NOISSUE change uvim folder name to mnv

Signed-off-by: Mehmet Samet Duman <yongdohyun@projecttick.org>

1 files changed, 0 insertions, 2670 deletions

diff --git a/uvim/src/bufwrite.c b/uvim/src/bufwrite.c
deleted file mode 100644
index 3c3d0bc28d..0000000000
--- a/uvim/src/bufwrite.c
+++ /dev/null
@@ -1,2670 +0,0 @@
-/* vi:set ts=8 sts=4 sw=4 noet:
- *
- * MNV - MNV is not Vim	by Bram Moolenaar
- *
- * Do ":help uganda"  in MNV to read copying and usage conditions.
- * Do ":help credits" in MNV to see a list of people who contributed.
- * See README.txt for an overview of the MNV source code.
- */
-
-/*
- * bufwrite.c: functions for writing a buffer
- */
-
-#include "mnv.h"
-
-#if defined(HAVE_UTIME) && defined(HAVE_UTIME_H)
-# include <utime.h>		// for struct utimbuf
-#endif
-
-#define SMALLBUFSIZE	256	// size of emergency write buffer
-
-/*
- * Structure to pass arguments from buf_write() to buf_write_bytes().
- */
-struct bw_info
-{
-    int		bw_fd;		// file descriptor
-    char_u	*bw_buf;	// buffer with data to be written
-    int		bw_len;		// length of data
-    int		bw_flags;	// FIO_ flags
-#ifdef FEAT_CRYPT
-    buf_T	*bw_buffer;	// buffer being written
-    int		bw_finish;	// finish encrypting
-#endif
-    char_u	bw_rest[CONV_RESTLEN]; // not converted bytes
-    int		bw_restlen;	// nr of bytes in bw_rest[]
-    int		bw_first;	// first write call
-    char_u	*bw_conv_buf;	// buffer for writing converted chars
-    size_t	bw_conv_buflen; // size of bw_conv_buf
-    int		bw_conv_error;	// set for conversion error
-    linenr_T	bw_conv_error_lnum;  // first line with error or zero
-    linenr_T	bw_start_lnum;	// line number at start of buffer
-#ifdef USE_ICONV
-    iconv_t	bw_iconv_fd;	// descriptor for iconv() or -1
-#endif
-};
-
-/*
- * Convert a Unicode character to bytes.
- * Return TRUE for an error, FALSE when it's OK.
- */
-    static int
-ucs2bytes(
-    unsigned	c,		// in: character
-    char_u	**pp,		// in/out: pointer to result
-    int		flags)		// FIO_ flags
-{
-    char_u	*p = *pp;
-    int		error = FALSE;
-    int		cc;
-
-
-    if (flags & FIO_UCS4)
-    {
-	if (flags & FIO_ENDIAN_L)
-	{
-	    *p++ = c;
-	    *p++ = (c >> 8);
-	    *p++ = (c >> 16);
-	    *p++ = (c >> 24);
-	}
-	else
-	{
-	    *p++ = (c >> 24);
-	    *p++ = (c >> 16);
-	    *p++ = (c >> 8);
-	    *p++ = c;
-	}
-    }
-    else if (flags & (FIO_UCS2 | FIO_UTF16))
-    {
-	if (c >= 0x10000)
-	{
-	    if (flags & FIO_UTF16)
-	    {
-		// Make two words, ten bits of the character in each.  First
-		// word is 0xd800 - 0xdbff, second one 0xdc00 - 0xdfff
-		c -= 0x10000;
-		if (c >= 0x100000)
-		    error = TRUE;
-		cc = ((c >> 10) & 0x3ff) + 0xd800;
-		if (flags & FIO_ENDIAN_L)
-		{
-		    *p++ = cc;
-		    *p++ = ((unsigned)cc >> 8);
-		}
-		else
-		{
-		    *p++ = ((unsigned)cc >> 8);
-		    *p++ = cc;
-		}
-		c = (c & 0x3ff) + 0xdc00;
-	    }
-	    else
-		error = TRUE;
-	}
-	if (flags & FIO_ENDIAN_L)
-	{
-	    *p++ = c;
-	    *p++ = (c >> 8);
-	}
-	else
-	{
-	    *p++ = (c >> 8);
-	    *p++ = c;
-	}
-    }
-    else    // Latin1
-    {
-	if (c >= 0x100)
-	{
-	    error = TRUE;
-	    *p++ = 0xBF;
-	}
-	else
-	    *p++ = c;
-    }
-
-    *pp = p;
-    return error;
-}
-
-/*
- * Call write() to write a number of bytes to the file.
- * Handles encryption and 'encoding' conversion.
- *
- * Return FAIL for failure, OK otherwise.
- */
-    static int
-buf_write_bytes(struct bw_info *ip)
-{
-    int		wlen;
-    char_u	*buf = ip->bw_buf;	// data to write
-    int		len = ip->bw_len;	// length of data
-    int		flags = ip->bw_flags;	// extra flags
-
-    // Skip conversion when writing the crypt magic number or the BOM.
-    if (!(flags & FIO_NOCONVERT))
-    {
-	char_u		*p;
-	unsigned	c;
-	int		n;
-
-	if (flags & FIO_UTF8)
-	{
-	    // Convert latin1 in the buffer to UTF-8 in the file.
-	    p = ip->bw_conv_buf;	// translate to buffer
-	    for (wlen = 0; wlen < len; ++wlen)
-		p += utf_char2bytes(buf[wlen], p);
-	    buf = ip->bw_conv_buf;
-	    len = (int)(p - ip->bw_conv_buf);
-	}
-	else if (flags & (FIO_UCS4 | FIO_UTF16 | FIO_UCS2 | FIO_LATIN1))
-	{
-	    // Convert UTF-8 bytes in the buffer to UCS-2, UCS-4, UTF-16 or
-	    // Latin1 chars in the file.
-	    if (flags & FIO_LATIN1)
-		p = buf;	// translate in-place (can only get shorter)
-	    else
-		p = ip->bw_conv_buf;	// translate to buffer
-	    for (wlen = 0; wlen < len; wlen += n)
-	    {
-		if (wlen == 0 && ip->bw_restlen != 0)
-		{
-		    int		l;
-
-		    // Use remainder of previous call.  Append the start of
-		    // buf[] to get a full sequence.  Might still be too
-		    // short!
-		    l = CONV_RESTLEN - ip->bw_restlen;
-		    if (l > len)
-			l = len;
-		    mch_memmove(ip->bw_rest + ip->bw_restlen, buf, (size_t)l);
-		    n = utf_ptr2len_len(ip->bw_rest, ip->bw_restlen + l);
-		    if (n > ip->bw_restlen + len)
-		    {
-			// We have an incomplete byte sequence at the end to
-			// be written.  We can't convert it without the
-			// remaining bytes.  Keep them for the next call.
-			if (ip->bw_restlen + len > CONV_RESTLEN)
-			    return FAIL;
-			ip->bw_restlen += len;
-			break;
-		    }
-		    if (n > 1)
-			c = utf_ptr2char(ip->bw_rest);
-		    else
-			c = ip->bw_rest[0];
-		    if (n >= ip->bw_restlen)
-		    {
-			n -= ip->bw_restlen;
-			ip->bw_restlen = 0;
-		    }
-		    else
-		    {
-			ip->bw_restlen -= n;
-			mch_memmove(ip->bw_rest, ip->bw_rest + n,
-						      (size_t)ip->bw_restlen);
-			n = 0;
-		    }
-		}
-		else
-		{
-		    n = utf_ptr2len_len(buf + wlen, len - wlen);
-		    if (n > len - wlen)
-		    {
-			// We have an incomplete byte sequence at the end to
-			// be written.  We can't convert it without the
-			// remaining bytes.  Keep them for the next call.
-			if (len - wlen > CONV_RESTLEN)
-			    return FAIL;
-			ip->bw_restlen = len - wlen;
-			mch_memmove(ip->bw_rest, buf + wlen,
-						      (size_t)ip->bw_restlen);
-			break;
-		    }
-		    if (n > 1)
-			c = utf_ptr2char(buf + wlen);
-		    else
-			c = buf[wlen];
-		}
-		// Check that there is enough space
-		if (!(flags & FIO_LATIN1))
-		{
-		    size_t need = (flags & FIO_UCS4) ? 4 : 2;
-		    if ((flags & FIO_UTF16) && c >= 0x10000)
-			need = 4;
-
-		    if ((size_t)(p - ip->bw_conv_buf) + need > ip->bw_conv_buflen)
-			return FAIL;
-		}
-
-		if (ucs2bytes(c, &p, flags) && !ip->bw_conv_error)
-		{
-		    ip->bw_conv_error = TRUE;
-		    ip->bw_conv_error_lnum = ip->bw_start_lnum;
-		}
-		if (c == NL)
-		    ++ip->bw_start_lnum;
-	    }
-	    if (flags & FIO_LATIN1)
-		len = (int)(p - buf);
-	    else
-	    {
-		buf = ip->bw_conv_buf;
-		len = (int)(p - ip->bw_conv_buf);
-	    }
-	}
-
-#ifdef MSWIN
-	else if (flags & FIO_CODEPAGE)
-	{
-	    // Convert UTF-8 or codepage to UCS-2 and then to MS-Windows
-	    // codepage.
-	    char_u	*from;
-	    size_t	fromlen;
-	    char_u	*to;
-	    int		u8c;
-	    BOOL	bad = FALSE;
-	    int		needed;
-
-	    if (ip->bw_restlen > 0)
-	    {
-		// Need to concatenate the remainder of the previous call and
-		// the bytes of the current call.  Use the end of the
-		// conversion buffer for this.
-		fromlen = len + ip->bw_restlen;
-		from = ip->bw_conv_buf + ip->bw_conv_buflen - fromlen;
-		mch_memmove(from, ip->bw_rest, (size_t)ip->bw_restlen);
-		mch_memmove(from + ip->bw_restlen, buf, (size_t)len);
-	    }
-	    else
-	    {
-		from = buf;
-		fromlen = len;
-	    }
-
-	    to = ip->bw_conv_buf;
-	    if (enc_utf8)
-	    {
-		// Convert from UTF-8 to UCS-2, to the start of the buffer.
-		// The buffer has been allocated to be big enough.
-		while (fromlen > 0)
-		{
-		    n = (int)utf_ptr2len_len(from, (int)fromlen);
-		    if (n > (int)fromlen)	// incomplete byte sequence
-			break;
-		    u8c = utf_ptr2char(from);
-		    *to++ = (u8c & 0xff);
-		    *to++ = (u8c >> 8);
-		    fromlen -= n;
-		    from += n;
-		}
-
-		// Copy remainder to ip->bw_rest[] to be used for the next
-		// call.
-		if (fromlen > CONV_RESTLEN)
-		{
-		    // weird overlong sequence
-		    ip->bw_conv_error = TRUE;
-		    return FAIL;
-		}
-		mch_memmove(ip->bw_rest, from, fromlen);
-		ip->bw_restlen = (int)fromlen;
-	    }
-	    else
-	    {
-		// Convert from enc_codepage to UCS-2, to the start of the
-		// buffer.  The buffer has been allocated to be big enough.
-		ip->bw_restlen = 0;
-		needed = MultiByteToWideChar(enc_codepage,
-			     MB_ERR_INVALID_CHARS, (LPCSTR)from, (int)fromlen,
-								     NULL, 0);
-		if (needed == 0)
-		{
-		    // When conversion fails there may be a trailing byte.
-		    needed = MultiByteToWideChar(enc_codepage,
-			 MB_ERR_INVALID_CHARS, (LPCSTR)from, (int)fromlen - 1,
-								     NULL, 0);
-		    if (needed == 0)
-		    {
-			// Conversion doesn't work.
