYPEPW, uisrch, NULL, 0, NULL},
	{US "keymap", TYPETW + TYPEPW, ukeymap, NULL, 0, NULL},
	{US "killjoe", TYPETW + TYPEPW + TYPEMENU + TYPEQW, ukilljoe, NULL, 0, NULL},
	{US "killproc", TYPETW + TYPEPW, ukillpid, NULL, 0, NULL},
	{US "lindent", TYPETW + TYPEPW + EFIXXCOL + EMOD + EBLOCK, ulindent, NULL, 1, US "rindent"},
	{US "line", TYPETW + TYPEPW, uline, NULL, 0, NULL},
	{US "lose", TYPETW + TYPEPW, ulose, NULL, 0, NULL},
	{US "lower", TYPETW + TYPEPW + EMOD + EBLOCK, ulower, NULL, 0, NULL},
	{US "ltarw", TYPETW + TYPEPW /* + EFIXXCOL + ECHKXCOL */, u_goto_left, NULL, 1, US "rtarw"},
	{US "ltarwmenu", TYPEMENU, umltarw, NULL, 1, US "rtarwmenu"},
	{US "macros", TYPETW + EFIXXCOL, umacros, NULL, 0, NULL},
	{US "markb", TYPETW + TYPEPW, umarkb, NULL, 0, NULL},
	{US "markk", TYPETW + TYPEPW, umarkk, NULL, 0, NULL},
	{US "markl", TYPETW + TYPEPW, umarkl, NULL, 0, NULL},
	{US "math", TYPETW + TYPEPW, umath, NULL, 0, NULL},
	{US "mathins", TYPETW + TYPEPW, umathins, NULL, 0, NULL},
	{US "mathres", TYPETW + TYPEPW, umathres, NULL, 0, NULL},
	{US "mode", TYPETW + TYPEPW + TYPEQW, umode, NULL, 0, NULL},
	{US "msg", TYPETW + TYPEPW + TYPEQW + TYPEMENU, umsg, NULL, 0, NULL},
	{US "nbuf", TYPETW, unbuf, NULL, 1, US "pbuf"},
	{US "nedge", TYPETW + TYPEPW + EFIXXCOL, unedge, NULL, 1, US "pedge"},
	{US "nextpos", TYPETW + TYPEPW + EFIXXCOL + EMID + EPOS, unextpos, NULL, 1, US "prevpos"},
	{US "nextw", TYPETW + TYPEPW + TYPEMENU + TYPEQW, unextw, NULL, 1, US "prevw"},
	{US "nextword", TYPETW + TYPEPW + EFIXXCOL, u_goto_next, NULL, 1, US "prevword"},
	{US "nmark", TYPETW + TYPEPW, unmark, NULL, 0, NULL},
	{US "nop", TYPETW + TYPEPW + TYPEMENU + TYPEQW, unop, NULL, 0, NULL},
	{US "notmod", TYPETW, unotmod, NULL, 0, NULL},
	{US "nxterr", TYPETW, unxterr, NULL, 1, US "prverr"},
	{US "open", TYPETW + TYPEPW + EFIXXCOL + EMOD, uopen, NULL, 1, US "deleol"},
	{US "parserr", TYPETW, uparserr, NULL, 0, NULL},
	{US "pbuf", TYPETW, upbuf, NULL, 1, US "nbuf"},
	{US "pedge", TYPETW + TYPEPW + EFIXXCOL, upedge, NULL, 1, US "nedge"},
	{US "pgdn", TYPETW + TYPEPW + TYPEMENU + TYPEQW + EMOVE, upgdn, NULL, 1, US "pgup"},
	{US "pgdnmenu", TYPEMENU, umpgdn, NULL, 1, US "pgupmenu"},
	{US "pgup", TYPETW + TYPEPW + TYPEMENU + TYPEQW + EMOVE, upgup, NULL, 1, US "pgdn"},
	{US "pgupmenu", TYPEMENU, umpgup, NULL, 1, US "pgdnmenu"},
	{US "picokill", TYPETW + TYPEPW + EFIXXCOL + EKILL + EMOD, upicokill, NULL, 1, NULL},
	{US "play", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uplay, NULL, 1, NULL},	/* EFIXX? */
	{US "pop", TYPETW + TYPEPW + TYPEMENU + TYPEQW, upop, NULL, 0, NULL},
	{US "prevpos", TYPETW + TYPEPW + EPOS + EMID + EFIXXCOL, uprevpos, NULL, 1, US "nextpos"},
	{US "prevw", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uprevw, NULL, 1, US "nextw"},
	{US "prevword", TYPETW + TYPEPW + EFIXXCOL + ECHKXCOL, u_goto_prev, NULL, 1, US "nextword"},
	{US "prverr", TYPETW, uprverr, NULL, 1, US "nxterr"},
	{US "psh", TYPETW + TYPEPW + TYPEMENU + TYPEQW, upsh, NULL, 0, NULL},
	{US "qrepl", TYPETW + TYPEPW + EMOD, pqrepl, NULL, 0, NULL},
	{US "query", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uquery, NULL, 0, NULL},
