refactor(git): convert blocking subprocess calls to async

lua/git/log_win.lua

@@ -1,3 +1,4 @@
+local git = require("git")
 local log = require("log")
 local repo = require("git.repo")
 local util = require("util")
@@ -13,32 +14,36 @@ function M.show()
         return
     end
 
-    local result = vim.system({
-        "git",
-        "log",
-        "--graph",
-        "--all",
-        "--decorate",
-        "--date=short",
-        "--format=format:" .. LOG_FORMAT,
-    }, { cwd = worktree, text = true }):wait()
-    if result.code ~= 0 then
-        log.error("git log failed: %s", result.stderr or "")
-        return
-    end
-
-    local lines = util.split_lines(result.stdout or "")
-
-    vim.cmd("new")
-    local buf = vim.api.nvim_get_current_buf()
-    vim.bo[buf].buftype = "nofile"
-    vim.bo[buf].bufhidden = "hide"
-    vim.bo[buf].swapfile = false
-    vim.api.nvim_buf_set_lines(buf, 0, -1, false, lines)
-    vim.bo[buf].modifiable = false
-    vim.bo[buf].modified = false
+    local buf = git.new_scratch()
     vim.b[buf].git_worktree = worktree
-    vim.bo[buf].filetype = "gitlog"
+
+    vim.system(
+        {
+            "git",
+            "log",
+            "--graph",
+            "--all",
+            "--decorate",
+            "--date=short",
+            "--format=format:" .. LOG_FORMAT,
+        },
+        { cwd = worktree, text = true },
+        vim.schedule_wrap(function(result)
+            if not vim.api.nvim_buf_is_valid(buf) then
+                return
+            end
+            if result.code ~= 0 then
+                log.error("git log failed: %s", vim.trim(result.stderr or ""))
+                return
+            end
+            local lines = util.split_lines(result.stdout or "")
+            vim.bo[buf].modifiable = true
+            vim.api.nvim_buf_set_lines(buf, 0, -1, false, lines)
+            vim.bo[buf].modifiable = false
+            vim.bo[buf].modified = false
+            vim.bo[buf].filetype = "gitlog"
+        end)
+    )
 end
 
 return M