From c80aee7a0b5f3bc064e7f02d9c3d10dc83f1ce73 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sat, 11 Jun 2016 16:11:22 +0200
Subject: krebs types.filename: admit <underscore>

---
 krebs/4lib/types.nix | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

(limited to 'krebs/4lib')

diff --git a/krebs/4lib/types.nix b/krebs/4lib/types.nix
index f65d5b68..b048f48d 100644
--- a/krebs/4lib/types.nix
+++ b/krebs/4lib/types.nix
@@ -325,10 +325,7 @@ types // rec {
   # POSIX.1‐2013, 3.278 Portable Filename Character Set
   filename = mkOptionType {
     name = "POSIX filename";
-    check = let
-      filename-chars = stringToCharacters
-        "-.0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
-    in s: all (flip elem filename-chars) (stringToCharacters s);
+    check = x: match "[0-9A-Za-z._-]+" x != null;
     merge = mergeOneOption;
   };
 
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