-			ip->bw_conv_error = TRUE;
-			return FAIL;
-		    }
-		    // Save the trailing byte for the next call.
-		    ip->bw_rest[0] = from[fromlen - 1];
-		    ip->bw_restlen = 1;
-		}
-		needed = MultiByteToWideChar(enc_codepage, MB_ERR_INVALID_CHARS,
-				(LPCSTR)from, (int)(fromlen - ip->bw_restlen),
-							  (LPWSTR)to, needed);
-		if (needed == 0)
-		{
-		    // Safety check: Conversion doesn't work.
-		    ip->bw_conv_error = TRUE;
-		    return FAIL;
-		}
-		to += needed * 2;
-	    }
-
-	    fromlen = to - ip->bw_conv_buf;
-	    buf = to;
-# ifdef CP_UTF8	// VC 4.1 doesn't define CP_UTF8
-	    if (FIO_GET_CP(flags) == CP_UTF8)
-	    {
-		// Convert from UCS-2 to UTF-8, using the remainder of the
-		// conversion buffer.  Fails when out of space.
-		for (from = ip->bw_conv_buf; fromlen > 1; fromlen -= 2)
-		{
-		    u8c = *from++;
-		    u8c += (*from++ << 8);
-		    to += utf_char2bytes(u8c, to);
-		    if (to + 6 >= ip->bw_conv_buf + ip->bw_conv_buflen)
-		    {
-			ip->bw_conv_error = TRUE;
-			return FAIL;
-		    }
-		}
-		len = (int)(to - buf);
-	    }
-	    else
-# endif
-	    {
-		// Convert from UCS-2 to the codepage, using the remainder of
-		// the conversion buffer.  If the conversion uses the default
-		// character "0", the data doesn't fit in this encoding, so
-		// fail.
-		len = WideCharToMultiByte(FIO_GET_CP(flags), 0,
-			(LPCWSTR)ip->bw_conv_buf, (int)fromlen / sizeof(WCHAR),
-			(LPSTR)to, (int)(ip->bw_conv_buflen - fromlen), 0,
-									&bad);
-		if (bad)
-		{
-		    ip->bw_conv_error = TRUE;
-		    return FAIL;
-		}
-	    }
-	}
-#endif
-
-#ifdef MACOS_CONVERT
-	else if (flags & FIO_MACROMAN)
-	{
-	    // Convert UTF-8 or latin1 to Apple MacRoman.
-	    char_u	*from;
-	    size_t	fromlen;
-
-	    if (ip->bw_restlen > 0)
-	    {
-		// Need to concatenate the remainder of the previous call and
-		// the bytes of the current call.  Use the end of the
-		// conversion buffer for this.
-		fromlen = len + ip->bw_restlen;
-		from = ip->bw_conv_buf + ip->bw_conv_buflen - fromlen;
-		mch_memmove(from, ip->bw_rest, (size_t)ip->bw_restlen);
-		mch_memmove(from + ip->bw_restlen, buf, (size_t)len);
-	    }
-	    else
-	    {
-		from = buf;
-		fromlen = len;
-	    }
-
-	    if (enc2macroman(from, fromlen,
-			ip->bw_conv_buf, &len, ip->bw_conv_buflen,
-			ip->bw_rest, &ip->bw_restlen) == FAIL)
-	    {
-		ip->bw_conv_error = TRUE;
-		return FAIL;
-	    }
-	    buf = ip->bw_conv_buf;
-	}
-#endif
-
-#ifdef USE_ICONV
-	if (ip->bw_iconv_fd != (iconv_t)-1)
-	{
-	    const char	*from;
-	    size_t	fromlen;
-	    char	*to;
-	    size_t	tolen;
-
-	    // Convert with iconv().
-	    if (ip->bw_restlen > 0)
-	    {
-		char *fp;
-
-		// Need to concatenate the remainder of the previous call and
-		// the bytes of the current call.  Use the end of the
-		// conversion buffer for this.
-		fromlen = len + ip->bw_restlen;
-		fp = (char *)ip->bw_conv_buf + ip->bw_conv_buflen - fromlen;
-		mch_memmove(fp, ip->bw_rest, (size_t)ip->bw_restlen);
-		mch_memmove(fp + ip->bw_restlen, buf, (size_t)len);
-		from = fp;
-		tolen = ip->bw_conv_buflen - fromlen;
-	    }
-	    else
-	    {
-		from = (const char *)buf;
-		fromlen = len;
-		tolen = ip->bw_conv_buflen;
-	    }
-	    to = (char *)ip->bw_conv_buf;
-
-	    if (ip->bw_first)
-	    {
-		size_t	save_len = tolen;
-
-		// output the initial shift state sequence
-		(void)iconv(ip->bw_iconv_fd, NULL, NULL, &to, &tolen);
-
-		// There is a bug in iconv() on Linux (which appears to be
-		// wide-spread) which sets "to" to NULL and messes up "tolen".
-		if (to == NULL)
-		{
-		    to = (char *)ip->bw_conv_buf;
-		    tolen = save_len;
-		}
-		ip->bw_first = FALSE;
-	    }
-
-	    // If iconv() has an error or there is not enough room, fail.
-	    if ((iconv(ip->bw_iconv_fd, (void *)&from, &fromlen, &to, &tolen)
-			== (size_t)-1 && ICONV_ERRNO != ICONV_EINVAL)
-						    || fromlen > CONV_RESTLEN)
-	    {
-		ip->bw_conv_error = TRUE;
-		return FAIL;
-	    }
-
-	    // copy remainder to ip->bw_rest[] to be used for the next call.
-	    if (fromlen > 0)
-		mch_memmove(ip->bw_rest, (void *)from, fromlen);
-	    ip->bw_restlen = (int)fromlen;
-
-	    buf = ip->bw_conv_buf;
-	    len = (int)((char_u *)to - ip->bw_conv_buf);
-	}
-#endif
-    }
-
-    if (ip->bw_fd < 0)
-	// Only checking conversion, which is OK if we get here.
-	return OK;
-
-#ifdef FEAT_CRYPT
-    if (flags & FIO_ENCRYPTED)
-    {
-	// Encrypt the data. Do it in-place if possible, otherwise use an
-	// allocated buffer.
-# ifdef CRYPT_NOT_INPLACE
-	if (crypt_works_inplace(ip->bw_buffer->b_cryptstate))
-	{
-# endif
-	    crypt_encode_inplace(ip->bw_buffer->b_cryptstate, buf, len,
-								ip->bw_finish);
-# ifdef CRYPT_NOT_INPLACE
-	}
-	else
-	{
-	    char_u *outbuf;
-
-	    len = crypt_encode_alloc(curbuf->b_cryptstate, buf, len, &outbuf,
-								ip->bw_finish);
-	    if (len == 0)
-		return OK;  // Crypt layer is buffering, will flush later.
-	    wlen = write_eintr(ip->bw_fd, outbuf, len);
-	    mnv_free(outbuf);
-	    return (wlen < len) ? FAIL : OK;
-	}
-# endif
-    }
-#endif
-
-    wlen = write_eintr(ip->bw_fd, buf, len);
-    return (wlen < len) ? FAIL : OK;
-}
-
-/*
- * Check modification time of file, before writing to it.
- * The size isn't checked, because using a tool like "gzip" takes care of
- * using the same timestamp but can't set the size.
- */
-    static int
-check_mtime(buf_T *buf, stat_T *st)
-{
-    if (buf->b_mtime_read != 0
-		  && time_differs(st, buf->b_mtime_read, buf->b_mtime_read_ns))
-    {
-	msg_scroll = TRUE;	    // don't overwrite messages here
-	msg_silent = 0;		    // must give this prompt
-	// don't use emsg() here, don't want to flush the buffers
-	msg_attr(_("WARNING: The file has been changed since reading it!!!"),
-						       HL_ATTR(HLF_E));
-	if (ask_yesno((char_u *)_("Do you really want to write to it"),
-								 TRUE) == 'n')
-	    return FAIL;
-	msg_scroll = FALSE;	    // always overwrite the file message now
-    }
-    return OK;
-}
-
-/*
- * Generate a BOM in "buf[4]" for encoding "name".
- * Return the length of the BOM (zero when no BOM).
- */
-    static int
-make_bom(char_u *buf, char_u *name)
-{
-    int		flags;
-    char_u	*p;
-
-    flags = get_fio_flags(name);
-
-    // Can't put a BOM in a non-Unicode file.
-    if (flags == FIO_LATIN1 || flags == 0)
-	return 0;
-
-    if (flags == FIO_UTF8)	// UTF-8
-    {
-	buf[0] = 0xef;
-	buf[1] = 0xbb;
-	buf[2] = 0xbf;
-	return 3;
-    }
-    p = buf;
-    (void)ucs2bytes(0xfeff, &p, flags);
-    return (int)(p - buf);
-}
-
-#ifdef UNIX
-    static void
-set_file_time(
-    char_u  *fname,
-    time_t  atime,	    // access time
-    time_t  mtime)	    // modification time
-{
-# if defined(HAVE_UTIME) && defined(HAVE_UTIME_H)
-    struct utimbuf  buf;
-
-    buf.actime	= atime;
-    buf.modtime	= mtime;
-    (void)utime((char *)fname, &buf);
-# else
-#  if defined(HAVE_UTIMES)
-    struct timeval  tvp[2];
-
-    tvp[0].tv_sec   = atime;
-    tvp[0].tv_usec  = 0;
-    tvp[1].tv_sec   = mtime;
-    tvp[1].tv_usec  = 0;
-    (void)utimes((char *)fname, (const struct timeval *)&tvp);
-#  endif
-# endif
-}
-#endif // UNIX
-
-    char *
-new_file_message(void)
-{
-    return shortmess(SHM_NEW) ? _("[New]") : _("[New File]");
-}
-
-/*
- * buf_write() - write to file "fname" lines "start" through "end"
- *
- * We do our own buffering here because fwrite() is so slow.
- *
- * If "forceit" is true, we don't care for errors when attempting backups.
- * In case of an error everything possible is done to restore the original
- * file.  But when "forceit" is TRUE, we risk losing it.
- *
- * When "reset_changed" is TRUE and "append" == FALSE and "start" == 1 and
- * "end" == curbuf->b_ml.ml_line_count, reset curbuf->b_changed.
- *
- * This function must NOT use NameBuff (because it's called by autowrite()).
- *
- * return FAIL for failure, OK otherwise
- */
-    int
-buf_write(
-    buf_T	    *buf,
-    char_u	    *fname,
-    char_u	    *sfname,
-    linenr_T	    start,
-    linenr_T	    end,
-    exarg_T	    *eap,		// for forced 'ff' and 'fenc', can be
-					// NULL!
-    int		    append,		// append to the file
-    int		    forceit,
-    int		    reset_changed,
-    int		    filtering)
-{
-    int		    fd;
-    char_u	    *backup = NULL;
-    int		    backup_copy = FALSE; // copy the original file?
-    int		    dobackup;
-    char_u	    *ffname;
-    char_u	    *wfname = NULL;	// name of file to write to
-    char_u	    *s;
-    char_u	    *ptr;
-    char_u	    c;
-    int		    len;
-    linenr_T	    lnum;
-    long	    nchars;
-    char_u	    *errmsg = NULL;
-    int		    errmsg_allocated = FALSE;
-    char_u	    *errnum = NULL;
-    char_u	    *buffer;
-    char_u	    smallbuf[SMALLBUFSIZE];
-    char_u	    *backup_ext;
-    int		    bufsize;
-    long	    perm;		    // file permissions
-    int		    retval = OK;
-    int		    newfile = FALSE;	    // TRUE if file doesn't exist yet
-    int		    msg_save = msg_scroll;
-    int		    overwriting;	    // TRUE if writing over original
-    int		    no_eol = FALSE;	    // no end-of-line written
-    int		    device = FALSE;	    // writing to a device
-    stat_T	    st_old;
-    int		    prev_got_int = got_int;
-    int		    checking_conversion;
-    int		    file_readonly = FALSE;  // overwritten file is read-only
-#if defined(UNIX)			    // XXX fix me sometime?
