I'm using macvim with the janus plugin that includes nerdtree with it.
The issue that I am having is that whenever I open a file using 'o' from the nerdtree file browser, for some reason it resets the textwidth to 79 in the new buffer that the file is opened into.
I can override this back to 0 in the new buffer and vim will behave correctly, but whenever I switch files, the textwidth gets set back to 79.
I have textwidth set to 0 in my .vimrc file and this is correctly picked up by other files opened in vim, the file browser tab in nerdtree and even the initial empty buffer that is opened when I do 'mvim dir'. It's just when I use 'o' to open a file that this vim variable gets reset.
Does anyone know how to address this? I'm seeing the same behavior in gvim with the janus plugin as well.
Could it be that you're opening Python files?
Janus forces PEP8 on ft=python https://github.com/carlhuda/janus/blob/f09d7d383282074ea5477ce7f4f4e2141887a4a7/janus/vim/core/before/plugin/filetypes.vim#L38
Janus should be using setlocal instead of set