WoW:API IsPassiveSpell

IsSpellPassive -Documentation by Myrrion aka Paul2200-

if ( IsSpellPassive(spellID,spellbooktabnum) )...

Returns whether the icon in your spellbook is a Passive ability (not necessarily a spell). (And actually noted as so in spellbook)

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Arguments

(spellID, spellbooktabnum??)

spellID

The slot number in your spellbook. Each page has 12 slots and the numbering continues throughout your entire spellbook, ignoring empty slots.

spellbooktabnum??

Not sure, had no effect whatsoever on results

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Returns

1 or nil

1

The "spell" is Passive

nil

The "spell" is not Passive

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Example

message(GetSpellTexture(1,1234567890));

Result

message box with a "1" or empty, depending on whether or not the very first icon in your spellbook is passive.

Note: The second number actually has no significance on the output.
(1,1) is the first slot and so is (1,92183098).
(Although, it may be used ONLY if you have pet spells..?)

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Details

With my Human Paladin, here are the "spells" I found to be Passive:

Block (Passive)

Diplomacy (Racial Passive)

Dodge (Passive)

Mace Specialization (Passive)

Parry (Passive)

Sword Specialization (Passive)

The Human Spirit (Racial Passive)

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