Re: [NTG-context] mkiv math delimiters and <|>
Taco Hoekwater wrote: Aditya Mahajan wrote: I personally do not like this behavior of plain tex, with \left< being same as \left\langle. In the long run, all such delimiters should be defined similar to mathml fences, \definemathfence[average][left=\langle, right=\rangle, scale=auto|none] etc. Should we be really supporting this in MKIV? That is a question for Mojca and Hans, I think. FWIW, I do not like it that much either, as there *is* a proper character for this nowadays. indeed we should stick to what unicode provides; if some symbols is missing in lm or tx/pr ... we could fake it as i don't like returning to the times where each exception became a command with per font a different one Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] mkiv math delimiters and <|>
Aditya Mahajan wrote: On Sun, 15 Nov 2009, Taco Hoekwater wrote: Aditya Mahajan wrote: The attached patch gives a working solution for lmmath but does not work with cambria. I don't know if the latter is a fault of context mkiv or luatex. "Does not work" as in: no error, but no delimiter either? No scaled delimiter. There is no difference between \left< and <. That would be a side-effect of Cambria not having defined successors for LESS THAN. I personally do not like this behavior of plain tex, with \left< being same as \left\langle. In the long run, all such delimiters should be defined similar to mathml fences, \definemathfence[average][left=\langle, right=\rangle, scale=auto|none] etc. Should we be really supporting this in MKIV? i don't know. what i observe is that when we use \left\langle always (which is what we do in mathml in order to play safe) the first level symbol is always a bit bigger than just an < maybe it's just a matter of thresholds or prepending a smaller < to the list Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] mkiv math delimiters and <|>
Aditya Mahajan wrote: I personally do not like this behavior of plain tex, with \left< being same as \left\langle. In the long run, all such delimiters should be defined similar to mathml fences, \definemathfence[average][left=\langle, right=\rangle, scale=auto|none] etc. Should we be really supporting this in MKIV? That is a question for Mojca and Hans, I think. FWIW, I do not like it that much either, as there *is* a proper character for this nowadays. Best wishes, Taco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] mkiv math delimiters and <|>
On Sun, 15 Nov 2009, Taco Hoekwater wrote: Aditya Mahajan wrote: The attached patch gives a working solution for lmmath but does not work with cambria. I don't know if the latter is a fault of context mkiv or luatex. "Does not work" as in: no error, but no delimiter either? No scaled delimiter. There is no difference between \left< and <. That would be a side-effect of Cambria not having defined successors for LESS THAN. I personally do not like this behavior of plain tex, with \left< being same as \left\langle. In the long run, all such delimiters should be defined similar to mathml fences, \definemathfence[average][left=\langle, right=\rangle, scale=auto|none] etc. Should we be really supporting this in MKIV? Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] mkiv math delimiters and <|>
Aditya Mahajan wrote: The attached patch gives a working solution for lmmath but does not work with cambria. I don't know if the latter is a fault of context mkiv or luatex. "Does not work" as in: no error, but no delimiter either? That would be a side-effect of Cambria not having defined successors for LESS THAN. Best wishes, Taco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] mkiv math delimiters and <|>
On Sun, 15 Nov 2009, Taco Hoekwater wrote:
Aditya Mahajan wrote:
On Fri, Nov 13, 2009 at 4:03 AM, Mojca Miklavec <
mojca.miklavec.li...@gmail.com> wrote:
Hello,
I have tried to compile an old document (written in mkii times). Among
other problems that I yet need to isolate, the following minimal
example doesn't want to compile: $\bigl| x \bigr>$ since <|> aren't
recognized as candidates for delimiters. There is a workaround of
course (using \langle, \rangle, ... instead of <>), but the three
characters are just way too handy to use.
| works fine here. < and > don't. I did not know that \left< is equivalent
to \left\langle even in plain tex.
I suppose that the behaviour in mkii comes from these lines:
\definemathcharacter [<] [nothing] [sy] ["68] [ex] ["0A]
\definemathcharacter [>] [nothing] [sy] ["69] [ex] ["0B]
I guess mkii is imitating plain tex here. (Though, I could not find how
this
is happening in plain tex)
From plain.tex:
\mathcode`\<="313C
\delcode`\<="26830A
The first (\mathcode) controls standalone use, the second (\delcode)
use as a delimiter. Both can be set at the same time, and that second
one got lost in the conversion, probably because it has a dedicated
slot in Unicode (U+0x27E8, MATHEMATICAL LEFT ANGLE BRACKET).
Perhaps this can be done with the mathspec field in char-def.lua, but
I do not know how?
The attached patch gives a working solution for lmmath but does not work
with cambria. I don't know if the latter is a fault of context mkiv or
luatex.
In any case, this is a kludge as we have to define a dummy name. It will
be better if we could just say name=false. Currently, if I use name=false,
\left< gives an error.
