Reading scrolls of spells you can't use destroys the scroll

[schwagg]

Dark Temple, Altar of Blood
You notice 14 gold crowns, 6 silver nobles, skin-covered book here.
Also here: Lotus, Golgotha*.
Obvious exits: west
[HP=337/MA=271]: (Resting) g sk
You took skin-covered book.
[HP=337/MA=271]:read sk
[HP=337/MA=271]:sp
You have the following spells:
Level Mana Short Spell Name
  1   2    mihe  minor healing
  1   1    harm  harm
  2   4    bles  bless
  3   4    turn  turn undead
  4   3    hamm  spiritual hammer
  5   6    prev  protection from evil
  6   10   chan  chant
  7   8    cure  cure poison
  7   6    irfa  iron faith
  8   6    mahe  major healing
  8   5    agon  agony
  9   15   aura  holy aura
  9   8    gcrs  greater curse
10   5    rain  healing rain
10   8    gbls  greater bless
11   10   armr  holy armour
12   12   site  cure blindness
12   12   blin  blind
13   8    hfor  holy force
14   20   rcrs  remove curse
14   12   hold  hold person
15   12   grhe  greater healing
15   24   rite  righteousness
16   8    disr  disrupt
17   15   mrai  major healing rain
19   12   dfav  divine favour
19   12   disf  divine disfavour
21   30   wind  black wind
22   24   gdhe  godheal
23   15   curp  cure paralysis
24   30   grai  greater healing rain
25   20   zeal  zeal
25   30   para  paralyze
25   14   gwra  god's wrath
30   16   fury  divine fury
30   50   dmer  divine mercy
[HP=337/MA=271]:rest
You are now resting.
[HP=345/MA=279]: (Resting) read skin
You do not see skin here!
[HP=345/MA=279]: (Resting) par
You are following Lotus.
The following people are in your travel party:
  Lotus Eater                   (Mystic)     [M: 94%] [H:100%] R - Frontrank
  Golgotha Crucified            (Warrior)             [H: 96%] R - Frontrank
  Third Portal                  (Priest)     [M:100%] [H: 92%] R - Backrank
[HP=345/MA=279]: (Resting)
Dark Temple, Altar of Blood
You notice 14 gold crowns, 6 silver nobles here.
Also here: Lotus, Golgotha*.
Obvious exits: west
[HP=345/MA=279]: (Resting) who
         Current Adventurers
         ===================

