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+To: vim_dev@googlegroups.com
+Subject: Patch 7.4.039
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.4.039
+Problem: MS-Windows: MSCV10 and earlier can't handle symlinks to a
+ directory properly.
+Solution: Add stat_symlink_aware() and wstat_symlink_aware(). (Ken Takata)
+Files: src/os_mswin.c, src/os_win32.c, src/os_win32.h
+
+
+*** ../vim-7.4.038/src/os_mswin.c 2013-08-30 16:51:15.000000000 +0200
+--- src/os_mswin.c 2013-09-25 19:09:53.000000000 +0200
+***************
+*** 498,503 ****
+--- 498,595 ----
+ }
+ }
+
++ static int
++ stat_symlink_aware(const char *name, struct stat *stp)
++ {
++ #if defined(_MSC_VER) && _MSC_VER < 1700
++ /* Work around for VC10 or earlier. stat() can't handle symlinks properly.
++ * VC9 or earlier: stat() doesn't support a symlink at all. It retrieves
++ * status of a symlink itself.
++ * VC10: stat() supports a symlink to a normal file, but it doesn't support
++ * a symlink to a directory (always returns an error). */
++ WIN32_FIND_DATA findData;
++ HANDLE hFind, h;
++ DWORD attr = 0;
++ BOOL is_symlink = FALSE;
++
++ hFind = FindFirstFile(name, &findData);
++ if (hFind != INVALID_HANDLE_VALUE)
++ {
++ attr = findData.dwFileAttributes;
++ if ((attr & FILE_ATTRIBUTE_REPARSE_POINT)
++ && (findData.dwReserved0 == IO_REPARSE_TAG_SYMLINK))
++ is_symlink = TRUE;
++ FindClose(hFind);
++ }
++ if (is_symlink)
++ {
++ h = CreateFile(name, FILE_READ_ATTRIBUTES,
++ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
++ OPEN_EXISTING,
++ (attr & FILE_ATTRIBUTE_DIRECTORY)
++ ? FILE_FLAG_BACKUP_SEMANTICS : 0,
++ NULL);
++ if (h != INVALID_HANDLE_VALUE)
++ {
++ int fd, n;
++
++ fd = _open_osfhandle((intptr_t)h, _O_RDONLY);
++ n = _fstat(fd, (struct _stat*)stp);
++ _close(fd);
++ return n;
++ }
++ }
++ #endif
++ return stat(name, stp);
++ }
++
++ #ifdef FEAT_MBYTE
++ static int
++ wstat_symlink_aware(const WCHAR *name, struct _stat *stp)
++ {
++ # if defined(_MSC_VER) && _MSC_VER < 1700
++ /* Work around for VC10 or earlier. _wstat() can't handle symlinks properly.
++ * VC9 or earlier: _wstat() doesn't support a symlink at all. It retrieves
++ * status of a symlink itself.
++ * VC10: _wstat() supports a symlink to a normal file, but it doesn't
++ * support a symlink to a directory (always returns an error). */
++ int n;
++ BOOL is_symlink = FALSE;
++ HANDLE hFind, h;
++ DWORD attr = 0;
++ WIN32_FIND_DATAW findDataW;
++
++ hFind = FindFirstFileW(name, &findDataW);
++ if (hFind != INVALID_HANDLE_VALUE)
++ {
++ attr = findDataW.dwFileAttributes;
++ if ((attr & FILE_ATTRIBUTE_REPARSE_POINT)
++ && (findDataW.dwReserved0 == IO_REPARSE_TAG_SYMLINK))
++ is_symlink = TRUE;
++ FindClose(hFind);
++ }
++ if (is_symlink)
++ {
++ h = CreateFileW(name, FILE_READ_ATTRIBUTES,
++ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
++ OPEN_EXISTING,
++ (attr & FILE_ATTRIBUTE_DIRECTORY)
++ ? FILE_FLAG_BACKUP_SEMANTICS : 0,
++ NULL);
++ if (h != INVALID_HANDLE_VALUE)
++ {
++ int fd;
++
++ fd = _open_osfhandle((intptr_t)h, _O_RDONLY);
++ n = _fstat(fd, stp);
++ _close(fd);
++ return n;
++ }
++ }
++ # endif
++ return _wstat(name, stp);
++ }
++ #endif
+
+ /*
+ * stat() can't handle a trailing '/' or '\', remove it first.
+***************
+*** 534,540 ****
+
+ if (wp != NULL)
+ {
+! n = _wstat(wp, (struct _stat *)stp);
+ vim_free(wp);
+ if (n >= 0)
+ return n;
+--- 626,632 ----
+
+ if (wp != NULL)
+ {
+! n = wstat_symlink_aware(wp, (struct _stat *)stp);
+ vim_free(wp);
+ if (n >= 0)
+ return n;
+***************
+*** 544,550 ****
+ }
+ }
+ #endif
+! return stat(buf, stp);
+ }
+
+ #if defined(FEAT_GUI_MSWIN) || defined(PROTO)
+--- 636,642 ----
+ }
+ }
+ #endif
+! return stat_symlink_aware(buf, stp);
+ }
+
+ #if defined(FEAT_GUI_MSWIN) || defined(PROTO)
+*** ../vim-7.4.038/src/os_win32.c 2013-08-30 17:29:10.000000000 +0200
+--- src/os_win32.c 2013-09-25 19:09:53.000000000 +0200
+***************
+*** 78,93 ****
+ # endif
+ #endif
+
+- /*
+- * Reparse Point
+- */
+- #ifndef FILE_ATTRIBUTE_REPARSE_POINT
+- # define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
+- #endif
+- #ifndef IO_REPARSE_TAG_SYMLINK
+- # define IO_REPARSE_TAG_SYMLINK 0xA000000C
+- #endif
+-
+ /* Record all output and all keyboard & mouse input */
+ /* #define MCH_WRITE_DUMP */
+
+--- 78,83 ----
+*** ../vim-7.4.038/src/os_win32.h 2013-07-21 17:53:13.000000000 +0200
+--- src/os_win32.h 2013-09-25 19:09:53.000000000 +0200
+***************
+*** 130,135 ****
+--- 130,148 ----
+ # define DFLT_MAXMEMTOT (5*1024) /* use up to 5 Mbyte for Vim */
+ #endif
+
++ /*
++ * Reparse Point
++ */
++ #ifndef FILE_ATTRIBUTE_REPARSE_POINT
++ # define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
++ #endif
++ #ifndef IO_REPARSE_TAG_MOUNT_POINT
++ # define IO_REPARSE_TAG_MOUNT_POINT 0xA0000003
++ #endif
++ #ifndef IO_REPARSE_TAG_SYMLINK
++ # define IO_REPARSE_TAG_SYMLINK 0xA000000C
++ #endif
++
+ #if defined(_MSC_VER) || defined(__BORLANDC__)
+ /* Support for __try / __except. All versions of MSVC and Borland C are
+ * expected to have this. Any other compilers that support it? */
+*** ../vim-7.4.038/src/version.c 2013-09-25 18:54:20.000000000 +0200
+--- src/version.c 2013-09-25 19:08:55.000000000 +0200
+***************
+*** 740,741 ****
+--- 740,743 ----
+ { /* Add new patch number below this line */
++ /**/
++ 39,
+ /**/
+
+--
+ A cow comes flying over the battlements, lowing aggressively. The cow
+ lands on GALAHAD'S PAGE, squashing him completely.
+ "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
+/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\ an exciting new programming language -- http://www.Zimbu.org ///
+ \\\ help me help AIDS victims -- http://ICCF-Holland.org ///