Document fix for StatUpHit effects when opponent is KO'd

docs/bugs_and_glitches.md

@@ -37,6 +37,7 @@ Fixes in the [multi-player battle engine](#multi-player-battle-engine) category
   - [Dragon Scale, not Dragon Fang, boosts Dragon-type moves](#dragon-scale-not-dragon-fang-boosts-dragon-type-moves)
   - [HP bar animation is slow for high HP](#hp-bar-animation-is-slow-for-high-hp)
   - [HP bar animation off-by-one error for low HP](#hp-bar-animation-off-by-one-error-for-low-hp)
+  - [Moves that do damage and increase your stats do not increase stats after a KO](#moves-that-do-damage-and-increase-your-stats-do-not-increase-stats-after-a-ko)
 - [Single-player battle engine](#single-player-battle-engine)
   - [A Transformed Pokémon can use Sketch and learn otherwise unobtainable moves](#a-transformed-pokémon-can-use-sketch-and-learn-otherwise-unobtainable-moves)
   - [Catching a Transformed Pokémon always catches a Ditto](#catching-a-transformed-pokémon-always-catches-a-ditto)
@@ -764,6 +765,82 @@ This bug existed for all battles in Gold and Silver, and was only fixed for sing
  	jr .loop
 ```
 
+### Moves that do damage and increase your stats do not increase stats after a KO
+
+The `checkfaint` routine skips the stats increasing effects if the opponent is KO'd, unlike in modern pokemon games.  Note that this can lead to stats being increased at the end of battle, but will not have any negative effects.
+
+**Fix:** Make the following changes in [data/moves/effects.asm](https://github.com/pret/pokecrystal/blob/master/data/moves/effects.asm)
+
+```diff
+ DefenseUpHit:
+  checkobedience
+  usedmovetext
+  doturn
+  critical
+  damagestats
+  damagecalc
+  stab
+  damagevariation
+  checkhit
+  effectchance
+  moveanim
+  failuretext
+  applydamage
+  criticaltext
+  supereffectivetext
++ defenseup
+  checkfaint
+  buildopponentrage
+- defenseup
+  statupmessage
+  endmove
+
+
+ AttackUpHit:
+  checkobedience
+  usedmovetext
+  doturn
+  critical
+  damagestats
+  damagecalc
+  stab
+  damagevariation
+  checkhit
+  effectchance
+  moveanim
+  failuretext
+  applydamage
+  criticaltext
+  supereffectivetext
++ attackup
+  checkfaint
+  buildopponentrage
+- attackup
+  statupmessage
+  endmove
+
+ AllUpHit:
+  checkobedience
+  usedmovetext
+  doturn
+  critical
+  damagestats
+  damagecalc
+  stab
+  damagevariation
+  checkhit
+  effectchance
+  moveanim
+  failuretext
+  applydamage
+  criticaltext
+  supereffectivetext
++ allstatsup
+  checkfaint
+  buildopponentrage
+- allstatsup
+  endmove
+```
 
 ## Single-player battle engine