I think this reply is non-sense. Below is excerption from previous FAQ, which I believe is a more reliable source than replies:
Q:As a DM, I have ruled that spells with the range of
“touch” are the only spells that allow you to use the holding
the charge rule from Chapter 10 of the Player’s Handbook.
My players argued that any spell that uses a ranged touch
attack, such as disintegrate, also qualified. Which is correct?
A:Look at the spell’s range entry. If it doesn’t say “touch,” you
can’t hold the charge. Disintegrate is a medium range spell
100 ft + 10 ft. per caster level), not a touch range spell.
Because disintegrate is a ray, you do indeed make a ranged
touch attack when using the spell, but that’s not the same as a
range of touch.
I think this FAQ clearly states the concept that, touch range spell is a spell which has "touch" in its "range" entry. The description of spell turning specifies "touch range spells", not "touch attack", so I dont think this rule applies to ray spells.
The point is, "touch attack" has two forms, "ranged touch attack" and "melee touch attack", but it's never a range. And "touch" is a range, which means that the target must be within reach of the caster. I think this situation is just a misnomer, "touch attack" happens to use the same word as "touch range", and leads to confusion, just like the case "level" "spell level" and "character level" ^^(If you have read OOTS#12, I think you would know what I mean)
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