Modified the generateTranslationDiffs.sh file, runs ~34% faster

tools/generateTranslationDiffs.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Append translation differences on the end of all files.  Developers should run this script 
 # after changing default, so that translators can easily see what items need to be translated.
@@ -15,36 +15,34 @@ if [[ $? != 0 ]]; then
 	exit
 fi
 
-#First thing, we want to strip default of any !s and duplicates.
-cat "default" | grep -v '^!' | sort -Vu > "$TEMP"
+#First thing, we want to strip default of any "!" and duplicates.
+grep -v '^!' default | sort -Vu > "$TEMP"
 mv "$TEMP" "default"
 
 echo "Generating differences... this may take a few minutes."
 
-find . | 
-grep -v 'default' | 
-grep -v 'README' | 
-grep -v 'LICENSE' | 
-grep -v 'generateDiffs.sh' | 
-grep -v "$TEMP" |
-grep -v '^.$' |
+#Find all language files, excluding non-language files
+find . -not -iname "default" -not -iname "LICENSE" -not -iname "README" -not -iname "*.sh"  -not -iname ".*" -not -iname "$TEMP" |
 
+#for every found language file X
 while read X; do 
 	echo "Working on differences for $X"
 
-	#Start by copying the existing file to a temporary one, after sorting and removing all 
-	#previous differences
-	cat "$X" | grep -v '^!' | sort -Vu > "$TEMP"
+	#Start by copying the existing file to a temporary one, after sorting and removing all "!"
+	grep -v '^!' "$X" | sort -Vu > "$TEMP"
 
 	echo -e "\n\n!!!!!!!!!!!!!!!!!!!!!!!!!\n! Untranslated keys follow; remove the ! prefix after an entry is translated.\n!!!!!!!!!!!!!!!!!!!!!!!!!\n\n" >> "$TEMP"
 
-	cat 'default' | grep -v '^#' | while read LINE; do
-		KEY=`echo "$LINE" | cut -f 1 -d ';'`
-		grep -q "^$KEY" "$X";
-		if [[ $? != 0 ]]; then
-			echo "!$LINE" >> "$TEMP"
-		fi
-	done
+	#find every line that is not a comment
+	grep -v '^#' default | while read LINE
+		do
+			KEY=${LINE%%;*}
+			grep -q "^$KEY" "$X"
+			if [[ $? != 0 ]]
+				then
+					echo '!'"${LINE}" >> "$TEMP"
+			fi
+		done
 
 	#Replace the old file with the new one, with a section at the end for differences.
 	mv "$TEMP" "$X"