help: enable auto-wrapping of help output

Previously, without the 'wrap_help' feature enabled, Clap would not do
any auto-wrapping of help text. For help text with long lines, this
tends to lead to non-ideal formatting. It can be especially difficult to
read when the width of the terminal is smaller.

This commit enables 'wrap_help', which will automatically cause Clap to
query the terminal size and wrap according to that. Or, if the terminal
size cannot be determined, it will default to a maximum line width of
100.

Ref #9599 (comment)

crates/ruff/Cargo.toml

@@ -30,7 +30,7 @@ bincode = { workspace = true }
 bitflags = { workspace = true }
 cachedir = { workspace = true }
 chrono = { workspace = true }
-clap = { workspace = true, features = ["derive", "env"] }
+clap = { workspace = true, features = ["derive", "env", "wrap_help"] }
 clap_complete_command = { workspace = true }
 clearscreen = { workspace = true }
 colored = { workspace = true }

crates/ruff_dev/Cargo.toml

@@ -25,7 +25,7 @@ ruff_python_trivia = { path = "../ruff_python_trivia" }
 ruff_workspace = { path = "../ruff_workspace", features = ["schemars"]}
 
 anyhow = { workspace = true }
-clap = { workspace = true }
+clap = { workspace = true, features = ["wrap_help"] }
 ignore = { workspace = true }
 imara-diff = { workspace = true }
 indicatif = { workspace = true }

crates/ruff_dev/src/generate_cli_help.rs

@@ -114,12 +114,15 @@ pub(super) fn main(args: &Args) -> Result<()> {
 
 /// Returns the output of `ruff help`.
 fn help_text() -> String {
-    args::Args::command().render_help().to_string()
+    args::Args::command()
+        .term_width(79)
+        .render_help()
+        .to_string()
 }
 
 /// Returns the output of a given subcommand (e.g., `ruff help check`).
 fn subcommand_help_text(subcommand: &str) -> Result<String> {
-    let mut cmd = args::Args::command();
+    let mut cmd = args::Args::command().term_width(79);
 
     // The build call is necessary for the help output to contain `Usage: ruff
     // check` instead of `Usage: check` see https://github.com/clap-rs/clap/issues/4685