I'm trying to adjust my
vimrc to be portable and also run under Gvim 8 on Windows 10. I use Vundle as my package manager and it works perfectly on my Ubuntu machine. However, on Windows, it won't load. I've traced the problem to this line:
After exploring the situation, I discovered that any path I give to
runtimepath turns into the empty string. I've tried every combination of path separator characters, I've tried absolute paths, relative paths, paths using environment variables, everything. I've tried to set it to various paths on my machine which are simple enough that there's no possibility of typos. Regardless of what I set,
rtp doesn't get changed.
After failing with the above, I started setting
= instead of
+=. When doing this, no matter what I set,
echo &rtp is empty.
What do I need to do to convince vim to really set the runtime path?