[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] Allow choosing an image via zenity when no arguments are provided (#408)

[Eliot Miranda]

Hi Leon,

    alas I think this way will fail:

if [ $# -eq 0 && which zenity &>/dev/null ]; then
	  VM_ARGS=$(zenity --title 'Select an image' --file-selection --file-filter '*.image' --file-filter '*')
	else
	  VM_ARGS=$@
	fi
	
	LD_LIBRARY_PATH="$PLUGINS:$SVMLLP:${LD_LIBRARY_PATH}" exec $GDB "$BIN/squeak" "${VM_ARGS}"

That's illustrated by the following test programme:
-----------8<-------------
#!/bin/bash
ARGS=$@
echo; echo A
for a in "$ARGS"; do
	echo $a
done
ARGS="$@"
echo; echo B
for a in "$ARGS"; do
	echo $a
done
ARGS="$@"
echo; echo C
for a in $ARGS; do
	echo $a
done
ARGS=$@
echo; echo D
for a in $ARGS; do
	echo $a
done
-----------8<-------------

If one invokes this with ./testshellargs.sh 'arg one' 'arg two' then the output is

A
arg one arg two

B
arg one arg two

C
arg
one
arg
two

D
arg
one
arg
two

We have to find some way of writing this so that the output is
YES!!!
arg one
arg two

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