	{US "querysave", TYPETW, uquerysave, NULL, 0, NULL},
	{US "quote", TYPETW + TYPEPW + EMOD, uquote, NULL, 0, NULL},
	{US "quote8", TYPETW + TYPEPW + EMOD, uquote8, NULL, 0, NULL},
	{US "record", TYPETW + TYPEPW + TYPEMENU + TYPEQW, urecord, NULL, 0, NULL},
	{US "redo", TYPETW + TYPEPW + EFIXXCOL, uredo, NULL, 1, US "undo"},
	{US "retype", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uretyp, NULL, 0, NULL},
	{US "rfirst", TYPETW + TYPEPW, prfirst, NULL, 0, NULL},
	{US "rindent", TYPETW + TYPEPW + EFIXXCOL + EMOD + EBLOCK, urindent, NULL, 1, US "lindent"},
	{US "rsrch", TYPETW + TYPEPW, ursrch, NULL, 0, NULL},
	{US "rtarw", TYPETW + TYPEPW /* + EFIXXCOL */, u_goto_right, NULL, 1, US "ltarw"}, /* EFIX removed for picture mode */
	{US "rtarwmenu", TYPEMENU, umrtarw, NULL, 1, US "ltarwmenu"},
	{US "rtn", TYPETW + TYPEPW + TYPEMENU + TYPEQW + EMOD, urtn, NULL, 1, NULL},
	{US "run", TYPETW + TYPEPW, urun, NULL, 0, NULL},
	{US "rvmatch", TYPETW + TYPEPW + EFIXXCOL, urvmatch, NULL, 0, NULL},
	{US "save", TYPETW, usave, NULL, 0, NULL},
	{US "scratch", TYPETW + TYPEPW, uscratch, NULL, 0, NULL},
	{US "select", TYPETW + TYPEPW, uselect, NULL, 0, NULL},
	{US "setmark", TYPETW + TYPEPW, usetmark, NULL, 0, NULL},
	{US "shell", TYPETW + TYPEPW + TYPEMENU + TYPEQW, ushell, NULL, 0, NULL},
	{US "shrinkw", TYPETW, ushrnk, NULL, 1, US "groww"},
	{US "splitw", TYPETW, usplitw, NULL, 0, NULL},
	{US "stat", TYPETW + TYPEPW, ustat, NULL, 0, NULL},
	{US "stop", TYPETW + TYPEPW + TYPEMENU + TYPEQW, ustop, NULL, 0, NULL},
	{US "swap", TYPETW + TYPEPW + EFIXXCOL, uswap, NULL, 0, NULL},
	{US "switch", TYPETW + TYPEPW, uswitch, NULL, 0, NULL},
	{US "tabmenu", TYPEMENU, umtab, NULL, 1, US "ltarwmenu"},
	{US "tag", TYPETW + TYPEPW, utag, NULL, 0, NULL},
	{US "toggle_marking", TYPETW + TYPEPW, utoggle_marking, NULL, 0, NULL},
	{US "tomarkb", TYPETW + TYPEPW + EFIXXCOL + EBLOCK, utomarkb, NULL, 0, NULL},
	{US "tomarkbk", TYPETW + TYPEPW + EFIXXCOL + EBLOCK, utomarkbk, NULL, 0, NULL},
	{US "tomarkk", TYPETW + TYPEPW + EFIXXCOL + EBLOCK, utomarkk, NULL, 0, NULL},
	{US "tomatch", TYPETW + TYPEPW + EFIXXCOL, utomatch, NULL, 0, NULL},
	{US "tos", TYPETW + TYPEPW + EMOVE, utos, NULL, 0, NULL},
	{US "tw0", TYPETW + TYPEPW + TYPEQW + TYPEMENU, utw0, NULL, 0, NULL},
	{US "tw1", TYPETW + TYPEPW + TYPEQW + TYPEMENU, utw1, NULL, 0, NULL},
	{US "txt", TYPETW + TYPEPW, utxt, NULL, 0, NULL},
	{US "type", TYPETW + TYPEPW + TYPEQW + TYPEMENU + EMINOR + EMOD, utype, NULL, 1, US "backs"},
	{US "uarg", TYPETW + TYPEPW + TYPEMENU + TYPEQW, uuarg, NULL, 0, NULL},
	{US "undo", TYPETW + TYPEPW + EFIXXCOL, uundo, NULL, 1, US "redo"},
	{US "uparw", TYPETW + TYPEPW + EMOVE, uuparw, NULL, 1, US "dnarw"},
	{US "uparwmenu", TYPEMENU, umuparw, NULL, 1, US "dnarwmenu"},
	{US "upper", TYPETW + TYPEPW + EMOD + EBLOCK, uupper, NULL, 0, NULL},
	{US "upslide", TYPETW + TYPEPW + TYPEMENU + TYPEQW + EMOVE, uupslide, NULL, 1, US "dnslide"},
	{US "yank", TYPETW + TYPEPW + EFIXXCOL + EMOD, uyank, NULL, 1, NULL},
	{US "yankpop", TYPETW + TYPEPW + EFIXXCOL + EMOD, uyankpop, NULL, 1, NULL},
	{US "yapp", TYPETW + TYPEPW + EKILL, uyapp, NULL, 0, NULL}
};

