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diff --git a/third_party/heimdal/lib/libedit/src/chared.c b/third_party/heimdal/lib/libedit/src/chared.c
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+/* $NetBSD: chared.c,v 1.56 2016/05/22 19:44:26 christos Exp $ */
+
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Christos Zoulas of Cornell University.
+ *
+ * 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.
+ */
+
+#include "config.h"
+#if !defined(lint) && !defined(SCCSID)
+#if 0
+static char sccsid[] = "@(#)chared.c 8.1 (Berkeley) 6/4/93";
+#else
+__RCSID("$NetBSD: chared.c,v 1.56 2016/05/22 19:44:26 christos Exp $");
+#endif
+#endif /* not lint && not SCCSID */
+
+/*
+ * chared.c: Character editor utilities
+ */
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "el.h"
+#include "common.h"
+#include "fcns.h"
+
+/* value to leave unused in line buffer */
+#define EL_LEAVE 2
+
+/* cv_undo():
+ * Handle state for the vi undo command
+ */
+libedit_private void
+cv_undo(EditLine *el)
+{
+ c_undo_t *vu = &el->el_chared.c_undo;
+ c_redo_t *r = &el->el_chared.c_redo;
+ size_t size;
+
+ /* Save entire line for undo */
+ size = (size_t)(el->el_line.lastchar - el->el_line.buffer);
+ vu->len = (ssize_t)size;
+ vu->cursor = (int)(el->el_line.cursor - el->el_line.buffer);
+ (void)memcpy(vu->buf, el->el_line.buffer, size * sizeof(*vu->buf));
+
+ /* save command info for redo */
+ r->count = el->el_state.doingarg ? el->el_state.argument : 0;
+ r->action = el->el_chared.c_vcmd.action;
+ r->pos = r->buf;
+ r->cmd = el->el_state.thiscmd;
+ r->ch = el->el_state.thisch;
+}
+
+/* cv_yank():
+ * Save yank/delete data for paste
+ */
+libedit_private void
+cv_yank(EditLine *el, const wchar_t *ptr, int size)
+{
+ c_kill_t *k = &el->el_chared.c_kill;
+
+ (void)memcpy(k->buf, ptr, (size_t)size * sizeof(*k->buf));
+ k->last = k->buf + size;
+}
+
+
+/* c_insert():
+ * Insert num characters
+ */
+libedit_private void
+c_insert(EditLine *el, int num)
+{
+ wchar_t *cp;
+
+ if (el->el_line.lastchar + num >= el->el_line.limit) {
+ if (!ch_enlargebufs(el, (size_t)num))
+ return; /* can't go past end of buffer */
+ }
+
+ if (el->el_line.cursor < el->el_line.lastchar) {
+ /* if I must move chars */
+ for (cp = el->el_line.lastchar; cp >= el->el_line.cursor; cp--)
+ cp[num] = *cp;
+ }
+ el->el_line.lastchar += num;
+}
+
+
+/* c_delafter():
+ * Delete num characters after the cursor
+ */
+libedit_private void
+c_delafter(EditLine *el, int num)
+{
+
+ if (el->el_line.cursor + num > el->el_line.lastchar)
+ num = (int)(el->el_line.lastchar - el->el_line.cursor);
+
+ if (el->el_map.current != el->el_map.emacs) {
+ cv_undo(el);
+ cv_yank(el, el->el_line.cursor, num);
+ }
+
+ if (num > 0) {
+ wchar_t *cp;
+
+ for (cp = el->el_line.cursor; cp <= el->el_line.lastchar; cp++)
+ *cp = cp[num];
+
+ el->el_line.lastchar -= num;
+ }
+}
+
+
+/* c_delafter1():
+ * Delete the character after the cursor, do not yank
+ */
+libedit_private void
+c_delafter1(EditLine *el)
+{
+ wchar_t *cp;
+
+ for (cp = el->el_line.cursor; cp <= el->el_line.lastchar; cp++)
+ *cp = cp[1];
+
+ el->el_line.lastchar--;
+}
+
+
+/* c_delbefore():
+ * Delete num characters before the cursor
+ */
+libedit_private void
+c_delbefore(EditLine *el, int num)
+{
+
+ if (el->el_line.cursor - num < el->el_line.buffer)
+ num = (int)(el->el_line.cursor - el->el_line.buffer);
