From 9404709f113c6a64fc46fc4e23d958775b6ad89e Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Mon, 11 Mar 2024 11:28:22 -0700
Subject: [PATCH 1/3] update for unknown lang, closes #783

---
 src/main/data/languages.json | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main/data/languages.json b/src/main/data/languages.json
index 5bf44dcd..0fd66958 100644
--- a/src/main/data/languages.json
+++ b/src/main/data/languages.json
@@ -2975,6 +2975,15 @@
       "text"
     ]
   },
+  {
+    "dcncLanguage": "Unknown language",
+    "dcncTag": "UND",
+    "rfc5646Tag": "UND",
+    "use": [
+      "audio",
+      "text"
+    ]
+  },
   {
     "dcncLanguage": "Upper Sorbian",
     "dcncTag": "HSB",

From 9eac31ea2168261904e94c6b87b85826d455023e Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Thu, 14 Mar 2024 10:50:39 -0700
Subject: [PATCH 2/3] lowercase for RFC

---
 src/main/data/languages.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/data/languages.json b/src/main/data/languages.json
index 0fd66958..6e72b1ef 100644
--- a/src/main/data/languages.json
+++ b/src/main/data/languages.json
@@ -2978,7 +2978,7 @@
   {
     "dcncLanguage": "Unknown language",
     "dcncTag": "UND",
-    "rfc5646Tag": "UND",
+    "rfc5646Tag": "und",
     "use": [
       "audio",
       "text"

From 845697fa805ea0d8ae721efa49ad0a2fb7783f4b Mon Sep 17 00:00:00 2001
From: Steve LLamb <38917682+SteveLLamb@users.noreply.github.com>
Date: Thu, 14 Mar 2024 11:01:09 -0700
Subject: [PATCH 3/3] update per comment

---
 src/main/data/languages.json | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/data/languages.json b/src/main/data/languages.json
index 6e72b1ef..7075db80 100644
--- a/src/main/data/languages.json
+++ b/src/main/data/languages.json
@@ -2976,6 +2976,9 @@
     ]
   },
   {
+    "comments": [
+      "Only to be used in fields or elements where the absence of value does not mean 'Unknown language'."
+    ],
     "dcncLanguage": "Unknown language",
     "dcncTag": "UND",
     "rfc5646Tag": "und",