// 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 std::io::Write; use tracing::instrument; use crate::cli_util::{CommandHelper, RevisionArg};use crate::command_error::CommandError;use crate::ui::Ui; /// List files in a revision#[derive(clap::Args, Clone, Debug)]pub(crate) struct FilesArgs {    /// The revision to list files in    #[arg(long, short, default_value = "@")]    revision: RevisionArg,    /// Only list files matching these prefixes (instead of all files)    #[arg(value_hint = clap::ValueHint::AnyPath)]    paths: Vec<String>,} #[instrument(skip_all)]pub(crate) fn cmd_files(    ui: &mut Ui,    command: &CommandHelper,    args: &FilesArgs,) -> Result<(), CommandError> {    let workspace_command = command.workspace_helper(ui)?;    let commit = workspace_command.resolve_single_rev(&args.revision)?;    let tree = commit.tree()?;    let matcher = workspace_command.matcher_from_values(&args.paths)?;    ui.request_pager();    for (name, _value) in tree.entries_matching(matcher.as_ref()) {        writeln!(            ui.stdout(),            "{}",            &workspace_command.format_file_path(&name)        )?;    }    Ok(())}