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perf(extmarks): don't handle inline virt_text if there is none (#24322)

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Extreme testcase:
```lua
vim.fn.setline(1, 'foobar')
local ns = vim.api.nvim_create_namespace('')
for _ = 1, 100000 do
  vim.api.nvim_buf_set_extmark(0, ns, 0, 3, {})
end
local start_time = vim.loop.hrtime()
vim.fn.virtcol('$')
local stop_time = vim.loop.hrtime()
print(stop_time - start_time)
```
Before #20130: 31696
On master branch: 26191344
After this PR: 37692
This commit is contained in:
zeertzjq
2023-07-12 10:38:53 +08:00
committed by GitHub
parent bf52fb7193
commit ef94fb69c6
2 changed files with 2 additions and 2 deletions
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2
src/nvim/plines.c
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@@ -329,7 +329,7 @@ void init_chartabsize_arg(chartabsize_T *cts, win_T *wp, linenr_T lnum, colnr_T
cts->cts_has_virt_text = false;
cts->cts_row = lnum - 1;
if (cts->cts_row >= 0) {
if (cts->cts_row >= 0 && wp->w_buffer->b_virt_text_inline > 0) {
marktree_itr_get(wp->w_buffer->b_marktree, cts->cts_row, 0, cts->cts_iter);
mtkey_t mark = marktree_itr_current(cts->cts_iter);
if (mark.pos.row == cts->cts_row) {