fix!: Bump clap to v4

.clippy.toml

@@ -1 +1 @@
-msrv = "1.56.1"  # MSRV
+msrv = "1.60.0"  # MSRV

.github/workflows/ci.yml

@@ -51,15 +51,15 @@ jobs:
     - name: No-default features
       run: cargo test --workspace --no-default-features
   msrv:
-    name: "Check MSRV: 1.56.1"
+    name: "Check MSRV: 1.60.0"
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
       uses: actions/checkout@v2
     - name: Install Rust
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: 1.56.1  # MSRV
+        toolchain: 1.60.0  # MSRV
         profile: minimal
         override: true
     - uses: Swatinem/rust-cache@v1
@@ -113,7 +113,7 @@ jobs:
     - name: Install Rust
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: 1.56.1  # MSRV
+        toolchain: 1.60.0  # MSRV
         profile: minimal
         override: true
         components: clippy

.github/workflows/rust-next.yml

@@ -57,9 +57,9 @@ jobs:
     strategy:
       matrix:
         rust:
-        - 1.56.1  # MSRV
+        - 1.60.0  # MSRV
         - stable
-    continue-on-error: ${{ matrix.rust != '1.56.1' }}  # MSRV
+    continue-on-error: ${{ matrix.rust != '1.60.0' }}  # MSRV
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository

Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT OR Apache-2.0"
 repository = "https://github.com/rust-clique/clap-verbosity-flag"
 readme = "README.md"
 edition = "2021"
-rust-version = "1.56.1"  # MSRV
+rust-version = "1.60.0"  # MSRV
 include = [
   "src/**/*",
   "Cargo.toml",
@@ -30,7 +30,7 @@ codecov = { repository = "rust-cli/clap-verbosity-flag" }
 
 [dependencies]
 log = "0.4.1"
-clap = { version = "3.0", default-features = false, features = ["std", "derive"] }
+clap = { version = "4.0.0", default-features = false, features = ["std", "derive"] }
 
 [dev-dependencies]
 env_logger = "0.9.0"

src/lib.rs

@@ -11,7 +11,7 @@
 //! # /// Le CLI
 //! # #[derive(Debug, Parser)]
 //! # struct Cli {
-//! #[clap(flatten)]
+//! #[command(flatten)]
 //! verbose: Verbosity,
 //! # }
 //! ```
@@ -24,7 +24,7 @@
 //! # /// Le CLI
 //! # #[derive(Debug, Parser)]
 //! # struct Cli {
-//! #     #[clap(flatten)]
+//! #     #[command(flatten)]
 //! #     verbose: Verbosity,
 //! # }
 //! let cli = Cli::parse();
@@ -48,7 +48,7 @@
 //! /// Le CLI
 //! #[derive(Debug, Parser)]
 //! struct Cli {
-//!     #[clap(flatten)]
+//!     #[command(flatten)]
 //!     verbose: Verbosity<InfoLevel>,
 //! }
 //! ```
@@ -57,34 +57,34 @@
 
 #[derive(clap::Args, Debug, Clone)]
 pub struct Verbosity<L: LogLevel = ErrorLevel> {
-    #[clap(
+    #[arg(
         long,
         short = 'v',
-        parse(from_occurrences),
+        action = clap::ArgAction::Count,
         global = true,
         help = L::verbose_help(),
         long_help = L::verbose_long_help(),
     )]
-    verbose: i8,
+    verbose: u8,
 
-    #[clap(
+    #[arg(
         long,
         short = 'q',
-        parse(from_occurrences),
+        action = clap::ArgAction::Count,
         global = true,
         help = L::quiet_help(),
         long_help = L::quiet_long_help(),
         conflicts_with = "verbose",
     )]
-    quiet: i8,
+    quiet: u8,
 
-    #[clap(skip)]
+    #[arg(skip)]
     phantom: std::marker::PhantomData<L>,
 }
 
 impl<L: LogLevel> Verbosity<L> {
     /// Create a new verbosity instance by explicitly setting the values
-    pub fn new(verbose: i8, quiet: i8) -> Self {
+    pub fn new(verbose: u8, quiet: u8) -> Self {
         Verbosity {
             verbose,
             quiet,
@@ -112,7 +112,7 @@ impl<L: LogLevel> Verbosity<L> {
     }
 
     fn verbosity(&self) -> i8 {
-        level_value(L::default()) - self.quiet + self.verbose
+        level_value(L::default()) - (self.quiet as i8) + (self.verbose as i8)
     }
 }