--- a/notes.txt	Fri Jul 24 14:48:46 2015 +0100
+++ b/notes.txt	Tue Dec 08 09:05:19 2015 +0000
@@ -308,3 +308,22 @@
  src/specifier.c
  src/toolbar-msw.c
  src/win32.c
+---
+default branch, abandoned cygwin64 as system-type
+Trying to compile with vs2015:
+
+  > patch -p 1 < ../xemacs-21.5-upstream/vs2015_3.patch
+  patching file nt/xemacs.mak
+  Hunk #4 FAILED at 796.
+  1 out of 19 hunks FAILED -- saving rejects to file nt/xemacs.mak.rej
+  patching file src/intl-auto-encap-win32.c
+  Hunk #1 FAILED at 36.
+  Hunk #2 succeeded at 3147 with fuzz 2 (offset -199 lines).
+  Hunk #3 succeeded at 3156 with fuzz 2 (offset -199 lines).
+  1 out of 3 hunks FAILED -- saving rejects to file src/intl-auto-encap-win32.c.rej
+  patching file src/s/windowsnt.h
+  patching file src/sysproc.h
+OK, did first (.mak) by hand, other was there, in a different place,
+already.
+Compilation produces _lots_ of warnings about type/size conversions,
+slowly figuring out fixes, possible not all correct :-(