Initial revision

5 files changed, 1765 insertions, 0 deletions

diff --git a/Src/Zle/compctl.h b/Src/Zle/compctl.h
new file mode 100644
index 000000000..9a8ba5692
--- /dev/null
+++ b/Src/Zle/compctl.h
@@ -0,0 +1,160 @@
+/*
+ * comp.h - header file for completion
+ *
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 1992-1997 Paul Falstad
+ * All rights reserved.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and to distribute modified versions of this software for any
+ * purpose, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * In no event shall Paul Falstad or the Zsh Development Group be liable
+ * to any party for direct, indirect, special, incidental, or consequential
+ * damages arising out of the use of this software and its documentation,
+ * even if Paul Falstad and the Zsh Development Group have been advised of
+ * the possibility of such damage.
+ *
+ * Paul Falstad and the Zsh Development Group specifically disclaim any
+ * warranties, including, but not limited to, the implied warranties of
+ * merchantability and fitness for a particular purpose.  The software
+ * provided hereunder is on an "as is" basis, and Paul Falstad and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+
+#undef compctlread
+
+typedef struct compctlp  *Compctlp;
+typedef struct compctl   *Compctl;
+typedef struct compcond  *Compcond;
+typedef struct patcomp   *Patcomp;
+
+/* node for compctl hash table (compctltab) */
+
+struct compctlp {
+    HashNode next;		/* next in hash chain               */
+    char *nam;			/* command name                     */
+    int flags;			/* CURRENTLY UNUSED                 */
+    Compctl cc;			/* pointer to the compctl desc.     */
+};
+
+/* for the list of pattern compctls */
+
+struct patcomp {
+    Patcomp next;
+    char *pat;
+    Compctl cc;
+};
+
+/* compctl -x condition */
+
+struct compcond {
+    Compcond and, or;		/* the next or'ed/and'ed conditions    */
+    int type;			/* the type (CCT_*)                    */
+    int n;			/* the array length                    */
+    union {			/* these structs hold the data used to */
+	struct {		/* test this condition                 */
+	    int *a, *b;		/* CCT_POS, CCT_NUMWORDS               */
+	}
+	r;
+	struct {		/* CCT_CURSTR, CCT_CURPAT,... */
+	    int *p;
+	    char **s;
+	}
+	s;
+	struct {		/* CCT_RANGESTR,... */
+	    char **a, **b;
+	}
+	l;
+    }
+    u;
+};
+
+#define CCT_UNUSED     0
+#define CCT_POS        1
+#define CCT_CURSTR     2
+#define CCT_CURPAT     3
+#define CCT_WORDSTR    4
+#define CCT_WORDPAT    5
+#define CCT_CURSUF     6
+#define CCT_CURPRE     7
+#define CCT_CURSUB     8
+#define CCT_CURSUBC    9
+#define CCT_NUMWORDS  10
+#define CCT_RANGESTR  11
+#define CCT_RANGEPAT  12
+#define CCT_QUOTE     13
+
+/* Contains the real description for compctls */
+
+struct compctl {
+    int refc;			/* reference count                         */
+    Compctl next;		/* next compctl for -x                     */
+    unsigned long mask, mask2;	/* masks of things to complete (CC_*)      */
+    char *keyvar;		/* for -k (variable)                       */
+    char *glob;			/* for -g (globbing)                       */
+    char *str;			/* for -s (expansion)                      */
+    char *func;			/* for -K (function)                       */
+    char *explain;		/* for -X (explanation)                    */
+    char *ylist;		/* for -y (user-defined desc. for listing) */
+    char *prefix, *suffix;	/* for -P and -S (prefix, suffix)          */
+    char *subcmd;		/* for -l (command name to use)            */
+    char *substr;		/* for -1 (command name to use)            */
+    char *withd;		/* for -w (with directory                  */
+    char *hpat;			/* for -H (history pattern)                */
+    int hnum;			/* for -H (number of events to search)     */
+    char *gname;		/* for -J and -V (group name)              */
+    Compctl ext;		/* for -x (first of the compctls after -x) */
+    Compcond cond;		/* for -x (condition for this compctl)     */
+    Compctl xor;		/* for + (next of the xor'ed compctls)     */
+    Cmatcher matcher;		/* matcher control (-M) */
+    char *mstr;			/* matcher string */
+};
+
+/* objects to complete (mask) */
+#define CC_FILES	(1<<0)
+#define CC_COMMPATH	(1<<1)
+#define CC_REMOVE	(1<<2)
+#define CC_OPTIONS	(1<<3)
+#define CC_VARS		(1<<4)
+#define CC_BINDINGS	(1<<5)
+#define CC_ARRAYS	(1<<6)
+#define CC_INTVARS	(1<<7)
+#define CC_SHFUNCS	(1<<8)
+#define CC_PARAMS	(1<<9)
+#define CC_ENVVARS	(1<<10)
+#define CC_JOBS		(1<<11)
+#define CC_RUNNING	(1<<12)
+#define CC_STOPPED	(1<<13)
+#define CC_BUILTINS	(1<<14)
+#define CC_ALREG	(1<<15)
+#define CC_ALGLOB	(1<<16)
+#define CC_USERS	(1<<17)
+#define CC_DISCMDS	(1<<18)
+#define CC_EXCMDS	(1<<19)
+#define CC_SCALARS	(1<<20)
+#define CC_READONLYS	(1<<21)
+#define CC_SPECIALS	(1<<22)
+#define CC_DELETE	(1<<23)
+#define CC_NAMED	(1<<24)
+#define CC_QUOTEFLAG	(1<<25)
+#define CC_EXTCMDS	(1<<26)
+#define CC_RESWDS	(1<<27)
+#define CC_DIRS		(1<<28)
+
+#define CC_EXPANDEXPL	(1<<30)
+#define CC_RESERVED	(1<<31)
+
+/* objects to complete (mask2) */
+#define CC_NOSORT	(1<<0)
+#define CC_XORCONT	(1<<1)
+#define CC_CCCONT	(1<<2)
+#define CC_PATCONT	(1<<3)
+#define CC_DEFCONT	(1<<4)
+#define CC_UNIQCON      (1<<5)
+#define CC_UNIQALL      (1<<6)
diff --git a/Src/Zle/complete.c b/Src/Zle/complete.c
new file mode 100644
index 000000000..283b8de62
--- /dev/null
+++ b/Src/Zle/complete.c
@@ -0,0 +1,1332 @@
+/*
+ * complete.c - the complete module
+ *
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 1999 Sven Wischnowsky
+ * All rights reserved.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and to distribute modified versions of this software for any
+ * purpose, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * In no event shall Sven Wischnowsky or the Zsh Development Group be liable
+ * to any party for direct, indirect, special, incidental, or consequential
+ * damages arising out of the use of this software and its documentation,
+ * even if Sven Wischnowsky and the Zsh Development Group have been advised of
+ * the possibility of such damage.
