cli: util: don't use formatter to print raw data

I don't think escape sequences in those contents should be escaped depending
on the output device.

cli/src/commands/util/completion.rs

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use std::io::Write as _;
+
 use clap::Command;
 
 use crate::cli_util::CommandHelper;
@@ -96,7 +98,7 @@ pub fn cmd_util_completion(
     };
 
     let buf = shell.generate(&mut app);
-    ui.stdout_formatter().write_all(&buf)?;
+    ui.stdout().write_all(&buf)?;
     Ok(())
 }
 

cli/src/commands/util/config_schema.rs

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use std::io::Write as _;
+
 use crate::cli_util::CommandHelper;
 use crate::command_error::CommandError;
 use crate::ui::Ui;
@@ -27,6 +29,6 @@ pub fn cmd_util_config_schema(
 ) -> Result<(), CommandError> {
     // TODO(#879): Consider generating entire schema dynamically vs. static file.
     let buf = include_bytes!("../../config-schema.json");
-    ui.stdout_formatter().write_all(buf)?;
+    ui.stdout().write_all(buf)?;
     Ok(())
 }

cli/src/commands/util/mangen.rs

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use std::io::Write as _;
+
 use crate::cli_util::CommandHelper;
 use crate::command_error::CommandError;
 use crate::ui::Ui;
@@ -28,6 +30,6 @@ pub fn cmd_util_mangen(
     let mut buf = vec![];
     let man = clap_mangen::Man::new(command.app().clone());
     man.render(&mut buf)?;
-    ui.stdout_formatter().write_all(&buf)?;
+    ui.stdout().write_all(&buf)?;
     Ok(())
 }

cli/src/commands/util/markdown_help.rs

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use std::io::Write as _;
+
 use crate::cli_util::CommandHelper;
 use crate::command_error::CommandError;
 use crate::ui::Ui;
@@ -28,6 +30,6 @@ pub fn cmd_util_markdown_help(
     // If we ever need more flexibility, the code of `clap_markdown` is simple and
     // readable. We could reimplement the parts we need without trouble.
     let markdown = clap_markdown::help_markdown_command(command.app()).into_bytes();
-    ui.stdout_formatter().write_all(&markdown)?;
+    ui.stdout().write_all(&markdown)?;
     Ok(())
 }