tmux tabs with name of file open in vim

Question

I\'m new to tmux and am trying to figure out how to edit the configuration so that windows with vim open show up in the taskbar not as #:vim but as whatever the

Answer 1

As an alternative to other answers which set the tmux window name, you can have vim set the tmux pane title instead. This lets you keep a static window name that you define with tmux new-window -n while having vim change the pane title. You can use #T in set-titles-string to display the pane title, e.g. set-option -g set-titles-string "#W: #T" will display tmux window name and pane title.

Example vim configuration to change pane title:

" Teach vim the tmux escape sequences for changing pane title
" Note the "^[" should be a literal escape code (use `^v` to enter it)
set t_ts=^[]2;
set t_fs=^[\\

" Turn on setting the title.
set title

" The following causes vim to refresh the title each time we change buffers.
" Otherwise it will only set the title once at startup.
augroup RefreshTitle
  autocmd!
  " The concatenation of the colon is a hack to prevent vim from
  " interpreting the string as a modeline.
  autocmd BufEnter * let &titlestring = "vim" . ":" . expand("%:t")
augroup END

Kudos to vim.wikia.com for the t_ts and t_fs guidance and phluks for the autocommand.