feat: adds the -e and -s flags to the edit command

tutor/commands/config.py

@@ -260,8 +260,20 @@ def patches_show(context: Context, name: str) -> None:
 
 
 @click.command(name="edit", help="Edit config.yml of the current environment")
+@click.option(
+    "-e",
+    "--editor",
+    default="",
+    help="Editor to open the config.yaml file.",
+)
+@click.option(
+    "-s",
+    "--save",
+    is_flag=True,
+    help="Update the tutor environment after editing. Equivalent to `tutor config save`.",
+)
 @click.pass_obj
-def edit(context: Context) -> None:
+def edit(context: Context, editor: str, save: bool) -> None:
     config_file = tutor_config.config_path(context.root)
 
     if not os.path.isfile(config_file):
@@ -270,24 +282,36 @@ def edit(context: Context) -> None:
         )
 
     open_cmd = None
-
-    if which("open"):  # MacOS & linux distributions that ship `open`. eg., Ubuntu
+    if editor:
+        open_cmd = [editor, config_file]
+    elif which("open"):  # MacOS & linux distributions that ship `open`. eg., Ubuntu
         open_cmd = ["open", config_file]
     elif which("xdg-open"):  # Linux
         open_cmd = ["xdg-open", config_file]
     elif which("start"):  # Windows
         # Calling "start" on a regular file opens it with the default editor.
         # The second argument "" just means "don't give the window a custom title".
         open_cmd = ["start", '""', config_file]
+
+    utils.execute(*open_cmd)
+
+    if save:
+        config = tutor_config.load_full(context.root)
+        env.save(context.root, config)
     else:
-        raise exceptions.TutorError(
-            f"Failed to find utility to launch an editor. Edit {config_file} with the editor of your choice."
+        click.echo(
+            click.style(
+                "Run 'tutor config save' to update the tutor environment with the latest config.",
+                fg="yellow",
+            )
+        )
+        click.echo(
+            click.style(
+                "💡 You can automatically update the environment after editing by setting the flag -s.\n"
+                "e.g., `tutor config edit -s`",
+                fg="blue",
+            )
         )
-
-    utils.execute(open_cmd)
-    click.echo(
-        "Remember to run 'tutor config save' after editing to apply the changes to your environment."
-    )
 
 
 config_command.add_command(save)