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Diffstat (limited to 'tex/context/base/mkiv/mult-ini.mkiv')
| -rw-r--r-- | tex/context/base/mkiv/mult-ini.mkiv | 447 |
1 files changed, 204 insertions, 243 deletions
diff --git a/tex/context/base/mkiv/mult-ini.mkiv b/tex/context/base/mkiv/mult-ini.mkiv index 288d19271..d66749d14 100644 --- a/tex/context/base/mkiv/mult-ini.mkiv +++ b/tex/context/base/mkiv/mult-ini.mkiv @@ -11,9 +11,9 @@ %C therefore copyrighted by \PRAGMA. See mreadme.pdf for %C details. -%D This module is a stripped down version of \type {mult-ini.tex}, -%D which we keep around as \type {mult-kep.tex} for sentimental -%D reasons. There you will find some more historic information. +%D This module is a stripped down version of \type {mult-ini.tex}, which we keep +%D around as \type {mult-kep.tex} for sentimental reasons. There you will find some +%D more historic information. \writestatus{loading}{ConTeXt Multilingual Macros / Initialization} @@ -25,13 +25,11 @@ %D [constanten,variabelen,commands] %D {v!,c!,k!,s!,e!,m!,l!,r!,f!,p!,x!,y!} %D -%D In the system modules we introduced some prefixed constants, -%D variables (both macros) and registers. Apart from a -%D tremendous saving in terms of memory and a gain in speed we -%D use from now on prefixes when possible for just another -%D reason: consistency and multi||linguality. Systematically -%D using prefixed macros enables us to implement a -%D multi||lingual user interface. Redefining these next set of +%D In the system modules we introduced some prefixed constants, variables (both +%D macros) and registers. Apart from a tremendous saving in terms of memory and a +%D gain in speed we use from now on prefixes when possible for just another reason: +%D consistency and multi||linguality. Systematically using prefixed macros enables +%D us to implement a multi||lingual user interface. Redefining these next set of %D prefixes therefore can have desastrous results. %D %D \startlinecorrection @@ -50,9 +48,9 @@ %D \stoptable %D \stoplinecorrection %D -%D In the single||lingual version we used \type{!}, \type{!!}, -%D \type{!!!} and \type{!!!!}. In the meantime some of these -%D are obsolete (we had some 12 originally). +%D In the single||lingual version we used \type {!}, \type {!!}, \type {!!!} and +%D \type {!!!!}. In the meantime some of these are obsolete (we had some 12 +%D originally). \def\c!prefix!{c!} \def\k!prefix!{k!} @@ -66,18 +64,16 @@ %D [constants,variables,commands] %D {@@,??} %D -%D Variables generated by the system can be recognized on their -%D prefix \type{@@}. They are composed of a command (class) -%D specific tag, which can be recognized on \type{??}, and a -%D system constant, which has the prefix \type{c!}. We'll se -%D some more of this. +%D Variables generated by the system can be recognized on their prefix \type {@@}. +%D They are composed of a command (class) specific tag, which can be recognized on +%D \type {??}, and a system constant, which has the prefix \type {c!}. We'll se some +%D more of this. \def\??prefix {??} \def\@@prefix {@@} -%D Just to be complete we repeat some of the already defined -%D system constants here. Maybe their prefix \type{\s!} now -%D falls into place. +%D Just to be complete we repeat some of the already defined system constants here. +%D Maybe their prefix \type {\s!} now falls into place. \def\s!next {next} \def\s!default {default} \def\s!dummy {dummy} \def\s!unknown {unknown} @@ -90,26 +86,24 @@ \def\s!true {true} \def\s!false {false} -%D The word \type{height} takes 6~token memory cells. The -%D control sequence \type{\height} on the other hand uses only -%D one. Knowing this, we can improve the performance of \TEX, -%D both is terms of speed and memory usage, by using control +%D The word \type {height} takes 6~token memory cells. The control sequence \type +%D {\height} on the other hand uses only one. Knowing this, we can improve the +%D performance of \TEX, both is terms of speed and memory usage, by using control %D sequences instead of the words written in full. %D -%D Where in the \ASCII\ file the second lines takes nine extra -%D