From 46373d4d0f9d425a3132529b546b2d83c3796a37 Mon Sep 17 00:00:00 2001
From: Teddy Wing
Date: Sat, 20 Mar 2021 13:40:37 +0100
Subject: main(): Add a version command line argument

Make it easy to find out what version of the program is installed.
---
 src/main.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/main.rs b/src/main.rs
index e96684f..b170a17 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -20,6 +20,7 @@ use thiserror::Error;
 use whatlang::{self, Lang};
 use xdg;
 
+use std::env;
 use std::fs::File;
 use std::io::{self, Read, Write};
 use std::process;
@@ -78,6 +79,16 @@ enum OttolangyError {
 
 
 fn main() {
+    let args: Vec<String> = env::args().collect();
+
+    if args.len() == 2
+        && (args[1] == "-V" || args[1] == "--version")
+    {
+        println!("{}", env!("CARGO_PKG_VERSION"));
+
+        process::exit(exitcode::OK)
+    }
+
     match run() {
         Ok(_) => (),
         Err(e) => {
-- 
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