Dwarf Fortress Bug Tracker - Dwarf Fortress
View Issue Details
0009221Dwarf FortressDwarf Mode -- Itemspublic2015-12-04 16:312023-01-07 10:01
PCWindows10, 64 bit
0009221: Visiting scholars leave with fortress books/scrolls/copies/codices
Written books (copies or codexes) are being taken by visiting scholars/scribes and fortress is losing value due to expensive traded books being "stolen"

Original Summary:
Visitors are thieves
1. Have a Library created in Fortress mode with storage containers
2. Have written books/codex stored in Library
3. Have scholars visit and read in the Library
4. Confirm total number of books is reduce/check inventories as scholars/scribes leave
http://dffd.bay12games.com/file.php?id=11432 [^] (0.42.01)
No tags attached.
has duplicate 0009602resolved Knight Otu Guests visiting Library steal books, quires made in fortress 
has duplicate 0010310resolved Loci Scholars 'Borrow' your books and scrolls 
related to 0009886new  Departing Visitor Steals Musical Instrument 
Issue History
2015-12-04 16:31EwcongogamerNew Issue
2015-12-05 19:35spwndloveNote Added: 0033479
2015-12-05 22:08AesculaNote Added: 0033486
2015-12-05 23:59TalvienoIssue Monitored: Talvieno
2015-12-06 03:08maqertasNote Added: 0033490
2015-12-06 12:54HededeIssue Monitored: Hedede
2015-12-07 16:29EwcongogamerNote Added: 0033612
2015-12-09 04:25DetrosNote Added: 0033666
2015-12-09 09:37spwndloveNote Added: 0033676
2015-12-09 09:39spwndloveNote Edited: 0033676bug_revision_view_page.php?bugnote_id=0033676#r13564
2015-12-09 12:55spwndloveNote Added: 0033685
2015-12-16 15:57DwarfuAssigned To => Dwarfu
2015-12-16 15:57DwarfuStatusnew => confirmed
2015-12-27 08:46lethosorAdditional Information Updatedbug_revision_view_page.php?rev_id=13793#r13793
2015-12-27 09:18HuntthetrollIssue Monitored: Huntthetroll
2015-12-27 13:37DwarfuSummaryVisitors are thieves => Visiting scholars leave with fortress books/scrolls/copies/codices
2015-12-27 13:37DwarfuDescription Updatedbug_revision_view_page.php?rev_id=13801#r13801
2016-01-14 21:50EwcongogamerIssue Monitored: Ewcongogamer
2016-02-29 01:37Knight OtuRelationship addedhas duplicate 0009602
2016-05-08 06:29Dame de la LicorneNote Added: 0035096
2016-05-08 06:30Dame de la LicorneIssue Monitored: Dame de la Licorne
2016-05-08 08:52Dame de la LicorneNote Edited: 0035096bug_revision_view_page.php?bugnote_id=0035096#r14157
2016-05-10 03:42JustAnotherLurkerNote Added: 0035113
2016-06-09 22:04BumberNote Added: 0035388
2016-06-09 22:05BumberNote Edited: 0035388bug_revision_view_page.php?bugnote_id=0035388#r14254
2016-06-09 22:05BumberNote Edited: 0035388bug_revision_view_page.php?bugnote_id=0035388#r14255
2016-06-09 22:06BumberNote Edited: 0035388bug_revision_view_page.php?bugnote_id=0035388#r14256
2016-06-21 06:35AesculaIssue Monitored: Aescula
2016-07-11 00:04LociRelationship addedrelated to 0009886
2017-10-19 16:14LociRelationship addedhas duplicate 0010310
2018-12-03 07:24king doomNote Added: 0038987
2019-09-18 11:50FiredirectNote Added: 0039513
2019-09-18 11:50FiredirectNote Edited: 0039513bug_revision_view_page.php?bugnote_id=0039513#r16094
2021-02-04 19:04ANormalUsernameIssue Monitored: ANormalUsername
2023-01-07 10:01walrus-boyNote Added: 0041365

2015-12-05 19:35   
I can confirm that I've seen this. I had one fort that got a good number of scholars (it might have been because I didn't have a tavern; after I opened a tavern the number of scholars dropped off sharply). I started noticing that books were missing after a while. I watched the next two scholars that came to my fort, and both walked off with 1 book each.
2015-12-05 22:08   
I just watched two visiting scholars walk off with stuff. One with a quire, the other with a bound codex. I could not ask them to dump the items.
2015-12-06 03:08   
I also can confirm this, although the stolen book was written by a scholar who was a guest as well.
2015-12-07 16:29   
Still occurring in 42.02
2015-12-09 04:25   
Ewcongogamer, if there was no major version change (0.34->0.40, 0.40->0.42) since last "occurrence check" or update log of last versions doesn't show something that seems like it could affect the reported issue, there is hardly any need to do "occurrence check"s with every new minor update of DF.