Aditya
diff --git a/char-def.lua b/char-def.lua
index 3aec401..990bfd2 100644
--- a/char-def.lua
+++ b/char-def.lua
@@ -544,8 +544,10 @@ characters.data={
description="LESS-THAN SIGN",
direction="on",
linebreak="al",
- mathclass="binary",
- mathname="lt",
+ mathspec={
+{ name="lt", class="binary" } ,
+{ name="ltdelim", class="delimiter" },
+ },
mirror=0x003E,
unicodeslot=0x003C,
},
@@ -568,8 +570,10 @@ characters.data={
description="GREATER-THAN SIGN",
direction="on",
linebreak="al",
- mathclass="binary",
- mathname="gt",
+ mathspec={
+{ name="gt", class="binary" } ,
+{ name="gtdelim", class="delimiter" },
+ },
mirror=0x003C,
unicodeslot=0x003E,
},
diff --git a/math-vfu.lua b/math-vfu.lua
index 0300bb0..1543833 100644
--- a/math-vfu.lua
+++ b/math-vfu.lua
@@ -566,6 +566,8 @@ fonts.enc.math["large-to-small"] = {
[0x02309] = 0x07, -- rceil
[0x0007B] = 0x08, -- {
[0x0007D] = 0x09, -- }
+[0x0003C] = 0x0A, -- <
+[0x0003E] = 0x0B, -- >
[0x027E8] = 0x0A, -- <
[0x027E9] = 0x0B, -- >
[0x0007C] = 0x0C, -- |
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Re: [NTG-context] mkiv math delimiters and <|>
Aditya Mahajan wrote: On Fri, Nov 13, 2009 at 4:03 AM, Mojca Miklavec < mojca.miklavec.li...@gmail.com> wrote: Hello, I have tried to compile an old document (written in mkii times). Among other problems that I yet need to isolate, the following minimal example doesn't want to compile: $\bigl| x \bigr>$ since <|> aren't recognized as candidates for delimiters. There is a workaround of course (using \langle, \rangle, ... instead of <>), but the three characters are just way too handy to use. | works fine here. < and > don't. I did not know that \left< is equivalent to \left\langle even in plain tex. I suppose that the behaviour in mkii comes from these lines: \definemathcharacter [<] [nothing] [sy] ["68] [ex] ["0A] \definemathcharacter [>] [nothing] [sy] ["69] [ex] ["0B] I guess mkii is imitating plain tex here. (Though, I could not find how this is happening in plain tex) From plain.tex: \mathcode`\<="313C \delcode`\<="26830A The first (\mathcode) controls standalone use, the second (\delcode) use as a delimiter. Both can be set at the same time, and that second one got lost in the conversion, probably because it has a dedicated slot in Unicode (U+0x27E8, MATHEMATICAL LEFT ANGLE BRACKET). Perhaps this can be done with the mathspec field in char-def.lua, but I do not know how? Best wishes, Taco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] mkiv math delimiters and <|>
On Fri, Nov 13, 2009 at 4:03 AM, Mojca Miklavec <
mojca.miklavec.li...@gmail.com> wrote:
> Hello,
>
> I have tried to compile an old document (written in mkii times). Among
> other problems that I yet need to isolate, the following minimal
> example doesn't want to compile: $\bigl| x \bigr>$ since <|> aren't
> recognized as candidates for delimiters. There is a workaround of
> course (using \langle, \rangle, ... instead of <>), but the three
> characters are just way too handy to use.
>
| works fine here. < and > don't. I did not know that \left< is equivalent
to \left\langle even in plain tex.
I suppose that the behaviour in mkii comes from these lines:
>
> \definemathcharacter [<] [nothing] [sy] ["68] [ex] ["0A]
> \definemathcharacter [>] [nothing] [sy] ["69] [ex] ["0B]
>
I guess mkii is imitating plain tex here. (Though, I could not find how this
is happening in plain tex)
> But I'm not sure where mkiv could be changed.
>
I don't know how to do this. < should behave like a rel without a \left, and
like a delimited with \left.
> I have tried to use
> adobename="greater",
> ...
> mathspec={
> { class="binary", name="gt" },
> { class="close", name="rbrace" },
> },
> but without any success.
>
rbrace!!. Probabably you want rangle. You can change the order of the two,
and then > will map to rangle, but you will have to use \gt to get the
relation symbol.
Aditya
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[NTG-context] mkiv math delimiters and <|>
Hello,
I have tried to compile an old document (written in mkii times). Among
other problems that I yet need to isolate, the following minimal
example doesn't want to compile: $\bigl| x \bigr>$ since <|> aren't
recognized as candidates for delimiters. There is a workaround of
course (using \langle, \rangle, ... instead of <>), but the three
characters are just way too handy to use.
I suppose that the behaviour in mkii comes from these lines:
\definemathcharacter [<] [nothing] [sy] ["68] [ex] ["0A]
\definemathcharacter [>] [nothing] [sy] ["69] [ex] ["0B]
But I'm not sure where mkiv could be changed.
I have tried to use
adobename="greater",
...
mathspec={
{ class="binary", name="gt" },
{ class="close", name="rbrace" },
},
but without any success.
Mojca
___
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Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