+
+ if (el->el_map.current != el->el_map.emacs) {
+ cv_undo(el);
+ cv_yank(el, el->el_line.cursor - num, num);
+ }
+
+ if (num > 0) {
+ wchar_t *cp;
+
+ for (cp = el->el_line.cursor - num;
+ cp <= el->el_line.lastchar;
+ cp++)
+ *cp = cp[num];
+
+ el->el_line.lastchar -= num;
+ }
+}
+
+
+/* c_delbefore1():
+ * Delete the character before the cursor, do not yank
+ */
+libedit_private void
+c_delbefore1(EditLine *el)
+{
+ wchar_t *cp;
+
+ for (cp = el->el_line.cursor - 1; cp <= el->el_line.lastchar; cp++)
+ *cp = cp[1];
+
+ el->el_line.lastchar--;
+}
+
+
+/* ce__isword():
+ * Return if p is part of a word according to emacs
+ */
+libedit_private int
+ce__isword(wint_t p)
+{
+ return iswalnum(p) || wcschr(L"*?_-.[]~=", p) != NULL;
+}
+
+
+/* cv__isword():
+ * Return if p is part of a word according to vi
+ */
+libedit_private int
+cv__isword(wint_t p)
+{
+ if (iswalnum(p) || p == L'_')
+ return 1;
+ if (iswgraph(p))
+ return 2;
+ return 0;
+}
+
+
+/* cv__isWord():
+ * Return if p is part of a big word according to vi
+ */
+libedit_private int
+cv__isWord(wint_t p)
+{
+ return !iswspace(p);
+}
+
+
+/* c__prev_word():
+ * Find the previous word
+ */
+libedit_private wchar_t *
+c__prev_word(wchar_t *p, wchar_t *low, int n, int (*wtest)(wint_t))
+{
+ p--;
+
+ while (n--) {
+ while ((p >= low) && !(*wtest)(*p))
+ p--;
+ while ((p >= low) && (*wtest)(*p))
+ p--;
+ }
+
+ /* cp now points to one character before the word */
+ p++;
+ if (p < low)
+ p = low;
+ /* cp now points where we want it */
+ return p;
+}
+
+
+/* c__next_word():
+ * Find the next word
+ */
+libedit_private wchar_t *
+c__next_word(wchar_t *p, wchar_t *high, int n, int (*wtest)(wint_t))
+{
+ while (n--) {
+ while ((p < high) && !(*wtest)(*p))
+ p++;
+ while ((p < high) && (*wtest)(*p))
+ p++;
+ }
+ if (p > high)
+ p = high;
+ /* p now points where we want it */
+ return p;
+}
+
+/* cv_next_word():
+ * Find the next word vi style
+ */
+libedit_private wchar_t *
+cv_next_word(EditLine *el, wchar_t *p, wchar_t *high, int n,
+ int (*wtest)(wint_t))
+{
+ int test;
+
+ while (n--) {
+ test = (*wtest)(*p);
+ while ((p < high) && (*wtest)(*p) == test)
+ p++;
+ /*
+ * vi historically deletes with cw only the word preserving the
+ * trailing whitespace! This is not what 'w' does..
+ */
+ if (n || el->el_chared.c_vcmd.action != (DELETE|INSERT))
+ while ((p < high) && iswspace(*p))
+ p++;
+ }
+
+ /* p now points where we want it */
+ if (p > high)
+ return high;
+ else
+ return p;
+}
+
+
+/* cv_prev_word():
+ * Find the previous word vi style
+ */
+libedit_private wchar_t *
+cv_prev_word(wchar_t *p, wchar_t *low, int n, int (*wtest)(wint_t))
+{
+ int test;
+
+ p--;
+ while (n--) {
+ while ((p > low) && iswspace(*p))
+ p--;
+ test = (*wtest)(*p);
+ while ((p >= low) && (*wtest)(*p) == test)
+ p--;
+ }
+ p++;
+
+ /* p now points where we want it */
+ if (p < low)
+ return low;
+ else
+ return p;
+}
+
+
+/* cv_delfini():
+ * Finish vi delete action
+ */
+libedit_private void
+cv_delfini(EditLine *el)
+{
+ int size;
+ int action = el->el_chared.c_vcmd.action;
+
+ if (action & INSERT)
+ el->el_map.current = el->el_map.key;
+
+ if (el->el_chared.c_vcmd.pos == 0)
+ /* sanity */
+ return;
+
+ size = (int)(el->el_line.cursor - el->el_chared.c_vcmd.pos);
+ if (size == 0)
+ size = 1;
+ el->el_line.cursor = el->el_chared.c_vcmd.pos;
