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-rw-r--r--src/nvim/buffer.c8
-rw-r--r--src/nvim/testdir/test_tabline.vim25
2 files changed, 32 insertions, 1 deletions
diff --git a/src/nvim/buffer.c b/src/nvim/buffer.c
index 86067aceac..b3bbdce9d9 100644
--- a/src/nvim/buffer.c
+++ b/src/nvim/buffer.c
@@ -3646,13 +3646,19 @@ int build_stl_str_hl(
}
}
if (n == curitem && group_start_userhl == group_end_userhl) {
+ // empty group
out_p = t;
group_len = 0;
- // do not use the highlighting from the removed group
for (n = groupitems[groupdepth] + 1; n < curitem; n++) {
+ // do not use the highlighting from the removed group
if (items[n].type == Highlight) {
items[n].type = Empty;
}
+ // adjust the start position of TabPage to the next
+ // item position
+ if (items[n].type == TabPage) {
+ items[n].start = out_p;
+ }
}
}
}
diff --git a/src/nvim/testdir/test_tabline.vim b/src/nvim/testdir/test_tabline.vim
index f24552088b..117d962d08 100644
--- a/src/nvim/testdir/test_tabline.vim
+++ b/src/nvim/testdir/test_tabline.vim
@@ -64,3 +64,28 @@ func Test_redrawtabline()
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