userland/git: --version and commit --no-gpg-sign (no-op)

userland/git/src/lib.rs

@@ -131,6 +131,9 @@ enum Command {
         all: bool,
         #[arg(long)]
         allow_empty: bool,
+        /// Accepted for compatibility. This git never signs commits.
+        #[arg(long)]
+        no_gpg_sign: bool,
     },
     Log {
         #[arg(long)]
@@ -340,6 +343,7 @@ pub fn run(cli: Cli) -> Result<i32> {
             message,
             all,
             allow_empty,
+            ..
         } => {
             let before = head_info(&repository)?;
             if !allow_empty && merge::pending_parent(&repository)?.is_none() {

userland/git/src/main.rs

@@ -1,6 +1,10 @@
 //! Parse Git CLI arguments and return Git-compatible usage and operation exit codes.
 use clap::{Parser, error::ErrorKind};
 fn main() {
+    if matches!(std::env::args().nth(1).as_deref(), Some("--version" | "version")) {
+        println!("git version {}.sausage", env!("CARGO_PKG_VERSION"));
+        exit(0);
+    }
     let cli = match git::Cli::try_parse() {
         Ok(cli) => cli,
         Err(error) => {