   FIEND Albert Hoffman              -  Artiste of Children of Sandoz
   Saint Aldous Huxley               -  Prophet of Children of Sandoz
   Saint Alisten Rawr                -  Warrior Mage of HacknSlash
   Saint Apocalypse Tomorrow         -  Warrior Mage
    Good Ariakis Magebane            -  Annihilator of Wave of Mutilation
   Saint Astromic                    -  Shaman
         Benedict                    -  Acolyte
  Outlaw Coreno Tdh                  -  Monk Lord of HacknSlash
   Saint Crash Bang                  -  Lama
         Cruc1f1ed                   -  Herbalist of Black Rose Immortal
         Cryptic Slaughter           -  Stalker of Black Rose Immortal
    Good Dax Arindal                 -  Enforcer
   Saint DeathCow Moo                -  Grand Exemplar of HornDogPornGod
    Good Dirke                       -  Mercenary
   Saint Dragonstar Evnglo           -  Spellbinder of Siegebreaker
         Dwarven Paly                -  Defender
   Saint Dyson Turnkey               -  Master Rogue of Siegebreaker
         Elrond GauntOne             -  Seeker
   Saint Endora Guardian             -  Wanderer
         Erebus Braindrill           -  Mercenary of Black Rose Immortal
   Saint Figment                     -  Maestro of Tainted Saints
    Good Gardner Denver              -  Mercenary of GreaterMUD.com
    Good Gimli Thedwarf              -  Duelist
   FIEND Goldie Golds                -  Lama
Villain Golgotha Crucified          -  Lord of BurntWitchy's PubNGrub
         Gonad MyNigga               -  Disciple of Jigga'Z NiggaZ
         Greatermud Mudder           -  Squire
   FIEND HellBoy Demon               -  Supreme Archmagi  of Children of Sandoz
   Saint Hydrogen Chloride           -  Rector of Children of Sandoz
   Saint Incabulous                  -  Lord
         Infected Wound              -  Pastor of Black Rose Immortal
   Saint Jackote EatsALot            -  Archbishop of World of GreaterMUD
    Good Jesus Piece                 -  First Knight of Hannover Fist
         Jigga MyNigga               -  Spellslinger of Jigga'Z NiggaZ
         Kahlua                      -  Minstrel of Children of Sandoz
   Saint Kallekk Swamplouse          -  Annihilator of Children of Sandoz
    Good Kelvin ColdAsIce            -  Magus of Wave of Mutilation
   FIEND Killa Zilla                 -  Grand Exemplar of Children of Sandoz
         Lodovico                    -  Theurgist
    Good Lotus Eater                 -  Maharishi of Children of Sandoz
   Saint Magnesium Sulfate           -  First Knight of Children of Sandoz
   FIEND Milwyn Dosesyou             -  Lord Magus of Children of Sandoz
   Saint Myst Me                     -  Myrmidon of Siegebreaker
   Saint Nico Daemus                 -  Zealot of Children of Sandoz
   Saint Precious Healing            -  Pontiff of Siegebreaker
   Saint Random Damage               -  Crusader of Wave of Mutilation
   Saint Remy                        -  Nightstalker of The Watch
         Revolution                  -  Apprentice
         Rza MyNigga                 -  Venerator  of Jigga'Z NiggaZ
    Good Saro                        -  Warrior Priest
Villain Slick Badguy                -  Cardinal of Children of Sandoz
   Saint Sodium Silicate             -  Ranger Lord of Children of Sandoz
   Saint Soul Guardian               -  Lord Justice
         Sparhawk                    -  Nature's Spirit of Tainted Saints
         Strelok MarkedOne           -  Scout of Black Rose Immortal
    Good Suthainn                    -  Entertainer of The Watch
         Talon                       -  Annihilator of Children of Sandoz
    Good Third Portal                -  Minister of BurntWitchy's PubNGrub
         Ugly Stat                   -  Lyricist
         Valiant Guardian            -  Diviner
   Saint Vitoc VonHolden             -  First Knight of World of GreaterMUD
    Good Vulcan Deathgrip            -  Spellbreaker
   Saint Winterhawk Stat             -  Grand Exemplar of Tainted Saints
   Saint Xibyn                       -  Kai Warrior of The Watch
   Saint Yorin Gudhans               -  Archbishop of Siegebreaker
    Good Zeltor Stat                 -  Duelist of HacknSlash

[HP=345/MA=279]: (Resting) par
You are following Lotus.
The following people are in your travel party:
  Lotus Eater                   (Mystic)     [M: 94%] [H:100%] R - Frontrank
  Golgotha Crucified            (Warrior)             [H: 97%] R - Frontrank
  Third Portal                  (Priest)     [M:100%] [H: 92%] R - Backrank
[HP=369/MA=279]: (Resting) i
You are carrying 4 runic coins, 35 platinum pieces, 47 gold crowns, silver hood
(Head), silver gloves (Hands), white gold ring (Finger), gold jeweled ring
(Finger), prismatic slippers (Feet), silver bracers (Arms), crimson cloak
(Back), phoenix feather (Neck), prismatic trousers (Legs), ogre-skin baldric
(Waist), prismatic robes (Torso), golden chalice (Off-Hand), sunstone wristband
(Wrist), witchwood bracelet (Wrist), diamond earrings (Ears), severed head of
Goru-Nezar (Worn), starsteel mace (Weapon Hand), gold keyring, 2 gold emblem,
rope and grapple
You have the following keys: 2 gold key, ornate gold key, bone key.
Wealth: 4354700 copper farthings
Encumbrance: 865/3600 - Light [24%]

I'm good, and the skin-covered book teaches an evil-only spell. As you can see, it ate the book.

[geeogree]

this has happened to me too but I don't have any text to prove it. Except it happened when I already knew the spell but bought and read the scroll without checking if I already had it.

[Gardner Denver]

There is no check on the use of the scroll.  Only the learning of the spell.  We'll fix it.