Sys. Refactor number parsing for length and readability

Sys. Refactor number parsing for length and readability

"The rule of index of the longest match" is introduced also for bullet
parsing. In finding longest index, the length vector middle step is
removed for the benefit of iterator chaining. The *conf* templates are
produced symmetrically between bullet and number patterns. Debug
printing is reduced, concentrated and made symmetric. Finally, a
bullet test is updated as a consequence of introducing the longest
index rule for bullets.