Provide warnings for missing whitespaces on {

[de-jcup]

./feature-143-scopetest.sh: line 6: syntax error near unexpected token local' ./feature-143-scopetest.sh: line 6: local my_local_var=1'

reason was :

function f1{
...
}

by changing to

function f1 {
...
}

it was working (the space between f1 and { was the reason!