// Copyright 2020 The Jujutsu Authors//// Licensed under the Apache License, Version 2.0 (the "License");// you may not use this file except in compliance with the License.// You may obtain a copy of the License at//// https://www.apache.org/licenses/LICENSE-2.0//// Unless required by applicable law or agreed to in writing, software// distributed under the License is distributed on an "AS IS" BASIS,// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.// See the License for the specific language governing permissions and// limitations under the License. use jj_lib::config::ConfigLayer;use tracing::instrument; use super::ConfigLevelArgs;use crate::cli_util::CommandHelper;use crate::command_error::CommandError;use crate::command_error::print_error_sources;use crate::ui::Ui; /// Start an editor on a jj config file.////// Creates the file if it doesn't already exist regardless of what the editor/// does.#[derive(clap::Args, Clone, Debug)]pub struct ConfigEditArgs {    #[command(flatten)]    pub level: ConfigLevelArgs,} #[instrument(skip_all)]pub fn cmd_config_edit(    ui: &mut Ui,    command: &CommandHelper,    args: &ConfigEditArgs,) -> Result<(), CommandError> {    let editor = command.text_editor()?;    let file = args.level.edit_config_file(ui, command)?;    if !file.path().exists() {        file.save()?;    }     // Editing again and again until either of these conditions is met    // 1. The config is OK    // 2. The user restores previous one    writeln!(ui.status(), "Editing file: {}", file.path().display())?;    loop {        editor.edit_file(file.path())?;         // Trying to load back config. If error, prompt to continue editing        if let Err(e) = ConfigLayer::load_from_file(file.layer().source, file.path().to_path_buf())        {            writeln!(                ui.warning_default(),                "An error has been found inside the config:"            )?;            print_error_sources(ui, Some(&e))?;            let continue_editing = ui.prompt_yes_no(                "Do you want to keep editing the file? If not, previous config will be restored.",                Some(true),            )?;            if !continue_editing {                // Saving back previous config                file.save()?;                break;            }        } else {            // config is OK            break;        }    }    Ok(())}