diff --git a/gaboshlib/g_calc.sh b/gaboshlib/g_calc.sh
index 842aa81..d21ac13 100644
--- a/gaboshlib/g_calc.sh
+++ b/gaboshlib/g_calc.sh
@@ -52,5 +52,5 @@ function g_calc {
   fi
 
   # store result
-  g_calc_result="${g_sed_out}"
+  g_calc_result=$g_sed_out
 }
diff --git a/gaboshlib/g_num_is_between.sh b/gaboshlib/g_num_is_between.sh
index f9a7764..ec36eab 100644
--- a/gaboshlib/g_num_is_between.sh
+++ b/gaboshlib/g_num_is_between.sh
@@ -5,19 +5,19 @@ function g_num_is_between {
   local f_between2=$3
 
   # Check for integer (can be done with bash itself)
-  if [[ ${f_num} =~ ^[0-9]+$ ]] && [[ ${f_between1} =~ ^[0-9]+$ ]] && [[ ${f_between2} =~ ^[0-9]+$ ]]
+  if [[ $f_num =~ ^[0-9]+$ ]] && [[ $f_between1 =~ ^[0-9]+$ ]] && [[ $f_between2 =~ ^[0-9]+$ ]]
   then
     # Check which is the low (from) and the high (to) number
-    if [ "${f_between1}" -lt "${f_between2}" ]
+    if [ $f_between1 -lt $f_between2 ]
     then
-      local f_from=${f_between1}
-      local f_to=${f_between2}
+      local f_from=$f_between1
+      local f_to=$f_between2
     else
-      local f_from=${f_between2}
-      local f_to=${f_between1}
+      local f_from=$f_between2
+      local f_to=$f_between1
     fi
     # Check if given number is in or out range
-    if [ ${f_num} -lt ${f_from} ] || [ ${f_num} -gt ${f_to} ]
+    if [ $f_num -lt $f_from ] || [ $f_num -gt $f_to ]
     then
       return 1
     else
@@ -29,21 +29,21 @@ function g_num_is_between {
   g_num_valid_number "$f_num" "$f_between1" "$f_between2" || return 1
 
   # Check which is the low (from) and the high (to) number
-  g_calc "${f_between1} < ${f_between2}"
-  if [ ${g_calc_result} -ne 0 ]
+  g_calc "$f_between1 < $f_between2"
+  if [ "$g_calc_result" -ne 0 ]
   then
-    local f_from=${f_between1}
-    local f_to=${f_between2}
+    local f_from=$f_between1
+    local f_to=$f_between2
   else
-    local f_from=${f_between2}
-    local f_to=${f_between1}
+    local f_from=$f_between2
+    local f_to=$f_between1
   fi
   # Check if given number is in or out range
-  g_calc "${f_num} < ${f_from}"
-  local g_calc_result_from="${g_calc_result}"
-  g_calc "${f_num} > ${f_to}"
-  local g_calc_result_to="${g_calc_result}"
-  if [ ${g_calc_result_from} -ne 0 ] || [ ${g_calc_result_to} -ne 0 ]
+  g_calc "$f_num < $f_from"
+  local g_calc_result_from="$g_calc_result"
+  g_calc "$f_num > $f_to"
+  local g_calc_result_to="$g_calc_result"
+  if [ "$g_calc_result_from" -ne 0 ] || [ "$g_calc_result_to" -ne 0 ]
   then
     return 1
   else
diff --git a/gaboshlib/g_num_is_higher.sh b/gaboshlib/g_num_is_higher.sh
index b619cef..5a15dd3 100644
--- a/gaboshlib/g_num_is_higher.sh
+++ b/gaboshlib/g_num_is_higher.sh
@@ -19,7 +19,7 @@ function g_num_is_higher_equal {
   g_num_valid_number "$f_num" "$f_checkhigher" || return 1
  
   g_calc "${f_num} >= ${f_checkhigher}"
-  if [ ${g_calc_result} -ne 0 ]
+  if [ "${g_calc_result}" -ne 0 ]
   then
     return 0
   else
@@ -46,9 +46,9 @@ function g_num_is_higher {
 
   # Check for valid number
   g_num_valid_number "$f_num" "$f_checkhigher" || return 1
- 
+  
   g_calc "${f_num} > ${f_checkhigher}"
-  if [ ${g_calc_result} -ne 0 ]
+  if [ "${g_calc_result}" -ne 0 ]
   then
     return 0
   else
diff --git a/gaboshlib/g_num_is_lower.sh b/gaboshlib/g_num_is_lower.sh
index 806478e..7d415cd 100644
--- a/gaboshlib/g_num_is_lower.sh
+++ b/gaboshlib/g_num_is_lower.sh
@@ -19,7 +19,7 @@ function g_num_is_lower_equal {
   g_num_valid_number "$f_num" "$f_checklower" || return 1
  
   g_calc "${f_num} <= ${f_checklower}"
-  if [ ${g_calc_result} -ne 0 ]
+  if [ "${g_calc_result}" -ne 0 ]
   then
     return 0
   else
@@ -49,7 +49,7 @@ function g_num_is_lower {
   g_num_valid_number "$f_num" "$f_checklower" || return 1
  
   g_calc "${f_num} < ${f_checklower}"
-  if [ ${g_calc_result} -ne 0 ]
+  if [ "${g_calc_result}" -ne 0 ]
   then
     return 0
   else
diff --git a/gaboshlib/g_traceback.sh b/gaboshlib/g_traceback.sh
index a803edf..dab4faf 100644
--- a/gaboshlib/g_traceback.sh
+++ b/gaboshlib/g_traceback.sh
@@ -1,5 +1,6 @@
 function g_traceback {
   local deptn=${#FUNCNAME[@]}
+  local i
   for ((i=1; i<$deptn; i++)); do
     local func="${FUNCNAME[$i]}"
     local line="${BASH_LINENO[$((i-1))]}"
@@ -7,4 +8,5 @@ function g_traceback {
     printf '%*s' $i '' # indent
     echo "at: $func, $src, line $line" 1>&2
   done
-}
\ No newline at end of file
+  echo "$@" 1>&2
+}