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" CustomTabLine
"
" A custom tabline that displays tab numbers for easier navigation between tabs.
"
" CHANGELOG:
" 2014.06.30:
" * Initial version. Very basic. Based on the sample tabline
" implementation in vim help. Shows the tab number, filename without
" path, modification flag, and separator.
"
" TODO:
" 2014.06.30:
" - Truncate filenames when the number of characters in the tabline exceeds the
" width of the window.
" - Improve separator such that it appears between tabs instead of latched onto
" the preceeding tab.
"
function! CustomTabLine()
let s = ''
for i in range(tabpagenr('$'))
" select the highlighting
if i + 1 == tabpagenr()
let s .= '%#TabLineSel#'
else
let s .= '%#TabLine#'
endif
" set the tab page number (for mouse clicks)
let s .= '%' . (i + 1) . 'T'
" the label is made by CustomTabLabel()
let s .= ' %{CustomTabLabel(' . (i + 1) . ')}'
endfor
" after the last tab fill with TabLineFill and reset tab page nr
let s .= '%#TabLineFill#%T'
" right-align the label to close the current tab page
if tabpagenr('$') > 1
let s .= '%=%#TabLine#%999XX'
endif
return s
endfunction
function! CustomTabLabel(n)
let buflist = tabpagebuflist(a:n)
let winnr = tabpagewinnr(a:n)
let label = ''
let tab_number = a:n . ': '
let filename = fnamemodify(bufname(buflist[winnr - 1]), ':p:t')
if filename == ''
let filename = '[No Name]'
endif
let label .= tab_number . filename . ' '
if getbufvar(buflist[winnr - 1], "&mod")
let label .= '[+] '
endif
let label .= '|'
return label
endfunction
set tabline=%!CustomTabLine()
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