+ *
+ * Sven Wischnowsky and the Zsh Development Group specifically disclaim any
+ * warranties, including, but not limited to, the implied warranties of
+ * merchantability and fitness for a particular purpose.  The software
+ * provided hereunder is on an "as is" basis, and Sven Wischnowsky and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+
+#include "complete.mdh"
+#include "complete.pro"
+#define GLOBAL_PROTOTYPES
+#include "zle_tricky.pro"
+#undef GLOBAL_PROTOTYPES
+
+/**/
+void
+freecmlist(Cmlist l)
+{
+    Cmlist n;
+
+    while (l) {
+	n = l->next;
+	freecmatcher(l->matcher);
+	zsfree(l->str);
+
+	zfree(l, sizeof(struct cmlist));
+
+	l = n;
+    }
+}
+
+/**/
+void
+freecmatcher(Cmatcher m)
+{
+    Cmatcher n;
+
+    if (!m || --(m->refc))
+	return;
+
+    while (m) {
+	n = m->next;
+	freecpattern(m->line);
+	freecpattern(m->word);
+	freecpattern(m->left);
+	freecpattern(m->right);
+
+	zfree(m, sizeof(struct cmatcher));
+
+	m = n;
+    }
+}
+
+/**/
+void
+freecpattern(Cpattern p)
+{
+    Cpattern n;
+
+    while (p) {
+	n = p->next;
+	zfree(p, sizeof(struct cpattern));
+
+	p = n;
+    }
+}
+
+/* Copy a list of completion matchers. */
+
+static Cmlist
+cpcmlist(Cmlist l)
+{
+    Cmlist r = NULL, *p = &r, n;
+
+    while (l) {
+	*p = n = (Cmlist) zalloc(sizeof(struct cmlist));
+	n->next = NULL;
+	n->matcher = cpcmatcher(l->matcher);
+	n->str = ztrdup(l->str);
+
+	p = &(n->next);
+	l = l->next;
+    }
+    return r;
+}
+
+/* Copy a completion matcher list. */
+
+/**/
+Cmatcher
+cpcmatcher(Cmatcher m)
+{
+    Cmatcher r = NULL, *p = &r, n;
+
+    while (m) {
+	*p = n = (Cmatcher) zalloc(sizeof(struct cmatcher));
+
+	n->refc = 1;
+	n->next = NULL;
+	n->flags = m->flags;
+	n->line = cpcpattern(m->line);
+	n->llen = m->llen;
+	n->word = cpcpattern(m->word);
+	n->wlen = m->wlen;
+	n->left = cpcpattern(m->left);
+	n->lalen = m->lalen;
+	n->right = cpcpattern(m->right);
+	n->ralen = m->ralen;
+
+	p = &(n->next);
+	m = m->next;
+    }
+    return r;
+}
+
+/* Copy a completion matcher pattern. */
+
+/**/
+static Cpattern
+cpcpattern(Cpattern o)
+{
+    Cpattern r = NULL, *p = &r, n;
+
+    while (o) {
+	*p = n = (Cpattern) zalloc(sizeof(struct cpattern));
+
+	n->next = NULL;
+	memcpy(n->tab, o->tab, 256);
+	n->equiv = o->equiv;
+
+	p = &(n->next);
+	o = o->next;
+    }
+    return r;
+}
+
+/* Set the global match specs. */
+
+/**/
+int
+set_gmatcher(char *name, char **argv)
+{
+    Cmlist l = NULL, *q = &l, n;
+    Cmatcher m;
+
+    while (*argv) {
+	if ((m = parse_cmatcher(name, *argv)) == pcm_err)
+	    return 1;
+	*q = n = (Cmlist) zhalloc(sizeof(struct cmlist));
+	n->next = NULL;
+	n->matcher = m;
+	n->str = *argv++;
+
+	q = &(n->next);
+    }
+    freecmlist(cmatcher);
+    PERMALLOC {
+	cmatcher = cpcmlist(l);
+    } LASTALLOC;
+
+    return 1;
+}
+
+/* Parse a string for matcher control, containing multiple matchers. */
+
+/**/
+Cmatcher
+parse_cmatcher(char *name, char *s)
+{
+    Cmatcher ret = NULL, r = NULL, n;
+    Cpattern line, word, left, right;
+    int fl, ll, wl, lal, ral, err;
+
+    if (!*s)
+	return NULL;
+
+    while (*s) {
+	while (*s && inblank(*s)) s++;
+
+	if (!*s) break;
+
+	switch (*s) {
+	case 'l': fl = CMF_LEFT; break;
+	case 'r': fl = CMF_RIGHT; break;
+	case 'm': fl = 0; break;
+	case 'L': fl = CMF_LEFT | CMF_LINE; break;
+	case 'R': fl = CMF_RIGHT | CMF_LINE; break;
+	case 'M': fl = CMF_LINE; break;
+	default:
+	    zwarnnam(name, "unknown match specification character `%c'", NULL, *s);
+	    return pcm_err;
+	}
+	if (s[1] != ':') {
+	    zwarnnam(name, "missing `:'", NULL, 0);
+	    return pcm_err;
+	}
+	s += 2;
+	if (!*s) {
+	    zwarnnam(name, "missing patterns", NULL, 0);
+	    return pcm_err;
+	}
+	if (fl & CMF_LEFT) {
+	    left = parse_pattern(name, &s, &lal, '|', &err);
+	    if (err)
+		return pcm_err;
+	    if (!*s || !*++s) {
+		zwarnnam(name, "missing line pattern", NULL, 0);
+		return pcm_err;
+	    }
+	} else
+	    left = NULL;
+
+	line = parse_pattern(name, &s, &ll, ((fl & CMF_RIGHT) ? '|' : '='),
+			     &err);
+	if (err)
+	    return pcm_err;
+	if ((fl & CMF_RIGHT) && (!*s || !*++s)) {
+	    zwarnnam(name, "missing right anchor", NULL, 0);
+	} else if (!(fl & CMF_RIGHT)) {
+	    if (!*s) {
+		zwarnnam(name, "missing word pattern", NULL, 0);
+		return pcm_err;
+	    }
+	    s++;
+	}
+	if (fl & CMF_RIGHT) {
+	    right = parse_pattern(name, &s, &ral, '=', &err);
+	    if (err)
+		return pcm_err;
+	    if (!*s) {
+		zwarnnam(name, "missing word pattern", NULL, 0);
+		return pcm_err;
+	    }
+	    s++;
+	} else
+	    right = NULL;
+
+	if (*s == '*') {
+	    if (!(fl & (CMF_LEFT | CMF_RIGHT))) {
+		zwarnnam(name, "need anchor for `*'", NULL, 0);
+		return pcm_err;
+	    }
+	    word = NULL;
+	    wl = -1;
+	    s++;
+	} else {
+	    word = parse_pattern(name, &s, &wl, 0, &err);
+
+	    if (!word && !line) {
+		zwarnnam(name, "need non-empty word or line pattern", NULL, 0);
