From 524601b9742ae85401805b4db61dd91c9bdf1b44 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Thu, 11 Aug 2016 21:01:51 +0200
Subject: logf: don't call jq's gsub with empty regex :)

---
 krebs/5pkgs/logf/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/krebs/5pkgs/logf/default.nix b/krebs/5pkgs/logf/default.nix
index d9eae0a4a..ac95acb33 100644
--- a/krebs/5pkgs/logf/default.nix
+++ b/krebs/5pkgs/logf/default.nix
@@ -54,7 +54,8 @@ pkgs.writeDashBin "logf" ''
 
         # anaphoric gsub
         def agsub(re; f):
-          gsub("(?<it>\(re))"; .it | f);
+          # Don't try empty regex: https://github.com/stedolan/jq/issues/1206
+          when(re != ""; gsub("(?<it>\(re))"; .it | f));
 
         # :: [int] -> sgr
         def sgr: "\u001b[\(map(tostring) | join(";"))m";
-- 
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