feat: vterm preview

[phanen]

No description provided.

[ibhagwan]

Can this also replace chafa/viu/ueberzugpp?

[phanen]

I tried but looks bad, builtin terminal don't seem support them well.

require("fzf-lua").fzf_exec("seq 100", {
	winopts = { preview = { winopts = { winbl = 0 } } },
	previewer = {
		_ctor = function()
			local p = require("fzf-lua.previewer.builtin").buffer_or_file:extend()
			function p:parse_entry(entry)
				return {
					cmd = {
						"sh",
						"-c",
						-- "fd . --color=always $VIMRUNTIME | head -30",
						-- "chafa $VIMRUNTIME/nvim.png",
						"viu $VIMRUNTIME/neovim.ico",
					},
				}
			end
			return p
		end,
	},
})

[phanen]

fd --color=always issue fixed in neovim/neovim#37791.

[ibhagwan]

fd --color=always issue fixed in neovim/neovim#37791.

Nice, so we can merge this soon with limit to nightly?

[phanen]

Nice, so we can merge this soon with limit to nightly?

Most of time it work well even not on nightly.
There're other possible issues...happened when we preview other instance's screenshots (when the instance open a terminal/fzf?).

Also have some flicker issue when change current preview entry.

[phanen]

Terminal buffer cannot scroll from fzf win, maybe related to neovim/neovim#4895 (comment). This hack can make it work.

vim.cmd([[hor below pedit tmp]])
local win = vim.fn.win_getid(vim.fn.winnr("j"))
local term_preview = function(cmd)
	local newbuf = api.nvim_create_buf(false, true)
	-- vim.api.nvim_buf_call(newbuf, function()
	-- 	vim.fn.jobstart(cmd, {
	-- 		term = true,
	-- 		on_exit = function()
	-- 			vim._with({ noautocmd = true }, function()
	-- 				api.nvim_win_set_buf(win, newbuf)
	-- 			end)
	-- 		end,
	-- 	})
	-- end)
	api.nvim_buf_call(newbuf, function()
		vim.cmd([[noau 0r! ]] .. cmd)
		-- api.nvim_create_autocmd("ChanOpen", {
		-- 	buffer = newbuf,
		-- 	once = true,
		-- 	callback = function() end,
		-- })
		api.nvim_open_term(newbuf, {})
		vim.schedule(function()
			api.nvim_win_set_buf(win, newbuf)
		end)
	end)
end
local new = function()
	term_preview("fd --color=always . " .. vim.env.VIMRUNTIME)
end
local scroll_down = function()
	local curwin = api.nvim_get_current_win()
	vim.api.nvim_set_current_win(win)
	vim.defer_fn(function()
		vim.api.nvim_feedkeys("�", "nt", false)
		vim.defer_fn(function()
			vim.api.nvim_set_current_win(curwin)
		end, 30)
	end, 30)
end
vim.keymap.set("n", "<c-j>", new)
vim.keymap.set("n", "<c-d>", scroll_down)

[ibhagwan]

You marked this ready, shall I merge?

[phanen]

Yeah, I think it's ready for merge.
Builtin term is not better than fzf builtin preview most of the time.

[ibhagwan]

Yeah, I think it's ready for merge. Builtin term is not better than fzf builtin preview most of the time.

So for now we keep it just as a backup previewer?

[phanen]

Yes. Can switch by: previewers.bat.vterm=true, FzfLua live_grep previewer=bat.

[ibhagwan]

Ty @phanen!