+		return pcm_err;
+	    }
+	}
+	if (err)
+	    return pcm_err;
+
+	n = (Cmatcher) zcalloc(sizeof(*ret));
+	n->next = NULL;
+	n->flags = fl;
+	n->line = line;
+	n->llen = ll;
+	n->word = word;
+	n->wlen = wl;
+	n->left = left;
+	n->lalen = lal;
+	n->right = right;
+	n->ralen = ral;
+
+	if (ret)
+	    r->next = n;
+	else
+	    ret = n;
+
+	r = n;
+    }
+    return ret;
+}
+
+/* Parse a pattern for matcher control. */
+
+/**/
+static Cpattern
+parse_pattern(char *name, char **sp, int *lp, char e, int *err)
+{
+    Cpattern ret = NULL, r = NULL, n;
+    unsigned char *s = (unsigned char *) *sp;
+    int l = 0;
+
+    *err = 0;
+
+    while (*s && (e ? (*s != e) : !inblank(*s))) {
+	n = (Cpattern) hcalloc(sizeof(*n));
+	n->next = NULL;
+	n->equiv = 0;
+
+	if (*s == '[') {
+	    s = parse_class(n, s + 1, ']');
+	    if (!*s) {
+		*err = 1;
+		zwarnnam(name, "unterminated character class", NULL, 0);
+		return NULL;
+	    }
+	} else if (*s == '{') {
+	    n->equiv = 1;
+	    s = parse_class(n, s + 1, '}');
+	    if (!*s) {
+		*err = 1;
+		zwarnnam(name, "unterminated character class", NULL, 0);
+		return NULL;
+	    }
+	} else if (*s == '?') {
+	    memset(n->tab, 1, 256);
+	} else if (*s == '*' || *s == '(' || *s == ')' || *s == '=') {
+	    *err = 1;
+	    zwarnnam(name, "invalid pattern character `%c'", NULL, *s);
+	    return NULL;
+	} else {
+	    if (*s == '\\' && s[1])
+		s++;
+
+	    memset(n->tab, 0, 256);
+	    n->tab[*s] = 1;
+	}
+	if (ret)
+	    r->next = n;
+	else
+	    ret = n;
+
+	r = n;
+
+	l++;
+	s++;
+    }
+    *sp = (char *) s;
+    *lp = l;
+    return ret;
+}
+
+/* Parse a character class for matcher control. */
+
+/**/
+static unsigned char *
+parse_class(Cpattern p, unsigned char *s, unsigned char e)
+{
+    int n = 0, i = 1, j, eq = (e == '}'), k = 1;
+
+    if (!eq && (*s == '!' || *s == '^') && s[1] != e) { n = 1; s++; }
+
+    memset(p->tab, n, 256);
+
+    n = !n;
+    while (*s && (k || *s != e)) {
+	if (s[1] == '-' && s[2] != e) {
+	    /* a run of characters */
+	    for (j = (int) *s; j <= (int) s[2]; j++)
+		p->tab[j] = (eq ? i++ : n);
+
+	    s += 3;
+	} else
+	    p->tab[*s++] = (eq ? i++ : n);
+	k = 0;
+    }
+    return s;
+}
+
+/**/
+static int
+bin_compadd(char *name, char **argv, char *ops, int func)
+{
+    struct cadata dat;
+    char *p, **sp, *e, *m = NULL;
+    int dm;
+    Cmatcher match = NULL;
+
+    if (incompfunc != 1) {
+	zerrnam(name, "can only be called from completion function", NULL, 0);
+	return 1;
+    }
+    dat.ipre = dat.isuf = dat.ppre = dat.psuf = dat.prpre =
+	dat.pre = dat.suf = dat.group = dat.rems = dat.remf = dat.disp = 
+	dat.ign = dat.exp = dat.apar = dat.opar = dat.dpar = dat.ylist = NULL;
+    dat.match = NULL;
+    dat.flags = 0;
+    dat.aflags = CAF_MATCH;
+
+    for (; *argv && **argv ==  '-'; argv++) {
+	if (!(*argv)[1]) {
+	    argv++;
+	    break;
+	}
+	for (p = *argv + 1; *p; p++) {
+	    sp = NULL;
+	    e = NULL;
+	    dm = 0;
+	    switch (*p) {
+	    case 'q':
+		dat.flags |= CMF_REMOVE;
+		break;
+	    case 'Q':
+		dat.aflags |= CAF_QUOTE;
+		break;
+	    case 'f':
+		dat.flags |= CMF_FILE;
+		break;
+	    case 'e':
+		dat.flags |= CMF_ISPAR;
+		break;
+	    case 'F':
+		sp = &(dat.ign);
+		e = "string expected after -%c";
+		break;
+	    case 'n':
+		dat.flags |= CMF_NOLIST;
+		break;
+	    case 'U':
+		dat.aflags &= ~CAF_MATCH;
+		break;
+	    case 'P':
+		sp = &(dat.pre);
+		e = "string expected after -%c";
+		break;
+	    case 'S':
+		sp = &(dat.suf);
+		e = "string expected after -%c";
+		break;
+	    case 'J':
+		sp = &(dat.group);
+		e = "group name expected after -%c";
+		break;
+	    case 'V':
+		if (!dat.group)
+		    dat.aflags |= CAF_NOSORT;
+		sp = &(dat.group);
+		e = "group name expected after -%c";
+		break;
+	    case '1':
+		if (!(dat.aflags & CAF_UNIQCON))
+		    dat.aflags |= CAF_UNIQALL;
+		break;
+	    case '2':
+		if (!(dat.aflags & CAF_UNIQALL))
+		    dat.aflags |= CAF_UNIQCON;
+		break;
+	    case 'y':
+		sp = &(dat.ylist);
+		e = "string expected after -%c";
+		break;
+	    case 'i':
+		sp = &(dat.ipre);
+		e = "string expected after -%c";
+		break;
+	    case 'I':
+		sp = &(dat.isuf);
+		e = "string expected after -%c";
+		break;
+	    case 'p':
+		sp = &(dat.ppre);
+		e = "string expected after -%c";
+		break;
+	    case 's':
+		sp = &(dat.psuf);
+		e = "string expected after -%c";
+		break;
+	    case 'W':
+		sp = &(dat.prpre);
+		e = "string expected after -%c";
+		break;
+	    case 'a':
+		dat.aflags |= CAF_ALT;
+		break;
+	    case 'M':
+		sp = &m;
+		e = "matching specification expected after -%c";
+		dm = 1;
+		break;
+	    case 'X':
+		sp = &(dat.exp);
+		e = "string expected after -%c";
+		break;
+	    case 'r':
+		dat.flags |= CMF_REMOVE;
+		sp = &(dat.rems);
+		e = "string expected after -%c";
+		break;
+	    case 'R':
+		dat.flags |= CMF_REMOVE;
