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+%D \module
+%D [ file=catc-def,
+%D version=2006.09.18,
+%D title=\CONTEXT\ Catcode Macros,
+%D subtitle=Default Tables,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+%D The following catcode tables are rather \CONTEXT\ independent.
+
+\ifdefined\nilcatcodes \else \newcatcodetable \nilcatcodes \fi
+\ifdefined\texcatcodes \else \newcatcodetable \texcatcodes \fi
+\ifdefined\luacatcodes \else \newcatcodetable \luacatcodes \fi
+\ifdefined\notcatcodes \else \newcatcodetable \notcatcodes \fi
+\ifdefined\vrbcatcodes \else \newcatcodetable \vrbcatcodes \fi
+\ifdefined\prtcatcodes \else \newcatcodetable \prtcatcodes \fi
+
+\startcatcodetable \nilcatcodes
+ \catcode`\^^I = 10 % ascii tab is a blank space
+ \catcode`\^^M = 5 % ascii return is end-line
+ \catcode`\^^L = 5 % ascii form-feed
+ \catcode`\ = 10 % ascii space is blank space
+ \catcode`\^^Z = 9 % ascii eof is ignored
+\stopcatcodetable
+
+\startcatcodetable \texcatcodes
+ \catcode`\^^I = 10
+ \catcode`\^^M = 5
+ \catcode`\^^L = 5
+ \catcode`\ = 10
+ \catcode`\^^Z = 9
+ \catcode`\\ = 0
+ \catcode`\{ = 1
+ \catcode`\} = 2
+ \catcode`\$ = 3
+ \catcode`\& = 4
+ \catcode`\# = 6
+ \catcode`\^ = 7
+ \catcode`\_ = 8
+ \catcode`\% = 14
+\stopcatcodetable
+
+\startcatcodetable \luacatcodes
+ \catcode`\^^I = 12 % ascii tab is a blank space
+ \catcode`\^^M = 12 % ascii return is end-line
+ \catcode`\^^L = 12 % ascii form-feed
+ \catcode`\ = 12 % ascii space is blank space
+ \catcode`\^^Z = 9 % ascii eof is ignored
+ \catcode`\\ = 0
+ \catcode`\% = 12
+ \catcode`\# = 12
+ \catcode`\_ = 12
+ \catcode`\^ = 12
+ \catcode`\& = 12
+ \catcode`\| = 12
+ \catcode`\{ = 12
+ \catcode`\} = 12
+ \catcode`\~ = 12
+ \catcode`\$ = 12
+\stopcatcodetable
+
+\startcatcodetable \notcatcodes
+ \catcode`\^^I = 10 % ascii tab is a blank space
+ \catcode`\^^M = 5 % ascii return is end-line
+ \catcode`\^^L = 5 % ascii form-feed
+ \catcode`\ = 10 % ascii space is blank space
+ \catcode`\^^Z = 9 % ascii eof is ignored
+ \catcode`\~ = 12
+ \catcode`\# = 12 % probably too much, in principle
+ \catcode`\$ = 12 % nilcatcodes would be ok too
+ \catcode`\% = 12
+ \catcode`\^ = 12
+ \catcode`\& = 12
+ \catcode`\_ = 12
+ \catcode`\< = 12
+ \catcode`\> = 12
+ \catcode`\{ = 12
+ \catcode`\} = 12
+ \catcode`\" = 12
+ \catcode`\' = 12
+ \catcode`\/ = 12
+ \catcode`\\ = 12
+ \catcode`\| = 12
+\stopcatcodetable
+
+\startcatcodetable \vrbcatcodes % probably less needed
+ \catcode`\^^I = 12
+ \catcode`\^^M = 12
+ \catcode`\^^L = 12
+ \catcode`\ = 12
+ \catcode`\^^Z = 12
+\stopcatcodetable
+
+\startcatcodetable \prtcatcodes
+ \catcode`\^^I = 10
+ \catcode`\^^M = 5
+ \catcode`\^^L = 5
+ \catcode`\ = 10
+ \catcode`\^^Z = 9
+ \catcode`\\ = 0
+ \catcode`\{ = 1
+ \catcode`\} = 2
+ \catcode`\$ = 3
+ \catcode`\& = 4
+ \catcode`\# = 6
+ \catcode`\^ = 7
+ \catcode`\_ = 8
+ \catcode`\% = 14
+ \catcode`\@ = 11
+ \catcode`\! = 11
+ \catcode`\? = 11
+ \catcode`\~ = 13
+ \catcode`\| = 13
+\stopcatcodetable
+
+%D Because some characters have a special meaning, we provide
+%D shortcuts to their character representation.
+
+\chardef\%=`\%
+\chardef\&=`\&
+\chardef\#=`\#
+\chardef\$=`\$
+\chardef\{=`\{
+\chardef\}=`\}
+\chardef\\=`\\
+\chardef\^=`\^
+\chardef\_=`\_ % but way too wide in lm, so ... until that's fixed:
+
+%def\_{\leavevmode \kern.06em \vbox{\hrule width.3em}}
+\def\_{\dontleavehmode \kern.06em \vbox{\hrule width.3em}}
+
+%D From now on we can use the protection mechanisms.
+
+\def\unprotect {\pushcatcodetable\setcatcodetable\prtcatcodes}
+\def\protect {\popcatcodetable}
+
+\endinput