-    int		    made_writable = FALSE;  // 'w' bit has been set
-#endif
-					// writing everything
-    int		    whole = (start == 1 && end == buf->b_ml.ml_line_count);
-    linenr_T	    old_line_count = buf->b_ml.ml_line_count;
-    int		    attr;
-    int		    fileformat;
-    int		    write_bin;
-    struct bw_info  write_info;		// info for buf_write_bytes()
-    int		    converted = FALSE;
-    int		    notconverted = FALSE;
-    char_u	    *fenc;		// effective 'fileencoding'
-    char_u	    *fenc_tofree = NULL; // allocated "fenc"
-    int		    wb_flags = 0;
-#ifdef HAVE_ACL
-    mnv_acl_T	    acl = NULL;		// ACL copied from original file to
-					// backup or new file
-#endif
-#ifdef FEAT_PERSISTENT_UNDO
-    int		    write_undo_file = FALSE;
-    context_sha256_T sha_ctx;
-#endif
-    unsigned int    bkc = get_bkc_flags(buf);
-    pos_T	    orig_start = buf->b_op_start;
-    pos_T	    orig_end = buf->b_op_end;
-
-    if (fname == NULL || *fname == NUL)	// safety check
-	return FAIL;
-    if (buf->b_ml.ml_mfp == NULL)
-    {
-	// This can happen during startup when there is a stray "w" in the
-	// mnvrc file.
-	emsg(_(e_empty_buffer));
-	return FAIL;
-    }
-
-    // Disallow writing from .exrc and .mnvrc in current directory for
-    // security reasons.
-    if (check_secure())
-	return FAIL;
-
-    // Avoid a crash for a long name.
-    if (STRLEN(fname) >= MAXPATHL)
-    {
-	emsg(_(e_name_too_long));
-	return FAIL;
-    }
-
-    // must init bw_conv_buf and bw_iconv_fd before jumping to "fail"
-    write_info.bw_conv_buf = NULL;
-    write_info.bw_conv_error = FALSE;
-    write_info.bw_conv_error_lnum = 0;
-    write_info.bw_restlen = 0;
-#ifdef USE_ICONV
-    write_info.bw_iconv_fd = (iconv_t)-1;
-#endif
-#ifdef FEAT_CRYPT
-    write_info.bw_buffer = buf;
-    write_info.bw_finish = FALSE;
-#endif
-
-    // After writing a file changedtick changes but we don't want to display
-    // the line.
-    ex_no_reprint = TRUE;
-
-    // If there is no file name yet, use the one for the written file.
-    // BF_NOTEDITED is set to reflect this (in case the write fails).
-    // Don't do this when the write is for a filter command.
-    // Don't do this when appending.
-    // Only do this when 'cpoptions' contains the 'F' flag.
-    if (buf->b_ffname == NULL
-	    && reset_changed
-	    && whole
-	    && buf == curbuf
-	    && !bt_nofilename(buf)
-	    && !filtering
-	    && (!append || mnv_strchr(p_cpo, CPO_FNAMEAPP) != NULL)
-	    && mnv_strchr(p_cpo, CPO_FNAMEW) != NULL)
-    {
-	if (set_rw_fname(fname, sfname) == FAIL)
-	    return FAIL;
-	buf = curbuf;	    // just in case autocmds made "buf" invalid
-    }
-
-    if (sfname == NULL)
-	sfname = fname;
-    // For Unix: Use the short file name whenever possible.
-    // Avoids problems with networks and when directory names are changed.
-    // Don't do this for MS-DOS, a "cd" in a sub-shell may have moved us to
-    // another directory, which we don't detect
-    ffname = fname;			    // remember full fname
-#ifdef UNIX
-    fname = sfname;
-#endif
-
-    if (buf->b_ffname != NULL && fnamecmp(ffname, buf->b_ffname) == 0)
-	overwriting = TRUE;
-    else
-	overwriting = FALSE;
-
-    if (exiting)
-	settmode(TMODE_COOK);	    // when exiting allow typeahead now
-
-    ++no_wait_return;		    // don't wait for return yet
-
-    // Set '[ and '] marks to the lines to be written.
-    buf->b_op_start.lnum = start;
-    buf->b_op_start.col = 0;
-    buf->b_op_end.lnum = end;
-    buf->b_op_end.col = 0;
-
-    {
-	aco_save_T	aco;
-	int		buf_ffname = FALSE;
-	int		buf_sfname = FALSE;
-	int		buf_fname_f = FALSE;
-	int		buf_fname_s = FALSE;
-	int		did_cmd = FALSE;
-	int		nofile_err = FALSE;
-	int		empty_memline = (buf->b_ml.ml_mfp == NULL);
-	bufref_T	bufref;
-
-	// Apply PRE autocommands.
-	// Set curbuf to the buffer to be written.
-	// Careful: The autocommands may call buf_write() recursively!
-	if (ffname == buf->b_ffname)
-	    buf_ffname = TRUE;
-	if (sfname == buf->b_sfname)
-	    buf_sfname = TRUE;
-	if (fname == buf->b_ffname)
-	    buf_fname_f = TRUE;
-	if (fname == buf->b_sfname)
-	    buf_fname_s = TRUE;
-
-	// Set curwin/curbuf to buf and save a few things.
-	aucmd_prepbuf(&aco, buf);
-	if (curbuf != buf)
-	{
-	    // Could not find a window for "buf".  Doing more might cause
-	    // problems, better bail out.
-	    return FAIL;
-	}
-
-	set_bufref(&bufref, buf);
-
-	if (append)
-	{
-	    if (!(did_cmd = apply_autocmds_exarg(EVENT_FILEAPPENDCMD,
-					 sfname, sfname, FALSE, curbuf, eap)))
-	    {
-		if (overwriting && bt_nofilename(curbuf))
-		    nofile_err = TRUE;
-		else
-		    apply_autocmds_exarg(EVENT_FILEAPPENDPRE,
-					  sfname, sfname, FALSE, curbuf, eap);
-	    }
-	}
-	else if (filtering)
-	{
-	    apply_autocmds_exarg(EVENT_FILTERWRITEPRE,
-					    NULL, sfname, FALSE, curbuf, eap);
-	}
-	else if (reset_changed && whole)
-	{
-	    int was_changed = curbufIsChanged();
-
-	    did_cmd = apply_autocmds_exarg(EVENT_BUFWRITECMD,
-					  sfname, sfname, FALSE, curbuf, eap);
-	    if (did_cmd)
-	    {
-		if (was_changed && !curbufIsChanged())
-		{
-		    // Written everything correctly and BufWriteCmd has reset
-		    // 'modified': Correct the undo information so that an
-		    // undo now sets 'modified'.
-		    u_unchanged(curbuf);
-		    u_update_save_nr(curbuf);
-		}
-	    }
-	    else
-	    {
-		if (overwriting && bt_nofilename(curbuf))
-		    nofile_err = TRUE;
-		else
-		    apply_autocmds_exarg(EVENT_BUFWRITEPRE,
-					  sfname, sfname, FALSE, curbuf, eap);
-	    }
-	}
-	else
-	{
-	    if (!(did_cmd = apply_autocmds_exarg(EVENT_FILEWRITECMD,
-					 sfname, sfname, FALSE, curbuf, eap)))
-	    {
-		if (overwriting && bt_nofilename(curbuf))
-		    nofile_err = TRUE;
-		else
-		    apply_autocmds_exarg(EVENT_FILEWRITEPRE,
-					  sfname, sfname, FALSE, curbuf, eap);
-	    }
-	}
-
-	// restore curwin/curbuf and a few other things
-	aucmd_restbuf(&aco);
-
-	// In three situations we return here and don't write the file:
-	// 1. the autocommands deleted or unloaded the buffer.
-	// 2. The autocommands abort script processing.
-	// 3. If one of the "Cmd" autocommands was executed.
-	if (!bufref_valid(&bufref))
-	    buf = NULL;
-	if (buf == NULL || (buf->b_ml.ml_mfp == NULL && !empty_memline)
-				       || did_cmd || nofile_err
-#ifdef FEAT_EVAL
-				       || aborting()
-#endif
-				       )
-	{
-	    if (buf != NULL && (cmdmod.cmod_flags & CMOD_LOCKMARKS))
-	    {
-		// restore the original '[ and '] positions
-		buf->b_op_start = orig_start;
-		buf->b_op_end = orig_end;
-	    }
-
-	    --no_wait_return;
-	    msg_scroll = msg_save;
-	    if (nofile_err)
-		semsg(_(e_no_matching_autocommands_for_buftype_str_buffer),
-							       curbuf->b_p_bt);
-
-	    if (nofile_err
-#ifdef FEAT_EVAL
-		    || aborting()
-#endif
-		    )
-		// An aborting error, interrupt or exception in the
-		// autocommands.
-		return FAIL;
-	    if (did_cmd)
-	    {
-		if (buf == NULL)
-		    // The buffer was deleted.  We assume it was written
-		    // (can't retry anyway).
-		    return OK;
-		if (overwriting)
-		{
-		    // Assume the buffer was written, update the timestamp.
-		    ml_timestamp(buf);
-		    if (append)
-			buf->b_flags &= ~BF_NEW;
-		    else
-			buf->b_flags &= ~BF_WRITE_MASK;
-		}
-		if (reset_changed && buf->b_changed && !append
-			&& (overwriting || mnv_strchr(p_cpo, CPO_PLUS) != NULL))
-		    // Buffer still changed, the autocommands didn't work
-		    // properly.
-		    return FAIL;
-		return OK;
-	    }
-#ifdef FEAT_EVAL
-	    if (!aborting())
-#endif
-		emsg(_(e_autocommands_deleted_or_unloaded_buffer_to_be_written));
-	    return FAIL;
-	}
-
-	// The autocommands may have changed the number of lines in the file.
-	// When writing the whole file, adjust the end.
-	// When writing part of the file, assume that the autocommands only
-	// changed the number of lines that are to be written (tricky!).
-	if (buf->b_ml.ml_line_count != old_line_count)
-	{
-	    if (whole)						// write all
-		end = buf->b_ml.ml_line_count;
-	    else if (buf->b_ml.ml_line_count > old_line_count)	// more lines
-		end += buf->b_ml.ml_line_count - old_line_count;
-	    else						// less lines
-	    {
-		end -= old_line_count - buf->b_ml.ml_line_count;
-		if (end < start)
-		{
-		    --no_wait_return;
-		    msg_scroll = msg_save;
-		    emsg(_(e_autocommands_changed_number_of_lines_in_unexpected_way));
-		    return FAIL;
-		}
-	    }
-	}
-
-	// The autocommands may have changed the name of the buffer, which may
-	// be kept in fname, ffname and sfname.
-	if (buf_ffname)
-	    ffname = buf->b_ffname;
-	if (buf_sfname)
-	    sfname = buf->b_sfname;
-	if (buf_fname_f)
-	    fname = buf->b_ffname;
-	if (buf_fname_s)
-	    fname = buf->b_sfname;
-    }
-
-    if (cmdmod.cmod_flags & CMOD_LOCKMARKS)
-    {
-	// restore the original '[ and '] positions
-	buf->b_op_start = orig_start;
-	buf->b_op_end = orig_end;
-    }
-
-#ifdef FEAT_NETBEANS_INTG
-    if (netbeans_active() && isNetbeansBuffer(buf))
-    {
-	if (whole)
-	{
-	    // b_changed can be 0 after an undo, but we still need to write
-	    // the buffer to NetBeans.