+		sp = &(dat.remf);
+		e = "function name expected after -%c";
+		break;
+	    case 'A':
+		sp = &(dat.apar);
+		e = "parameter name expected after -%c";
+		break;
+	    case 'O':
+		sp = &(dat.opar);
+		e = "parameter name expected after -%c";
+		break;
+	    case 'D':
+		sp = &(dat.dpar);
+		e = "parameter name expected after -%c";
+		break;
+	    case 'd':
+		sp = &(dat.disp);
+		e = "parameter name expected after -%c";
+		break;
+	    case 'l':
+		dat.flags |= CMF_DISPLINE;
+		break;
+	    case '-':
+		argv++;
+		goto ca_args;
+	    default:
+		zerrnam(name, "bad option: -%c", NULL, *p);
+		return 1;
+	    }
+	    if (sp) {
+		if (p[1]) {
+		    if (!*sp)
+			*sp = p + 1;
+		    p = "" - 1;
+		} else if (argv[1]) {
+		    argv++;
+		    if (!*sp)
+			*sp = *argv;
+		    p = "" - 1;
+		} else {
+		    zerrnam(name, e, NULL, *p);
+		    return 1;
+		}
+		if (dm && (match = parse_cmatcher(name, m)) == pcm_err) {
+		    match = NULL;
+		    return 1;
+		}
+	    }
+	}
+    }
+ ca_args:
+    if (!*argv)
+	return 1;
+
+    dat.match = match = cpcmatcher(match);
+    dm = addmatches(&dat, argv);
+    freecmatcher(match);
+
+    return dm;
+}
+
+#define CVT_RANGENUM 0
+#define CVT_RANGEPAT 1
+#define CVT_PRENUM   2
+#define CVT_PREPAT   3
+#define CVT_SUFNUM   4
+#define CVT_SUFPAT   5
+
+/**/
+void
+ignore_prefix(int l)
+{
+    if (l) {
+	char *tmp, sav;
+	int pl = strlen(compprefix);
+
+	if (l > pl)
+	    l = pl;
+
+	sav = compprefix[l];
+
+	compprefix[l] = '\0';
+	tmp = tricat(compiprefix, compprefix, "");
+	zsfree(compiprefix);
+	compiprefix = tmp;
+	compprefix[l] = sav;
+	tmp = ztrdup(compprefix + l);
+	zsfree(compprefix);
+	compprefix = tmp;
+    }
+}
+
+/**/
+void
+ignore_suffix(int l)
+{
+    if (l) {
+	char *tmp, sav;
+	int sl = strlen(compsuffix);
+
+	if ((l = sl - l) < 0)
+	    l = 0;
+
+	tmp = tricat(compsuffix + l, compisuffix, "");
+	zsfree(compisuffix);
+	compisuffix = tmp;
+	sav = compsuffix[l];
+	compsuffix[l] = '\0';
+	tmp = ztrdup(compsuffix);
+	compsuffix[l] = sav;
+	zsfree(compsuffix);
+	compsuffix = tmp;
+    }
+}
+
+/**/
+void
+restrict_range(int b, int e)
+{
+    int wl = arrlen(compwords) - 1;
+
+    if (wl && b >= 0 && e >= 0 && (b > 0 || e < wl)) {
+	int i;
+	char **p, **q, **pp;
+
+	if (e > wl)
+	    e = wl;
+
+	i = e - b + 1;
+	p = (char **) zcalloc((i + 1) * sizeof(char *));
+
+	for (q = p, pp = compwords + b; i; i--, q++, pp++)
+	    *q = ztrdup(*pp);
+	freearray(compwords);
+	compwords = p;
+	compcurrent -= b;
+    }
+}
+
+static int
+do_comp_vars(int test, int na, char *sa, int nb, char *sb, int mod)
+{
+    switch (test) {
+    case CVT_RANGENUM:
+	{
+	    int l = arrlen(compwords);
+
+	    if (na < 0)
+		na += l;
+	    else
+		na--;
+	    if (nb < 0)
+		nb += l;
+	    else
+		nb--;
+
+	    if (compcurrent - 1 < na || compcurrent - 1 > nb)
+		return 0;
+	    if (mod)
+		restrict_range(na, nb);
+	    return 1;
+	}
+    case CVT_RANGEPAT:
+	{
+	    char **p;
+	    int i, l = arrlen(compwords), t = 0, b = 0, e = l - 1;
+	    Patprog pp;
+
+	    i = compcurrent - 1;
+	    if (i < 0 || i >= l)
+		return 0;
+
+	    singsub(&sa);
+	    pp = patcompile(sa, PAT_STATIC, NULL);
+
+	    for (i--, p = compwords + i; i >= 0; p--, i--) {
+		if (pattry(pp, *p)) {
+		    b = i + 1;
+		    t = 1;
+		    break;
+		}
+	    }
+	    if (t && sb) {
+		int tt = 0;
+
+		singsub(&sb);
+		pp = patcompile(sb, PAT_STATIC, NULL);
+
+		for (i++, p = compwords + i; i < l; p++, i++) {
+		    if (pattry(pp, *p)) {
+			e = i - 1;
+			tt = 1;
+			break;
+		    }
+		}
+		if (tt && i < compcurrent)
+		    t = 0;
+	    }
+	    if (e < b)
+		t = 0;
+	    if (t && mod)
+		restrict_range(b, e);
+	    return t;
+	}
+    case CVT_PRENUM:
+    case CVT_SUFNUM:
+	if (!na)
+	    return 1;
+	if (na > 0 &&
+	    strlen(test == CVT_PRENUM ? compprefix : compsuffix) >= na) {
+	    if (mod) {
+		if (test == CVT_PRENUM)
+		    ignore_prefix(na);
+		else
+		    ignore_suffix(na);
+		return 1;
+	    }
+	    return 0;
+	}
+    case CVT_PREPAT:
+    case CVT_SUFPAT:
+	{
+	    Patprog pp;
+
+	    if (!na)
+		return 0;
+
+	    if (!(pp = patcompile(sa, PAT_STATIC, 0)))
+		return 0;
+
+	    if (test == CVT_PREPAT) {
+		int l, add;
+		char *p, sav;
+
+		if (!(l = strlen(compprefix)))
+		    return 0;
+		if (na < 0) {
+		    p = compprefix + l;
+		    na = -na;
+		    add = -1;
+		} else {
+		    p = compprefix + 1;
+		    add = 1;
+		}
+		for (; l; l--, p += add) {
+		    sav = *p;
+		    *p = '\0';
+		    test = pattry(pp, compprefix);
+		    *p = sav;
+		    if (test && !--na)
+			break;
+		}
+		if (!l)
+		    return 0;
+		if (mod)
+		    ignore_prefix(p - compprefix);
+	    } else {
+		int l, ol, add;
+		char *p;
+
+		if (!(ol = l = strlen(compsuffix)))
+		    return 0;
+		if (na < 0) {
+		    p = compsuffix;
+		    na = -na;
+		    add = 1;
+		} else {
+		    p = compsuffix + l - 1;
+		    add = -1;
+		}
+		for (; l; l--, p += add)
