From cf6f1f4c0db9e77aa8c0d91200bbcc5c1ee696a5 Mon Sep 17 00:00:00 2001
From: Omar Siam <Omar.Siam@oeaw.ac.at>
Date: Wed, 29 Jan 2025 15:17:15 +0100
Subject: [PATCH] Fix 500 on an empty query in request

tr can accept and return an empty sequence.
---
 vicav.xqm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vicav.xqm b/vicav.xqm
index fe3a7f9..046cfc4 100644
--- a/vicav.xqm
+++ b/vicav.xqm
@@ -1944,7 +1944,7 @@ function vicav:get_sample_persons($type as xs:string*) {
         <persons>{$out}</persons>)
 };
 
-declare function vicav:tr($string as xs:string) {
+declare function vicav:tr($string as xs:string?) {
     let $tr := translate($string, 
         "ᵃᵉⁱᵒᵘᵊʰʷʸˢᶴQāēīōūḅṭḍṣẓḏšžṛḥṃǧġʕʔ",
         "aeiouehwyssqaeioubtdszdszrhmgg??"