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1 CategoryCode
1.1 \catcode ¸í·É
2 CategoryCodeÀÇ »ç¿ë
2.1 \makeatletter, \makeatother
2.2 CategoryCode ¿¹Á¦

1 CategoryCode

TeX ¼³°è»óÀÇ Æ¯Â¡ ÁßÀÇ Çϳª·Î¼­, ÀԷµǴ ¸ðµç ¹ÙÀÌÆ®¸¦ 16°¡ÁöÀÇ Category·Î ±¸ºÐÇÏ¿© ó¸®ÇÏ´Â °ÍÀÌ´Ù. default´Â ´ÙÀ½°ú °°´Ù.

Category ¼³¸í ±âÁ¤°ª
0 escape character \
1 ±×·ì ¿­±â {
2 ±×·ì ´Ý±â }
3 ¼öÇиðµå Àüȯ $
4 Á¤·Ä ÅÇ &
5 Çೡ <Return>, ^^M(ASCII return)
6 parameter #
7 À­Ã·ÀÚ ^, ^^K
8 ¾Æ·§Ã·ÀÚ _, ^^A
9 ignored character NUL, ^^@ (ASCII null)
10 ½ºÆäÀ̽º $$\verb*| |$$ , ^^I(ASCII horizontal tab)
11 ±ÛÀÚ(letter) A..Z, a..z
12 ±âŸ¹®ÀÚ ³ª¸ÓÁö ¸ðµÎ
13 active character ~, ^^L(ASCII form feed)
14 Ä¿¸àÆ® ¹®ÀÚ %
15 invalid character DEL, ^^J(ASCII delete)

  • letter¸¦ ±ÛÀÚ, character¸¦ ¹®ÀÚ¶ó°í ¹ø¿ª

1.1 \catcode ¸í·É

ƯÁ¤ÇÑ ¹®ÀÚÀÇ CategoryCode¸¦ º¯°æÇÏ·Á¸é \catcode¸¦ ¾´´Ù. ¿¹ÄÁ´ë
\catcode`\[=1
\catcode`\]=2

2 CategoryCodeÀÇ »ç¿ë

2.1 \makeatletter, \makeatother

LaTeX¿¡¼­ ÈçÈ÷ ¾²ÀÌ´Â ¸í·ÉÀ¸·Î \makeatletter¿Í \makeatother°¡ ÀÖ´Ù.

TeXÀº ±× ¼³°è»ó ¸ðµç ControlSequences°¡ ¿øÄ¢ÀûÀ¸·Î ¹®ÀÚ(letter = catcode 11)·Î ÀÌ·ç¾îÁöµµ·Ï ¾à¼ÓµÇ¾î ÀÖ´Ù. ±×·±µ¥ LaTeXÀÇ ¼³°èÀÚµéÀº @¹®ÀÚ(at-¹®ÀÚ)µµ ControlSequences¿¡¼­ »ç¿ëÇÏ°í ½Í¾îÇß´Ù.

@¹®ÀÚ´Â ¿ø·¡ ±âŸ¹®ÀÚ(other characters = catcode 12)¿¡ ÇØ´çÇÏ´Â °ÍÀÌ´Ù. ±×·¯¹Ç·Î ±× ÀÚü·Î´Â ControlSequences¿¡ »ç¿ëµÉ ¼ö ¾ø´Ù. ÀÌ ¹®ÀÚ¿¡ CategoryCode 11À» ÇÒ´çÇÏ¿© ¸¶Ä¡ ¹®ÀÚ(letter)ÀÎ °Íó·³ Ãë±ÞÇ϶ó´Â ¸í·ÉÀÌ \makeatletterÀÌ´Ù. \makeatletter ¸í·ÉÀ» Áö½ÃÇÑ ÀÌÈķδ @¹®ÀÚÀÇ catcode´Â 11ÀÌ µÇ¾î ´Ù¸¥ ¹®ÀÚµé°ú ÇÔ²² ¸í·É(ControlSequences)ÀÇ ÀϺηΠ¾²ÀÏ ¼ö ÀÖ´Ù.

