ParseFailure::exit_code

src/info.rs

@@ -131,14 +131,7 @@ impl<T> OptionParser<T> {
     {
         match self.try_run() {
             Ok(t) => t,
-            Err(ParseFailure::Stdout(msg)) => {
-                print!("{}", msg); // completions are sad otherwise
-                std::process::exit(0);
-            }
-            Err(ParseFailure::Stderr(msg)) => {
-                eprintln!("{}", msg);
-                std::process::exit(1);
-            }
+            Err(err) => std::process::exit(err.exit_code()),
         }
     }
 

src/lib.rs

@@ -1643,6 +1643,22 @@ impl ParseFailure {
             }
         }
     }
+
+    /// Run an action appropriate to the failure and produce the exit code
+    ///
+    /// Prints a message to `stdout` or `stderr` and returns the exit code
+    pub fn exit_code(self) -> i32 {
+        match self {
+            ParseFailure::Stdout(msg) => {
+                print!("{}", msg); // completions are sad otherwise
+                0
+            }
+            ParseFailure::Stderr(msg) => {
+                eprintln!("{}", msg);
+                1
+            }
+        }
+    }
 }
 
 /// Strip a command name if present at the front when used as a `cargo` command