+ if (action & YANK) {
+ if (size > 0)
+ cv_yank(el, el->el_line.cursor, size);
+ else
+ cv_yank(el, el->el_line.cursor + size, -size);
+ } else {
+ if (size > 0) {
+ c_delafter(el, size);
+ re_refresh_cursor(el);
+ } else {
+ c_delbefore(el, -size);
+ el->el_line.cursor += size;
+ }
+ }
+ el->el_chared.c_vcmd.action = NOP;
+}
+
+
+/* cv__endword():
+ * Go to the end of this word according to vi
+ */
+libedit_private wchar_t *
+cv__endword(wchar_t *p, wchar_t *high, int n, int (*wtest)(wint_t))
+{
+ int test;
+
+ p++;
+
+ while (n--) {
+ while ((p < high) && iswspace(*p))
+ p++;
+
+ test = (*wtest)(*p);
+ while ((p < high) && (*wtest)(*p) == test)
+ p++;
+ }
+ p--;
+ return p;
+}
+
+/* ch_init():
+ * Initialize the character editor
+ */
+libedit_private int
+ch_init(EditLine *el)
+{
+ el->el_line.buffer = el_malloc(EL_BUFSIZ *
+ sizeof(*el->el_line.buffer));
+ if (el->el_line.buffer == NULL)
+ return -1;
+
+ (void) memset(el->el_line.buffer, 0, EL_BUFSIZ *
+ sizeof(*el->el_line.buffer));
+ el->el_line.cursor = el->el_line.buffer;
+ el->el_line.lastchar = el->el_line.buffer;
+ el->el_line.limit = &el->el_line.buffer[EL_BUFSIZ - EL_LEAVE];
+
+ el->el_chared.c_undo.buf = el_malloc(EL_BUFSIZ *
+ sizeof(*el->el_chared.c_undo.buf));
+ if (el->el_chared.c_undo.buf == NULL)
+ return -1;
+ (void) memset(el->el_chared.c_undo.buf, 0, EL_BUFSIZ *
+ sizeof(*el->el_chared.c_undo.buf));
+ el->el_chared.c_undo.len = -1;
+ el->el_chared.c_undo.cursor = 0;
+ el->el_chared.c_redo.buf = el_malloc(EL_BUFSIZ *
+ sizeof(*el->el_chared.c_redo.buf));
+ if (el->el_chared.c_redo.buf == NULL)
+ return -1;
+ el->el_chared.c_redo.pos = el->el_chared.c_redo.buf;
+ el->el_chared.c_redo.lim = el->el_chared.c_redo.buf + EL_BUFSIZ;
+ el->el_chared.c_redo.cmd = ED_UNASSIGNED;
+
+ el->el_chared.c_vcmd.action = NOP;
+ el->el_chared.c_vcmd.pos = el->el_line.buffer;
+
+ el->el_chared.c_kill.buf = el_malloc(EL_BUFSIZ *
+ sizeof(*el->el_chared.c_kill.buf));
+ if (el->el_chared.c_kill.buf == NULL)
+ return -1;
+ (void) memset(el->el_chared.c_kill.buf, 0, EL_BUFSIZ *
+ sizeof(*el->el_chared.c_kill.buf));
+ el->el_chared.c_kill.mark = el->el_line.buffer;
+ el->el_chared.c_kill.last = el->el_chared.c_kill.buf;
+ el->el_chared.c_resizefun = NULL;
+ el->el_chared.c_resizearg = NULL;
+ el->el_chared.c_aliasfun = NULL;
+ el->el_chared.c_aliasarg = NULL;
+
+ el->el_map.current = el->el_map.key;
+
+ el->el_state.inputmode = MODE_INSERT; /* XXX: save a default */
+ el->el_state.doingarg = 0;
+ el->el_state.metanext = 0;
+ el->el_state.argument = 1;
+ el->el_state.lastcmd = ED_UNASSIGNED;
+
+ return 0;
+}
+
+/* ch_reset():
+ * Reset the character editor
+ */
+libedit_private void
+ch_reset(EditLine *el)
+{
+ el->el_line.cursor = el->el_line.buffer;
+ el->el_line.lastchar = el->el_line.buffer;
+
+ el->el_chared.c_undo.len = -1;
+ el->el_chared.c_undo.cursor = 0;
+
+ el->el_chared.c_vcmd.action = NOP;
+ el->el_chared.c_vcmd.pos = el->el_line.buffer;
+
+ el->el_chared.c_kill.mark = el->el_line.buffer;
+
+ el->el_map.current = el->el_map.key;
+
+ el->el_state.inputmode = MODE_INSERT; /* XXX: save a default */
+ el->el_state.doingarg = 0;
+ el->el_state.metanext = 0;
+ el->el_state.argument = 1;
+ el->el_state.lastcmd = ED_UNASSIGNED;
+
+ el->el_history.eventno = 0;
+}
+
+/* ch_enlargebufs():
+ * Enlarge line buffer to be able to hold twice as much characters.