This report could rather use a save which would show some of those visitors leaving with items of the fort. If somebody can supply some such in recent versions, please upload it (zipped region folder) to http://dffd.bay12games.com/ [^] and post a link to it here. Thanks.
2015-12-09 09:37   
(edited on: 2015-12-09 09:39)
I caught a thief in the act! Here's the save file: http://dffd.bay12games.com/file.php?id=11432 [^]

Open in fort mode, but don't unpause because the thief is a few steps from the border. Find the visitor Momuz Dastotikud, Naturalist. When he steps off of the map, the scroll called "Victory By Technology" will be missing from my fort. I don't know if it's important, but "Victory By Technology" was written by a different travelling scholar, named Istra, in my fort (Istra didn't have it with him when he arrived, he used my materials to write it, and he left it behind when he left).

Here are some interesting data about before and after Momuz leaves.
- My library already lists the book as missing! It lists written objects (incl. copies) as 7, but if you go to Stocks -> Tools, there are 8 scrolls.
- The artifacts menu still lists "Victory By Tech"
- If you select "Victory By Tech" under Stocks -> Tools and hit [z], it zooms to Momuz
- However, the scroll does not appear in his inventory when you "view unit"(??)

- The library still lists written objects as 7, as expected
- "Victory By Tech" is missing from the artifacts menu
- "Victory By Teceh" doesn't show up in Stocks -> Tools anymore

For what it's worth, in another save file I've seen visitors carry off books written by my dwarves (the scholar in this save file hasn't written anything yet, so I couldn't test it). In those cases, I verified that the book was in their inventory as they were leaving, unlike this scenario where the book isn't showing up in Momuz's inventory. I have a save from that other fort, but it's after the thieving scholars left.

2015-12-09 12:55   
One more quick note: I've kept playing that fortress from my earlier save. It's late autumn now and all of the works from my library are gone. I've been receiving a steady stream of scholar visitors, and although I haven't been keeping a close eye on them anymore, I can only conclude that they are the ones taking the books.
Dame de la Licorne   
2016-05-08 06:29   
(edited on: 2016-05-08 08:52)
I have seen this in my fresh install of the newest DF version (0.42.06), a scholar just walked off with one of my traded codices (I'm now down to one of an initial four). I'm running it on Mac (OSX El Capitan).

My guess is maybe the visitor starts reading the codex, and forgets to drop it before leaving?

2016-05-10 03:42   
I believe this is intended behavior. After all, visiting scholars also will write books/scrolls/quires if you have the materials available in the library, and often leave these behind.

With just a single Scribe assigned in my (fairly large) library and the default 2 copies, I've accumulated a collection of over 70 written works despite "borrowing" by visitors. It only really takes one good farmer and presser/papermaker to keep the library coffers overflowing with pig tail quires to write on.

Mind, I also play with the latest version of the Fortress Defense mod, and the frequent sieges/ambushes combined with visitor hostility bug (http://www.bay12games.com/dwarves/mantisbt/view.php?id=9650 [^]) means that half of my visiting scholars end up in the volcano.
2016-06-09 22:04   
(edited on: 2016-06-09 22:06)
I believe I've had a scholar bring a stolen book back later and put it in the bookshelf. (It feels like scholars are an endangered species in my world, with only one or two left in the wild due to world gen destruction of their habitats.) I just wish they'd only take copies.

king doom   
2018-12-03 07:24   
Related issue, but I've just spotted a human visitor leaving the map carrying a mug he picked up to get a drink.
2019-09-18 11:50   
I had one book in library, got visited by scholar. After he left i noticed book was missing. v 0.44.12

2023-01-07 10:01   
This is still occurring. Had 4 platinum codices disappear