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Handle error on nvim_buf_get_extmarks #26

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Handle error on nvim_buf_get_extmarks #26

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35 changes: 18 additions & 17 deletions lua/hologram/init.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -44,27 +44,28 @@ end
local prev_ids = {}

function hologram.buf_render_images(buf, top, bot)
local exts = vim.api.nvim_buf_get_extmarks(buf,
vim.g.hologram_extmark_ns,
{math.max(top-1, 0), 0},
{bot-2, -1},
{})

local curr_ids = {}
for _, ext in ipairs(exts) do
local id, row, col = unpack(ext)
Image.instances[id]:display(row+1, 0, buf, {})
curr_ids[#curr_ids+1] = id
end
local ok, exts = pcall(vim.api.nvim_buf_get_extmarks, buf,
vim.g.hologram_extmark_ns,
{math.max(top-1, 0), 0},
{bot-2, -1},
{})
if ok then
local curr_ids = {}
for _, ext in ipairs(exts) do
local id, row, col = unpack(ext)
Image.instances[id]:display(row+1, 0, buf, {})
curr_ids[#curr_ids+1] = id
end

if prev_ids[buf] ~= nil then
for _, id in ipairs(prev_ids[buf]) do
if not vim.tbl_contains(curr_ids, id) then
Image.instances[id]:delete(buf, {})
if prev_ids[buf] ~= nil then
for _, id in ipairs(prev_ids[buf]) do
if not vim.tbl_contains(curr_ids, id) then
Image.instances[id]:delete(buf, {})
end
end
end
prev_ids[buf] = curr_ids
end
prev_ids[buf] = curr_ids
end

function hologram.buf_generate_images(buf, top, bot)
Expand Down