+		    if (pattry(pp, p) && !--na)
+			break;
+
+		if (!l)
+		    return 0;
+		if (mod)
+		    ignore_suffix(ol - (p - compsuffix));
+	    }
+	    return 1;
+	}
+    }
+    return 0;
+}
+
+/**/
+static int
+bin_compset(char *name, char **argv, char *ops, int func)
+{
+    int test = 0, na = 0, nb = 0;
+    char *sa = NULL, *sb = NULL;
+
+    if (incompfunc != 1) {
+	zerrnam(name, "can only be called from completion function", NULL, 0);
+	return 1;
+    }
+    if (argv[0][0] != '-') {
+	zerrnam(name, "missing option", NULL, 0);
+	return 1;
+    }
+    switch (argv[0][1]) {
+    case 'n': test = CVT_RANGENUM; break;
+    case 'N': test = CVT_RANGEPAT; break;
+    case 'p': test = CVT_PRENUM; break;
+    case 'P': test = CVT_PREPAT; break;
+    case 's': test = CVT_SUFNUM; break;
+    case 'S': test = CVT_SUFPAT; break;
+    case 'q': return set_comp_sep();
+    default:
+	zerrnam(name, "bad option -%c", NULL, argv[0][1]);
+	return 1;
+    }
+    if (argv[0][2]) {
+	sa = argv[0] + 2;
+	sb = argv[1];
+	na = 2;
+    } else {
+	if (!(sa = argv[1])) {
+	    zerrnam(name, "missing string for option -%c", NULL, argv[0][1]);
+	    return 1;
+	}
+	sb = argv[2];
+	na = 3;
+    }
+    if (((test == CVT_PRENUM || test == CVT_SUFNUM) ? !!sb :
+	 (sb && argv[na]))) {
+	zerrnam(name, "too many arguments", NULL, 0);
+	return 1;
+    }
+    switch (test) {
+    case CVT_RANGENUM:
+	na = atoi(sa);
+	nb = (sb ? atoi(sb) : -1);
+	break;
+    case CVT_RANGEPAT:
+	tokenize(sa);
+	sa = rembslash(sa);
+	remnulargs(sa);
+	if (sb) {
+	    tokenize(sb);
+	    sb = rembslash(sb);
+	    remnulargs(sb);
+	}
+	break;
+    case CVT_PRENUM:
+    case CVT_SUFNUM:
+	na = atoi(sa);
+	break;
+    case CVT_PREPAT:
+    case CVT_SUFPAT:
+	if (sb) {
+	    na = atoi(sa);
+	    sa = sb;
+	} else
+	    na = -1;
+	tokenize(sa);
+	sa = rembslash(sa);
+	remnulargs(sa);
+	break;
+    }
+    return !do_comp_vars(test, na, sa, nb, sb, 1);
+}
+
+/* Definitions for the special parameters. Note that these have to match the
+ * order of the CP_* bits in comp.h */
+
+#define VAL(X) ((void *) (&(X)))
+struct compparam {
+    char *name;
+    int type;
+    void *var, *set, *get;
+};
+
+static struct compparam comprparams[] = {
+    { "words", PM_ARRAY, VAL(compwords), NULL, NULL },
+    { "CURRENT", PM_INTEGER, VAL(compcurrent), NULL, NULL },
+    { "PREFIX", PM_SCALAR, VAL(compprefix), NULL, NULL },
+    { "SUFFIX", PM_SCALAR, VAL(compsuffix), NULL, NULL },
+    { "IPREFIX", PM_SCALAR, VAL(compiprefix), NULL, NULL },
+    { "ISUFFIX", PM_SCALAR, VAL(compisuffix), NULL, NULL },
+    { "QIPREFIX", PM_SCALAR | PM_READONLY, VAL(compqiprefix), NULL, NULL },
+    { "QISUFFIX", PM_SCALAR | PM_READONLY, VAL(compqisuffix), NULL, NULL },
+    { NULL, 0, NULL, NULL, NULL }
+};
+
+static struct compparam compkparams[] = {
+    { "nmatches", PM_INTEGER | PM_READONLY, NULL, NULL, VAL(get_nmatches) },
+    { "matcher", PM_INTEGER, VAL(compmatcher), NULL, NULL },
+    { "matcher_string", PM_SCALAR, VAL(compmatcherstr), NULL, NULL },
+    { "total_matchers", PM_INTEGER, VAL(compmatchertot), NULL, NULL },
+    { "context", PM_SCALAR, VAL(compcontext), NULL, NULL },
+    { "parameter", PM_SCALAR, VAL(compparameter), NULL, NULL },
+    { "redirect", PM_SCALAR, VAL(compredirect), NULL, NULL },
+    { "quote", PM_SCALAR | PM_READONLY, VAL(compquote), NULL, NULL },
+    { "quoting", PM_SCALAR | PM_READONLY, VAL(compquoting), NULL, NULL },
+    { "restore", PM_SCALAR, VAL(comprestore), NULL, NULL },
+    { "list", PM_SCALAR, NULL, VAL(set_complist), VAL(get_complist) },
+    { "force_list", PM_SCALAR, VAL(compforcelist), NULL, NULL },
+    { "insert", PM_SCALAR, VAL(compinsert), NULL, NULL },
+    { "exact", PM_SCALAR, VAL(compexact), NULL, NULL },
+    { "exact_string", PM_SCALAR, VAL(compexactstr), NULL, NULL },
+    { "pattern_match", PM_SCALAR, VAL(comppatmatch), NULL, NULL },
+    { "pattern_insert", PM_SCALAR, VAL(comppatinsert), NULL, NULL },
+    { "unambiguous", PM_SCALAR | PM_READONLY, NULL, NULL, VAL(get_unambig) },
+    { "unambiguous_cursor", PM_INTEGER | PM_READONLY, NULL, NULL,
+      VAL(get_unambig_curs) },
+    { "list_max", PM_INTEGER, VAL(complistmax), NULL, NULL },
+    { "last_prompt", PM_SCALAR, VAL(complastprompt), NULL, NULL },
+    { "to_end", PM_SCALAR, VAL(comptoend), NULL, NULL },
+    { "old_list", PM_SCALAR, VAL(compoldlist), NULL, NULL },
+    { "old_insert", PM_SCALAR, VAL(compoldins), NULL, NULL },
+    { "vared", PM_SCALAR, VAL(compvared), NULL, NULL },
+    { "alternate_nmatches", PM_INTEGER | PM_READONLY, NULL, NULL, VAL(get_anmatches) },
+    { "list_lines", PM_INTEGER | PM_READONLY, NULL, NULL, VAL(get_listlines) },
+    { NULL, 0, NULL, NULL, NULL }
+};
+
+#define COMPSTATENAME "compstate"
+
+static void
+addcompparams(struct compparam *cp, Param *pp)
+{
+    for (; cp->name; cp++, pp++) {
+	Param pm = createparam(cp->name,