+ * Returns 1 if successful, 0 if not.
+ */
+libedit_private int
+ch_enlargebufs(EditLine *el, size_t addlen)
+{
+ size_t sz, newsz;
+ wchar_t *newbuffer, *oldbuf, *oldkbuf;
+
+ sz = (size_t)(el->el_line.limit - el->el_line.buffer + EL_LEAVE);
+ newsz = sz * 2;
+ /*
+ * If newly required length is longer than current buffer, we need
+ * to make the buffer big enough to hold both old and new stuff.
+ */
+ if (addlen > sz) {
+ while(newsz - sz < addlen)
+ newsz *= 2;
+ }
+
+ /*
+ * Reallocate line buffer.
+ */
+ newbuffer = el_realloc(el->el_line.buffer, newsz * sizeof(*newbuffer));
+ if (!newbuffer)
+ return 0;
+
+ /* zero the newly added memory, leave old data in */
+ (void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
+
+ oldbuf = el->el_line.buffer;
+
+ el->el_line.buffer = newbuffer;
+ el->el_line.cursor = newbuffer + (el->el_line.cursor - oldbuf);
+ el->el_line.lastchar = newbuffer + (el->el_line.lastchar - oldbuf);
+ /* don't set new size until all buffers are enlarged */
+ el->el_line.limit = &newbuffer[sz - EL_LEAVE];
+
+ /*
+ * Reallocate kill buffer.
+ */
+ newbuffer = el_realloc(el->el_chared.c_kill.buf, newsz *
+ sizeof(*newbuffer));
+ if (!newbuffer)
+ return 0;
+
+ /* zero the newly added memory, leave old data in */
+ (void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
+
+ oldkbuf = el->el_chared.c_kill.buf;
+
+ el->el_chared.c_kill.buf = newbuffer;
+ el->el_chared.c_kill.last = newbuffer +
+ (el->el_chared.c_kill.last - oldkbuf);
+ el->el_chared.c_kill.mark = el->el_line.buffer +
+ (el->el_chared.c_kill.mark - oldbuf);
+
+ /*
+ * Reallocate undo buffer.
+ */
+ newbuffer = el_realloc(el->el_chared.c_undo.buf,
+ newsz * sizeof(*newbuffer));
+ if (!newbuffer)
+ return 0;
+
+ /* zero the newly added memory, leave old data in */
+ (void) memset(&newbuffer[sz], 0, (newsz - sz) * sizeof(*newbuffer));
+ el->el_chared.c_undo.buf = newbuffer;
+
+ newbuffer = el_realloc(el->el_chared.c_redo.buf,
+ newsz * sizeof(*newbuffer));
+ if (!newbuffer)
+ return 0;
+ el->el_chared.c_redo.pos = newbuffer +
+ (el->el_chared.c_redo.pos - el->el_chared.c_redo.buf);
+ el->el_chared.c_redo.lim = newbuffer +
+ (el->el_chared.c_redo.lim - el->el_chared.c_redo.buf);
+ el->el_chared.c_redo.buf = newbuffer;
+
+ if (!hist_enlargebuf(el, sz, newsz))
+ return 0;
+
+ /* Safe to set enlarged buffer size */
+ el->el_line.limit = &el->el_line.buffer[newsz - EL_LEAVE];
+ if (el->el_chared.c_resizefun)
+ (*el->el_chared.c_resizefun)(el, el->el_chared.c_resizearg);
+ return 1;
+}
+
+/* ch_end():
+ * Free the data structures used by the editor
+ */
+libedit_private void
+ch_end(EditLine *el)
+{
+ el_free(el->el_line.buffer);
+ el->el_line.buffer = NULL;
+ el->el_line.limit = NULL;
+ el_free(el->el_chared.c_undo.buf);
+ el->el_chared.c_undo.buf = NULL;
+ el_free(el->el_chared.c_redo.buf);
+ el->el_chared.c_redo.buf = NULL;
+ el->el_chared.c_redo.pos = NULL;
+ el->el_chared.c_redo.lim = NULL;
+ el->el_chared.c_redo.cmd = ED_UNASSIGNED;
+ el_free(el->el_chared.c_kill.buf);
