Print a version with --version

CHANGELOG.md

@@ -27,6 +27,8 @@ All notable changes to insta and cargo-insta are documented here.
 
 - Warnings are printed when any snapshot uses a legacy format.  #599
 
+- `cargo insta --version` now prints a version.
+
 - `insta` now internally uses `INSTA_UPDATE=force` rather than
   `INSTA_FORCE_UPDATE=1`.  (This doesn't affect users of `cargo-insta`, which
   handles this internally.)  #482

Cargo.toml

@@ -9,12 +9,18 @@ install-updater = false
 installers = ["shell", "powershell"]
 pr-run-mode = "plan"
 precise-builds = true
-targets = ["aarch64-apple-darwin", "x86_64-apple-darwin", "x86_64-unknown-linux-gnu", "x86_64-unknown-linux-musl", "x86_64-pc-windows-msvc"]
+targets = [
+    "aarch64-apple-darwin",
+    "x86_64-apple-darwin",
+    "x86_64-unknown-linux-gnu",
+    "x86_64-unknown-linux-musl",
+    "x86_64-pc-windows-msvc",
+]
 
 [profile.dist]
 inherits = "release"
 lto = "thin"
 
 [workspace.dependencies]
 # Needs pinning in Cargo.lock because of MSRV
-clap = {version = "4.1", features = ["derive", "env"]}
+clap = { version = "4.1", features = ["derive", "env"] }

cargo-insta/src/cli.rs

@@ -28,9 +28,6 @@ use clap::{Args, Parser, Subcommand, ValueEnum};
 #[command(
     bin_name = "cargo insta",
     arg_required_else_help = true,
-    // TODO: do we want these?
-    disable_colored_help = true,
-    disable_version_flag = true,
     next_line_help = true
 )]
 struct Opts {
@@ -61,6 +58,7 @@ impl fmt::Display for ColorWhen {
 
 #[derive(Subcommand, Debug)]
 #[command(
+    version,
     after_help = "For the online documentation of the latest version, see https://insta.rs/docs/cli/."
 )]
 #[allow(clippy::large_enum_variant)]