+			       cp->type |PM_SPECIAL|PM_REMOVABLE|PM_LOCAL);
+	if (!pm)
+	    pm = (Param) paramtab->getnode(paramtab, cp->name);
+	DPUTS(!pm, "param not set in addcompparams");
+
+	*pp = pm;
+	pm->level = locallevel + 1;
+	if ((pm->u.data = cp->var)) {
+	    switch(PM_TYPE(cp->type)) {
+	    case PM_SCALAR:
+		pm->sets.cfn = strvarsetfn;
+		pm->gets.cfn = strvargetfn;
+		break;
+	    case PM_INTEGER:
+		pm->sets.ifn = intvarsetfn;
+		pm->gets.ifn = intvargetfn;
+		pm->ct = 10;
+		break;
+	    case PM_ARRAY:
+		pm->sets.afn = arrvarsetfn;
+		pm->gets.afn = arrvargetfn;
+		break;
+	    }
+	} else {
+	    pm->sets.cfn = (void (*) _((Param, char *))) cp->set;
+	    pm->gets.cfn = (char *(*) _((Param))) cp->get;
+	}
+	pm->unsetfn = compunsetfn;
+    }
+}
+
+/**/
+void
+makecompparams(void)
+{
+    Param cpm;
+    HashTable tht;
+
+    addcompparams(comprparams, comprpms);
+
+    if (!(cpm = createparam(COMPSTATENAME,
+			    PM_SPECIAL|PM_REMOVABLE|PM_LOCAL|PM_HASHED)))
+	cpm = (Param) paramtab->getnode(paramtab, COMPSTATENAME);
+    DPUTS(!cpm, "param not set in makecompparams");
+
+    comprpms[CPN_COMPSTATE] = cpm;
+    tht = paramtab;
+    cpm->level = locallevel;
+    cpm->gets.hfn = get_compstate;
+    cpm->sets.hfn = set_compstate;
+    cpm->unsetfn = compunsetfn;
+    cpm->u.hash = paramtab = newparamtable(31, COMPSTATENAME);
+    addcompparams(compkparams, compkpms);
+    paramtab = tht;
+}
+
+/**/
+static HashTable
+get_compstate(Param pm)
+{
+    return pm->u.hash;
+}
+
+/**/
+static void
+set_compstate(Param pm, HashTable ht)
+{
+    struct compparam *cp;
+    Param *pp;
+    HashNode hn;
+    int i;
+    struct value v;
+    char *str;
+
+    for (i = 0; i < ht->hsize; i++)
+	for (hn = ht->nodes[i]; hn; hn = hn->next)
+	    for (cp = compkparams,
+		 pp = compkpms; cp->name; cp++, pp++)
+		if (!strcmp(hn->nam, cp->name)) {
+		    v.isarr = v.inv = v.a = 0;
+		    v.b = -1;
+		    v.arr = NULL;
+		    v.pm = (Param) hn;
+		    if (cp->type == PM_INTEGER)
+			*((zlong *) cp->var) = getintvalue(&v);
+		    else if ((str = getstrvalue(&v))) {
+			zsfree(*((char **) cp->var));
+			*((char **) cp->var) = ztrdup(str);
+		    }
+		    (*pp)->flags &= ~PM_UNSET;
+
+		    break;
+		}
+    deleteparamtable(ht);
+}
+
+/**/
+static zlong
+get_nmatches(Param pm)
+{
+    return num_matches(1);
+}
+
+/**/
+static zlong
+get_anmatches(Param pm)
+{
+    return num_matches(0);
+}
+
+/**/
+static zlong
+get_listlines(Param pm)
+{
+    return list_lines();
+}
+
+/**/
+static void
+set_complist(Param pm, char *v)
+{
+    comp_list(v);
+}
+
+/**/
+static char *
+get_complist(Param pm)
+{
+    return complist;
+}
+
+/**/
+static char *
+get_unambig(Param pm)
+{
+    return unambig_data(NULL);
+}
+
+/**/
+static zlong
+get_unambig_curs(Param pm)
+{
+    int c;
+
+    unambig_data(&c);
+
+    return c;
+}
+
+/**/
+static void
+compunsetfn(Param pm, int exp)
+{
+    if (exp) {
+	if (PM_TYPE(pm->flags) == PM_SCALAR) {
+	    zsfree(*((char **) pm->u.data));
+	    *((char **) pm->u.data) = ztrdup("");
+	} else if (PM_TYPE(pm->flags) == PM_ARRAY) {
+	    freearray(*((char ***) pm->u.data));
+	    *((char ***) pm->u.data) = zcalloc(sizeof(char *));
+	}
+	pm->flags |= PM_UNSET;
+    }
+}
+
+/**/
+void
+comp_setunset(int rset, int runset, int kset, int kunset)
+{
+    Param *p;
+
+    if (comprpms && (rset >= 0 || runset >= 0)) {
+	for (p = comprpms; rset || runset; rset >>= 1, runset >>= 1, p++) {
+	    if (rset & 1)
+		(*p)->flags &= ~PM_UNSET;
+	    if (runset & 1)
+		(*p)->flags |= PM_UNSET;
+	}
+    }
+    if (comprpms && (kset >= 0 || kunset >= 0)) {
+	for (p = compkpms; kset || kunset; kset >>= 1, kunset >>= 1, p++) {
+	    if (kset & 1)
+		(*p)->flags &= ~PM_UNSET;
+	    if (kunset & 1)
+		(*p)->flags |= PM_UNSET;
+	}
+    }
+}
+
+/**/
+static int
+comp_wrapper(List list, FuncWrap w, char *name)
+{
+    if (incompfunc != 1)
+	return 1;
+    else {
+	char *orest, *opre, *osuf, *oipre, *oisuf, **owords;
+	char *oqipre, *oqisuf, *oq, *oqi;
+	zlong ocur;
+	unsigned int runset = 0, kunset = 0, m, sm;
+	Param *pp;
+
+	m = CP_WORDS | CP_CURRENT | CP_PREFIX | CP_SUFFIX | 
+	    CP_IPREFIX | CP_ISUFFIX | CP_QIPREFIX | CP_QISUFFIX;
+	for (pp = comprpms, sm = 1; m; pp++, m >>= 1, sm <<= 1) {
+	    if ((m & 1) && ((*pp)->flags & PM_UNSET))
+		runset |= sm;
+	}
+	if (compkpms[CPN_RESTORE]->flags & PM_UNSET)
+	    kunset = CP_RESTORE;
+	orest = comprestore;
+	comprestore = ztrdup("auto");
+	ocur = compcurrent;
+	opre = dupstring(compprefix);
+	osuf = dupstring(compsuffix);
+	oipre = dupstring(compiprefix);
+	oisuf = dupstring(compisuffix);
+	oqipre = dupstring(compqiprefix);
+	oqisuf = dupstring(compqisuffix);
+	oq = dupstring(compquote);
+	oqi = dupstring(compquoting);
+
+	HEAPALLOC {
+	    owords = arrdup(compwords);
+	} LASTALLOC;
+
+	runshfunc(list, w, name);
+
+	if (comprestore && !strcmp(comprestore, "auto")) {
+	    compcurrent = ocur;
