Regex incompatibility

[qnighy]

My friend pointed out that a game 魔法少年の迷宮 (trial version) fails to load because of regex compilation error.

The regex in question is /\s*+\s*/. It has nested */+s. It works in the latest Ruby version.

Why is this so problematic?

Because it may imply that the author of RGSS1/2 have replaced GNU-made regex.c in Ruby1.8.1 with some other engines, possibly due to licensing reason.

We'll have to figure out what engine was used as a substitution.

Log

unimplemented: kernel32.dll: RtlZeroMemory
unimplemented: kernel32.dll: MultiByteToWideChar
unimplemented: kernel32.dll: WideCharToMultiByte
unimplemented: user32.dll: MessageBoxA
unimplemented: kernel32.dll: GetPrivateProfileStringA
#∟Audio-EX 対応版:39: warning: already initialized constant DEBUG_CHECK
#∟Audio-EX 対応版:50: warning: already initialized constant DELETE_DEBUG_MESSAGE
#∟Audio-EX 対応版:925: warning: already initialized constant MB_OK
#∟Audio-EX 対応版:926: warning: already initialized constant MB_OKCANCEL
#∟Audio-EX 対応版:927: warning: already initialized constant MB_ABORTRETRYIGNORE
#∟Audio-EX 対応版:928: warning: already initialized constant MB_YESNOCANCEL
#∟Audio-EX 対応版:929: warning: already initialized constant MB_YESNO
#∟Audio-EX 対応版:930: warning: already initialized constant MB_RETRYCANCEL
#∟Audio-EX 対応版:932: warning: already initialized constant MB_ICONERROR
#∟Audio-EX 対応版:933: warning: already initialized constant MB_ICONQUESTION
#∟Audio-EX 対応版:934: warning: already initialized constant MB_ICONWARNING
#∟Audio-EX 対応版:935: warning: already initialized constant MB_ICONINFORMATION
#∟Audio-EX 対応版:936: warning: already initialized constant MB_SYSTEMMODAL
#∟Audio-EX 対応版:937: warning: already initialized constant MB_TASKMODAL
#∟Audio-EX 対応版:938: warning: already initialized constant MB_TOPMOST
#∟Audio-EX 対応版:939: warning: already initialized constant MB_FATAL
#∟Audio-EX 対応版:940: warning: already initialized constant MB_WARN
#∟Audio-EX 対応版:942: warning: already initialized constant IDOK
#∟Audio-EX 対応版:943: warning: already initialized constant IDCANCEL
#∟Audio-EX 対応版:944: warning: already initialized constant IDABORT
#∟Audio-EX 対応版:945: warning: already initialized constant IDRETRY
#∟Audio-EX 対応版:946: warning: already initialized constant IDIGNORE
#∟Audio-EX 対応版:947: warning: already initialized constant IDYES
#∟Audio-EX 対応版:948: warning: already initialized constant IDNO
#∟Audio-EX 対応版:952: warning: already initialized constant ERROR_SECTION_NUM
#∟Audio-EX 対応版:953: warning: already initialized constant ERROR_SECTION
#∟Audio-EX 対応版:954: warning: already initialized constant DOUBLE_CRLF
unimplemented: user32.dll: MessageBoxA
unimplemented: kernel32.dll: GetPrivateProfileStringA
∟ノベル用に改造:13: warning: found = in conditional, should be ==
ギルドシステム（Mission総まとめ:1063: warning: don't put space before argument parentheses
カレンダー:35: warning: don't put space before argument parentheses
+Window_Base2:12: warning: already initialized constant WLH
unimplemented: TRGSSX.dll: DllGetVersion
unimplemented: TRGSSX.dll: GetInterpolationMode
unimplemented: TRGSSX.dll: SetInterpolationMode
unimplemented: TRGSSX.dll: GetSmoothingMode
unimplemented: TRGSSX.dll: SetSmoothingMode
unimplemented: TRGSSX.dll: RopBlt
unimplemented: TRGSSX.dll: ClipBlt
unimplemented: TRGSSX.dll: BlendBlt
unimplemented: TRGSSX.dll: StretchBltR
unimplemented: TRGSSX.dll: SkewBltR
unimplemented: TRGSSX.dll: DrawPolygon
unimplemented: TRGSSX.dll: FillPolygon
unimplemented: TRGSSX.dll: DrawRegularPolygon
unimplemented: TRGSSX.dll: FillRegularPolygon
unimplemented: TRGSSX.dll: DrawSpoke
unimplemented: TRGSSX.dll: DrawTextNAA
unimplemented: TRGSSX.dll: DrawTextFastA
unimplemented: TRGSSX.dll: GetTextSizeNAA
unimplemented: TRGSSX.dll: GetTextSizeFastA
unimplemented: TRGSSX.dll: SaveToBitmapA
unimplemented: gdi32.dll: DeleteObject
unimplemented: gdi32.dll: CreateRectRgn
unimplemented: gdi32.dll: CreateRectRgnIndirect
unimplemented: gdi32.dll: CreateRoundRectRgn
unimplemented: gdi32.dll: CreateEllipticRgn
unimplemented: gdi32.dll: CreateEllipticRgnIndirect
unimplemented: gdi32.dll: CreatePolygonRgn
unimplemented: gdi32.dll: CreatePolyPolygonRgn
unimplemented: gdi32.dll: CombineRgn
多人数パーティ - KGC_LargeParty:358: warning: already initialized constant MAX_MEMBERS
装備拡張(魔法少年　魔石x5:94: warning: already initialized constant SHOW_STATUS_EP
装備拡張(魔法少年　魔石x5:95: warning: already initialized constant HIDE_ZERO_EP_COST
装備拡張(魔法少年　魔石x5:909: warning: already initialized constant EQUIP_TYPE_MAX
世界樹の迷宮風戦闘：隊列変更:436: warning: already initialized constant FORMATION_MEMBERS
\∟スプリット変更（,⇒★）:8: warning: already initialized constant BDM_WORD
\∟スプリット変更（,⇒★）:9: warning: already initialized constant ATK_WORD
\∟スプリット変更（,⇒★）:10: warning: already initialized constant SPI_WORD
\∟スプリット変更（,⇒★）:11: warning: already initialized constant SPD_WORD
\∟スプリット変更（,⇒★）:14: warning: already initialized constant S_ATK_RE
\∟スプリット変更（,⇒★）:15: warning: already initialized constant S_DEF_RE
\∟スプリット変更（,⇒★）:16: warning: already initialized constant S_SPI_RE
\∟スプリット変更（,⇒★）:17: warning: already initialized constant S_AGI_RE
ScriptSyntaxError: スキルレベル改:395compile error
スキルレベル改:129: nested *?+ in regexp: /\s*+\s*/
	from (eval):743
	from (eval):743
	from (eval):741:in `each'
	from (eval):741