Do not align when number starts at first column.

[lifepillar]

I have changed the regexp to trigger the alignment only if there is a digit immediately before the cursor (as before) and the number is preceded by at least one space.

This is to avoid situations where a date (starting at the first column) is confused with a commodity to be aligned.

[kljohann]

Could you add a comment inline explaining exactly that?

[lifepillar]

Done.

[kljohann]

Thanks!