¹Ý¸é, @¹®ÀÚ¸¦ ¿ø·¡ÀÇ »ç¿ë¹ýÀ¸·Î µÇµ¹·ÁÁÖ·Á¸é CategoryCode¸¦ 12·Î ¼³Á¤ÇØ¾ß ÇÑ´Ù. ÀÌ°ÍÀÌ \makeatotherÀÌ´Ù. letter³ª other´Â catcode 11, 12¸¦ °¢°¢ ÁöĪÇÏ´Â ¸»ÀÌ´Ù.
\def\makeatletter{\catcode`\@11\relax}
\def\makeatother{\catcode`\@12\relax}
(!) @¹®ÀÚ´Â Tabularȯ°æ¿¡¼­´Â Ưº°ÇÑ Àǹ̸¦ °®´Â´Ù. ÀÌ¿¡ ´ëÇؼ­´Â Tabularȯ°æ ÂüÁ¶.

@¹®ÀÚ¸¦ Æ÷ÇÔÇÏ´Â ControlSequences´Â LaTeX ¹®¼­ÀÇ º»¹®¿¡¼­ ¾²·Á¸é \makeatletter, \makeatother¸¦ ÁöÁ¤Çؾ߸¸ ÇÑ´Ù. ÀÌ Á¡À» ÀÌ¿ëÇÏ¸é »ç¿ëÀÚ¿Í Á÷Á¢ ÀÎÅÍÆäÀ̽ºÇÏ´Â ¸í·ÉÀÌ ¾Æ´Ñ, ¾î¶² ÇÔ¼öÀÇ ³»ºÎ ¸í·ÉÀ¸·Î »ç¿ëµÇ´Â °ÍÀÓÀ» º¸´Ù ºÐ¸íÇÏ°Ô (½Ã°¢ÀûÀ¸·Î) º¸¿©ÁÙ ¼ö ÀÖ´Ù´Â ÀåÁ¡ÀÌ ÀÖ´Ù. Áï, @¹®ÀÚ°¡ »ç¿ëµÈ ¸í·ÉÀº ´ëºÎºÐ ½ºÅ¸ÀÏÀ̳ª Ŭ·¡½ºÀÇ ³»ºÎ¸í·ÉµéÀÌ´Ù. È®Àå¸íÀÌ .styÀÎ ½ºÅ¸ÀÏ°ú .clsÀΠŬ·¡½º ÆÄÀÏÀº º°µµ·Î \makeatletter¸¦ Áö½ÃÇÏÁö ¾Ê¾Æµµ ±× ÆÄÀÏÀÇ ¹üÀ§ ¾È¿¡¼­ @ ¹®ÀÚ¸¦ ControlSequencesÀÇ ÀϺηΠÀνÄÇÑ´Ù.

2.2 CategoryCode ¿¹Á¦

CTAN¿¡µµ ÀÖ´Â °ÍÀ¸·Î, ¿¹Àü¿¡ comp.text.tex¿¡ ¿Ã¶ó¿Ô´ø Àç¹ÌÀÖ´Â ¿¹Á¦.
\let~\catcode~`76~`A13~`F1~`j00~`P2jdefA71F~`7113jdefPALLF
PA''FwPA;;FPAZZFLaLPA//71F71iPAHHFLPAzzFenPASSFthP;A$$FevP
A@@FfPARR717273F737271P;ADDFRgniPAWW71FPATTFvePA**FstRsamP
AGGFRruoPAqq71.72.F717271PAYY7172F727171PA??Fi*LmPA&&71jfi
Fjfi71PAVVFjbigskipRPWGAUU71727374 75,76Fjpar71727375Djifx
:76jelse&U76jfiPLAKK7172F71l7271PAXX71FVLnOSeL71SLRyadR@oL
RrhC?yLRurtKFeLPFovPgaTLtReRomL;PABB71 72,73:Fjif.73.jelse
B73:jfiXF71PU71 72,73:PWs;AMM71F71diPAJJFRdriPAQQFRsreLPAI
I71Fo71dPA!!FRgiePBt'el@ lTLqdrYmu.Q.,Ke;vz vzLqpip.Q.,tz;
;Lql.IrsZ.eap,qn.i. i.eLlMaesLdRcna,;!;h htLqm.MRasZ.ilk,%
s$;z zLqs'.ansZ.Ymi,/sx ;LYegseZRyal,@i;@ TLRlogdLrDsW,@;G
LcYlaDLbJsW,SWXJW ree @rzchLhzsW,;WERcesInW qt.'oL.Rtrul;e
doTsW,Wk;Rri@stW aHAHHFndZPpqar.tridgeLinZpe.LtYer.W,:jbye
<!> latexÀÌ ¾Æ´Ï¶ó texÀ» ½ÇÇàÇØ¾ß ÇÕ´Ï´Ù.



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