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A key component of the damage formula is known as "M".  Many steps go into it,
but later ones of note are:
 - Shortly before final damage is computed, if M is 0, it's given a floor of 1
   to avoid zero damage.
 - M can be doubled after finalizing damage if the target's "Can't Evade"
   parameter matches the attack type, in a little-known bonus.
 - Damage or healing is recalculated in some cases: the attack is "Magic
   Sword Drain", it's "Magic Sword Psych", or there's a nonzero Variable $63
   without "Healing?" (elemental absorb, it seems) happening.  (Note that Psych
   has its own formula, so it won't make use of the new M as the others do.)
However, there are problems involving the doubling and the flooring, depending
on which function an attack type calls to finalize damage:

Function A (C2/8811) will multiply M by 2 if "Target Can't Evade vs. Attack
type".  However, because M isn't copied after it's floored from 0 to 1, the
doubling bonus does nothing in this one case -- a small mistake.

Function B (C2/8A05) MIGHT multiply M by 2 if "Target Can't Evade vs. Attack
type".  Note that there's no damage recalculation for Magic Sword Drain or
Psych, which apparently don't use this function.  The routine does re-enforce
minimum M before doubling, but because an instruction branches too far, M is
doubled ONLY IF it was found to be 0 and floored at 1.  Thus, the "Target Can't
Evade vs. Attack type" bonus is being applied VERY narrowly.  A big mistake.

This patch fixes Function A by re-enforcing Minimum M before applying the
bonus, and Function B by shortening the branch so the bonus can apply in more
than just one case.