Addded history also for eval statements
How to treat non numerical values for history?

Allowed are the three following options:
1. complain (issue an error message)
2. extract  (take the first valid number in the string)
3. skip     (silently skip the non numerical string)

The default is 'complain', but other options may be set via
command line '-s history_non_numerical_value=<,complain,extract>.
The default is 'complain'.