Parse error when key name starts with a number

[Tomaskom-cz]

jsawk fails to extract a value for a key when it's name starts with a number.
(or name of any key in the chain)

This works fine:

echo '{"val1":"v1","2val":"v2"}' | ./jsawk "return this.val1"
v1

This fails:

echo '{"val1":"v1","2val":"v2"}' | ./jsawk "return this.2val"
jsawk: script parse error: 'return this.2val'

[guido4000]

You can escape the key with brackets:

echo '{"val1":"v1","2val":"v2"}' | jsawk "return this['2val']"