+	    zsfree(compprefix);
+	    compprefix = ztrdup(opre);
+	    zsfree(compsuffix);
+	    compsuffix = ztrdup(osuf);
+	    zsfree(compiprefix);
+	    compiprefix = ztrdup(oipre);
+	    zsfree(compisuffix);
+	    compisuffix = ztrdup(oisuf);
+	    zsfree(compqiprefix);
+	    compqiprefix = ztrdup(oqipre);
+	    zsfree(compqisuffix);
+	    compqisuffix = ztrdup(oqisuf);
+	    zsfree(compquote);
+	    compquote = ztrdup(oq);
+	    zsfree(compquoting);
+	    compquoting = ztrdup(oqi);
+	    freearray(compwords);
+	    PERMALLOC {
+		compwords = arrdup(owords);
+	    } LASTALLOC;
+	    comp_setunset(CP_COMPSTATE |
+			  (~runset & (CP_WORDS | CP_CURRENT | CP_PREFIX |
+				     CP_SUFFIX | CP_IPREFIX | CP_ISUFFIX |
+				     CP_QIPREFIX | CP_QISUFFIX)),
+			  (runset & CP_ALLREALS),
+			  (~kunset & CP_RESTORE), (kunset & CP_ALLKEYS));
+	} else
+	    comp_setunset(CP_COMPSTATE, 0, (~kunset & CP_RESTORE),
+			  (kunset & CP_RESTORE));
+	zsfree(comprestore);
+	comprestore = orest;
+
+	return 0;
+    }
+}
+
+/**/
+static int
+comp_check(void)
+{
+    if (incompfunc != 1) {
+	zerr("condition can only be used in completion function", NULL, 0);
+	return 0;
+    }
+    return 1;
+}
+
+/**/
+static int
+cond_psfix(char **a, int id)
+{
+    if (comp_check()) {
+	if (a[1])
+	    return do_comp_vars(id, cond_val(a, 0), cond_str(a, 1, 1),
+				0, NULL, 0);
+	else
+	    return do_comp_vars(id, -1, cond_str(a, 0, 1), 0, NULL, 0);
+    }
+    return 0;
+}
+
+/**/
+static int
+cond_range(char **a, int id)
+{
+    return do_comp_vars(CVT_RANGEPAT, 0, cond_str(a, 0, 1), 0,
+			(id ? cond_str(a, 1, 1) : NULL), 0);
+}
+
+/**/
+static void
+cmsetfn(Param pm, char **v)
+{
+    set_gmatcher(pm->nam, v);
+}
+
+/**/
+static char **
+cmgetfn(Param pm)
+{
+    int num;
+    Cmlist p;
+    char **ret, **q;
+
+    for (num = 0, p = cmatcher; p; p = p->next, num++);
+
+    ret = (char **) zhalloc((num + 1) * sizeof(char *));
+
+    for (q = ret, p = cmatcher; p; p = p->next, q++)
+	*q = dupstring(p->str);
+    *q = NULL;
+
+    return ret;
+}
+
+/**/
+static void
+cmunsetfn(Param pm, int exp)
+{
+    char *dummy[1];
+
+    dummy[0] = NULL;
+    set_gmatcher(pm->nam, dummy);
+}
+
+static struct builtin bintab[] = {
+    BUILTIN("compadd", 0, bin_compadd, 0, -1, 0, NULL, NULL),
+    BUILTIN("compset", 0, bin_compset, 1, 3, 0, NULL, NULL),
+};
+
+static struct conddef cotab[] = {
+    CONDDEF("prefix", 0, cond_psfix, 1, 2, CVT_PREPAT),
+    CONDDEF("suffix", 0, cond_psfix, 1, 2, CVT_SUFPAT),
+    CONDDEF("between", 0, cond_range, 2, 2, 1),
+    CONDDEF("after", 0, cond_range, 1, 1, 0),
+};
+
+static struct funcwrap wrapper[] = {
+    WRAPDEF(comp_wrapper),
+};
+
+static struct paramdef patab[] = {
+    PARAMDEF("compmatchers", PM_ARRAY|PM_SPECIAL, NULL, cmsetfn, cmgetfn, cmunsetfn)
+};
+
+/**/
+int
+setup_complete(Module m)
+{
+    makecompparamsptr = makecompparams;
+    comp_setunsetptr = comp_setunset;
+
+    return 0;
+}
+
+/**/
+int
+boot_complete(Module m)
+{
+    if (!(addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab)) |
+	  addconddefs(m->nam, cotab, sizeof(cotab)/sizeof(*cotab)) |
+	  addparamdefs(m->nam, patab, sizeof(patab)/sizeof(*patab)) |
+	  !addwrapper(m, wrapper)))
+	return 1;
+    return 0;
+}
+
+#ifdef MODULE
+
+/**/
+int
+cleanup_complete(Module m)
+{
+    deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
+    deleteconddefs(m->nam, cotab, sizeof(cotab)/sizeof(*cotab));
+    deleteparamdefs(m->nam, patab, sizeof(patab)/sizeof(*patab));
+    deletewrapper(m, wrapper);
+    return 0;
+}
+
+/**/
+int
+finish_complete(Module m)
+{
+    makecompparamsptr = NULL;
+    comp_setunsetptr = NULL;
+
+    return 0;
+}
+
+#endif
diff --git a/Src/Zle/complete.mdd b/Src/Zle/complete.mdd
new file mode 100644
index 000000000..628058e2a
--- /dev/null
+++ b/Src/Zle/complete.mdd
@@ -0,0 +1,11 @@
+hasexport=1
+
+moddeps="zle"
+
+autobins="compgen compadd compset"
+
+autoprefixconds="prefix suffix between after"
+
+autoparams="compmatchers"
+
+objects="complete.o"
diff --git a/Src/Zle/zleparameter.c b/Src/Zle/zleparameter.c
new file mode 100644
index 000000000..8a5bc0bc2
--- /dev/null
+++ b/Src/Zle/zleparameter.c
@@ -0,0 +1,257 @@
+/*
+ * zleparameter.c - parameter interface to zle internals
+ *
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 1999 Sven Wischnowsky
+ * All rights reserved.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and to distribute modified versions of this software for any
+ * purpose, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * In no event shall Sven Wischnowsky or the Zsh Development Group be liable
+ * to any party for direct, indirect, special, incidental, or consequential
+ * damages arising out of the use of this software and its documentation,
+ * even if Sven Wischnowsky and the Zsh Development Group have been advised of
+ * the possibility of such damage.