characters, \TEX\ saves us 13~tokens. +%D Where in the \ASCII\ file the second lines takes nine extra characters, \TEX\ +%D saves us 13~tokens. %D %D \starttyping %D \hrule width 10pt height 2pt depth 1pt %D \hrule \s!width 10pt \s!height 2pt \s!depth 1pt %D \stoptyping %D -%D One condition is that we have defined \type {\s!height}, -%D \type {\s!width} and \type {\s!depth} as respectively -%D \type {height}, \type {width} and \type {depth}. Using this -%D scheme therefore only makes sense when a token sequence is -%D used more than once. Savings like this should of course be -%D implemented in english, just because \TEX\ is english. +%D One condition is that we have defined \type {\s!height}, \type {\s!width} and +%D \type {\s!depth} as respectively \type {height}, \type {width} and \type {depth}. +%D Using this scheme therefore only makes sense when a token sequence is used more +%D than once. Savings like this should of course be implemented in english, just +%D because \TEX\ is english. \def\s!width {width} \let\!!width \s!width % obsolete \def\s!height{height} \let\!!height\s!height % obsolete @@ -142,19 +136,16 @@ %D definemessageconstant, %D definefileconstant} %D -%D The first part of this module is dedicated to dealing with -%D multi||lingual constants and variables. When \CONTEXT\ grew -%D bigger and bigger in terms of bytes and used string space, -%D we switched to predefined constants. At the cost of more -%D hash table entries, the macros not only becase more compact, -%D they became much faster too. Maybe an even bigger advantage -%D was that mispelling could no longer lead to problems. Even a -%D multi||lingual interface became possible. +%D The first part of this module is dedicated to dealing with multi||lingual +%D constants and variables. When \CONTEXT\ grew bigger and bigger in terms of bytes +%D and used string space, we switched to predefined constants. At the cost of more +%D hash table entries, the macros not only becase more compact, they became much +%D faster too. Maybe an even bigger advantage was that mispelling could no longer +%D lead to problems. Even a multi||lingual interface became possible. %D -%D Constants --- we'll introduce the concept of variables later -%D on --- are preceded by a type specific prefix, followed by a -%D \type{!}. To force consistency, we provide a few commands -%D for defining such constants. +%D Constants |<|we'll introduce the concept of variables later on|>| are preceded by +%D a type specific prefix, followed by a \type {!}. To force consistency, we provide +%D a few commands for defining such constants. %D %D \starttyping %D \defineinterfaceconstant {name} {meaning} @@ -192,10 +183,9 @@ \unexpanded\def\definesystemconstant #1{\expandafter\def\csname\s!prefix!#1\endcsname{#1}} \unexpanded\def\definemessageconstant #1{\expandafter\def\csname\m!prefix!#1\endcsname{#1}} -%D In a parameter driven system, some parameters are shared -%D by more system components. In \CONTEXT\ we can distinguish -%D parameters by a unique prefix. Such a prefix is defined -%D with: +%D In a parameter driven system, some parameters are shared by more system +%D components. In \CONTEXT\ we can distinguish parameters by a unique prefix. Such a +%D prefix is defined with: %D %D \starttyping %D \definesystemvariable {name} @@ -209,16 +199,14 @@ %D {selectinterface, %D defaultinterface, currentinterface, currentresponses} %D -%D With \type{\selectinterface} we specify the language we are -%D going to use. The system asks for the language wanted, and -%D defaults to \type{\currentinterface} when we just give -%D \type{enter}. By default the message system uses the -%D current interface language, but \type{\currentresponses} -%D can specify another language too. +%D With \type {\selectinterface} we specify the language we are going to use. The +%D system asks for the language wanted, and defaults to \type {\currentinterface} +%D when we just give \type {enter}. By default the message system uses the current +%D interface language, but \type {\currentresponses} can specify another language +%D too. %D -%D Because we want to generate