/* Execute a command n with key k */

int execmd(CMD *cmd, int k)
{
	BW *bw = (BW *) maint->curwin->object;
	int ret = -1;

	/* Send data to shell window: this is broken ^K ^H (help) sends its ^H to shell */
	if ((maint->curwin->watom->what & TYPETW) && bw->b->pid && piseof(bw->cursor) &&
	(k==3 || k==13 || k==8 || k==127 || k==4 || ((cmd->func==utype) && (k>=32) && (k<256)))) {
		unsigned char c = k;
		joe_write(bw->b->out, &c, 1);
		return 0;
	}

	if (cmd->m)
		return exmacro(cmd->m, 0);

	/* We don't execute if we have to fix the column position first
	 * (i.e., left arrow when cursor is in middle of nowhere) */
	if (cmd->flag & ECHKXCOL) {
		if (bw->o.hex)
			bw->cursor->xcol = piscol(bw->cursor);
		else if (bw->cursor->xcol != piscol(bw->cursor))
			goto skip;
	}

	/* Don't execute command if we're in wrong type of window */
	if (!(cmd->flag & maint->curwin->watom->what))
		goto skip;

	/* Complete selection for block commands */
	if ((cmd->flag & EBLOCK) && marking)
		utoggle_marking(maint->curwin->object);

	if ((maint->curwin->watom->what & TYPETW) && bw->b->rdonly && (cmd->flag & EMOD)) {
		msgnw(bw->parent, US "Read only");
		if (dobeep)
			ttputc(7);
		goto skip;
	}

	/* Execute command */
	ret = cmd->func(maint->curwin->object, k);

	if (smode)
		--smode;

	/* Don't update anything if we're going to leave */
	if (leave)
		return 0;

	/* cmd->func could have changed bw on us */
	bw = (BW *) maint->curwin->object;

	/* Maintain position history */
	/* If command was not a positioning command */
	if (!(cmd->flag & EPOS)
	    && (maint->curwin->watom->what & (TYPETW | TYPEPW)))
		afterpos();

