Set Document path and category based on file path.

src/compare/parse.rs

@@ -76,11 +76,17 @@ where
         r#"(progn
      (require 'org)
      (defun org-table-align () t)
+     (setq vc-handled-backends nil)
      {global_settings}
+     (find-file-read-only "{file_path}")
      (org-mode)
      (message "%s" (pp-to-string (org-element-parse-buffer)))
 )"#,
-        global_settings = global_settings_elisp(global_settings)
+        global_settings = global_settings_elisp(global_settings),
+        file_path = file_path
+            .as_os_str()
+            .to_str()
+            .expect("File name should be valid utf-8.")
     );
     let mut cmd = Command::new("emacs");
     let cmd = cmd
@@ -89,8 +95,6 @@ where
         .arg("--no-site-file")
         .arg("--no-splash")
         .arg("--batch")
-        .arg("--insert")
-        .arg(file_path.as_os_str())
         .arg("--eval")
         .arg(elisp_script);
     let out = cmd.output()?;