From 0c8d48ad430c48c21d53806206257fc38d6e1eae Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Thu, 12 May 2022 00:04:50 -0700
Subject: [PATCH] Add subcommand metadata so `cargo --list` can print a
 description

---
 Cargo.lock  | 7 +++++++
 Cargo.toml  | 1 +
 src/main.rs | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index cdbaae6..3efd799 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -30,11 +30,18 @@ name = "cargo-llvm-lines"
 version = "0.4.14"
 dependencies = [
  "atty",
+ "cargo-subcommand-metadata",
  "clap",
  "rustc-demangle",
  "tempdir",
 ]
 
+[[package]]
+name = "cargo-subcommand-metadata"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a33d3b80a8db16c4ad7676653766a8e59b5f95443c8823cb7cff587b90cb91ba"
+
 [[package]]
 name = "clap"
 version = "3.1.5"
diff --git a/Cargo.toml b/Cargo.toml
index 2a047ab..8cc24f9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ readme = "README.md"
 
 [dependencies]
 atty = "0.2"
+cargo-subcommand-metadata = "0.1"
 clap = { version = "3.1", features = ["derive", "wrap_help"] }
 rustc-demangle = "0.1"
 tempdir = "0.3"
diff --git a/src/main.rs b/src/main.rs
index e2469c0..48db512 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -23,6 +23,10 @@ use std::process::{self, Command, Stdio};
 use std::str::FromStr;
 use tempdir::TempDir;
 
+cargo_subcommand_metadata::description!(
+    "Count the number of lines of LLVM IR across all instantiations of a generic function"
+);
+
 const ABOUT: &str = "
 Print amount of lines of LLVM IR that is generated for the current project.