From fead7a5da40093bed162abd2c96cf3609fe26b6e Mon Sep 17 00:00:00 2001
From: Manos Pitsidianakis <el13635@mail.ntua.gr>
Date: Sun, 9 Feb 2020 02:56:39 +0200
Subject: [PATCH] meli: add invalid flag combo check

---
 src/bin.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/bin.rs b/src/bin.rs
index 750256fee..cbfde844b 100644
--- a/src/bin.rs
+++ b/src/bin.rs
@@ -301,6 +301,18 @@ fn run_app() -> Result<()> {
         Some(PrintManPage) => {}
     };
 
+    if (args.print_manpage.is_some()
+        ^ args.test_config.is_some()
+        ^ args.create_config.is_some()
+        ^ args.config.is_some())
+        && !(args.print_manpage.is_some()
+            || args.test_config.is_some()
+            || args.create_config.is_some()
+            || args.config.is_some())
+    {
+        error_and_exit!("error: illegal command-line flag combination");
+    }
+
     if let Some(config_path) = args.test_config.as_ref() {
         conf::FileSettings::validate(config_path)?;
         return Ok(());