formats directly too, we do -%D not ask for interface specifications when these are already -%D defined (like in cont-nl.tex and alike). +%D Because we want to generate formats directly too, we do not ask for interface +%D specifications when these are already defined (like in cont-nl.tex and alike). \ifdefined\defaultinterface @@ -257,9 +245,8 @@ %D \macros %D {startinterface} %D -%D Sometimes we want to define things only for specific -%D interface languages. This can be done by means of the -%D selector: +%D Sometimes we want to define things only for specific interface languages. This +%D can be done by means of the selector: %D %D \starttyping %D \startinterface language @@ -273,24 +260,22 @@ {\doifnot{#1}{all}{\doifnotinset\currentinterface{#1}{\gobbleuntil\stopinterface}}} \let\stopinterface\relax - + %D \macros %D {startmessages, %D getmessage, %D showmessage, %D makemessage} %D -%D A package as large as \CONTEXT\ can hardly function without -%D a decent message mechanism. Due to its multi||lingual -%D interface, the message subsystem has to be multi||lingual -%D too. A major drawback of this feature is that we have to -%D code messages. As a result, the source becomes less self -%D documented. On the other hand, consistency will improve. +%D A package as large as \CONTEXT\ can hardly function without a decent message +%D mechanism. Due to its multi||lingual interface, the message subsystem has to be +%D multi||lingual too. A major drawback of this feature is that we have to code +%D messages. As a result, the source becomes less self documented. On the other +%D hand, consistency will improve. %D -%D Because the overhead in terms of entries in the (already -%D exhausted) hash table has to be minimal, messages are packed -%D in libraries. We can extract a message from such a library -%D in three ways: +%D Because the overhead in terms of entries in the (already exhausted) hash table +%D has to be minimal, messages are packed in libraries. We can extract a message +%D from such a library in three ways: %D %D \starttyping %D \getmessage {library} {tag} @@ -298,13 +283,11 @@ %D \makemessage {library} {tag} {data} %D \stoptyping %D -%D The first command gets the message \type{tag} from the -%D \type{library} specified. The other commands take an extra -%D argument: a list of items to be inserted in the message -%D text. While \type{\showmessage} shows the message at the -%D terminal, the other commands generate the message as text. -%D Before we explain the \type{data} argument, we give an -%D example of a library. +%D The first command gets the message \type {tag} from the \type {library} +%D specified. The other commands take an extra argument: a list of items to be +%D inserted in the message text. While \type {\showmessage} shows the message at the +%D terminal, the other commands generate the message as text. Before we explain the +%D \type {data} argument, we give an example of a library. %D %D \starttyping %D \startmessages english library: alfa @@ -332,12 +315,11 @@ %D something : second (and last) message to you %D \stoptyping %D -%D As we can see, the title entry is shown with the message. -%D The data fields are comma separated and are specified in the -%D message text by \type{--}. +%D As we can see, the title entry is shown with the message. The data fields are +%D comma separated and are specified in the message text by \type {--}. %D -%D It is not required to define all messages in a library at -%D once. We can add messages to a library in the following way: +%D It is not required to define all messages in a library at once. We can add +%D messages to a library in the following way: %D %D \starttyping %D \startmessages english library: alfa @@ -345,21 +327,17 @@ %D \stopmessages %D \stoptyping %D -%D Because such definitions can take place in different -%D modules, the system gives a warning when a tag occurs more -%D than once. The first occurrence takes preference over later -%D ones, so we had better use a save offset, as shown in the -%D example. As we can see, the title field is specified only -%D the first time! +%D Because such definitions