In Vim, the text that forms the row of tabs at the top of the screen (when using tabs) is configured with the tabline
option.
I'd like to make a few minor adjustments to the default tab pages line, such as replacing the number of windows in the tab with the index of the tab. Unfortunately, the default version of this (which is active when tabline
is unset) is complicated and undocumented. There's nothing for me to tweak.
Is there a piece of Vim script that provides the default implementation which I could adjust to my needs?
I use a custom function to reset the tab number and viewport numbers, from here (see Tonymec's comment). You can play with it to change how you display the tabs.
Here's what I have in my .vimrc
. It's only a slightly modified version, that changes how the tab# and viewport# are displayed.
"Rename tabs to show tab# and # of viewports
if exists("+showtabline")
function! MyTabLine()
let s = ''
let wn = ''
let t = tabpagenr()
let i = 1
while i <= tabpagenr('$')
let buflist = tabpagebuflist(i)
let winnr = tabpagewinnr(i)
let s .= '%' . i . 'T'
let s .= (i == t ? '%1*' : '%2*')
let s .= ' '
let wn = tabpagewinnr(i,'$')
let s .= (i== t ? '%#TabNumSel#' : '%#TabNum#')
let s .= i
if tabpagewinnr(i,'$') > 1
let s .= '.'
let s .= (i== t ? '%#TabWinNumSel#' : '%#TabWinNum#')
let s .= (tabpagewinnr(i,'$') > 1 ? wn : '')
end
let s .= ' %*'
let s .= (i == t ? '%#TabLineSel#' : '%#TabLine#')
let bufnr = buflist[winnr - 1]
let file = bufname(bufnr)
let buftype = getbufvar(bufnr, 'buftype')
if buftype == 'nofile'
if file =~ '\/.'
let file = substitute(file, '.*\/\ze.', '', '')
endif
else
let file = fnamemodify(file, ':p:t')
endif
if file == ''
let file = '[No Name]'
endif
let s .= file
let s .= (i == t ? '%m' : '')
let i = i + 1
endwhile
let s .= '%T%#TabLineFill#%='
return s
endfunction
set stal=2
set tabline=%!MyTabLine()
endif
And here are the colors that are defined in my function
set tabpagemax=15
hi TabLineSel term=bold cterm=bold ctermfg=16 ctermbg=229
hi TabWinNumSel term=bold cterm=bold ctermfg=90 ctermbg=229
hi TabNumSel term=bold cterm=bold ctermfg=16 ctermbg=229
hi TabLine term=underline ctermfg=16 ctermbg=145
hi TabWinNum term=bold cterm=bold ctermfg=90 ctermbg=145
hi TabNum term=bold cterm=bold ctermfg=16 ctermbg=145
This is not the answer you are asking for but I will share my own tabline with you.
Did it with help from the wikia page, here is my version.
This is where the first tab has three windows open in it, with two open on one edited file.
(sorry about the 8-space tabs)
set showtabline=1 " 1 to show tabline only when more than one tab is present
set tabline=%!MyTabLine() " custom tab pages line
function! MyTabLine() " acclamation to avoid conflict
let s = '' " complete tabline goes here
" loop through each tab page
for t in range(tabpagenr('$'))
" set highlight
if t + 1 == tabpagenr()
let s .= '%#TabLineSel#'
else
let s .= '%#TabLine#'
endif
" set the tab page number (for mouse clicks)
let s .= '%' . (t + 1) . 'T'
let s .= ' '
" set page number string
let s .= t + 1 . ' '
" get buffer names and statuses
let n = '' "temp string for buffer names while we loop and check buftype
let m = 0 " &modified counter
let bc = len(tabpagebuflist(t + 1)) "counter to avoid last ' '
" loop through each buffer in a tab
for b in tabpagebuflist(t + 1)
" buffer types: quickfix gets a [Q], help gets [H]{base fname}
" others get 1dir/2dir/3dir/fname shortened to 1/2/3/fname
if getbufvar( b, "&buftype" ) == 'help'
let n .= '[H]' . fnamemodify( bufname(b), ':t:s/.txt$//' )
elseif getbufvar( b, "&buftype" ) == 'quickfix'
let n .= '[Q]'
else
let n .= pathshorten(bufname(b))
endif
" check and ++ tab's &modified count
if getbufvar( b, "&modified" )
let m += 1
endif
" no final ' ' added...formatting looks better done later
if bc > 1
let n .= ' '
endif
let bc -= 1
endfor
" add modified label [n+] where n pages in tab are modified
if m > 0
let s .= '[' . m . '+]'
endif
" select the highlighting for the buffer names
" my default highlighting only underlines the active tab
" buffer names.
if t + 1 == tabpagenr()
let s .= '%#TabLineSel#'
else
let s .= '%#TabLine#'
endif
" add buffer names
if n == ''
let s.= '[New]'
else
let s .= n
endif
" switch to no underlining and add final space to buffer list
let s .= ' '
endfor
" after the last tab fill with TabLineFill and reset tab page nr
let s .= '%#TabLineFill#%T'
" right-align the label to close the current tab page
if tabpagenr('$') > 1
let s .= '%=%#TabLineFill#%999Xclose'
endif
return s
endfunction
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