.functions: Add file size output to targz

Closes mathiasbynens#670.

Author: heitorPB

.functions

@@ -35,7 +35,7 @@ function targz() {
 
 	size=$(
 		stat -f"%z" "${tmpFile}" 2> /dev/null; # OS X `stat`
-		stat -c"%s" "${tmpFile}" 2> /dev/null # GNU `stat`
+		stat -c"%s" "${tmpFile}" 2> /dev/null;  # GNU `stat`
 	);
 
 	local cmd="";
@@ -50,10 +50,16 @@ function targz() {
 		fi;
 	fi;
 
-	echo "Compressing .tar using \`${cmd}\`…";
+	echo "Compressing .tar ($((size / 1000)) kB) using \`${cmd}\`…";
 	"${cmd}" -v "${tmpFile}" || return 1;
 	[ -f "${tmpFile}" ] && rm "${tmpFile}";
-	echo "${tmpFile}.gz created successfully.";
+
+	zippedSize=$(
+		stat -f"%z" "${tmpFile}.gz" 2> /dev/null; # OS X `stat`
+		stat -c"%s" "${tmpFile}.gz" 2> /dev/null; # GNU `stat`
+	);
+
+	echo "${tmpFile}.gz ($((zippedSize / 1000)) kB) created successfully.";
 }
 
 # Determine size of a file or total size of a directory