I don't know what causes it, but in Windows i use GVim (portable GVim), and need to open some file (that already exist, Vim didn't created it), but it opens it in readonly mode. i need to use w! to write it. I have proper permissions on windows directory, but, this seems like some flag in Vim as it says:
E45: 'readonly' option is set (add ! to override)
i don't want to type w! to save, because Vim is supposed to be portable (run from USB in windows), so it needs to work with foreign files it didn't created. When i create file in Vim, it doesn't complain.
How this work under Windows?
And i already have these flags, but not working:
set noro set noreadonly set write