-	    if (buf->b_changed || isNetbeansModified(buf))
-	    {
-		--no_wait_return;		// may wait for return now
-		msg_scroll = msg_save;
-		netbeans_save_buffer(buf);	// no error checking...
-		return retval;
-	    }
-	    else
-	    {
-		errnum = (char_u *)"E656: ";
-		errmsg = (char_u *)_(e_netbeans_disallows_writes_of_unmodified_buffers);
-		buffer = NULL;
-		goto fail;
-	    }
-	}
-	else
-	{
-	    errnum = (char_u *)"E657: ";
-	    errmsg = (char_u *)_(e_partial_writes_disallowed_for_netbeans_buffers);
-	    buffer = NULL;
-	    goto fail;
-	}
-    }
-#endif
-
-    if (shortmess(SHM_OVER) && !exiting)
-	msg_scroll = FALSE;	    // overwrite previous file message
-    else
-	msg_scroll = TRUE;	    // don't overwrite previous file message
-    if (!filtering)
-	filemess(buf,
-#ifndef UNIX
-		sfname,
-#else
-		fname,
-#endif
-		    (char_u *)"", 0);	// show that we are busy
-    msg_scroll = FALSE;		    // always overwrite the file message now
-
-    buffer = alloc(WRITEBUFSIZE);
-    if (buffer == NULL)		    // can't allocate big buffer, use small
-				    // one (to be able to write when out of
-				    // memory)
-    {
-	buffer = smallbuf;
-	bufsize = SMALLBUFSIZE;
-    }
-    else
-	bufsize = WRITEBUFSIZE;
-
-    // Get information about original file (if there is one).
-#if defined(UNIX)
-    st_old.st_dev = 0;
-    st_old.st_ino = 0;
-    perm = -1;
-    if (mch_stat((char *)fname, &st_old) < 0)
-	newfile = TRUE;
-    else
-    {
-	perm = st_old.st_mode;
-	if (!S_ISREG(st_old.st_mode))		// not a file
-	{
-	    if (S_ISDIR(st_old.st_mode))
-	    {
-		errnum = (char_u *)"E502: ";
-		errmsg = (char_u *)_(e_is_a_directory);
-		goto fail;
-	    }
-	    if (mch_nodetype(fname) != NODE_WRITABLE)
-	    {
-		errnum = (char_u *)"E503: ";
-		errmsg = (char_u *)_(e_is_not_file_or_writable_device);
-		goto fail;
-	    }
-	    // It's a device of some kind (or a fifo) which we can write to
-	    // but for which we can't make a backup.
-	    device = TRUE;
-	    newfile = TRUE;
-	    perm = -1;
-	}
-    }
-#else // !UNIX
-    // Check for a writable device name.
-    c = mch_nodetype(fname);
-    if (c == NODE_OTHER)
-    {
-	errnum = (char_u *)"E503: ";
-	errmsg = (char_u *)_(e_is_not_file_or_writable_device);
-	goto fail;
-    }
-    if (c == NODE_WRITABLE)
-    {
-# if defined(MSWIN)
-	// MS-Windows allows opening a device, but we will probably get stuck
-	// trying to write to it.
-	if (!p_odev)
-	{
-	    errnum = (char_u *)"E796: ";
-	    errmsg = (char_u *)_(e_writing_to_device_disabled_with_opendevice_option);
-	    goto fail;
-	}
-# endif
-	device = TRUE;
-	newfile = TRUE;
-	perm = -1;
-    }
-    else
-    {
-	perm = mch_getperm(fname);
-	if (perm < 0)
-	    newfile = TRUE;
-	else if (mch_isdir(fname))
-	{
-	    errnum = (char_u *)"E502: ";
-	    errmsg = (char_u *)_(e_is_a_directory);
-	    goto fail;
-	}
-	if (overwriting)
-	    (void)mch_stat((char *)fname, &st_old);
-    }
-#endif // !UNIX
-
-    if (!device && !newfile)
-    {
-	// Check if the file is really writable (when renaming the file to
-	// make a backup we won't discover it later).
-	file_readonly = check_file_readonly(fname, (int)perm);
-
-	if (!forceit && file_readonly)
-	{
-	    if (mnv_strchr(p_cpo, CPO_FWRITE) != NULL)
-	    {
-		errnum = (char_u *)"E504: ";
-		errmsg = (char_u *)_(e_is_read_only_cannot_override_W_in_cpoptions);
-	    }
-	    else
-	    {
-		errnum = (char_u *)"E505: ";
-		errmsg = (char_u *)_(e_is_read_only_add_bang_to_override);
-	    }
-	    goto fail;
-	}
-
-	// Check if the timestamp hasn't changed since reading the file.
-	if (overwriting)
-	{
-	    retval = check_mtime(buf, &st_old);
-	    if (retval == FAIL)
-		goto fail;
-	}
-    }
-
-#ifdef HAVE_ACL
-    // For systems that support ACL: get the ACL from the original file.
-    if (!newfile)
-	acl = mch_get_acl(fname);
-#endif
-
-    // If 'backupskip' is not empty, don't make a backup for some files.
-    dobackup = (p_wb || p_bk || *p_pm != NUL);
-    if (dobackup && *p_bsk != NUL && match_file_list(p_bsk, sfname, ffname))
-	dobackup = FALSE;
-
-    // Save the value of got_int and reset it.  We don't want a previous
-    // interruption cancel writing, only hitting CTRL-C while writing should
-    // abort it.
-    prev_got_int = got_int;
-    got_int = FALSE;
-
-    // Mark the buffer as 'being saved' to prevent changed buffer warnings
-    buf->b_saving = TRUE;
-
-    // If we are not appending or filtering, the file exists, and the
-    // 'writebackup', 'backup' or 'patchmode' option is set, need a backup.
-    // When 'patchmode' is set also make a backup when appending.
-    //
-    // Do not make any backup, if 'writebackup' and 'backup' are both switched
-    // off.  This helps when editing large files on almost-full disks.
-    if (!(append && *p_pm == NUL) && !filtering && perm >= 0 && dobackup)
-    {
-#if defined(UNIX) || defined(MSWIN)
-	stat_T	    st;
-#endif
-
-	if ((bkc & BKC_YES) || append)	// "yes"
-	    backup_copy = TRUE;
-#if defined(UNIX) || defined(MSWIN)
-	else if ((bkc & BKC_AUTO))	// "auto"
-	{
-# ifdef UNIX
-	    // Don't rename the file when:
-	    // - it's a hard link
-	    // - it's a symbolic link
-	    // - we don't have write permission in the directory
-	    // - we can't set the owner/group of the new file
-	    if (st_old.st_nlink > 1
-		    || mch_lstat((char *)fname, &st) < 0
-		    || st.st_dev != st_old.st_dev
-		    || st.st_ino != st_old.st_ino
-#  ifndef HAVE_FCHOWN
-		    || st.st_uid != st_old.st_uid
-		    || st.st_gid != st_old.st_gid
-#  endif
-		    )
-		backup_copy = TRUE;
-	    else
-# else
-#  ifdef MSWIN
-	    // On NTFS file systems hard links are possible.
-	    if (mch_is_linked(fname))
-		backup_copy = TRUE;
-	    else
-#  endif
-# endif
-	    {
-		size_t	dirlen;
-		char_u	tmp_fname[MAXPATHL];
-		int	i;
-
-		// Check if we can create a file and set the owner/group to
-		// the ones from the original file.
-		// First find a file name that doesn't exist yet (use some
-		// arbitrary numbers).
-		dirlen = (size_t)(gettail(fname) - fname);
-		mnv_strncpy(tmp_fname, fname, dirlen);
-		fd = -1;
-		for (i = 4913; ; i += 123)
-		{
-		    mnv_snprintf((char *)tmp_fname + dirlen,
-			sizeof(tmp_fname) - dirlen, "%d", i);
-		    if (mch_lstat((char *)tmp_fname, &st) < 0)
-		    {
-			fd = mch_open((char *)tmp_fname,
-				    O_CREAT|O_WRONLY|O_EXCL|O_NOFOLLOW, perm);
-			if (fd < 0 && errno == EEXIST)
-			    // If the same file name is created by another
-			    // process between lstat() and open(), find another
-			    // name.
-			    continue;
-			break;
-		    }
-		}
-		if (fd < 0)	// can't write in directory
-		    backup_copy = TRUE;
-		else
-		{
-# ifdef UNIX
-#  ifdef HAVE_FCHOWN
-		    mnv_ignored = fchown(fd, st_old.st_uid, st_old.st_gid);
-#  endif
-		    if (mch_stat((char *)tmp_fname, &st) < 0
-			    || st.st_uid != st_old.st_uid
-			    || st.st_gid != st_old.st_gid
-			    || (long)st.st_mode != perm)
-			backup_copy = TRUE;
-# endif
-		    // Close the file before removing it, on MS-Windows we
-		    // can't delete an open file.
-		    close(fd);
-		    mch_remove(tmp_fname);
-# ifdef MSWIN
-		    // MS-Windows may trigger a virus scanner to open the
-		    // file, we can't delete it then.  Keep trying for half a
-		    // second.
-		    {
-			int try;
-
-			for (try = 0; try < 10; ++try)
-			{
-			    if (mch_lstat((char *)tmp_fname, &st) < 0)
-				break;
-			    ui_delay(50L, TRUE);  // wait 50 msec
-			    mch_remove(tmp_fname);
-			}
-		    }
-# endif
-		}
-	    }
-	}
-
-	// Break symlinks and/or hardlinks if we've been asked to.
-	if ((bkc & BKC_BREAKSYMLINK) || (bkc & BKC_BREAKHARDLINK))
-	{
-# ifdef UNIX
-	    int	lstat_res;
-
-	    lstat_res = mch_lstat((char *)fname, &st);
-
-	    // Symlinks.
-	    if ((bkc & BKC_BREAKSYMLINK)
-		    && lstat_res == 0
-		    && st.st_ino != st_old.st_ino)
-		backup_copy = FALSE;
-
-	    // Hardlinks.
-	    if ((bkc & BKC_BREAKHARDLINK)
-		    && st_old.st_nlink > 1
-		    && (lstat_res != 0 || st.st_ino == st_old.st_ino))
-		backup_copy = FALSE;
-# else
-#  if defined(MSWIN)
-	    // Symlinks.
-	    if ((bkc & BKC_BREAKSYMLINK) && mch_is_symbolic_link(fname))
-		backup_copy = FALSE;
-
-	    // Hardlinks.
-	    if ((bkc & BKC_BREAKHARDLINK) && mch_is_hard_link(fname))
-		backup_copy = FALSE;
-#  endif
-# endif
-	}
-
-#endif
-
-	// make sure we have a valid backup extension to use
-	if (*p_bex == NUL)
-	    backup_ext = (char_u *)".bak";
-	else
-	    backup_ext = p_bex;
-
-	if (backup_copy
-		&& (fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0)) >= 0)
-	{
-	    int		bfd;
-	    char_u	*copybuf;
-	    int		some_error = FALSE;
-	    stat_T	st_new;
-	    char_u	*dirp;
-	    char_u	*rootname;
-#if defined(UNIX)
-	    int		did_set_shortname;
-	    mode_t	umask_save;
-#endif
-
-	    copybuf = alloc(WRITEBUFSIZE + 1);
-	    if (copybuf == NULL)
-	    {
-		some_error = TRUE;	    // out of memory
-		goto nobackup;
-	    }
-
-	    // Try to make the backup in each directory in the 'bdir' option.
