ctrlspace: wrong separator
ctrlspace: wrong separator

under certains circumstances it could happen that for the vim-ctrlspace
tabline extension a tabline group was redefined which would cause a
separator having foreground and background color swapped. This was
caused by using the 'pos' parameter for the right side wrongly.

fixes #1559

chrisbra/vim-airline,tschundler/dotfiles,tschundler/dotfiles,tschundler/dotfiles,bling/vim-airline,unphased/vim-airline,yzhou61/vim-airline,rchicoli/vim-airline