Case sensitivity switch for highbeam

highbeam

@@ -19,7 +19,8 @@ Color variables:  $R $G $B $Y $M $C $W $BLACK
 Modify to bright version by prefixing with $H  (e.g. $H$G)
 Background colors: $BGR $BGG $BGB $BGY $BGC $BGM $BGW 
 
-Usage:   highbeam [-h] [-f config]
+Usage:   highbeam [-c] [-h] [-f config]
+   -c    Be case sensitive
    -h    Help
    -f    Define config file (default ~/.highbeamrc)
    -r    Define rules with a string, replaces the other rules
@@ -54,8 +55,12 @@ BGW="${E}47m"
 
 CONF_FILE=~/.highbeamrc
 CONF_LINE=""
-while getopts hf:r: opt
+FLAGS="ig"
+while getopts chf:r: opt
 do  case "$opt" in
+    c)
+        FLAGS="g"
+    ;;
     h)
         usage
         exit
@@ -77,13 +82,13 @@ done
         exit 1
     }
     for (( r=0; r<${#RULES[@]}; r++ ));
-    do  REGEX="$REGEX -e 's/\(${RULES[$r]}\)/${RULES[$(( $r + 1 ))]}\1${Z}/ig'"
+    do  REGEX="$REGEX -e 's/\(${RULES[$r]}\)/${RULES[$(( $r + 1 ))]}\1${Z}/${FLAGS}'"
         r=$(( $r + 1 ))
     done    
 } || {
     # string fed rules
     for (( r=0; r<${#CONF_LINE[@]}; r++ ));
-    do  REGEX="$REGEX -e 's/\(${CONF_LINE[$r]}\)/${CONF_LINE[$(( $r + 1 ))]}\1${Z}/ig'"
+    do  REGEX="$REGEX -e 's/\(${CONF_LINE[$r]}\)/${CONF_LINE[$(( $r + 1 ))]}\1${Z}/${FLAGS}'"
         r=$(( $r + 1 ))
     done
 }