-	    //
-	    // Unix semantics has it, that we may have a writable file,
-	    // that cannot be recreated with a simple open(..., O_CREAT, ) e.g:
-	    //  - the directory is not writable,
-	    //  - the file may be a symbolic link,
-	    //  - the file may belong to another user/group, etc.
-	    //
-	    // For these reasons, the existing writable file must be truncated
-	    // and reused. Creation of a backup COPY will be attempted.
-	    dirp = p_bdir;
-	    while (*dirp)
-	    {
-		char_u	*p UNUSED;
-		int	copybuf_len UNUSED;
-
-#ifdef UNIX
-		st_new.st_ino = 0;
-		st_new.st_dev = 0;
-		st_new.st_gid = 0;
-#endif
-
-		// Isolate one directory name, using an entry in 'bdir'.
-		copybuf_len = copy_option_part(&dirp, copybuf, WRITEBUFSIZE, ",");
-
-#if defined(UNIX) || defined(MSWIN)
-		p = copybuf + copybuf_len;
-		if (after_pathsep(copybuf, p) && p[-1] == p[-2])
-		    // Ends with '//', use full path
-		    if ((p = make_percent_swname(copybuf, p, fname)) != NULL)
-		    {
-			backup = modname(p, backup_ext, FALSE);
-			mnv_free(p);
-		    }
-#endif
-		rootname = get_file_in_dir(fname, copybuf);
-		if (rootname == NULL)
-		{
-		    some_error = TRUE;	    // out of memory
-		    goto nobackup;
-		}
-
-#if defined(UNIX)
-		did_set_shortname = FALSE;
-#endif
-
-		// May try twice if 'shortname' not set.
-		for (;;)
-		{
-		    // Make the backup file name.
-		    if (backup == NULL)
-			backup = buf_modname((buf->b_p_sn || buf->b_shortname),
-						 rootname, backup_ext, FALSE);
-		    if (backup == NULL)
-		    {
-			mnv_free(rootname);
-			some_error = TRUE;		// out of memory
-			goto nobackup;
-		    }
-
-		    // Check if backup file already exists.
-		    if (mch_stat((char *)backup, &st_new) >= 0)
-		    {
-#ifdef UNIX
-			// Check if backup file is same as original file.
-			// May happen when modname() gave the same file back.
-			// E.g. silly link, or file name-length reached.
-			// If we don't check here, we either ruin the file
-			// when copying or erase it after writing. jw.
-			if (st_new.st_dev == st_old.st_dev
-					    && st_new.st_ino == st_old.st_ino)
-			{
-			    MNV_CLEAR(backup);	// no backup file to delete
-			    // may try again with 'shortname' set
-			    if (!(buf->b_shortname || buf->b_p_sn))
-			    {
-				buf->b_shortname = TRUE;
-				did_set_shortname = TRUE;
-				continue;
-			    }
-				// setting shortname didn't help
-			    if (did_set_shortname)
-				buf->b_shortname = FALSE;
-			    break;
-			}
-#endif
-
-			// If we are not going to keep the backup file, don't
-			// delete an existing one, try to use another name.
-			// Change one character, just before the extension.
-			if (!p_bk)
-			{
-			    char_u	*wp;
-
-			    wp = backup + STRLEN(backup) - 1
-							 - STRLEN(backup_ext);
-			    if (wp < backup)	// empty file name ???
-				wp = backup;
-			    *wp = 'z';
-			    while (*wp > 'a'
-				    && mch_stat((char *)backup, &st_new) >= 0)
-				--*wp;
-			    // They all exist??? Must be something wrong.
-			    if (*wp == 'a')
-				MNV_CLEAR(backup);
-			}
-		    }
-		    break;
-		}
-		mnv_free(rootname);
-
-		// Try to create the backup file
-		if (backup != NULL)
-		{
-		    // remove old backup, if present
-		    mch_remove(backup);
-		    // Open with O_EXCL to avoid the file being created while
-		    // we were sleeping (symlink hacker attack?). Reset umask
-		    // if possible to avoid mch_setperm() below.
-#ifdef UNIX
-		    umask_save = umask(0);
-#endif
-		    bfd = mch_open((char *)backup,
-				O_WRONLY|O_CREAT|O_EXTRA|O_EXCL|O_NOFOLLOW,
-								 perm & 0777);
-#ifdef UNIX
-		    (void)umask(umask_save);
-#endif
-		    if (bfd < 0)
-			MNV_CLEAR(backup);
-		    else
-		    {
-			// Set file protection same as original file, but
-			// strip s-bit.  Only needed if umask() wasn't used
-			// above.
-#ifndef UNIX
-			(void)mch_setperm(backup, perm & 0777);
-#else
-			// Try to set the group of the backup same as the
-			// original file. If this fails, set the protection
-			// bits for the group same as the protection bits for
-			// others.
-			if (st_new.st_gid != st_old.st_gid
-# ifdef HAVE_FCHOWN  // sequent-ptx lacks fchown()
-				&& fchown(bfd, (uid_t)-1, st_old.st_gid) != 0
-# endif
-						)
-			    mch_setperm(backup,
-					  (perm & 0707) | ((perm & 07) << 3));
-# if defined(HAVE_SELINUX) || defined(HAVE_SMACK)
-			mch_copy_sec(fname, backup);
-# endif
-# ifdef FEAT_XATTR
-			mch_copy_xattr(fname, backup);
-# endif
-#endif
-
-			// copy the file.
-			write_info.bw_fd = bfd;
-			write_info.bw_buf = copybuf;
-			write_info.bw_flags = FIO_NOCONVERT;
-			while ((write_info.bw_len = read_eintr(fd, copybuf,
-							    WRITEBUFSIZE)) > 0)
-			{
-			    if (buf_write_bytes(&write_info) == FAIL)
-			    {
-				errmsg = (char_u *)_(e_cant_write_to_backup_file_add_bang_to_override);
-				break;
-			    }
-			    ui_breakcheck();
-			    if (got_int)
-			    {
-				errmsg = (char_u *)_(e_interrupted);
-				break;
-			    }
-			}
-
-			if (close(bfd) < 0 && errmsg == NULL)
-			    errmsg = (char_u *)_(e_close_error_for_backup_file_add_bang_to_write_anyway);
-			if (write_info.bw_len < 0)
-			    errmsg = (char_u *)_(e_cant_read_file_for_backup_add_bang_to_write_anyway);
-#ifdef UNIX
-			set_file_time(backup, st_old.st_atime, st_old.st_mtime);
-#endif
-#ifdef HAVE_ACL
-			mch_set_acl(backup, acl);
-#endif
-#if defined(HAVE_SELINUX) || defined(HAVE_SMACK)
-			mch_copy_sec(fname, backup);
-#endif
-#ifdef FEAT_XATTR
-			mch_copy_xattr(fname, backup);
-#endif
-#ifdef MSWIN
-			(void)mch_copy_file_attribute(fname, backup);
-#endif
-			break;
-		    }
-		}
-	    }
-    nobackup:
-	    close(fd);		// ignore errors for closing read file
-	    mnv_free(copybuf);
-
-	    if (backup == NULL && errmsg == NULL)
-		errmsg = (char_u *)_(e_cannot_create_backup_file_add_bang_to_write_anyway);
-	    // ignore errors when forceit is TRUE
-	    if ((some_error || errmsg != NULL) && !forceit)
-	    {
-		retval = FAIL;
-		goto fail;
-	    }
-	    errmsg = NULL;
-	}
-	else
-	{
-	    char_u	*dirp;
-	    char_u	*p;
-	    char_u	*rootname;
-
-	    // Make a backup by renaming the original file.
-
-	    // If 'cpoptions' includes the "W" flag, we don't want to
-	    // overwrite a read-only file.  But rename may be possible
-	    // anyway, thus we need an extra check here.
-	    if (file_readonly && mnv_strchr(p_cpo, CPO_FWRITE) != NULL)
-	    {
-		errnum = (char_u *)"E504: ";
-		errmsg = (char_u *)_(e_is_read_only_cannot_override_W_in_cpoptions);
-		goto fail;
-	    }
-
-	    // Form the backup file name - change path/fo.o.h to
-	    // path/fo.o.h.bak Try all directories in 'backupdir', first one
-	    // that works is used.
-	    dirp = p_bdir;
-	    while (*dirp)
-	    {
-		int IObufflen UNUSED;
-
-		// Isolate one directory name and make the backup file name.
-		IObufflen = copy_option_part(&dirp, IObuff, IOSIZE, ",");
-
-#if defined(UNIX) || defined(MSWIN)
-		p = IObuff + IObufflen;
-		if (after_pathsep(IObuff, p) && p[-1] == p[-2])
-		    // path ends with '//', use full path
-		    if ((p = make_percent_swname(IObuff, p, fname)) != NULL)
-		    {
-			backup = modname(p, backup_ext, FALSE);
-			mnv_free(p);
-		    }
-#endif
-		if (backup == NULL)
-		{
-		    rootname = get_file_in_dir(fname, IObuff);
-		    if (rootname == NULL)
-			backup = NULL;
-		    else
-		    {
-			backup = buf_modname(
-				(buf->b_p_sn || buf->b_shortname),
-						rootname, backup_ext, FALSE);
-			mnv_free(rootname);
-		    }
-		}
-
-		if (backup != NULL)
-		{
-		    // If we are not going to keep the backup file, don't
-		    // delete an existing one, try to use another name.
-		    // Change one character, just before the extension.
-		    if (!p_bk && mch_getperm(backup) >= 0)
-		    {
-			p = backup + STRLEN(backup) - 1 - STRLEN(backup_ext);
-			if (p < backup)	// empty file name ???
-			    p = backup;
-			*p = 'z';
-			while (*p > 'a' && mch_getperm(backup) >= 0)
-			    --*p;
-			// They all exist??? Must be something wrong!
-			if (*p == 'a')
-			    MNV_CLEAR(backup);
-		    }
-		}
-		if (backup != NULL)
-		{
-		    // Delete any existing backup and move the current version
-		    // to the backup.	For safety, we don't remove the backup
-		    // until the write has finished successfully. And if the
-		    // 'backup' option is set, leave it around.
-
-		    // If the renaming of the original file to the backup file
-		    // works, quit here.
-		    if (mnv_rename(fname, backup) == 0)
-			break;
-
-		    MNV_CLEAR(backup);   // don't do the rename below
-		}
-	    }
-	    if (backup == NULL && !forceit)
-	    {
-		errmsg = (char_u *)_(e_cant_make_backup_file_add_bang_to_write_anyway);
-		goto fail;
-	    }
-	}
-    }
-
-#if defined(UNIX)
-    // When using ":w!" and the file was read-only: make it writable
-    if (forceit && perm >= 0 && !(perm & 0200) && st_old.st_uid == getuid()
-				     && mnv_strchr(p_cpo, CPO_FWRITE) == NULL)
-    {
-	perm |= 0200;
-	(void)mch_setperm(fname, perm);
-	made_writable = TRUE;
-    }
-#endif
-
-    // When using ":w!" and writing to the current file, 'readonly' makes no
-    // sense, reset it, unless 'Z' appears in 'cpoptions'.
-    if (forceit && overwriting && mnv_strchr(p_cpo, CPO_KEEPRO) == NULL)
-    {
-	buf->b_p_ro = FALSE;
-	need_maketitle = TRUE;	    // set window title later
-	status_redraw_all();	    // redraw status lines later
-    }
-
-    if (end > buf->b_ml.ml_line_count)
-	end = buf->b_ml.ml_line_count;
-    if (buf->b_ml.ml_flags & ML_EMPTY)
-	start = end + 1;
-
-    // If the original file is being overwritten, there is a small chance that
-    // we crash in the middle of writing. Therefore the file is preserved now.
