Fix off-by-one misbehavior of Ctrl-Left and Alt-Backspace.

diff -Naurdp mc-4.6.1.orig/src/widget.c mc-4.6.1/src/widget.c

--- mc-4.6.1.orig/src/widget.c	2005-09-06 16:00:00.000000000 +0200

+++ mc-4.6.1/src/widget.c	2005-09-06 17:00:00.000000000 +0200

@@ -1385,7 +1385,7 @@ backward_word (WInput *in)

     memset (&mbs, 0, sizeof (mbs));

     while (in->point > 0) {

       wchar_t c;

-      char *p = in->buffer + charpos(in,in->point);

+      char *p = in->buffer + charpos(in,in->point-1);

       size_t res = mbrtowc(&c, p, strlen(p), &mbs);

       if (*p && (res <= 0 || !(iswspace (c) || iswpunct (c))))

           break;

@@ -1396,7 +1396,7 @@ backward_word (WInput *in)

     while (in->point > 0) {

       wchar_t c;

-      char *p = in->buffer + charpos(in,in->point);

+      char *p = in->buffer + charpos(in,in->point-1);

       size_t res = mbrtowc(&c, p, strlen(p), &mbs);

       if (*p && (res <= 0 || !iswalnum (c)))

           break;