+ el->el_chared.c_kill.buf = NULL;
+ ch_reset(el);
+}
+
+
+/* el_insertstr():
+ * Insert string at cursorI
+ */
+int
+el_winsertstr(EditLine *el, const wchar_t *s)
+{
+ size_t len;
+
+ if (s == NULL || (len = wcslen(s)) == 0)
+ return -1;
+ if (el->el_line.lastchar + len >= el->el_line.limit) {
+ if (!ch_enlargebufs(el, len))
+ return -1;
+ }
+
+ c_insert(el, (int)len);
+ while (*s)
+ *el->el_line.cursor++ = *s++;
+ return 0;
+}
+
+
+/* el_deletestr():
+ * Delete num characters before the cursor
+ */
+void
+el_deletestr(EditLine *el, int n)
+{
+ if (n <= 0)
+ return;
+
+ if (el->el_line.cursor < &el->el_line.buffer[n])
+ return;
+
+ c_delbefore(el, n); /* delete before dot */
+ el->el_line.cursor -= n;
+ if (el->el_line.cursor < el->el_line.buffer)
+ el->el_line.cursor = el->el_line.buffer;
+}
+
+/* el_cursor():
+ * Move the cursor to the left or the right of the current position
+ */
+int
+el_cursor(EditLine *el, int n)
+{
+ if (n == 0)
+ goto out;
+
+ el->el_line.cursor += n;
+
+ if (el->el_line.cursor < el->el_line.buffer)
+ el->el_line.cursor = el->el_line.buffer;
+ if (el->el_line.cursor > el->el_line.lastchar)
+ el->el_line.cursor = el->el_line.lastchar;
+out:
+ return (int)(el->el_line.cursor - el->el_line.buffer);
+}
+
+/* c_gets():
+ * Get a string
+ */
+libedit_private int
+c_gets(EditLine *el, wchar_t *buf, const wchar_t *prompt)
+{
+ ssize_t len;
+ wchar_t *cp = el->el_line.buffer, ch;
+
+ if (prompt) {
+ len = (ssize_t)wcslen(prompt);
+ (void)memcpy(cp, prompt, (size_t)len * sizeof(*cp));
+ cp += len;
+ }
+ len = 0;
+
+ for (;;) {
+ el->el_line.cursor = cp;
+ *cp = ' ';
+ el->el_line.lastchar = cp + 1;
+ re_refresh(el);
+
+ if (el_wgetc(el, &ch) != 1) {
+ ed_end_of_file(el, 0);
+ len = -1;
+ break;
+ }
+
+ switch (ch) {
+
+ case L'\b': /* Delete and backspace */
+ case 0177:
+ if (len == 0) {
+ len = -1;
+ break;
+ }
+ len--;
+ cp--;
+ continue;
+
+ case 0033: /* ESC */
+ case L'\r': /* Newline */
+ case L'\n':
+ buf[len] = ch;
+ break;
+
+ default:
+ if (len >= (ssize_t)(EL_BUFSIZ - 16))
+ terminal_beep(el);
+ else {
+ buf[len++] = ch;
+ *cp++ = ch;
+ }
+ continue;
+ }
+ break;
+ }
+
+ el->el_line.buffer[0] = '\0';
+ el->el_line.lastchar = el->el_line.buffer;
+ el->el_line.cursor = el->el_line.buffer;
+ return (int)len;
+}
+
+
+/* c_hpos():
+ * Return the current horizontal position of the cursor
+ */
+libedit_private int
+c_hpos(EditLine *el)
+{
+ wchar_t *ptr;
+
+ /*
+ * Find how many characters till the beginning of this line.
+ */
+ if (el->el_line.cursor == el->el_line.buffer)
+ return 0;
+ else {
+ for (ptr = el->el_line.cursor - 1;
+ ptr >= el->el_line.buffer && *ptr != '\n';
+ ptr--)
+ continue;
+ return (int)(el->el_line.cursor - ptr - 1);
+ }
+}
+
+libedit_private int
+ch_resizefun(EditLine *el, el_zfunc_t f, void *a)
+{
+ el->el_chared.c_resizefun = f;
+ el->el_chared.c_resizearg = a;
+ return 0;
+}
+
+libedit_private int
+ch_aliasfun(EditLine *el, el_afunc_t f, void *a)
+{
+ el->el_chared.c_aliasfun = f;
+ el->el_chared.c_aliasarg = a;
+ return 0;
+}