can take place in different modules, the system gives a +%D warning when a tag occurs more than once. The first occurrence takes preference +%D over later ones, so we had better use a save offset, as shown in the example. As +%D we can see, the title field is specified only the first time! %D -%D Because we want to check for duplicate tags, the macros -%D are a bit more complicated than neccessary. The \NEWLINE\ -%D token is used as message separator. +%D Because we want to check for duplicate tags, the macros are a bit more +%D complicated than neccessary. The \NEWLINE\ token is used as message separator. +%D +%D For internal purposes one can use \type {\setmessagetext}, which puts the message +%D text asked for in \type {\currentmessagetext}. %D -%D For internal purposes one can use \type {\setmessagetext}, -%D which puts the message text asked for in \type -%D {\currentmessagetext}. - %D These will become obsolete: \unexpanded\def\startmessages #1 library: #2 % @@ -399,17 +377,16 @@ %D \macros %D {ifshowwarnings, ifshowmessages} %D -%D Sometimes displaying message can slow down processing -%D considerably. We therefore introduce warnings. Users can -%D turn of warnings and messages by saying: +%D Sometimes displaying message can slow down processing considerably. We therefore +%D introduce warnings. Users can turn of warnings and messages by saying: %D %D \starttyping %D \showwarningstrue %D \showmessagestrue %D \stoptyping %D -%D Turning off messages also turns off warnings, which is -%D quote logical because they are less important. +%D Turning off messages also turns off warnings, which is quote logical because they +%D are less important. % not yet mkiv @@ -435,13 +412,12 @@ %D \macros %D {dosetvalue,dosetevalue,dosetgvalue,dosetxvalue,docopyvalue,doresetvalue} % dogetvalue %D -%D We already defined these auxiliary macros in the system -%D modules. Starting with this module however, we have to take -%D multi||linguality a bit more serious. - -%D In due time, when we exclusively use the parameter handler code, we can drop -%D the backmapping (\type{\c!k...}) and make \type {\c!c...} similar to -%D \type {\v!...}. In that case we can simply the following setters. +%D We already defined these auxiliary macros in the system modules. Starting with +%D this module however, we have to take multi||linguality a bit more serious. +%D +%D In due time, when we exclusively use the parameter handler code, we can drop the +%D backmapping (\type{\c!k...}) and make \type {\c!c...} similar to \type {\v!...}. +%D In that case we can simply the following setters. \unexpanded\def\doletvalue #1#2{\expandafter\let \csname#1\ifcsname\k!prefix!#2\endcsname\csname\k!prefix!#2\endcsname\else#2\fi\endcsname} \unexpanded\def\dosetvalue #1#2{\expandafter\def \csname#1\ifcsname\k!prefix!#2\endcsname\csname\k!prefix!#2\endcsname\else#2\fi\endcsname} @@ -476,16 +452,16 @@ \stopinterface -%D We can now redefine some messages that will be -%D introduced in the multi||lingual system module. +%D We can now redefine some messages that will be introduced in the multi||lingual +%D system module. \unexpanded\def\showassignerror #1#2{\showmessage\m!check1{#1,#2}\waitonfatalerror} \unexpanded\def\showargumenterror#1#2{\showmessage\m!check2{#1,#2}\waitonfatalerror} \unexpanded\def\showdefinederror #1#2{\showmessage\m!check3{#1,#2}\waitonfatalerror} -%D \CONTEXT\ is a parameter driven package. This means that -%D users instruct the system by means of variables, values and -%D keywords. These instructions take the form: +%D \CONTEXT\ is a parameter driven package. This means that users instruct the +%D system by means of variables, values and keywords. These instructions take the +%D form: %D %D \starttyping %D \setupsomething[some variable=some value, another one=a keyword] @@ -497,13 +473,11 @@ %D \dosomething[this way,that way,no way] %D \stoptyping %D -%D Because the same variables can occur in more than one setup -%D command, we have to be able to distinguish them. This is -%D achieved by assigning them a unique prefix. +%D Because the same variables can occur in more than one setup