From 407e629523d1917f50d603dfb75b85e165eab7f1 Mon Sep 17 00:00:00 2001
From: Chris Zehner <chris@cbzehner.com>
Date: Sat, 13 Mar 2021 19:11:50 -0600
Subject: [PATCH] Ignore extra fields in Arg yaml definitions

---
 src/build/arg/mod.rs    | 5 +----
 tests/fixtures/app.yaml | 2 ++
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/build/arg/mod.rs b/src/build/arg/mod.rs
index 38f4e4c4..69cb27bf 100644
--- a/src/build/arg/mod.rs
+++ b/src/build/arg/mod.rs
@@ -4712,10 +4712,7 @@ impl<'help> From<&'help Yaml> for Arg<'help> {
                         panic!("Failed to convert YAML value to vector")
                     }
                 }
-                s => panic!(
-                    "Unknown Arg setting '{}' in YAML file for arg '{}'",
-                    s, name_str
-                ),
+                _ => continue, // Ignore extra fields
             }
         }
 
diff --git a/tests/fixtures/app.yaml b/tests/fixtures/app.yaml
index 4d70bd43..15f955f8 100644
--- a/tests/fixtures/app.yaml
+++ b/tests/fixtures/app.yaml
@@ -4,11 +4,13 @@ about: tests clap library
 author: Kevin K. <kbknapp@gmail.com>
 settings:
     - ArgRequiredElseHelp
+ignored_field: This field is ignored
 args:
     - help:
         short: h
         long: help
         about: prints help with a nonstandard description
+        ignored_field: This field is ignored
     - option:
         short: o
         long: option