-    // This makes all block numbers positive so that recovery does not need
-    // the original file.
-    // Don't do this if there is a backup file and we are exiting.
-    if (reset_changed && !newfile && overwriting
-					      && !(exiting && backup != NULL))
-    {
-	ml_preserve(buf, FALSE);
-	if (got_int)
-	{
-	    errmsg = (char_u *)_(e_interrupted);
-	    goto restore_backup;
-	}
-    }
-
-#ifdef VMS
-    vms_remove_version(fname); // remove version
-#endif
-    // Default: write the file directly.  May write to a temp file for
-    // multi-byte conversion.
-    wfname = fname;
-
-    // Check for forced 'fileencoding' from "++opt=val" argument.
-    if (eap != NULL && eap->force_enc != 0)
-    {
-	fenc = eap->cmd + eap->force_enc;
-	fenc = enc_canonize(fenc);
-	fenc_tofree = fenc;
-    }
-    else
-	fenc = buf->b_p_fenc;
-
-    // Check if the file needs to be converted.
-    converted = need_conversion(fenc);
-
-    // Check if UTF-8 to UCS-2/4 or Latin1 conversion needs to be done.  Or
-    // Latin1 to Unicode conversion.  This is handled in buf_write_bytes().
-    // Prepare the flags for it and allocate bw_conv_buf when needed.
-    if (converted && (enc_utf8 || STRCMP(p_enc, "latin1") == 0))
-    {
-	wb_flags = get_fio_flags(fenc);
-	if (wb_flags & (FIO_UCS2 | FIO_UCS4 | FIO_UTF16 | FIO_UTF8))
-	{
-	    // overallocate a bit, in case we read incomplete multi-byte chars
-	    int size = bufsize + CONV_RESTLEN;
-	    // Need to allocate a buffer to translate into.
-	    if (wb_flags & (FIO_UCS2 | FIO_UTF16 | FIO_UTF8))
-		write_info.bw_conv_buflen = size * 2;
-	    else // FIO_UCS4
-		write_info.bw_conv_buflen = size * 4;
-	    write_info.bw_conv_buf = alloc(write_info.bw_conv_buflen);
-	    if (write_info.bw_conv_buf == NULL)
-		end = 0;
-	}
-    }
-
-#ifdef MSWIN
-    if (converted && wb_flags == 0 && (wb_flags = get_win_fio_flags(fenc)) != 0)
-    {
-	// Convert UTF-8 -> UCS-2 and UCS-2 -> DBCS.  Worst-case * 4:
-	write_info.bw_conv_buflen = bufsize * 4;
-	write_info.bw_conv_buf = alloc(write_info.bw_conv_buflen);
-	if (write_info.bw_conv_buf == NULL)
-	    end = 0;
-    }
-#endif
-
-#ifdef MACOS_CONVERT
-    if (converted && wb_flags == 0 && (wb_flags = get_mac_fio_flags(fenc)) != 0)
-    {
-	write_info.bw_conv_buflen = bufsize * 3;
-	write_info.bw_conv_buf = alloc(write_info.bw_conv_buflen);
-	if (write_info.bw_conv_buf == NULL)
-	    end = 0;
-    }
-#endif
-
-#if defined(FEAT_EVAL) || defined(USE_ICONV)
-    if (converted && wb_flags == 0)
-    {
-# ifdef USE_ICONV
-	// Use iconv() conversion when conversion is needed and it's not done
-	// internally.
-	write_info.bw_iconv_fd = (iconv_t)my_iconv_open(fenc,
-					enc_utf8 ? (char_u *)"utf-8" : p_enc);
-	if (write_info.bw_iconv_fd != (iconv_t)-1)
-	{
-	    // We're going to use iconv(), allocate a buffer to convert in.
-	    write_info.bw_conv_buflen = bufsize * ICONV_MULT;
-	    write_info.bw_conv_buf = alloc(write_info.bw_conv_buflen);
-	    if (write_info.bw_conv_buf == NULL)
-		end = 0;
-	    write_info.bw_first = TRUE;
-	}
-#  ifdef FEAT_EVAL
-	else
-#  endif
-# endif
-
-# ifdef FEAT_EVAL
-	    // When the file needs to be converted with 'charconvert' after
-	    // writing, write to a temp file instead and let the conversion
-	    // overwrite the original file.
-	    if (*p_ccv != NUL)
-	    {
-		wfname = mnv_tempname('w', FALSE);
-		if (wfname == NULL)	// Can't write without a tempfile!
-		{
-		    errmsg = (char_u *)_(e_cant_find_temp_file_for_writing);
-		    goto restore_backup;
-		}
-	    }
-# endif
-    }
-#endif
-    if (converted && wb_flags == 0
-#ifdef USE_ICONV
-	    && write_info.bw_iconv_fd == (iconv_t)-1
-#endif
-#ifdef FEAT_EVAL
-	    && wfname == fname
-#endif
-	    )
-    {
-	if (!forceit)
-	{
-	    errmsg = (char_u *)_(e_cannot_convert_add_bang_to_write_without_conversion);
-	    goto restore_backup;
-	}
-	notconverted = TRUE;
-    }
-
-    // If conversion is taking place, we may first pretend to write and check
-    // for conversion errors.  Then loop again to write for real.
-    // When not doing conversion this writes for real right away.
-    for (checking_conversion = TRUE; ; checking_conversion = FALSE)
-    {
-	// There is no need to check conversion when:
-	// - there is no conversion
-	// - we make a backup file, that can be restored in case of conversion
-	//   failure.
-	if (!converted || dobackup)
-	    checking_conversion = FALSE;
-
-	if (checking_conversion)
-	{
-	    // Make sure we don't write anything.
-	    fd = -1;
-	    write_info.bw_fd = fd;
-	}
-	else
-	{
-#ifdef HAVE_FTRUNCATE
-# define TRUNC_ON_OPEN 0
-#else
-# define TRUNC_ON_OPEN O_TRUNC
-#endif
-	    // Open the file "wfname" for writing.
-	    // We may try to open the file twice: If we can't write to the file
-	    // and forceit is TRUE we delete the existing file and try to
-	    // create a new one. If this still fails we may have lost the
-	    // original file!  (this may happen when the user reached his
-	    // quotum for number of files).
-	    // Appending will fail if the file does not exist and forceit is
-	    // FALSE.
-	    while ((fd = mch_open((char *)wfname, O_WRONLY | O_EXTRA | (append
-				? (forceit ? (O_APPEND | O_CREAT) : O_APPEND)
-				: (O_CREAT | TRUNC_ON_OPEN))
-				, perm < 0 ? 0666 : (perm & 0777))) < 0)
-	    {
-		// A forced write will try to create a new file if the old one
-		// is still readonly. This may also happen when the directory
-		// is read-only. In that case the mch_remove() will fail.
-		if (errmsg == NULL)
-		{
-#ifdef UNIX
-		    stat_T	st;
-
-		    // Don't delete the file when it's a hard or symbolic link.
-		    if ((!newfile && st_old.st_nlink > 1)
-			    || (mch_lstat((char *)fname, &st) == 0
-				&& (st.st_dev != st_old.st_dev
-				    || st.st_ino != st_old.st_ino)))
-			errmsg =
-			      (char_u *)_(e_cant_open_linked_file_for_writing);
-		    else
-#endif
-		    {
-			errmsg = (char_u *)_(e_cant_open_file_for_writing);
-			if (forceit && mnv_strchr(p_cpo, CPO_FWRITE) == NULL
-								  && perm >= 0)
-			{
-#ifdef UNIX
-			    // we write to the file, thus it should be marked
-			    // writable after all
-			    if (!(perm & 0200))
-				made_writable = TRUE;
-			    perm |= 0200;
-			    if (st_old.st_uid != getuid()
-						  || st_old.st_gid != getgid())
-				perm &= 0777;
-#endif
-			    if (!append)  // don't remove when appending
-				mch_remove(wfname);
-			    continue;
-			}
-		    }
-		}
-
-restore_backup:
-		{
-		    stat_T	st;
-
-		    // If we failed to open the file, we don't need a backup.
-		    // Throw it away.  If we moved or removed the original file
-		    // try to put the backup in its place.
-		    if (backup != NULL && wfname == fname)
-		    {
-			if (backup_copy)
-			{
-			    // There is a small chance that we removed the
-			    // original, try to move the copy in its place.
-			    // This may not work if the mnv_rename() fails.
-			    // In that case we leave the copy around.
-
-			    // If file does not exist, put the copy in its
-			    // place
-			    if (mch_stat((char *)fname, &st) < 0)
-				mnv_rename(backup, fname);
-			    // if original file does exist throw away the copy
-			    if (mch_stat((char *)fname, &st) >= 0)
-				mch_remove(backup);
-			}
-			else
-			{
-			    // try to put the original file back
-			    mnv_rename(backup, fname);
-			}
-		    }
-
-		    // if original file no longer exists give an extra warning
-		    if (!newfile && mch_stat((char *)fname, &st) < 0)
-			end = 0;
-		}
-
-		if (wfname != fname)
-		    mnv_free(wfname);
-		goto fail;
-	    }
-	    write_info.bw_fd = fd;
-
-#if defined(UNIX)
-	    {
-		stat_T	st;
-
-		// Double check we are writing the intended file before making
-		// any changes.
-		if (overwriting
-			&& (!dobackup || backup_copy)
-			&& fname == wfname
-			&& perm >= 0
-			&& mch_fstat(fd, &st) == 0
-			&& st.st_ino != st_old.st_ino)
-		{
-		    close(fd);
-		    errmsg = (char_u *)_(e_file_changed_while_writing);
-		    goto fail;
-		}
-	    }
-#endif
-#ifdef HAVE_FTRUNCATE
-	    if (!append)
-		mnv_ignored = ftruncate(fd, (off_t)0);
-#endif
-
-#if defined(MSWIN)
-	    if (backup != NULL && overwriting && !append)
-		(void)mch_copy_file_attribute(backup, wfname);
-
-	    if (!overwriting && !append)
-	    {
-		if (buf->b_ffname != NULL)
-		    (void)mch_copy_file_attribute(buf->b_ffname, wfname);
-		// Should copy resource fork
-	    }
-#endif
-
-#ifdef FEAT_CRYPT
-	    if (*buf->b_p_key != NUL && !filtering)
-	    {
-		char_u		*header;
-		int		header_len;
-
-		buf->b_cryptstate = crypt_create_for_writing(
-						      crypt_get_method_nr(buf),
-					   buf->b_p_key, &header, &header_len);
-		if (buf->b_cryptstate == NULL || header == NULL)
-		    end = 0;
-		else
-		{
-		    // Write magic number, so that MNV knows how this file is
-		    // encrypted when reading it back.
-		    write_info.bw_buf = header;
-		    write_info.bw_len = header_len;
-		    write_info.bw_flags = FIO_NOCONVERT;
-		    if (buf_write_bytes(&write_info) == FAIL)
-			end = 0;
-		    wb_flags |= FIO_ENCRYPTED;
-		    mnv_free(header);
-		}
-	    }
-#endif
-	}
-	errmsg = NULL;
-
-	write_info.bw_buf = buffer;
-	nchars = 0;
-
-	// use "++bin", "++nobin" or 'binary'
-	if (eap != NULL && eap->force_bin != 0)
-	    write_bin = (eap->force_bin == FORCE_BIN);
-	else
-	    write_bin = buf->b_p_bin;
-
-	// The BOM is written just after the encryption magic number.
-	// Skip it when appending and the file already existed, the BOM only
-	// makes sense at the start of the file.