command, we have to +%D be able to distinguish them. This is achieved by assigning them a unique prefix. %D -%D Imagine a setup command for boxed text, that enables us to -%D specify the height and width of the box. Behide the scenes -%D the command +%D Imagine a setup command for boxed text, that enables us to specify the height and +%D width of the box. Behide the scenes the command %D %D \starttyping %D \setupbox [width=12cm, height=3cm] @@ -517,16 +491,16 @@ %D \stoptyping %D %D while a similar command for specifying the page dimensions -%D of an \cap{A4} page results in: +%D of an \cap {A4} page results in: %D %D \starttyping %D \<page><width> {21.0cm} %D \<page><height> {27.9cm} %D \stoptyping %D -%D The prefixes \type{<box>} and \type{<page>} are hidden from -%D users and can therefore be language independant. Variables -%D on the other hand, differ for each language: +%D The prefixes \type {<box>} and \type {<page>} are hidden from users and can +%D therefore be language independant. Variables on the other hand, differ for each +%D language: %D %D \starttyping %D \<box><color> {<blue>} @@ -534,28 +508,24 @@ %D \<box><couleur> {<blue>} %D \stoptyping %D -%D In this example we can see that the assigned values or -%D keywords are language dependant too. This will be a -%D complication when defining multi||lingual setup files. +%D In this example we can see that the assigned values or keywords are language +%D dependant too. This will be a complication when defining multi||lingual setup +%D files. %D -%D A third phenomena is that variables and values can have a -%D similar meaning. +%D A third phenomena is that variables and values can have a similar meaning. %D %D \starttyping %D \<pagenumber><location> {<left>} %D \<skip><left> {12cm} %D \stoptyping %D -%D A (minor) complication is that where in english we use -%D \type{<left>}, in dutch we find both \type{<links>} and -%D \type{<linker>}. This means that when we use some sort of -%D translation table, we have to distinguish between the -%D variables at the left side and the fixed values at the -%D right. +%D A (minor) complication is that where in english we use \type {<left>}, in dutch +%D we find both \type {<links>} and \type {<linker>}. This means that when we use +%D some sort of translation table, we have to distinguish between the variables at +%D the left side and the fixed values at the right. %D -%D The same goes for commands that are composed of different -%D user supplied and/or language specific elements. In english -%D we can use: +%D The same goes for commands that are composed of different user supplied and/or +%D language specific elements. In english we can use: %D %D \starttyping %D \<empty><figure> @@ -569,14 +539,13 @@ %D \<leeg><intermezzo> %D \stoptyping %D -%D These subtle differences automatically lead to a solution -%D where variables, values, elements and other components have -%D a similar logical name (used in macro's) but a different -%D meaning (supplied by the user). +%D These subtle differences automatically lead to a solution where variables, +%D values, elements and other components have a similar logical name (used in +%D macro's) but a different meaning (supplied by the user). %D -%D Our solution is one in which the whole system is programmed -%D in terms of identifiers with language specific meanings. In -%D such an implementation, each fixed variable is available as: +%D Our solution is one in which the whole system is programmed in terms of +%D identifiers with language specific meanings. In such an implementation, each +%D fixed variable is available as: %D %D \starttyping %D \<prefix><variable> @@ -594,75 +563,66 @@ %D \def\boxwidth{12cm} %D \stoptyping %D -%D because we don't want to recode the source, a setup command -%D in another language has to expand to this variable, so: +%D because we don't want to recode the source, a setup command in another language +%D has to expand to this variable, so: %D %D \starttyping %D \setupblock[width=12cm] %D \stoptyping %D -%D has to result in the definition of \type{\boxwidth} too. -%D This method enables us to build compact, fast