Question

Check the following screenshot:

I checked all my plugins/bundles, I use Vundle not Pathogen. Here’s my list of bundles:

" This one is required baby!
Bundle 'gmarik/vundle'

" All of my Vundle bundles
Bundle 'scrooloose/nerdcommenter'
Bundle 'scrooloose/nerdtree'
Bundle 'mattn/zencoding-vim'
Bundle 'tpope/vim-fugitive'
Bundle 'tpope/vim-markdown'
Bundle 'tpope/vim-repeat'
Bundle 'tpope/vim-surround'
Bundle 'spf13/PIV'
Bundle 'vim-scripts/YankRing.vim'
Bundle 'jeffkreeftmeijer/vim-numbertoggle'
Bundle 'PotHix/Vimpress'
" Color schemes
Bundle 'altercation/vim-colors-solarized'

I just yanked my vimrc file in case you didn’t notice. I am not aware that any of these change the buffer behavior, but I might be mistaken.

How can I remove this tab-like functionality? To reproduce it, simply open a file, and then grab other files, and drag them on top of the Vim window (not icon, window).

Answer 1

Edit Found a much more effective setting:

set tabpagemax=1 showtabline=0

inside your $MYVIMRC

Docs:

                        *'showtabline'* *'stal'*
'showtabline' 'stal'    number  (default 1)
            global
            {not in Vi}
            {not available when compiled without the |+windows|
            feature}
    The value of this option specifies when the line with tab page labels
    will be displayed:
        0: never
        1: only if there are at least two tab pages
        2: always
    This is both for the GUI and non-GUI implementation of the tab pages
    line.

And

                        *'tabpagemax'* *'tpm'*
'tabpagemax' 'tpm'  number  (default 10)
            global
            {not in Vi}
            {not available when compiled without the |+windows|
            feature}
    Maximum number of tab pages to be opened by the |-p| command line
    argument or the ":tab all" command. |tabpage|