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try the below scripts. it works as you expected unless there is a space.

te4:

#! /bin/bash
val=`awk '{
i=0
printf("%s ",$i)
}' inp4`
./te5 $val

te5: prints the argument received

#!...

below script will ignore # and blank space


#! /bin/bash
val=`awk '$0 !~ /^[#]|[\ ]/{
i=0
printf("%s ",$0)
}' inp4`
./te5 $val
echo $val

if you want add any other pattern apart from #...