Kyle: the trick with these is to change the expression to make it as
unambiguous as possible: the exception is thrown when the regex state
machine visits too many states while trying to find a match and then gives
it up as a lost cause rather than risking looking indefinitely.
In this case the first (.*|\\n*) is superfluous since . can match \n as
well, so the machine can "thrash" if it encounters a lot of whitespace.
Using (?!System)* fixed the problem and brought the execution time down
enormously.
That works for the previous input file but not the attached one (which does
work with the older regex lib and original expression).
Kyle
begin 666 input.zip
M4$L#!!0````(`"D^.C:;2I0HHP@``#EO```)````:6YP=70N='AT[5Q?;]LV
M$']>@7X'(D\.YLIML:% VQ1(G*[-D'59G*P#@CS0$FMSE46-I))Z13_9'O:1
M]A5VU%_*IFG9M>0FEAX/W4>
M.S\^?O;TF?/#4R64"_;'.!@1`=V15,-_H#Y!$SQ%+HX$031P&>?$E6A(QOB&
M,HYPX*%;ZOO0@GPF)*(?\M'DF"0*PDBKWL&0Q;CLDJQ\,'\4SQ3XR6
M8!%W20%:60.%W*WP_&Z&TX&.DY..%> )$2&&87[%@@KG\L0YX^S3%'U^^$ 9
M'0D:C-!@*B29.,<4CP) A;KBA>'R>S)T!H3?4)>HZ]\E%]-Q)?5-??IL$K*
M!/(7L,(HH8^J=)/,9;YI?E/G/R:^ZDRQ3__&$D P"1UCB=-V_;>GW,K)!/./
MHOH<
MDV$T&A$^D"2\&',6C<;%<+,=R^A!7T%'H$<?%!DQ/M7T4$$R-V\)6OA'>GY$
M`P_@*7J_@R YV.NSX /EDQC&`<,AF/4NBYZ#O;&4X?->#X8-(TX=QD>]?+XP
M&OK412'F$CR!7!\+@?3AT'.[MQTUWUN8H>]3L#9KSX*T\-DBOVE:Z/-V]O4A
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M_P&[V".]6WU6!XO)I[T7Q<1?3&9\:\<B6(W!5/;<,7.CB8I2(L?,TZ+2$#1O
MB/P)`#VE0D* G9._(B+DDCA3<@(209"E@I>"')@4AM1Q.0UC]RB5TQP`<>>4
M2DAMX-$SS&%XJ7)SZIN'*=M=[N"\YS@,B9=EA3K2F-2(*/X9$(DT(#HT@)7H
M`M8\:('ANBAN."<C4'<NA-GP3UC3KJYAD1*1+P6$:!RM)\$-^PB@EQ%6,9[W
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M'E_O[W<EC\C^LJQ9DOSI+">'8AJXY_'HZ A4#JJBW<V&B$?H8]\?8O<C%!3)
M23?%$F%U>2#!OCG_I%C$/HGG;M(Q74U53<?-P%J*W]>!IX-J0AX7YY6C&(9-
M\=)[-Q%NV4GS1'@T59JW=%B"8UF:CAF72@YY<G)LRL,5>#)W0"U):9%(=;_3
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M6KG*C%;3Q%&VM"6,M>NXECX,U5P:72L7"?'UI//7%WBF1&NR&+"-D>AV#PK!
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M`:6A=!$`=C!2?WY6H*B,@'R,9"*S)@4:G50Y,Q-#%@O,6&,9*39Q\77=Z#G*
M36T'TSH*WR(-GD :F!,K%KRZ+F=,78S;0!C4Q]IW,4#J6262G ;Z-OASR>*P
M?IY66BWJ2(#LI*'%XC+T=G C^H91#^FF=[082;)^P5Y"B<1GP*N<G>D\BR4,
M6P$;9<8JIM=);G4#5P\1Q5$#Q%!";]7RM!J[-$T#`Q+LT!UN[$AE<CGV*Q<$
M1QQ<QU67K"C@29/"PTX9*=";B_CJ*WFN]6(9W8[ZV*<NY.MDK#ODMWK)+W;>
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M2RHIUO>#5MX0><;IA)PQ06-RW_EGN64XDI0:$#>[WZ 7TW"ME[+G8*Z<',GL
M%@&ETIU\%%L%ZYH?NM;MEJ:?I,Y NBI+M:^W$*D7N^?$)?2&>,J&':+&_#TV
M"QQZM;$.(5I@7K%N6,1]$&^9(<ULXE=$JV9*VR"P-;%7'EX)9RW$;!OL52EH
MLI-&-[[S9Q<[N?>=6V^^RY%\
M`/3>W-CIM+J#W)'FPB(@-EF^?$4*+*Y=$OVW4K@L8)?&JI:OP;,>LDB#:;Y>
M69\W-E.L+(N2[*0AVCEE[.-E>':T:]_^)VX`9Y8!Z.3MF ^FDR'SN^DK(IA?
M!A[A_A0N%VW)AD>QBE]P[!$U4+8A8GY+?67^FG-3U2S+S;"):);9Q&)CK15
M8;XE[S?Q/[QT
M;=2RCGR;"7^GEX;->[<)_K\/@= ,7CSBT@GVD>?^%N'XHR:][0UG0IQQ
ML%-O[;/)A H1TTO1^BY^$.D6LX-9`40NO8D'31MG:"S6LF"Q('F6>:1>^ZBR
MIVL(GY7V#FS,$(.^^'K%RK+L&.MTL]ZR#[J,1S6'VH0T#]O$-)?;Q/(8L!I:
M"@RK9*6E( LAJT015W5OT\]ELUDO+<(QWASAWH^G>?I7/+J)NUPI+T2C+9F3!2-N6O730'-TM>2>
M'"VYER2T:+/(-?F!J(D.S*II)&$1:&ONMN8V"V8?'IM%ME.6MQ3>4GA);L,4
MWMRGZB8>WU(I/_]!8JS DTZ:KI%09:LI6X<8BF*M2Z<0G8