From f32abc6e496219a6df9caa382159bdab0e83f5a2 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Tue, 23 Mar 2021 17:56:56 +0100
Subject: sync with ikiwiki 3.20171001

---
 IkiWiki/Plugin/img.pm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm
index 740c44f..79cfba2 100644
--- a/IkiWiki/Plugin/img.pm
+++ b/IkiWiki/Plugin/img.pm
@@ -174,6 +174,12 @@ sub preprocess (@) {
 		my $r = $im->Read("$format:$srcfile\[$pagenumber]");
 		error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
 
+		if ($config{deterministic}) {
+			$im->Set('date:create' => 0);
+			$im->Set('date:modify' => 0);
+			$im->Set('option'      => 'png:exclude-chunk=time');
+		}
+
 		if (! defined $im->Get("width") || ! defined $im->Get("height")) {
 			error sprintf(gettext("failed to get dimensions of %s"), $file);
 		}
-- 
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