From dedfde15f6ad102596d0a3110f9f2852063cbc35 Mon Sep 17 00:00:00 2001
From: Andrew Marshall <andrew@johnandrewmarshall.com>
Date: Thu, 24 Apr 2025 13:47:46 -0400
Subject: [PATCH] format: Set {,XDG_CONFIG_}HOME to empty dir rather than empty
 string

As empty string might get interpreted as `/`, and thus probably has
things in it. This dir is always(?) present on *nix systems, empty, and
owned by root, so ideal and typical for this sort of usage.
---
 format | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/format b/format
index b4b9e1d0..64ba7c56 100755
--- a/format
+++ b/format
@@ -2,8 +2,8 @@
 #! nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/42a1c966be226125b48c384171c44c651c236c22.tar.gz -i bash -p git gnugrep gnused findutils nixfmt-tree
 # Avoid being affected by system and user git config.
 export GIT_CONFIG_NOSYSTEM=1
-export HOME=
-export XDG_CONFIG_HOME=
+export HOME=/var/empty
+export XDG_CONFIG_HOME=/var/empty
 
 nixfmt_args=()
 files=()