and readable -%D code. +%D has to result in the definition of \type {\boxwidth} too. This method enables us +%D to build compact, fast and readable code. %D -%D An alternative method, which we considered using, uses a -%D more indirect way. In this case, both calls generate a -%D different variable: +%D An alternative method, which we considered using, uses a more indirect way. In +%D this case, both calls generate a different variable: %D %D \starttyping %D \def\boxwidth {12cm} %D \def\boxbreedte {12cm} %D \stoptyping %D -%D And because we don't want to recode those megabytes of -%D already developed code, this variable has to be called with -%D something like: +%D And because we don't want to recode those megabytes of already developed code, +%D this variable has to be called with something like: %D %D \starttyping %D \valueof\box\width %D \stoptyping %D -%D where \type{\valueof} takes care of the translation of -%D \type{width} or \type{breedte} to \type{width} and -%D combining this with \type{box} to \type{\boxwidth}. +%D where \type {\valueof} takes care of the translation of \type {width} or \type +%D {breedte} to \type {width} and combining this with \type {box} to \type +%D {\boxwidth}. %D -%D One advantage of this other scheme is that, within certain -%D limits, we can implement an interface that can be switched -%D to another language at will, while the current approach -%D fixes the interface at startup. There are, by the way, -%D other reasons too for not choosing this scheme. Switching -%D user generated commands is for instance impossible and a -%D dual interface would therefore give a strange mix of -%D languages. +%D One advantage of this other scheme is that, within certain limits, we can +%D implement an interface that can be switched to another language at will, while +%D the current approach fixes the interface at startup. There are, by the way, other +%D reasons too for not choosing this scheme. Switching user generated commands is +%D for instance impossible and a dual interface would therefore give a strange mix +%D of languages. %D -%D Now let's work out the first scheme. Although the left hand -%D of the assignment is a variable from the users point of -%D view, it is a constant in terms of the system. Both -%D \type{width} and \type{breedte} expand to \type{width} -%D because in the source we only encounter \type{width}. Such -%D system constants are presented as +%D Now let's work out the first scheme. Although the left hand of the assignment is +%D a variable from the users point of view, it is a constant in terms of the system. +%D Both \type {width} and \type {breedte} expand to \type {width} because in the +%D source we only encounter \type {width}. Such system constants are presented as %D %D \starttyping %D \c!width %D \stoptyping %D -%D This constant is always equivalent to \type{width}. As we -%D can see, we use \type{c!} to mark this one as constant. Its -%D dutch counterpart is: +%D This constant is always equivalent to \type {width}. As we can see, we use \type +%D {c!} to mark this one as constant. Its dutch counterpart is: %D %D \starttyping %D breedte %D \stoptyping %D -%D When we interpret a setup command each variable is -%D translated to it's \type{c!} counterpart. This means that -%D \type{breedte} and \type{width} expand to \type{breedte} -%D and \type{\c!width} which both expand to \type{width}. That -%D way user variables become system constants. +%D When we interpret a setup command each variable is translated to it's \type{c!