diff --git a/media-gfx/imagemagick/imagemagick-6.9.13.16-r1.ebuild b/media-gfx/imagemagick/imagemagick-6.9.13.16-r1.ebuild
index 3a27a91f6b965..080fc19e0b33b 100644
--- a/media-gfx/imagemagick/imagemagick-6.9.13.16-r1.ebuild
+++ b/media-gfx/imagemagick/imagemagick-6.9.13.16-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -103,22 +103,22 @@ src_prepare() {
 	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+                addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }
diff --git a/media-gfx/imagemagick/imagemagick-6.9.13.16.ebuild b/media-gfx/imagemagick/imagemagick-6.9.13.16.ebuild
index d5470d00ae361..8e26cfb2d9a6e 100644
--- a/media-gfx/imagemagick/imagemagick-6.9.13.16.ebuild
+++ b/media-gfx/imagemagick/imagemagick-6.9.13.16.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -103,22 +103,22 @@ src_prepare() {
 	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }
diff --git a/media-gfx/imagemagick/imagemagick-6.9.13.3.ebuild b/media-gfx/imagemagick/imagemagick-6.9.13.3.ebuild
index 51feb1ba7e34f..81adc8b3bf075 100644
--- a/media-gfx/imagemagick/imagemagick-6.9.13.3.ebuild
+++ b/media-gfx/imagemagick/imagemagick-6.9.13.3.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -103,22 +103,22 @@ src_prepare() {
 	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }
diff --git a/media-gfx/imagemagick/imagemagick-7.1.1.25-r1.ebuild b/media-gfx/imagemagick/imagemagick-7.1.1.25-r1.ebuild
index 52d6378e2f262..a9b0dde7fb7c9 100644
--- a/media-gfx/imagemagick/imagemagick-7.1.1.25-r1.ebuild
+++ b/media-gfx/imagemagick/imagemagick-7.1.1.25-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -106,25 +106,25 @@ src_prepare() {
 	#elibtoolize # for Darwin modules
 	eautoreconf
 
-	# For testsuite, see https://bugs.gentoo.org/show_bug.cgi?id=500580#c3
+	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }
diff --git a/media-gfx/imagemagick/imagemagick-7.1.1.38-r1.ebuild b/media-gfx/imagemagick/imagemagick-7.1.1.38-r1.ebuild
index 7a411d2e2d91e..4cb8cbb1251ae 100644
--- a/media-gfx/imagemagick/imagemagick-7.1.1.38-r1.ebuild
+++ b/media-gfx/imagemagick/imagemagick-7.1.1.38-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -108,25 +108,25 @@ src_prepare() {
 	#elibtoolize # for Darwin modules
 	eautoreconf
 
-	# For testsuite, see https://bugs.gentoo.org/show_bug.cgi?id=500580#c3
+	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }
diff --git a/media-gfx/imagemagick/imagemagick-7.1.1.38-r2.ebuild b/media-gfx/imagemagick/imagemagick-7.1.1.38-r2.ebuild
index 63f2b61e4b692..16d4e4c94e356 100644
--- a/media-gfx/imagemagick/imagemagick-7.1.1.38-r2.ebuild
+++ b/media-gfx/imagemagick/imagemagick-7.1.1.38-r2.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -108,25 +108,25 @@ src_prepare() {
 	#elibtoolize # for Darwin modules
 	eautoreconf
 
-	# For testsuite, see https://bugs.gentoo.org/show_bug.cgi?id=500580#c3
+	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }
diff --git a/media-gfx/imagemagick/imagemagick-7.1.1.38.ebuild b/media-gfx/imagemagick/imagemagick-7.1.1.38.ebuild
index 45cfe4d2db470..c3af2faa22297 100644
--- a/media-gfx/imagemagick/imagemagick-7.1.1.38.ebuild
+++ b/media-gfx/imagemagick/imagemagick-7.1.1.38.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -106,25 +106,25 @@ src_prepare() {
 	#elibtoolize # for Darwin modules
 	eautoreconf
 
-	# For testsuite, see https://bugs.gentoo.org/show_bug.cgi?id=500580#c3
+	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }
diff --git a/media-gfx/imagemagick/imagemagick-9999.ebuild b/media-gfx/imagemagick/imagemagick-9999.ebuild
index 36da9357938fc..dae61feb43e47 100644
--- a/media-gfx/imagemagick/imagemagick-9999.ebuild
+++ b/media-gfx/imagemagick/imagemagick-9999.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -106,25 +106,25 @@ src_prepare() {
 	#elibtoolize # for Darwin modules
 	eautoreconf
 
-	# For testsuite, see https://bugs.gentoo.org/show_bug.cgi?id=500580#c3
+	# For testsuite, see bug #500580#c3
 	local ati_cards mesa_cards nvidia_cards render_cards
 	shopt -s nullglob
-	ati_cards=$(echo -n /dev/ati/card* | sed 's/ /:/g')
-	if test -n "${ati_cards}"; then
-		addpredict "${ati_cards}"
-	fi
-	mesa_cards=$(echo -n /dev/dri/card* | sed 's/ /:/g')
-	if test -n "${mesa_cards}"; then
-		addpredict "${mesa_cards}"
-	fi
-	nvidia_cards=$(echo -n /dev/nvidia* | sed 's/ /:/g')
-	if test -n "${nvidia_cards}"; then
-		addpredict "${nvidia_cards}"
-	fi
-	render_cards=$(echo -n /dev/dri/renderD128* | sed 's/ /:/g')
-	if test -n "${render_cards}"; then
-		addpredict "${render_cards}"
-	fi
+	ati_cards=$(echo -n /dev/ati/card*)
+	for card in "${ati_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	mesa_cards=$(echo -n /dev/dri/card*)
+	for card in "${mesa_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	nvidia_cards=$(echo -n /dev/nvidia*)
+	for card in "${nvidia_cards[@]}" ; do
+		addpredict "${card}"
+	done
+	render_cards=$(echo -n /dev/dri/renderD128*)
+	for card in "${render_cards[@]}" ; do
+		addpredict "${card}"
+	done
 	shopt -u nullglob
 	addpredict /dev/nvidiactl
 }