This script sets up several text file associations for gvim on Microsoft Windows. Should work on Windows Vista and up, tested with Windows 10.

How to install

1. Copy the files associate-gvim-text-files.bat and gvim.ico to the directory where gvim.exe is in.
2. Run associate-gvim-text-files.bat; for an unattended install, use the /s switch.

How to uninstall

To remove all traces of associate-gvim-text-files.bat from your computer, run dissociate-gvim-text-files.bat; for an unattended uninstall, use the /s switch.

Credits

An adaption of @rossy's mpv-install from mpv to gvim, of which all licenses apply and to whom all credit shall be due.