+ *
+ * Sven Wischnowsky and the Zsh Development Group specifically disclaim any
+ * warranties, including, but not limited to, the implied warranties of
+ * merchantability and fitness for a particular purpose.  The software
+ * provided hereunder is on an "as is" basis, and Sven Wischnowsky and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+
+#include "zleparameter.mdh"
+#include "zleparameter.pro"
+
+/* Empty dummy function for special hash parameters. */
+
+/**/
+static void
+shempty(void)
+{
+}
+
+/* Create a simple special hash parameter. */
+
+/**/
+static Param
+createspecialhash(char *name, GetNodeFunc get, ScanTabFunc scan)
+{
+    Param pm;
+    HashTable ht;
+
+    if (!(pm = createparam(name, PM_SPECIAL|PM_HIDE|PM_REMOVABLE|PM_HASHED)))
+	return NULL;
+
+    pm->level = pm->old ? locallevel : 0;
+    pm->gets.hfn = hashgetfn;
+    pm->sets.hfn = hashsetfn;
+    pm->unsetfn = stdunsetfn;
+    pm->u.hash = ht = newhashtable(7, name, NULL);
+
+    ht->hash        = hasher;
+    ht->emptytable  = (TableFunc) shempty;
+    ht->filltable   = NULL;
+    ht->addnode     = (AddNodeFunc) shempty;
+    ht->getnode     = ht->getnode2 = get;
+    ht->removenode  = (RemoveNodeFunc) shempty;
+    ht->disablenode = NULL;
+    ht->enablenode  = NULL;
+    ht->freenode    = (FreeNodeFunc) shempty;
+    ht->printnode   = printparamnode;
+    ht->scantab     = scan;
+
+    return pm;
+}
+
+/* Functions for the zlewidgets special parameter. */
+
+/**/
+static char *
+widgetstr(Widget w)
+{
+    if (w->flags & WIDGET_INT)
+	return dupstring("builtin");
+    if (w->flags & WIDGET_NCOMP) {
+	char *t = (char *) zhalloc(13 + strlen(w->u.comp.wid) +
+				   strlen(w->u.comp.func));
+
+	strcpy(t, "completion:");
+	strcat(t, w->u.comp.wid);
+	strcat(t, ":");
+	strcat(t, w->u.comp.func);
+
+	return t;
+    }
+    return dyncat("user:", w->u.fnnam);
+}
+
+/**/
+static HashNode
+getpmwidgets(HashTable ht, char *name)
+{
+    Param pm = NULL;
+    Thingy th;
+
+    HEAPALLOC {
+	pm = (Param) zhalloc(sizeof(struct param));
+	pm->nam = dupstring(name);
+	pm->flags = PM_SCALAR | PM_READONLY;
+	pm->sets.cfn = NULL;
+	pm->gets.cfn = strgetfn;
+	pm->unsetfn = NULL;
+	pm->ct = 0;
+	pm->env = NULL;
+	pm->ename = NULL;
+	pm->old = NULL;
+	pm->level = 0;
+	if ((th = (Thingy) thingytab->getnode(thingytab, name)) &&
+	    !(th->flags & DISABLED))
+	    pm->u.str = widgetstr(th->widget);
+	else {
+	    pm->u.str = dupstring("");
+	    pm->flags |= PM_UNSET;
+	}
+    } LASTALLOC;
+
+    return (HashNode) pm;
+}
+
+/**/
+static void
+scanpmwidgets(HashTable ht, ScanFunc func, int flags)
+{
+    struct param pm;
+    int i;
+    HashNode hn;
+
+    pm.flags = PM_SCALAR | PM_READONLY;
+    pm.sets.cfn = NULL;
+    pm.gets.cfn = strgetfn;
+    pm.unsetfn = NULL;
+    pm.ct = 0;
+    pm.env = NULL;
+    pm.ename = NULL;
+    pm.old = NULL;
+    pm.level = 0;
+
+    for (i = 0; i < thingytab->hsize; i++)
+	for (hn = thingytab->nodes[i]; hn; hn = hn->next) {
+	    pm.nam = hn->nam;
+	    if (func != scancountparams)
+		pm.u.str = widgetstr(((Thingy) hn)->widget);
+	    func((HashNode) &pm, flags);
+	}
+}
+
+/* Functions for the zlekeymaps special parameter. */
+
+static char **
+keymapsgetfn(Param pm)
+{
+    int i;
+    HashNode hn;
+    char **ret, **p;
+
+    p = ret = (char **) zhalloc((keymapnamtab->ct + 1) * sizeof(char *));
+
+    for (i = 0; i < keymapnamtab->hsize; i++)
+	for (hn = keymapnamtab->nodes[i]; hn; hn = hn->next)
+	    *p++ = dupstring(hn->nam);
+    *p = NULL;
+
+    return ret;
+}
+
+/* Table for defined parameters. */
+
+struct pardef {
+    char *name;
+    int flags;
+    GetNodeFunc getnfn;
+    ScanTabFunc scantfn;
+    void (*hsetfn) _((Param, HashTable));
+    void (*setfn) _((Param, char **));
+    char **(*getfn) _((Param));
+    void (*unsetfn) _((Param, int));
+    Param pm;
+};
+
+static struct pardef partab[] = {
+    { "zlewidgets", PM_READONLY,
+      getpmwidgets, scanpmwidgets, hashsetfn,
+      NULL, NULL, stdunsetfn, NULL },
+    { "zlekeymaps", PM_ARRAY|PM_HIDE|PM_SPECIAL|PM_READONLY,
+      NULL, NULL, NULL,
+      arrsetfn, keymapsgetfn, stdunsetfn, NULL },
+    { NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
+};
+
+/**/
+int
+setup_zleparameter(Module m)
+{
+    return 0;
+}
+
+/**/
+int
+boot_zleparameter(Module m)
+{
+    struct pardef *def;
+
+    for (def = partab; def->name; def++) {
+	unsetparam(def->name);
+
+	if (def->getnfn) {
+	    if (!(def->pm = createspecialhash(def->name, def->getnfn,
+					      def->scantfn)))
+		return 1;
+	    def->pm->flags |= def->flags;
+	    if (def->hsetfn)
+		def->pm->sets.hfn = def->hsetfn;
+	} else {
+	    if (!(def->pm = createparam(def->name, def->flags)))
+		return 1;
+	    def->pm->sets.afn = def->setfn;
+	    def->pm->gets.afn = def->getfn;
+	    def->pm->unsetfn = def->unsetfn;
+	}
+    }
+    return 0;
+}
+
+#ifdef MODULE
+
+/**/
+int
+cleanup_zleparameter(Module m)
+{
+    Param pm;
+    struct pardef *def;
+
+    for (def = partab; def->name; def++) {
+	if ((pm = (Param) paramtab->getnode(paramtab, def->name)) &&
+	    pm == def->pm) {
+	    pm->flags &= ~PM_READONLY;
+	    unsetparam_pm(pm, 0, 1);
+	}
+    }
+    return 0;
+}
+
+/**/
+int
+finish_zleparameter(Module m)
+{
+    return 0;
+}
+
+#endif
diff --git a/Src/Zle/zleparameter.mdd b/Src/Zle/zleparameter.mdd
new file mode 100644
index 000000000..f9d528661
--- /dev/null
+++ b/Src/Zle/zleparameter.mdd
@@ -0,0 +1,5 @@
+moddeps="zle"
+
+autoparams="zlewidgets zlekeymaps"
+
+objects="zleparameter.o"