Bug in (small) bash script

Question

I've been trying to find a bug in this test script, but haven't been able to so far. I'm not lazy, I promise...just new to Bash so am having a hard time catching syntax errors. I'd really appreciate it if someone could help me.

Here's the code. I call the script with the option -disableVenusBld, and it still prints "Starting build", which it shouldn't be doing right?

while [ $# -ne 0 ]
do
 arg="$1"
 case "$arg" in
  -disableVenusBld)
   disableVenusBld=true
   ;;
  -disableCopperBld)
   disableCopperBld=true
   ;;
  -disableTest)
   disableTest=true
   ;;
  -disableUpdate)
   disableUpdate=true
   ;;
  *)
   nothing="true"
   ;;
 esac
 shift
done

if [ "$disableVenusBld" != true ]; then
 echo "Starting build"
fi

Answer 1

I can't see anything wrong with your script, and it does what you expect when I run it:

$ bash -x 186724.sh
+ '[' 0 -ne 0 ']'
+ '[' '' '!=' true ']'
+ echo 'Starting build'
Starting build
$ bash -x 186724.sh -disableVenusBld
+ '[' 1 -ne 0 ']'
+ arg=-disableVenusBld
+ case "$arg" in
+ disableVenusBld=true
+ shift
+ '[' 0 -ne 0 ']'
+ '[' true '!=' true ']'

Note that I ran the script with bash -x. This causes all the lines beginning with + to be printed: you get a trace of the execution of your script. Do the same with your actual script to figure out where the problem is.