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I have two files open, each one is in a split.
From file one, how can I get the filename of the file in split two ?
In command mode, I can get the reference of the filename I'm currently editing by using %f, is there something similar that would return the filename of the file opened in my second split?
Update : Following Christian Brabandt's advice, I ended up doing this, from the first window :
:echo bufname(2)
To get the buffer name in a different window, you will have to use a Vimscript solution.
You can refer to different splits using the window number or the winid. The window number is not stable and will change, if you modify the window layout, therefore the winid exists, which will never change (but was not available in older Vim versions). The window number starts with 1 from the top left window and is incremented for each window going from top left to bottom right.
Back to your question, in a Vim window with 2 split windows, you can use echo bufname(winbufnr(1)) to get the buffer name of the first split window and subsequently use echo bufname(winbufnr(2)) for the second window.
Making use of winids is left as an excercise to the reader ;)
winnr() takes numbers as an argument, echo bufname(winnr(1)) returns E15: Invalid expression: 1. But simply doing echo bufname(2) from the first window did the trick ! Thanks.
focus the split <C-w>h/j/k/l then hit <C-g>.
let @[a-z0-9]=expand(@%)for each split where@[a-z0-9]is something like@sfor split one and@wfor split 2. Then you can use the registers as required. Could possibly do a function to set the next variable in a list to the filename on BufEnter or the like