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source shared.vim
func TablineWithCaughtError()
let s:func_in_tabline_called = 1
try
call eval('unknown expression')
catch
endtry
return ''
endfunc
func TablineWithError()
let s:func_in_tabline_called = 1
call eval('unknown expression')
return ''
endfunc
func Test_caught_error_in_tabline()
let showtabline_save = &showtabline
set showtabline=2
let s:func_in_tabline_called = 0
let tabline = '%{TablineWithCaughtError()}'
let &tabline = tabline
redraw!
call assert_true(s:func_in_tabline_called)
call assert_equal(tabline, &tabline)
set tabline=
let &showtabline = showtabline_save
endfunc
func Test_tabline_will_be_disabled_with_error()
let showtabline_save = &showtabline
set showtabline=2
let s:func_in_tabline_called = 0
let tabline = '%{TablineWithError()}'
try
let &tabline = tabline
redraw!
catch
endtry
call assert_true(s:func_in_tabline_called)
call assert_equal('', &tabline)
set tabline=
let &showtabline = showtabline_save
endfunc
func Test_redrawtabline()
if has('gui')
set guioptions-=e
endif
let showtabline_save = &showtabline
set showtabline=2
set tabline=%{bufnr('$')}
edit Xtabline1
edit Xtabline2
redraw
call assert_match(bufnr('$') . '', Screenline(1))
au BufAdd * redrawtabline
badd Xtabline3
call assert_match(bufnr('$') . '', Screenline(1))
set tabline=
let &showtabline = showtabline_save
au! Bufadd
endfunc
function EmptyTabname()
return ""
endfunction
function MakeTabLine() abort
let titles = map(range(1, tabpagenr('$')), '"%( %" . v:val . "T%{EmptyTabname()}%T %)"')
let sep = 'あ'
let tabpages = join(titles, sep)
return tabpages .. sep .. '%=%999X X'
endfunction
func Test_tabline_empty_group()
" this was reading invalid memory
set tabline=%!MakeTabLine()
tabnew
redraw!
tabclose
set tabline=
endfunc
" vim: shiftwidth=2 sts=2 expandtab
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