--help output use line wrap

[heisen-li]

What does this PR try to resolve?

Enable the wrap_help feature to help the output of --help wrap, making it easier to read.

Fixes #11895

[rustbot]

r? @weihanglo

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[heisen-li]

Sorry, I reopened a PR.

[weihanglo]

Thanks!

It would be interesting if we could track --help output. cc #11912

[weihanglo]

BTW, the list of subcommand from cargo --help output is not wrapped. It is hard-coded here. We might want a way to fix that as well.

cargo/src/bin/cargo/cli.rs

Lines 459 to 477 in 7fb89f0

	Some common cargo commands are (see all commands with --list):
	build, b Compile the current package
	check, c Analyze the current package and report errors, but don't build object files
	clean Remove the target directory
	doc, d Build this package's and its dependencies' documentation
	new Create a new cargo package
	init Create a new cargo package in an existing directory
	add Add dependencies to a manifest file
	remove Remove dependencies from a manifest file
	run, r Run a binary or example of the local package
	test, t Run the tests
	bench Run the benchmarks
	update Update dependencies listed in Cargo.lock
	search Search registry for crates
	publish Package and upload this package to the registry
	install Install a Rust binary. Default location is $HOME/.cargo/bin
	uninstall Uninstall a Rust binary
	See 'cargo help <command>' for more information on a specific command.\n",

[weihanglo]

@bors r+

[bors]

📌 Commit 9ba0d44 has been approved by weihanglo

It is now in the queue for this repository.

[bors]

⌛ Testing commit 9ba0d44 with merge c3e3d90...

[bors]

☀️ Test successful - checks-actions
Approved by: weihanglo
Pushing c3e3d90 to master...

[bors]

☀️ Test successful - checks-actions
Approved by: weihanglo
Pushing c3e3d90 to master...

[bors]

👀 Test was successful, but fast-forwarding failed: 422 Changes must be made through a pull request.