main/grub: fix fgrep warning

main/grub/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Timo Teräs <timo.teras@iki.fi>
 pkgname=grub
 pkgver=2.06
-pkgrel=16
+pkgrel=17
 pkgdesc="Bootloader with support for Linux, Multiboot and more"
 url="https://www.gnu.org/software/grub/"
 arch="all !s390x"
@@ -71,6 +71,7 @@ source="https://ftp.gnu.org/gnu/grub/grub-$pkgver.tar.xz
 	fix-riscv64.patch
 	fix-xfs-1.patch
 	fix-xfs-2.patch
+	grep-F.patch
 	CVE-2021-3697-1.patch
 	CVE-2021-3697-2.patch
 	CVE-2021-3697-3.patch
@@ -322,6 +323,7 @@ d4e311ed2a849d9424eb215b55e217e7c0db80b54c7dc67679eb1ec81892e4dff77d4e837abbd171
 e2a968890fb54f5a070e1de0a30ae6f0a71952ce5f607bfc43798852398142e342e1477b2b51d74f06ad83f49c35f3c81f6c8c9f9d012bc4a327c266a520124f  fix-riscv64.patch
 ab487cb3f074e04d7bfcbb3bbd76109b3180ba1906baf6d25339496d1e9376673c924b9d11c60f0f8084bf85d5a766f5a5454ae736b75d433731a6100cfd5716  fix-xfs-1.patch
 cfe20d2153375138ca4af2de2e2d076c410d3ecb0d5d8532e9a67a6387705e37013a56ea217df4d4756fff7120467d0f8b5ce60e72a367b4115b8285fb8e07f6  fix-xfs-2.patch
+92aef47138e0ac344eb6e853cff45e811598000f04edf3eb06d1b904c8b73f7c63de4de9044a780e8d047cfbe05c1a508626e6dfc870448f5ec36ca8fbf68666  grep-F.patch
 1ef0c87ab121a71453f9f34725ee33d21dfcc0918662a7483afc8213d773c7b663c6950c2120d54184ac833e8cb51312b1edc42d7649ec37529069d31c692a72  CVE-2021-3697-1.patch
 0fd9e41fabd96ef119b9c24d7f380ad62060d7e3ebb58b832341adb4c682d2b10b2b5e36edc670460fe61e9355460b3af5a32a6c9d91f7fc9c9a2d53f52a15da  CVE-2021-3697-2.patch
 bf9a07f739d2fabd133cdfd360d96f7960b940421130597dadf596bacf0489c64d229b5079ef7bc930e9d6a5c4ad823906340a1d608c4b37571235b976485829  CVE-2021-3697-3.patch

main/grub/grep-F.patch

@@ -0,0 +1,58 @@
+diff --git a/util/grub.d/10_hurd.in b/util/grub.d/10_hurd.in
+index 3663d36..c566821 100644
+--- a/util/grub.d/10_hurd.in
++++ b/util/grub.d/10_hurd.in
+@@ -176,7 +176,7 @@ while [ "x$kernels" != "x" ] ; do
+   hurd_entry "$kernel" advanced
+   hurd_entry "$kernel" recovery
+ 
+-  kernels=`echo $kernels | tr ' ' '\n' | fgrep -vx "$kernel" | tr '\n' ' '`
++  kernels=`echo $kernels | tr ' ' '\n' | grep -F -vx "$kernel" | tr '\n' ' '`
+ done
+ 
+ # If at least one kernel was found, then we need to
+diff --git a/util/grub.d/10_kfreebsd.in b/util/grub.d/10_kfreebsd.in
+index 199b20e..0ed082f 100644
+--- a/util/grub.d/10_kfreebsd.in
++++ b/util/grub.d/10_kfreebsd.in
+@@ -239,7 +239,7 @@ while [ "x$list" != "x" ] ; do
+     kfreebsd_entry "${OS}" "${version}" recovery "-s"
+   fi
+ 
+-  list=`echo $list | tr ' ' '\n' | fgrep -vx "$kfreebsd" | tr '\n' ' '`
++  list=`echo $list | tr ' ' '\n' | grep -F -vx "$kfreebsd" | tr '\n' ' '`
+ done
+ 
+ # If at least one kernel was found, then we need to
+diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
+index 76e006b..a471c5f 100644
+--- a/util/grub.d/10_linux.in
++++ b/util/grub.d/10_linux.in
+@@ -296,7 +296,7 @@ while [ "x$list" != "x" ] ; do
+                 "single ${GRUB_CMDLINE_LINUX}"
+   fi
+ 
+-  list=`echo $list | tr ' ' '\n' | fgrep -vx "$linux" | tr '\n' ' '`
++  list=`echo $list | tr ' ' '\n' | grep -F -vx "$linux" | tr '\n' ' '`
+ done
+ 
+ # If at least one kernel was found, then we need to
+diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
+index 69c76a8..8ae48e7 100644
+--- a/util/grub.d/20_linux_xen.in
++++ b/util/grub.d/20_linux_xen.in
+@@ -349,12 +349,12 @@ while [ "x${xen_list}" != "x" ] ; do
+ 		"single ${GRUB_CMDLINE_LINUX}" "${GRUB_CMDLINE_XEN}"
+ 	fi
+ 
+-	list=`echo $list | tr ' ' '\n' | fgrep -vx "$linux" | tr '\n' ' '`
++	list=`echo $list | tr ' ' '\n' | grep -F -vx "$linux" | tr '\n' ' '`
+     done
+     if [ x"$is_top_level" != xtrue ]; then
+ 	echo '	}'
+     fi
+-    xen_list=`echo $xen_list | tr ' ' '\n' | fgrep -vx "$current_xen" | tr '\n' ' '`
++    xen_list=`echo $xen_list | tr ' ' '\n' | grep -F -vx "$current_xen" | tr '\n' ' '`
+ done
+ 
+ # If at least one kernel was found, then we need to