I have reverted back to first version problem appeared v8.1.0366. Tested and error "E959: Invalid diff format" appears as expected.
I have set Windows' system Environment Variable CYGWIN and set it to value nodosfilewarning and rebooted Windows to make sure this variable is really set. Testing... cd \cygwin\bin diff -a --binary C:\Users\igor\AppData\Local\Temp\file1.txt C:\Users\igor\AppData\Local\Temp\file2.txt >c:\aaa\difftest_cygwin.log 2>&1 And now Cygwin diff output is exactly the same as vim diff output: 1c1 < aaa --- > bbb with no Cygwin Windows like path warning anymore at the top of output. Repeated the tests using: gvim -u NONE and the rest of the commands from my first post and there is NO PROBLEM!!! Just a note: In Cygwin documentation it is stated it is "strongly deprecated" to use Windows paths, because Unix like programs may have unexpected problems. I am writing a lot of Cygwin scripts and I want to get a Cygwin warning when Windows path is used instead of POSIX. -- -- You received this message from the "vim_dev" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
