windows - Associate a file type with emacs/cygwin -

i want use emacs , editor , shell. on windows 7 installed cygwin , x11 , emacs. in terminal added /etc/profile file these lines:

xwin -multiwindow 2> /dev/null& export display=:0.0 sleep 1 emacs 2> /dev/null& 

i created shortcut execute command: c:\rhcygwin64\bin\mintty.exe - every time start shortcut starts emacs. no problem. goal is: associate file types .txt , .csv , etc emacs in order when start foo.txt it'll open in emacs. when tried 'set associtation' control accepts file name , not take '-'. hence when try open foo.txt not work. tried create shortcut mintty.exe didn't work either. me create association in order start mintty.exe rather mintty.exe - ? in advance

i taking question off . realized problem related subshell issue ... when try invoke first cygwin, emacs under , etc. decided not use windows explorer rather go directly file , open it. way don't need file association. please close ticket. thanks