} +%D counterpart. This means that \type {breedte} and \type{width} expand to \type +%D {breedte} and \type {\c!width} which both expand to \type {width}. That way user +%D variables become system constants. %D -%D The interpretation is done by means of a general setup -%D command \type{\getparameters} that we introduced in the -%D system module. Let us define some simple setup command: +%D The interpretation is done by means of a general setup command \type +%D {\getparameters} that we introduced in the system module. Let us define some +%D simple setup command: %D %D \starttyping %D \unexpanded\def\setupbox[#1]% @@ -675,27 +635,25 @@ %D \setupbox [width=3cm, height=1cm] %D \stoptyping %D -%D Afterwards we have two variables \type{\@@bxwidth} and -%D \type{\@@bxheight} which have the values \type{3cm} and -%D \type{1cm} assigned. These variables are a combinatiom of -%D the setup prefix \type{\??bx}, which expands to \type{@@bx} -%D and the translated user supplied variables \type{width} and -%D \type{height} or \type{breedte} and \type{hoogte}, -%D depending on the actual language. In dutch we just say: +%D Afterwards we have two variables \type {\@@bxwidth} and \type {\@@bxheight} which +%D have the values \type {3cm} and \type {1cm} assigned. These variables are a +%D combinatiom of the setup prefix \type {\??bx}, which expands to \type {@@bx} and +%D the translated user supplied variables \type {width} and \type {height} or \type +%D {breedte} and \type {hoogte}, depending on the actual language. In dutch we just +%D say: %D %D \starttyping %D \stelblokin [breedte=3cm,hoogte=1cm] %D \stoptyping %D -%D and get ourselves \type{\@@bxwidth} and \type{\@@bxheight} -%D too. In the source of \CONTEXT, we can recognize constants -%D and variables on their leading \type{c!}, \type{v!} etc., -%D prefixes on \type{??} and composed variables on \type{@@}. +%D and get ourselves \type {\@@bxwidth} and \type {\@@bxheight} too. In the source +%D of \CONTEXT, we can recognize constants and variables on their leading \type +%D {c!}, \type {v!} etc., prefixes on \type {??} and composed variables on \type +%D {@@}. %D -%D We already saw that user supplied keywords need some -%D special treatment too. This time we don't translate the -%D keyword, but instead use in the source a variable which -%D meaning depends on the interface language. +%D We already saw that user supplied keywords need some special treatment too. This +%D time we don't translate the keyword, but instead use in the source a variable +%D which meaning depends on the interface language. %D %D \starttyping %D \v!left @@ -711,16 +669,14 @@ %D \v!right=>\dosomethingontheright] %D \stoptyping %D -%D Because variables like \type{\@@bxlocation} can have a lot -%D of meanings, including tricky expandable tokens, we cannot -%D translate this meaning when we compare. This means that -%D \type{\@@bxlocation} can be \type{left} of \type{links} of -%D whatever meaning suits the language. But because -%D \type{\v!left} also has a meaning that suits the language, -%D we are able to compare. +%D Because variables like \type {\@@bxlocation} can have a lot of meanings, +%D including tricky expandable tokens, we cannot translate this meaning when we +%D compare. This means that \type {\@@bxlocation} can be \type {left} of \type +%D {links} of whatever meaning suits the language. But because \type {\v!left} also +%D has a meaning that suits the language, we are able to compare. %D -%D Although we know it sounds confusing we want to state two -%D important characteristics of the interface as described: +%D Although we know it sounds confusing we want to state two important +%D characteristics of the interface as described: %D %D \startnarrower \em %D user variables become system constants @@ -731,11 +687,10 @@ %D \startnarrower \em %D user constants (keywords) become system variables %D \stopnarrower - -%D The \type {\c!internal} is a left over from the time that -%D the user interface documents were not using a specification -%D alongside a keyword specification but used a shared file in -%D which case we need to go in both directions. +%D +%D The \type {\c!internal} is a left over from the time that the user interface +%D documents were not using a specification alongside a keyword specification but +%D used a shared file in which case we need to go in both directions. % temporary mkiv hack (we can best just store the whole table in memory) @@ -750,10 +705,9 @@ %D \macros %D {defineinterfaceconstant} %D -%D Next we redefine a previously defined macro to take care of -%D interface translation too. It's a bit redundant, because -%D in these situations we could use the c||version, but for -%D documentation purposes the x||alternative comes in handy. +%D Next we redefine a previously defined macro to take care of interface translation +%D too. It's a bit redundant, because in these situations we could use the +%D c||version, but for documentation purposes the x||alternative comes in handy. \unexpanded\def\defineinterfaceconstant#1#2% {\expandafter\def\csname\c!prefix!