From 7c639fc1313877549fa08100113958458dadb922 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicolas=20=E2=80=9CNiols=E2=80=9D=20Jeannerod?=
 <nicolas.jeannerod@moduscreate.com>
Date: Fri, 21 Feb 2025 15:13:38 +0100
Subject: [PATCH] Support empty strings in `removeTrailingWhitespace`

---
 keys/default.nix | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/keys/default.nix b/keys/default.nix
index 9c1a2bd3..c51049cb 100644
--- a/keys/default.nix
+++ b/keys/default.nix
@@ -18,7 +18,12 @@ let
       maybeMatch = match "(.*)\.pub" s;
     in
     if maybeMatch == null then s else elemAt maybeMatch 0;
-  removeTrailingWhitespace = s: elemAt (match "(.*[^[:space:]])[[:space:]]*" s) 0;
+  removeTrailingWhitespace =
+    s:
+    let
+      maybeMatch = match "(.*[^[:space:]])[[:space:]]*" s;
+    in
+    if maybeMatch == null then "" else elemAt maybeMatch 0;
 
   collectKeys =
     dir: