Improved block scripts

blocks/battery.sh

@@ -1,4 +1,4 @@
 #!/bin/sh
-ICON="
"
+ICON="\x0c\x0b"
 read -r capacity </sys/class/power_supply/BAT0/capacity
-echo "${ICON}${capacity}%"
+printf "$ICON%s%%" "$capacity"

blocks/calendar.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
-ICON=""
-echo "${ICON}$(date '+%a, %d %b')"
+ICON="\x0c\x0b"
+printf "$ICON%s" "$(date '+%a, %b %d, %R')"

blocks/cpu_temp.sh

@@ -1,15 +1,15 @@
 #!/bin/sh
 
-ICONc="" # icon for critical temperatures
-ICONn="" # icon for normal temperatures
+ICONn="\x0c\x0b" # icon for normal temperatures
+ICONc="\x0d\x0b" # icon for critical temperatures
 
 crit=70 # critical temperature
 
 read -r temp </sys/class/thermal/thermal_zone0/temp
 temp=${temp%???}
 
-if [ "$temp" -ge "$crit" ] ; then
-    echo "${ICONc}${temp}°C"
+if [ "$temp" -lt "$crit" ] ; then
+    printf "$ICONn%s°C" "$temp"
 else
-    echo "${ICONn}${temp}°C"
+    printf "$ICONc%s°C" "$temp"
 fi

blocks/volume.sh

@@ -1,11 +1,12 @@
 #!/bin/sh
-ICONhm="" # headphone plugged in, muted
-ICONhn="" # headphone plugged in, not muted
-ICONsm="" # headphone unplugged, muted
-ICONsn="" # headphone unplugged, not muted
-
 pacmd list-sinks |
-    awk -v ihm="$ICONhm" -v ihn="$ICONhn" -v ism="$ICONsm" -v isn="$ICONsn" '
+    awk '
+        BEGIN {
+            ICONsn = "\x0c\x0b" # headphone unplugged, not muted
+            ICONsm = "\x0d\x0b" # headphone unplugged, muted
+            ICONhn = "\x0c\x0b" # headphone plugged in, not muted
+            ICONhm = "\x0d\x0b" # headphone plugged in, muted
+        }
         {
             if (f) {
                 if ($1 == "index:") {
@@ -29,7 +30,7 @@ pacmd list-sinks |
         }
         END {
             if (f) {
-                printf "%s", h ? (m ? ihm : ihn) : (m ? ism : isn)
+                printf "%s", h ? (m ? ICONhm : ICONhn) : (m ? ICONsm : ICONsn)
                 if (vb) {
                     print vb
                 } else {