[eos-bash-shared] small performance improvement

ChangeDisplayResolution

@@ -50,7 +50,7 @@ yad_ChangeDisplayResolution() {
     local b_refresh=10        # button "Set and stay" clicked
     local b_exit=252          # (X) clicked in the upper right corner
 
-    readarray -t resosarr <<< $(echo "$resos")
+    readarray -t resosarr < <(echo "$resos")
 
     if [ -n "$reso" ] ; then
         if [ -n "$(echo "$resos" | grep "$reso")" ] ; then

eos-update

@@ -64,10 +64,10 @@ CheckYourArchMirrorlist() {
     # get working mirrors from the Arch mirrorlist page
     all_working_mirrors=$(curl --fail -Lsm 30 "$url") || DIE "failed to fetch available mirrors (curl code $?)"
     [ "$all_working_mirrors" ] || DIE "-> archlinux.org/mirrorlist failed"
-    readarray -t all_working_mirrors <<< $(echo "$all_working_mirrors" | tail -n +7 | grep "^#Server = " | awk '{print $NF}')
+    readarray -t all_working_mirrors < <(echo "$all_working_mirrors" | tail -n +7 | grep "^#Server = " | awk '{print $NF}')
 
     # get mirrors from local mirrorlist
-    readarray -t local_mirrors <<< $(grep -n "^[ \t]*Server[ \t]*=[ \t]*" $aml | sed 's|[ \t]*Server[ \t]*=[ \t]*||')
+    readarray -t local_mirrors < <(grep -n "^[ \t]*Server[ \t]*=[ \t]*" $aml | sed 's|[ \t]*Server[ \t]*=[ \t]*||')
 
     for lm in "${local_mirrors[@]}" ; do
         if printf "%s\n" "${all_working_mirrors[@]}" | grep "${lm#*:}" >/dev/null ; then

eos-update-descriptions

@@ -114,7 +114,7 @@ Main() {
     CheckValueYesNo "$separator" "--separator"
 
     if [ ${#pkgnames} -eq 0 ] ; then
-        readarray -t pkgnames <<< $(AsPlainUserIfElevated $helper -Quq)       # assumes 'pacman -Sy' was just executed
+        readarray -t pkgnames < <(AsPlainUserIfElevated $helper -Quq)       # assumes 'pacman -Sy' was just executed
         [ ${#pkgnames} -eq 0 ] && return
     fi