strcpy (s, s + len - 1);
memmove (s, s + len - 1, mutt_strlen (s + len - 1) + 1);
void mutt_pretty_mailbox (char *s){  char *p = s, *q = s;  size_t len;  /* first attempt to collapse the pathname */  while (*p)  {    if (*p == '/' && p[1] == '/')    {      *q++ = '/';      p += 2;    }    else if (p[0] == '/' && p[1] == '.' && p[2] == '/')    {      *q++ = '/';      p += 3;    }    else      *q++ = *p++;  }  *q = 0;  if (mutt_strncmp (s, Maildir, (len = mutt_strlen (Maildir))) == 0 && s[len] == '/')  {    *s++ = '=';    strcpy (s, s + len);  }  else if (mutt_strncmp (s, Homedir, (len = mutt_strlen (Homedir))) == 0 &&	   s[len] == '/')  {    *s++ = '~';    strcpy (s, s + len - 1);  }}