-	if (buf->b_p_bomb && !write_bin && (!append || perm < 0))
-	{
-	    write_info.bw_len = make_bom(buffer, fenc);
-	    if (write_info.bw_len > 0)
-	    {
-		// don't convert, do encryption
-		write_info.bw_flags = FIO_NOCONVERT | wb_flags;
-		if (buf_write_bytes(&write_info) == FAIL)
-		    end = 0;
-		else
-		    nchars += write_info.bw_len;
-	    }
-	}
-	write_info.bw_start_lnum = start;
-
-#ifdef FEAT_PERSISTENT_UNDO
-	write_undo_file = (buf->b_p_udf
-			    && overwriting
-			    && !append
-			    && !filtering
-# ifdef CRYPT_NOT_INPLACE
-			    // writing undo file requires
-			    // crypt_encode_inplace()
-			    && (buf->b_cryptstate == NULL
-				|| crypt_works_inplace(buf->b_cryptstate))
-# endif
-			    && reset_changed
-			    && !checking_conversion);
-# ifdef CRYPT_NOT_INPLACE
-	// remove undo file if encrypting it is not possible
-	if (buf->b_p_udf
-		&& overwriting
-		&& !append
-		&& !filtering
-		&& !checking_conversion
-		&& buf->b_cryptstate != NULL
-		&& !crypt_works_inplace(buf->b_cryptstate))
-	    u_undofile_reset_and_delete(buf);
-# endif
-	if (write_undo_file)
-	    // Prepare for computing the hash value of the text.
-	    sha256_start(&sha_ctx);
-#endif
-
-	write_info.bw_len = bufsize;
-	write_info.bw_flags = wb_flags;
-	fileformat = get_fileformat_force(buf, eap);
-	s = buffer;
-	len = 0;
-	for (lnum = start; lnum <= end; ++lnum)
-	{
-	    // The next while loop is done once for each character written.
-	    // Keep it fast!
-	    ptr = ml_get_buf(buf, lnum, FALSE) - 1;
-#ifdef FEAT_PERSISTENT_UNDO
-	    if (write_undo_file)
-		sha256_update(&sha_ctx, ptr + 1,
-					      (UINT32_T)(STRLEN(ptr + 1) + 1));
-#endif
-	    while ((c = *++ptr) != NUL)
-	    {
-		if (c == NL)
-		    *s = NUL;		// replace newlines with NULs
-		else if (c == CAR && fileformat == EOL_MAC)
-		    *s = NL;		// Mac: replace CRs with NLs
-		else
-		    *s = c;
-		++s;
-		if (++len != bufsize)
-		    continue;
-#ifdef FEAT_CRYPT
-		if (write_info.bw_fd > 0 && lnum == end
-			&& (write_info.bw_flags & FIO_ENCRYPTED)
-			&& *buf->b_p_key != NUL && !filtering
-			&& *ptr == NUL)
-		    write_info.bw_finish = TRUE;
-#endif
-		if (buf_write_bytes(&write_info) == FAIL)
-		{
-		    end = 0;		// write error: break loop
-		    break;
-		}
-		nchars += bufsize;
-		s = buffer;
-		len = 0;
-		write_info.bw_start_lnum = lnum;
-	    }
-	    // write failed or last line has no EOL: stop here
-	    if (end == 0
-		    || (lnum == end
-			&& (write_bin || !buf->b_p_fixeol)
-			&& ((write_bin && lnum == buf->b_no_eol_lnum)
-			    || (lnum == buf->b_ml.ml_line_count
-							   && !buf->b_p_eol))))
-	    {
-		++lnum;			// written the line, count it
-		no_eol = TRUE;
-		break;
-	    }
-	    if (fileformat == EOL_UNIX)
-		*s++ = NL;
-	    else
-	    {
-		*s++ = CAR;		    // EOL_MAC or EOL_DOS: write CR
-		if (fileformat == EOL_DOS)  // write CR-NL
-		{
-		    if (++len == bufsize)
-		    {
-			if (buf_write_bytes(&write_info) == FAIL)
-			{
-			    end = 0;	// write error: break loop
-			    break;
-			}
-			nchars += bufsize;
-			s = buffer;
-			len = 0;
-		    }
-		    *s++ = NL;
-		}
-	    }
-	    if (++len == bufsize && end)
-	    {
-		if (buf_write_bytes(&write_info) == FAIL)
-		{
-		    end = 0;		// write error: break loop
-		    break;
-		}
-		nchars += bufsize;
-		s = buffer;
-		len = 0;
-
-		ui_breakcheck();
-		if (got_int)
-		{
-		    end = 0;		// Interrupted, break loop
-		    break;
-		}
-	    }
-#ifdef VMS
-	    // On VMS there is a problem: newlines get added when writing
-	    // blocks at a time. Fix it by writing a line at a time.
-	    // This is much slower!
-	    // Explanation: VAX/DECC RTL insists that records in some RMS
-	    // structures end with a newline (carriage return) character, and
-	    // if they don't it adds one.
-	    // With other RMS structures it works perfect without this fix.
-# ifndef MIN
-// Older DECC compiler for VAX doesn't define MIN()
-#  define MIN(a, b) ((a) < (b) ? (a) : (b))
-# endif
-	    if (buf->b_fab_rfm == FAB$C_VFC
-		    || ((buf->b_fab_rat & (FAB$M_FTN | FAB$M_CR)) != 0))
-	    {
-		int b2write;
-
-		buf->b_fab_mrs = (buf->b_fab_mrs == 0
-			? MIN(4096, bufsize)
-			: MIN(buf->b_fab_mrs, bufsize));
-
-		b2write = len;
-		while (b2write > 0)
-		{
-		    write_info.bw_len = MIN(b2write, buf->b_fab_mrs);
-		    if (buf_write_bytes(&write_info) == FAIL)
-		    {
-			end = 0;
-			break;
-		    }
-		    b2write -= MIN(b2write, buf->b_fab_mrs);
-		}
-		write_info.bw_len = bufsize;
-		nchars += len;
-		s = buffer;
-		len = 0;
-	    }
-#endif
-	}
-	if (len > 0 && end > 0)
-	{
-	    write_info.bw_len = len;
-#ifdef FEAT_CRYPT
-	    if (write_info.bw_fd > 0 && lnum >= end
-		    && (write_info.bw_flags & FIO_ENCRYPTED)
-		    && *buf->b_p_key != NUL && !filtering)
-		write_info.bw_finish = TRUE;
-#endif
-	    if (buf_write_bytes(&write_info) == FAIL)
-		end = 0;		    // write error
-	    nchars += len;
-	}
-
-	if (!buf->b_p_fixeol && buf->b_p_eof)
-	{
-	    // write trailing CTRL-Z
-	    (void)write_eintr(write_info.bw_fd, "\x1a", 1);
-	    nchars++;
-	}
-
-	// Stop when writing done or an error was encountered.
-	if (!checking_conversion || end == 0)
-	    break;
-
-	// If no error happened until now, writing should be ok, so loop to
-	// really write the buffer.
-    }
-
-    // If we started writing, finish writing. Also when an error was
-    // encountered.
-    if (!checking_conversion)
-    {
-#if defined(UNIX) && defined(HAVE_FSYNC)
-	// On many journaling file systems there is a bug that causes both the
-	// original and the backup file to be lost when halting the system
-	// right after writing the file.  That's because only the meta-data is
-	// journalled.  Syncing the file slows down the system, but assures it
-	// has been written to disk and we don't lose it.
-	// For a device do try the fsync() but don't complain if it does not
-	// work (could be a pipe).
-	// If the 'fsync' option is FALSE, don't fsync().  Useful for laptops.
-	if ((buf->b_p_fs >= 0 ? buf->b_p_fs : p_fs) && mnv_fsync(fd) != 0
-		&& !device)
-	{
-	    errmsg = (char_u *)_(e_fsync_failed);
-	    end = 0;
-	}
-#endif
-
-#if defined(HAVE_SELINUX) || defined(HAVE_SMACK) || defined(FEAT_XATTR)
-	// Probably need to set the security context.
-	if (!backup_copy)
-	{
-# if defined(HAVE_SELINUX) || defined(HAVE_SMACK)
-	    mch_copy_sec(backup, wfname);
-# endif
-# ifdef FEAT_XATTR
-	    mch_copy_xattr(backup, wfname);
-# endif
-	}
-#endif
-
-#ifdef UNIX
-	// When creating a new file, set its owner/group to that of the
-	// original file.  Get the new device and inode number.
-	if (backup != NULL && !backup_copy)
-	{
-# ifdef HAVE_FCHOWN
-	    stat_T	st;
-
-	    // Don't change the owner when it's already OK, some systems remove
-	    // permission or ACL stuff.
-	    if (mch_stat((char *)wfname, &st) < 0
-		    || st.st_uid != st_old.st_uid
-		    || st.st_gid != st_old.st_gid)
-	    {
-		// changing owner might not be possible
-		mnv_ignored = fchown(fd, st_old.st_uid, -1);
-		// if changing group fails clear the group permissions
-		if (fchown(fd, -1, st_old.st_gid) == -1 && perm > 0)
-		    perm &= ~070;
-	    }
-# endif
-	    buf_setino(buf);
-	}
-	else if (!buf->b_dev_valid)
-	    // Set the inode when creating a new file.
-	    buf_setino(buf);
-#endif
-
-#ifdef UNIX
-	if (made_writable)
-	    perm &= ~0200;	// reset 'w' bit for security reasons
-#endif
-#ifdef HAVE_FCHMOD
-	// set permission of new file same as old file
-	if (perm >= 0)
-	    (void)mch_fsetperm(fd, perm);
-#endif
-	if (close(fd) != 0)
-	{
-	    errmsg = (char_u *)_(e_close_failed);
-	    end = 0;
-	}
-
-#ifndef HAVE_FCHMOD
-	// set permission of new file same as old file
-	if (perm >= 0)
-	    (void)mch_setperm(wfname, perm);
-#endif
-#ifdef HAVE_ACL
-	// Probably need to set the ACL before changing the user (can't set the
-	// ACL on a file the user doesn't own).
-	// On Solaris, with ZFS and the aclmode property set to "discard" (the
-	// default), chmod() discards all part of a file's ACL that don't
-	// represent the mode of the file.  It's non-trivial for us to discover
-	// whether we're in that situation, so we simply always re-set the ACL.
-# ifndef HAVE_SOLARIS_ZFS_ACL
-	if (!backup_copy)
-# endif
-	    mch_set_acl(wfname, acl);
-#endif
-#ifdef FEAT_CRYPT
-	if (buf->b_cryptstate != NULL)
-	{
-	    crypt_free_state(buf->b_cryptstate);
-	    buf->b_cryptstate = NULL;
-	}
-#endif
-
-#if defined(FEAT_EVAL)
-	if (wfname != fname)
-	{
-	    // The file was written to a temp file, now it needs to be
-	    // converted with 'charconvert' to (overwrite) the output file.
-	    if (end != 0)
-	    {
-		if (eval_charconvert(enc_utf8 ? (char_u *)"utf-8" : p_enc,
-						  fenc, wfname, fname) == FAIL)
-		{
-		    write_info.bw_conv_error = TRUE;
-		    end = 0;
-		}
-	    }
-	    mch_remove(wfname);
-	    mnv_free(wfname);
-	}
-#endif
-    }
-
-    if (end == 0)
-    {
-	// Error encountered.
