0007917: Hair items have a hidden quantity modifier

Notes
(0028668) Button (reporter) 2014-08-09 12:55	Just attempted to reproduce this with a cow hair and it maxed out at 7 cow hair thread. I suspect this is just a case of invisible "stacks".

(0028670) 4maskwolf (reporter) 2014-08-09 12:57	What button said. Hair stacks are a finite resource, but for some reason stack size isn't displayed.

(0028678) UristDaVinci (reporter) 2014-08-09 15:53	1. The stack size of hair, wool, and fur items is 1, even when butchered from shearable animals [used DFHack on 0.34.11]. However there is a body part material amount data structure on the item, which contains "hair/wool" (this is the DFHack terminology) amounts for all hair items, in addition "yarn" amounts for shearable hair. FYI this is also how bone items fake a stack size. A single CORPSEPIECE item is named differently depending on what it contains. This bug is technically related to the bone stack issues. 2. Shearable animals suck as sheep have creature tokens such as this: [SELECT_MATERIAL:HAIR] [STATE_NAME:ALL_SOLID:wool] [STATE_ADJ:ALL_SOLID:wool] [YARN] Horses/cows are not shearable and do not have the [YARN] token on their hair. You don't see cow hair or horse hair items brought by caravans. Should they even be spinnable? 3. Therefore, the game appears to accept any item with a "hair/wool" quantity for spinning, but perhaps will only show the available amount if the item has a "yarn" quantity or has the [YARN] token on the material. This bug could also be solved by prohibiting the spinning of non-[YARN] hairs.

(0028681) MisterB777 (reporter) 2014-08-09 16:31	Well, hair thread works well as a trade good (the only reason i bother spinning it). So, would you say this new behavior is caused by the fixed wool stacks in 40.06 (i.e., feature, not bug)? Specifically, "Made reactions count up and trim away body component materials properly"

(0028758) MisterB777 (reporter) 2014-08-10 15:19	Ok, confirming that a single hair item van generate around 7 threads before being used up. So, i guess this is expected behavior based on the yarn changes.

Issue History
Date Modified	Username	Field	Change
2014-08-08 15:51	MisterB777	New Issue
2014-08-08 15:55	MisterB777	Tag Attached: 0.40.06
2014-08-08 15:55	MisterB777	Tag Attached: hair
2014-08-08 15:55	MisterB777	Tag Attached: stack
2014-08-08 15:55	MisterB777	Tag Attached: thread
2014-08-08 21:15	4maskwolf	Note Added: 0028634
2014-08-08 21:16	4maskwolf	Note Deleted: 0028634
2014-08-09 12:55	Button	Note Added: 0028668
2014-08-09 12:55	Button	Tag Attached: Intentional/Expected?
2014-08-09 12:57	4maskwolf	Note Added: 0028670
2014-08-09 14:05	Footkerchief	Summary	Making hair thread does not use up single stack of hair => Hair items have a hidden quantity modifier
2014-08-09 15:53	UristDaVinci	Note Added: 0028678
2014-08-09 16:31	MisterB777	Note Added: 0028681
2014-08-10 15:19	MisterB777	Note Added: 0028758

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