diff --git a/7.3.815 b/7.3.815
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+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.815
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.815
+Problem:    Building with Cygwin and Ruby doesn't work.
+Solution:   Copy some things from the MingW build file. (Ken Takata)
+Files:	    src/Make_cyg.mak
+
+
+*** ../vim-7.3.814/src/Make_cyg.mak	2013-01-23 13:55:16.000000000 +0100
+--- src/Make_cyg.mak	2013-02-13 17:03:23.000000000 +0100
+***************
+*** 47,54 ****
+  #               (i386)
+  # USEDLL	no or yes: set to yes to use the Runtime library DLL (no)
+  #		For USEDLL=yes the cygwin1.dll is required to run Vim.
+! #		"no" does not work with latest version of Cygwin, use
+! #		Make_ming.mak instead.  Or set CC to gcc-3 and add
+  #		-L/lib/w32api to EXTRA_LIBS.
+  # POSTSCRIPT	no or yes: set to yes for PostScript printing (no)
+  # FEATURES	TINY, SMALL, NORMAL, BIG or HUGE (BIG)
+--- 47,54 ----
+  #               (i386)
+  # USEDLL	no or yes: set to yes to use the Runtime library DLL (no)
+  #		For USEDLL=yes the cygwin1.dll is required to run Vim.
+! #		For "no" the mingw-gcc-g++ package or the mingw64-i686-gcc-g++
+! #		package is required to complie Vim.  Or set CC to gcc-3 and add
+  #		-L/lib/w32api to EXTRA_LIBS.
+  # POSTSCRIPT	no or yes: set to yes for PostScript printing (no)
+  # FEATURES	TINY, SMALL, NORMAL, BIG or HUGE (BIG)
+***************
+*** 114,122 ****
+  INCLUDES = -march=$(ARCH) -Iproto
+  
+  #>>>>> name of the compiler and linker, name of lib directory
+! CROSS_COMPILE =
+  CC = gcc
+  RC = windres
+  
+  ##############################
+  # DYNAMIC_PERL=yes and no both work
+--- 114,130 ----
+  INCLUDES = -march=$(ARCH) -Iproto
+  
+  #>>>>> name of the compiler and linker, name of lib directory
+! ifeq (yes, $(USEDLL))
+! # CROSS_COMPILE is used for the gvimext DLL.
+! CROSS_COMPILE = i686-pc-mingw32-
+  CC = gcc
+  RC = windres
++ else
++ # i686-pc-mingw32-gcc, i686-w64-mingw32-gcc or gcc-3 can be used.
++ CROSS_COMPILE = i686-pc-mingw32-
++ CC = $(CROSS_COMPILE)gcc
++ RC = $(CROSS_COMPILE)windres
++ endif
+  
+  ##############################
+  # DYNAMIC_PERL=yes and no both work
+***************
+*** 193,223 ****
+  ##############################
+  ifdef RUBY
+  
+  ifndef RUBY_VER
+! RUBY_VER=16
+  endif
+- 
+  ifndef RUBY_VER_LONG
+! RUBY_VER_LONG=1.6
+  endif
+! 
+! ifndef DYNAMIC_RUBY
+! DYNAMIC_RUBY = yes
+  endif
+  
+- ifeq ($(RUBY_VER), 16)
+  ifndef RUBY_PLATFORM
+  RUBY_PLATFORM = i586-mswin32
+- endif
+- ifndef RUBY_INSTALL_NAME
+- RUBY_INSTALL_NAME = mswin32-ruby$(RUBY_VER)
+- endif
+  else
+! ifndef RUBY_PLATFORM
+  RUBY_PLATFORM = i386-mswin32
+  endif
+  ifndef RUBY_INSTALL_NAME
+! RUBY_INSTALL_NAME = msvcrt-ruby$(RUBY_VER)
+  endif
+  endif
+  
+--- 201,237 ----
+  ##############################
+  ifdef RUBY
+  
++ ifndef DYNAMIC_RUBY
++ DYNAMIC_RUBY=yes
++ endif
++ #  Set default value
+  ifndef RUBY_VER
+! RUBY_VER = 16
+  endif
+  ifndef RUBY_VER_LONG
+! RUBY_VER_LONG = 1.6
+  endif
+! ifndef RUBY_API_VER
+! RUBY_API_VER = $(subst .,,$(RUBY_VER_LONG))
+  endif
+  
+  ifndef RUBY_PLATFORM
++ ifeq ($(RUBY_VER), 16)
+  RUBY_PLATFORM = i586-mswin32
+  else
+! ifneq ($(wildcard $(RUBY)/lib/ruby/$(RUBY_VER_LONG)/i386-mingw32),)
+! RUBY_PLATFORM = i386-mingw32
+! else
+  RUBY_PLATFORM = i386-mswin32
+  endif
++ endif
++ endif
++ 
+  ifndef RUBY_INSTALL_NAME
+! ifeq ($(RUBY_VER), 16)
+! RUBY_INSTALL_NAME = mswin32-ruby$(RUBY_API_VER)
+! else
+! RUBY_INSTALL_NAME = msvcrt-ruby$(RUBY_API_VER)
+  endif
+  endif
+  
+***************
+*** 226,231 ****
+--- 240,249 ----
+  endif
+  
+  DEFINES += -DFEAT_RUBY
++ ifneq ($(findstring w64-mingw32,$(CC)),)
++ # A workaround for mingw-w64
++ DEFINES += -DHAVE_STRUCT_TIMESPEC -DHAVE_STRUCT_TIMEZONE
++ endif
+  INCLUDES += -I$(RUBY)/lib/ruby/$(RUBY_VER_LONG)/$(RUBY_PLATFORM)
+  ifdef RUBY_19_OR_LATER
+  INCLUDES += -I$(RUBY)/include/ruby-$(RUBY_VER_LONG) -I$(RUBY)/include/ruby-$(RUBY_VER_LONG)/$(RUBY_PLATFORM)
+*** ../vim-7.3.814/src/version.c	2013-02-13 16:49:54.000000000 +0100
+--- src/version.c	2013-02-13 17:03:36.000000000 +0100
+***************
+*** 727,728 ****
+--- 727,730 ----
+  {   /* Add new patch number below this line */
++ /**/
++     815,
+  /**/
+
+-- 
+ARTHUR: If you do not open these doors, we will take this castle by force ...
+   [A bucket of slops land on ARTHUR.  He tries to retain his dignity.]
+                 "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    ///