add gvim to right context
gvim.reg
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\*\shell\gVim]
@="Edit with Vim(&V)"
"icon"="\"E:\\gvim\\vim81\\gvim.exe\""
[HKEY_CLASSES_ROOT\*\shell\gVim\command]
@="\"E:\\gvim\\vim81\\gvim.exe\" \"%1\""