Fix indirect var names (#9)

* First look at implementing self testing 👍

* Update Travis lang to be generic

* Fix Travis permdied error

* Try to fix Travis build

* Try to remove cp Travis command

* input path fixes + more tests 🚀

* Update readme

* Fixing invalid indirect names

* Fix [@] arrays problems 👍

utest.sh

@@ -1020,6 +1020,10 @@ function test_err {
   fi
 }
 
+function safename {
+  echo "$1" | tr -cd '[[:alnum:]].@_-'
+}
+
 function evalspec {
   code="${1/\%/\$}"
   eval $code
@@ -1037,6 +1041,8 @@ function evalspecplain {
 function load_prop_variable {
   input_var_name="${1}${2}"
   output_var_name="${3}"
+  output_var_name=$(safename "${output_var_name}")
+  input_var_name=$(safename "${input_var_name}")
   input_var_value_raw="${!input_var_name}"
   input_var_value="$input_var_value_raw"
   if [[ "$4" != "false" ]]; then
@@ -1066,8 +1072,12 @@ function load_prop_value {
 function load_prop_variable_arr {
   input_var_name="${1}${2}[@]"
   output_var_name="${3}"
+  input_var_name=$(safename "${input_var_name}")
+  output_var_name=$(safename "${output_var_name}")
 
   #input_var_value=$(eval echo "\"\${${input_var_name}[@]}\"")
+  input_var_value=$(safename "${input_var_value}")
+  output_var_value=$(safename "${output_var_value}")
   input_var_value=( ${!input_var_name} )
   output_var_value=( ${!output_var_name} )
 
@@ -1236,6 +1246,7 @@ function unload_single_test_configuration_file {
 function run_hook {
   sbusy
   hook_name="flag_hook_${1}[@]"
+  hook_name=$(safename "${hook_name}")
   hook_value=( ${!hook_name} )
 
   hook_result=""