Progress

src/command.rs

@@ -2,6 +2,10 @@ use std::process::Command;
 
 use anyhow::{Context, anyhow, bail};
 
+/// Spawn a subprocess with arguments.
+///
+/// Collects `stdout` and returns it on success.
+/// Returns `Err` if the exit code isn't 0, or if the process failed to spawn.
 pub fn cmd(cmd: &[&str]) -> anyhow::Result<String> {
     let [cmd, args @ ..] = cmd else {
         bail!("missing command");