-	if (errmsg == NULL)
-	{
-	    if (write_info.bw_conv_error)
-	    {
-		if (write_info.bw_conv_error_lnum == 0)
-		    errmsg = (char_u *)_(e_write_error_conversion_failed_make_fenc_empty_to_override);
-		else
-		{
-		    errmsg_allocated = TRUE;
-		    errmsg = alloc(300);
-		    if (errmsg == NULL)
-			goto fail;
-		    mnv_snprintf((char *)errmsg, 300, _(e_write_error_conversion_failed_in_line_nr_make_fenc_empty_to_override),
-					 (long)write_info.bw_conv_error_lnum);
-		}
-	    }
-	    else if (got_int)
-		errmsg = (char_u *)_(e_interrupted);
-	    else
-		errmsg = (char_u *)_(e_write_error_file_system_full);
-	}
-
-	// If we have a backup file, try to put it in place of the new file,
-	// because the new file is probably corrupt.  This avoids losing the
-	// original file when trying to make a backup when writing the file a
-	// second time.
-	// When "backup_copy" is set we need to copy the backup over the new
-	// file.  Otherwise rename the backup file.
-	// If this is OK, don't give the extra warning message.
-	if (backup != NULL)
-	{
-	    if (backup_copy)
-	    {
-		// This may take a while, if we were interrupted let the user
-		// know we got the message.
-		if (got_int)
-		{
-		    msg(_(e_interrupted));
-		    out_flush();
-		}
-		if ((fd = mch_open((char *)backup, O_RDONLY | O_EXTRA, 0)) >= 0)
-		{
-		    if ((write_info.bw_fd = mch_open((char *)fname,
-				    O_WRONLY | O_CREAT | O_TRUNC | O_EXTRA,
-							   perm & 0777)) >= 0)
-		    {
-			// copy the file.
-			write_info.bw_buf = smallbuf;
-			write_info.bw_flags = FIO_NOCONVERT;
-			while ((write_info.bw_len = read_eintr(fd, smallbuf,
-						      SMALLBUFSIZE)) > 0)
-			    if (buf_write_bytes(&write_info) == FAIL)
-				break;
-
-			if (close(write_info.bw_fd) >= 0
-						   && write_info.bw_len == 0)
-			    end = 1;		// success
-		    }
-		    close(fd);	// ignore errors for closing read file
-		}
-	    }
-	    else
-	    {
-		if (mnv_rename(backup, fname) == 0)
-		    end = 1;
-	    }
-	}
-	goto fail;
-    }
-
-    lnum -= start;	    // compute number of written lines
-    --no_wait_return;	    // may wait for return now
-
-#if !(defined(UNIX) || defined(VMS))
-    fname = sfname;	    // use shortname now, for the messages
-#endif
-    if (!filtering)
-    {
-	msg_add_fname(buf, fname);	// put fname in IObuff with quotes
-	c = FALSE;
-	if (write_info.bw_conv_error)
-	{
-	    STRCAT(IObuff, _(" CONVERSION ERROR"));
-	    c = TRUE;
-	    if (write_info.bw_conv_error_lnum != 0)
-		mnv_snprintf_add((char *)IObuff, IOSIZE, _(" in line %ld;"),
-			(long)write_info.bw_conv_error_lnum);
-	}
-	else if (notconverted)
-	{
-	    STRCAT(IObuff, _("[NOT converted]"));
-	    c = TRUE;
-	}
-	else if (converted)
-	{
-	    STRCAT(IObuff, _("[converted]"));
-	    c = TRUE;
-	}
-	if (device)
-	{
-	    STRCAT(IObuff, _("[Device]"));
-	    c = TRUE;
-	}
-	else if (newfile)
-	{
-	    STRCAT(IObuff, new_file_message());
-	    c = TRUE;
-	}
-	if (no_eol)
-	{
-	    msg_add_eol();
-	    c = TRUE;
-	}
-	// may add [unix/dos/mac]
-	if (msg_add_fileformat(fileformat))
-	    c = TRUE;
-#ifdef FEAT_CRYPT
-	if (wb_flags & FIO_ENCRYPTED)
-	{
-	    crypt_append_msg(buf);
-	    c = TRUE;
-	}
-#endif
-	msg_add_lines(c, (long)lnum, nchars);	// add line/char count
-	if (!shortmess(SHM_WRITE))
-	{
-	    if (append)
-		STRCAT(IObuff, shortmess(SHM_WRI) ? _(" [a]") : _(" appended"));
-	    else
-		STRCAT(IObuff, shortmess(SHM_WRI) ? _(" [w]") : _(" written"));
-	}
-
-	set_keep_msg((char_u *)msg_trunc_attr((char *)IObuff, FALSE, 0), 0);
-    }
-
-    // When written everything correctly: reset 'modified'.  Unless not
-    // writing to the original file and '+' is not in 'cpoptions'.
-    if (reset_changed && whole && !append
-	    && !write_info.bw_conv_error
-	    && (overwriting || mnv_strchr(p_cpo, CPO_PLUS) != NULL))
-    {
-	unchanged(buf, TRUE, FALSE);
-	// b:changedtick may be incremented in unchanged() but that should not
-	// trigger a TextChanged event.
-	if (buf->b_last_changedtick + 1 == CHANGEDTICK(buf))
-	    buf->b_last_changedtick = CHANGEDTICK(buf);
-	u_unchanged(buf);
-	u_update_save_nr(buf);
-    }
-
-    // If written to the current file, update the timestamp of the swap file
-    // and reset the BF_WRITE_MASK flags. Also sets buf->b_mtime.
-    if (overwriting)
-    {
-	ml_timestamp(buf);
-	if (append)
-	    buf->b_flags &= ~BF_NEW;
-	else
-	    buf->b_flags &= ~BF_WRITE_MASK;
-    }
-
-    // If we kept a backup until now, and we are in patch mode, then we make
-    // the backup file our 'original' file.
-    if (*p_pm && dobackup)
-    {
-	char *org = (char *)buf_modname((buf->b_p_sn || buf->b_shortname),
-							  fname, p_pm, FALSE);
-
-	if (backup != NULL)
-	{
-	    stat_T	st;
-
-	    // If the original file does not exist yet
-	    // the current backup file becomes the original file
-	    if (org == NULL)
-		emsg(_(e_patchmode_cant_save_original_file));
-	    else if (mch_stat(org, &st) < 0)
-	    {
-		mnv_rename(backup, (char_u *)org);
-		MNV_CLEAR(backup);	    // don't delete the file
-#ifdef UNIX
-		set_file_time((char_u *)org, st_old.st_atime, st_old.st_mtime);
-#endif
-	    }
-	}
-	// If there is no backup file, remember that a (new) file was
-	// created.
-	else
-	{
-	    int empty_fd;
-
-	    if (org == NULL
-		    || (empty_fd = mch_open(org,
-				      O_CREAT | O_EXTRA | O_EXCL | O_NOFOLLOW,
-					perm < 0 ? 0666 : (perm & 0777))) < 0)
-	      emsg(_(e_patchmode_cant_touch_empty_original_file));
-	    else
-	      close(empty_fd);
-	}
-	if (org != NULL)
-	{
-	    mch_setperm((char_u *)org, mch_getperm(fname) & 0777);
-	    mnv_free(org);
-	}
-    }
-
-    // Remove the backup unless 'backup' option is set or there was a
-    // conversion error.
-    if (!p_bk && backup != NULL && !write_info.bw_conv_error
-	    && mch_remove(backup) != 0)
-	emsg(_(e_cant_delete_backup_file));
-
-    goto nofail;
-
-    // Finish up.  We get here either after failure or success.
-fail:
-    --no_wait_return;		// may wait for return now
-nofail:
-
-    // Done saving, we accept changed buffer warnings again
-    buf->b_saving = FALSE;
-
-    mnv_free(backup);
-    if (buffer != smallbuf)
-	mnv_free(buffer);
-    mnv_free(fenc_tofree);
-    mnv_free(write_info.bw_conv_buf);
-#ifdef USE_ICONV
-    if (write_info.bw_iconv_fd != (iconv_t)-1)
-    {
-	iconv_close(write_info.bw_iconv_fd);
-	write_info.bw_iconv_fd = (iconv_t)-1;
-    }
-#endif
-#ifdef HAVE_ACL
-    mch_free_acl(acl);
-#endif
-
-    if (errmsg != NULL)
-    {
-	int numlen = errnum != NULL ? (int)STRLEN(errnum) : 0;
-
-	attr = HL_ATTR(HLF_E);	// set highlight for error messages
-	msg_add_fname(buf,
-#ifndef UNIX
-		sfname
-#else
-		fname
-#endif
-		     );		// put file name in IObuff with quotes
-	if (STRLEN(IObuff) + STRLEN(errmsg) + numlen >= IOSIZE)
-	    IObuff[IOSIZE - STRLEN(errmsg) - numlen - 1] = NUL;
-	// If the error message has the form "is ...", put the error number in
-	// front of the file name.
-	if (errnum != NULL)
-	{
-	    STRMOVE(IObuff + numlen, IObuff);
-	    mch_memmove(IObuff, errnum, (size_t)numlen);
-	}
-	STRCAT(IObuff, errmsg);
-	emsg((char *)IObuff);
-	if (errmsg_allocated)
-	    mnv_free(errmsg);
-
-	retval = FAIL;
-	if (end == 0)
-	{
-	    msg_puts_attr(_("\nWARNING: Original file may be lost or damaged\n"),
-		    attr | MSG_HIST);
-	    msg_puts_attr(_("don't quit the editor until the file is successfully written!"),
-		    attr | MSG_HIST);
-
-	    // Update the timestamp to avoid an "overwrite changed file"
-	    // prompt when writing again.
-	    if (mch_stat((char *)fname, &st_old) >= 0)
-	    {
-		buf_store_time(buf, &st_old, fname);
-		buf->b_mtime_read = buf->b_mtime;
-		buf->b_mtime_read_ns = buf->b_mtime_ns;
-	    }
-	}
-    }
-    msg_scroll = msg_save;
-
-#ifdef FEAT_PERSISTENT_UNDO
-    // When writing the whole file and 'undofile' is set, also write the undo
-    // file.
-    if (retval == OK && write_undo_file)
-    {
-	char_u	    hash[UNDO_HASH_SIZE];
-
-	sha256_finish(&sha_ctx, hash);
-	u_write_undo(NULL, FALSE, buf, hash);
-    }
-#endif
-
-#ifdef FEAT_EVAL
-    if (!should_abort(retval))
-#else
-    if (!got_int)
-#endif
-    {
-	aco_save_T	aco;
-
-	curbuf->b_no_eol_lnum = 0;  // in case it was set by the previous read
-
-	// Apply POST autocommands.
-	// Careful: The autocommands may call buf_write() recursively!
-	// Only do this when a window was found for "buf".
-	aucmd_prepbuf(&aco, buf);
-	if (curbuf == buf)
-	{
-	    if (append)
-		apply_autocmds_exarg(EVENT_FILEAPPENDPOST, fname, fname,
-							   FALSE, curbuf, eap);
-	    else if (filtering)
-		apply_autocmds_exarg(EVENT_FILTERWRITEPOST, NULL, fname,
-							   FALSE, curbuf, eap);
-	    else if (reset_changed && whole)
-		apply_autocmds_exarg(EVENT_BUFWRITEPOST, fname, fname,
-							   FALSE, curbuf, eap);
-	    else
-		apply_autocmds_exarg(EVENT_FILEWRITEPOST, fname, fname,
-							   FALSE, curbuf, eap);
-
-	    // restore curwin/curbuf and a few other things
-	    aucmd_restbuf(&aco);
-	}
-
-#ifdef FEAT_EVAL
-	if (aborting())	    // autocmds may abort script processing
-	    retval = FALSE;
-#endif
-    }
-
-#ifdef FEAT_MNVINFO
-    // Make sure marks will be written out to the mnvinfo file later, even when
-    // the file is new.
-    curbuf->b_marks_read = TRUE;
-#endif
-
-    got_int |= prev_got_int;
-
-    return retval;
-}