2 * (C) Copyright 2008 Jeremy Maitin-Shepard
4 * Use, modification, and distribution are subject to the terms specified in the
8 define_variable("editor_shell_command", getenv("VISUAL") || getenv("EDITOR") || "emacs",
9 "Shell command used to invoke an external editor.\n" +
10 "This defaults to the value of the EDITOR environment variable. If " +
11 "`run_external_editor_function' is non-null, it is used instead to " +
12 "invoke an external editor and the value of this variable is ignored." +
13 "It is used as part of a shell command in the following two ways:\n" +
14 "<editor_shell_command> <file>\n" +
15 "<editor_shell_command> +<line> <file>");
18 define_variable("run_external_editor_function", null,
19 "Coroutine function called to invoke an external editor.\n" +
20 "If this variable is set to a function, it is used to invoke an external editor in place of `editor_shell_command'. It is called with the filename as the first argument, and optionally the boolean keyword argument $temporary specifying whether the file should be deleted after the editor is closed, and optionally the keyword argument $line specifying a line number to display. The `create_external_editor_launcher' function may be convenient for generating a function suitable for use as the value of this variable.");
22 define_keyword("$temporary", "$line");
23 function open_file_with_external_editor(file) {
26 if (run_external_editor_function) {
27 yield run_external_editor_function(file, forward_keywords(arguments));
31 var line = arguments.$line;
33 var cmd = editor_shell_command + " ";
35 cmd += "+" + line + " ";
36 cmd += "\"" + shell_quote(file.path) + "\"";
39 yield shell_command(cmd);
41 if (arguments.$temporary) {
43 file.remove(false /* not recursive */);
49 function create_external_editor_launcher(program, args) {
50 return function (file) {
52 var arr = [null].concat(args.slice());
53 if (arguments.$line != null)
54 arr.push("+" + arguments.$line);
57 yield spawn_and_wait_for_process(program, arr);
59 if (arguments.$temporary) {
68 function open_with_external_editor(lspec) {
70 let [file, temp] = yield download_as_temporary(lspec);
71 yield open_file_with_external_editor(file, $line = arguments.$line, $temporary = temp);