	/* If command was not a movement */
	if (!(cmd->flag & (EMOVE | EPOS)) && (maint->curwin->watom->what & (TYPETW | TYPEPW)))
		aftermove(maint->curwin, bw->cursor);

	if (cmd->flag & EKILL)
		justkilled = 1;
	else
		justkilled = 0;

 skip:

	/* Make dislayed cursor column equal the actual cursor column
	 * for commands which arn't simple vertical movements */
	if (cmd->flag & EFIXXCOL)
		bw->cursor->xcol = piscol(bw->cursor);

	/* Recenter cursor to middle of screen */
	if (cmd->flag & EMID) {
		int omid = mid;

		mid = 1;
		dofollows();
		mid = omid;
	}

	if (dobeep && ret)
		ttputc(7);
	return ret;
}

/* Return command table index for given command name */

HASH *cmdhash = NULL;

static void izcmds(void)
{
	int x;

	cmdhash = htmk(256);
	for (x = 0; x != sizeof(cmds) / sizeof(CMD); ++x)
		htadd(cmdhash, cmds[x].name, cmds + x);
}

CMD *findcmd(unsigned char *s)
{
	if (!cmdhash)
		izcmds();
	return (CMD *) htfind(cmdhash, s);
}

void addcmd(unsigned char *s, MACRO *m)
{
	CMD *cmd = (CMD *) joe_malloc(sizeof(CMD));

	if (!cmdhash)
		izcmds();
	cmd->name = (unsigned char *)strdup((char *)s);
	cmd->flag = 0;
	cmd->func = NULL;
	cmd->m = m;
	cmd->arg = 1;
	cmd->negarg = NULL;
	htadd(cmdhash, cmd->name, cmd);
}

static unsigned char **getcmds(void)
{
	unsigned char **s = vaensure(NULL, sizeof(cmds) / sizeof(CMD));
	int x;
	HENTRY *e;

	for (x = 0; x != cmdhash->len; ++x)
		for (e = cmdhash->tab[x]; e; e = e->next)
			s = vaadd(s, vsncpy(NULL, 0, sz(e->name)));
	vasort(s, aLen(s));
	return s;
}

/* Command line */

unsigned char **scmds = NULL;	/* Array of command names */

static int cmdcmplt(BW *bw)
{
	if (!scmds)
		scmds = getcmds();
	/*XXX simple_cmplt does p_goto_bol, better only to last comma */
	return simple_cmplt(bw, scmds);
}

static int docmd(BW *bw, unsigned char *s, void *object, int *notify)
{
	MACRO *mac;
	int ret = -1;

	if (s) {
		mac = mparse(NULL, s, &ret);
		if (ret < 0 || !mac)
			msgnw(bw->parent, US "No such command");
		else {
			ret = exmacro(mac, 1);
			rmmacro(mac);
		}
	}
	vsrm(s);	/* allocated in pw.c::rtnpw() */
	if (notify)
		*notify = 1;
	return ret;
}

B *cmdhist = NULL;

int uexecmd(BW *bw)
{
	if (wmkpw(bw->parent, US "cmd: ", &cmdhist, docmd, US "cmd", NULL, cmdcmplt, NULL, NULL, locale_map)) {
		return 0;
	} else {
		return -1;
	}
}

/*
 * Show help screen at a specific card
 */
static int do_helpcard(BASE *base, unsigned char *s, void *object, int *notify)
{
	struct help *new_help;

	if (notify)
		*notify = 1;
	if (!s || !*s) {
		while (help_actual->prev != NULL)
			/* find the first help entry */
			help_actual = help_actual->prev;
		help_off(base->parent->t);
		return (0);
	}
	if ((new_help = find_context_help(s)) != NULL) {
		help_actual = new_help;
		return (help_on(base->parent->t));
	}
	return (-1);
}
int u_helpcard(BASE *base)
{
	if (wmkpw(base->parent, US "Name of help card to show: ", NULL,
	    do_helpcard, NULL, NULL, utypebw, NULL, NULL, locale_map)) {
		return (0);
	}
	return (-1);
}