[picker.git_log_file] Open the current file on the specific commit in different buffer

[kaiphat]

I used it in fzf-lua.

Example

Screen.Recording.2025-01-24.at.11.27.12.mov

Lua code:

Snacks.picker.git_log_file {
	confirm = function(picker, item)
		local file = vim.fn.system(string.format(
                -- i use nushell here, but you can do something similar with any shell
			'nu -c "%s"',
			string.format(
				[[
                                    cd %s; 
                                    let file = ('%s' | path basename); 
                                    let new_file = $'/tmp/commit_file_%s_($file)';
                                    git show $'%s:./($file)' | save -f $new_file;
                                    $new_file
                                ]],
				item.cwd,
				item.file,
				item.commit,
				item.commit
			)
		))
		picker:close()
		vim.cmd 'vs'
		vim.schedule(function()
			vim.cmd('e ' .. file)
		end)
	end,
}

[maskudo]

Assuming you have gitsigns installed, I have:

local gitActions = {
	actions = {
		["open_file"] = function(picker)
			local currentCommit = picker:current().commit
			picker:close()
			vim.cmd("Gitsigns show " .. currentCommit)
		end,
		["diffview"] = function(picker)
			local currentCommit = picker:current().commit
			picker:close()
			vim.cmd("DiffviewOpen HEAD " .. currentCommit)
		end,
	},
	win = {
		input = {
			keys = {
				["<CR>"] = {
					"open_file",
					desc = "Open File",
					mode = { "n", "i" },
				},
				["<c-d>"] = {
					"diffview",
					desc = "Diffview",
					mode = { "n", "i" },
				},
			},
		},
	},
}

And

picker = {
	sources = {
		git_log_file = gitActions,
		git_log = gitActions,
	}
	
}

Hitting Enter will open the file in a new buffer/window and in a diffview window

[kaiphat]

I tried, it works:)
But i have small freeze while GitSigns is opening file. And i like custom solutions:)