#1\endcsname{#2}} @@ -761,16 +715,14 @@ %D \macros %D {startelements} %D -%D Due to the object oriented nature of \CONTEXT, we also need -%D to define the elements that are used to build commands. +%D Due to the object oriented nature of \CONTEXT, we also need to define the +%D elements that are used to build commands. %D -%D Such elements sometimes are the same in diferent -%D languages, but mostly they differ. Things can get even -%D confusing when we look at for instance the setup commands. -%D In english we say \type{\setup<something>}, but in dutch we -%D have: \type{\stel<iets>in}. Such split elements are no -%D problem, because we just define two elements. When no second -%D part is needed, we use a \type{-}: +%D Such elements sometimes are the same in different languages, but mostly they +%D differ. Things can get even confusing when we look at for instance the setup +%D commands. In english we say \type{\setup<something>}, but in dutch we have: \type +%D {\stel<iets>in}. Such split elements are no problem, because we just define two +%D elements. When no second part is needed, we use a \type {-}: \unexpanded\def\setinterfaceelement#1#2% {\clf_setinterfaceelement{#1}{#2}% @@ -820,15 +772,18 @@ \stopinterface -%D So much for the basic multi||lingual interface commands. The -%D macro's can be enhanced with more testing facilities, but -%D for the moment they suffice. +%D So much for the basic multi||lingual interface commands. The macro's can be +%D enhanced with more testing facilities, but for the moment they suffice. \ifdefined\zwnj \else \edef\zwnj{\directlua{utf.char(\number"200C)}} \fi % needed for cont-pe % maybe to char-utf.mkiv \ifdefined\zwj \else \edef\zwj {\directlua{utf.char(\number"200D)}} \fi % needed for cont-pe % maybe to char-utf.mkiv -%D Out of convenience we define the banners here. This might move -%D to the \LUA\ end. + +%D \macros +%D {contextversion, contextversionnumber, contextversionno, +%D contextbanner, showcontextbanner, formatversion} +%D +%D Out of convenience we define the banners here. This might move to the \LUA\ end. \def\contextbanner {ConTeXt \space @@ -837,28 +792,34 @@ int: \currentinterface/\currentresponses} \unexpanded\def\showcontextbanner - %{\writeline - % \writestring\contextbanner - % \writeline} {\writestatus\m!system\empty \writestatus\m!system\contextbanner \writestatus\m!system\empty} \edef\formatversion - {\the\normalyear .\the\normalmonth.\the\normalday} + {\the\normalyear.\the\normalmonth.\the\normalday} + +\newcount\contextversionno \ifx\contextversion\undefined - \def\contextversion {unknown} - \def\contextversionnumber{0} -\else - %\def\contextversionnumber#1.#2.#3 #4:#5\relax{#1\ifnum#2<10 0\fi#2\ifnum#3<10 0\fi#3 #4:#5} - \def\contextversionnumber#1.#2.#3 #4:#5\relax{#1\ifnum#2<10 0\fi\purenumber{#2}\ifnum#3<10 0\fi\purenumber{#3} #4:#5} - \edef\contextversionnumber{\expandafter\contextversionnumber\contextversion\relax\space\contextmark} + \edef\contextversion{\the\normalyear.\the\normalmonth.\the\normalday\space 00:00} \fi +% \def\contextversionnumber#1.#2.#3 #4:#5\relax{#1\ifnum#2<10 0\fi\purenumber{#2}\ifnum#3<10 0\fi\purenumber{#3} #4:#5} +% \edef\contextversionnumber{\expandafter\contextversionnumber\contextversion\relax\space\contextmark} + +\unexpanded\def \contextversionnumber #1.#2.#3 #4:#5\relax{#1#2#3} + \contextversionno \expandafter\contextversionnumber\contextversion\relax + \edef \contextversionnumber {\the\contextversionno\space\contextmark} + +%D \macros +%D {everydump} +%D +%D This one is only used when we generate the format. + \ifx\undefined\everydump - \newtoks\everydump - \def\dump{\the\everydump\normaldump} + \newtoks\everydump + \def\dump{\the\everydump\normaldump} \fi % \appendtoks \showcontextbanner \to \everydump |