Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Alan BRASLAU]

On Wed, 7 Jun 2017 18:03:35 +0200
Hans Hagen  wrote:

> > I have been massacred on this list for ever preferring \over to
> > \frac...  
> 
> and because of the many {} you then need you get these mismatch
> errors ... but, you can make
> 
> \unexpanded\def\fakefrac#1#2{{{#1}\over{#2}}}

The syntax {a \over b} is much more readable (to a mathematician) than
\frac{a}{b} which looks fine to a programmer.

This has nothing to say about how one or the other performs, it is a
purely syntactical preference.

Alan
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Re: [NTG-context] how to prevent stupid typos?

[Pablo Rodriguez]

On 06/07/2017 11:01 PM, Hans Hagen wrote:
> sure it's no big deal to write such a script but in decades of tex i 
> never felt the need

I wrote a small script for my Linux machine (check-context.sh), to be
able to check a single file:

  source $HOME/ctxbeta/tex/setuptex
  mtxrunjit --autogenerate --script check $1
  echo $1

But when applied to a file, I get the following:

  $ check-context untitled.tex
  The argument "/home/ousia/untitled.tex" is not a valid TEXROOT path.
  (There is no file "/home/ousia/untitled.tex/texmf/tex/plain
  /base/plain.tex")
  8  grouping error  ode[abc]  This is \linenote{abed
   intended.\stopt
   10  missing stop  enote{abed intended.\stoptext
 (see line 7)

  untitled.tex

I mean, I get the output, but after an error. $1 has full path in the
first ocurrence, but it has only the relative path with echo.

Of course, I get not error by direct invocation:

  $ mtxrunjit --autogenerate --script check untitled.tex
  8  grouping error  ode[abc]  This is \linenote{abed
   intended.\stopt
   10  missing stop  enote{abed intended.\stoptext
(see line 7)

What am I doing wrong here?

Many thanks for your help,

Pablo
-- 
http://www.ousia.tk
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Re: [NTG-context] Position of prime for derivatives

[Hans Hagen]

On 6/7/2017 9:57 PM, Mikael P. Sundqvist wrote:


In 2017.06.06 13:22 something is still not correct.
i mentioned that you need a new engine (the garden has 1.0.5 binafies 
for windows but other platforms need to be generated)


Hans

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Re: [NTG-context] how to prevent stupid typos?

[Hans Hagen]

On 6/7/2017 9:02 PM, Idris Samawi Hamid ادريس سماوي حامد wrote:

On Wed, 07 Jun 2017 12:11:14 -0600, Pablo Rodriguez  wrote:


(but i have to admit that i normally just run files and redo after
fixing an error, running is fast enough)


My question here isn’t about speed. If a source may load twenty source
files and it actually loads five source files, the problem is having to
check the files individually.


I suppose it wouldn't be too hard for someone with the requisite ability 
to write a script to pipe and run the check on the argument of each 
\input in a main file.


OTOH, \input's can have \input's so it could get unwieldy pretty quick..

As a matter of workflow, I would just check each \input when editing it, 
don't see the need to check them all over and over - but maybe you have 
some huge collaborative project with lots of \inputs frequently changing..
sure it's no big deal to write such a script but in decades of tex i 
never felt the need


Hans

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Re: [NTG-context] how to prevent stupid typos?

[Idris Samawi Hamid ادريس سماوي حامد]

On Wed, 07 Jun 2017 14:33:05 -0600, Pablo Rodriguez  wrote:


On 06/07/2017 10:16 PM, Idris Samawi Hamid ادريس سماوي حامد wrote:
On Wed, 07 Jun 2017 14:08:21 -0600, Pablo Rodriguez   
wrote:



And creating a keyboard shortcut to launch the script automatically
helps a lot.


Scite: Ctrl-0
Notepad++: Ctrl-Shift-0

(new n++ setup for context currently under development)


Where are these setops? I mean, in the past, I tried to add them to
Notepad++ with the help of the wiki and I gave up because I couldn’t
make it work.


Best to forget the old stuff on the wiki... Will make an announcement once  
the new system is ready. It includes a dedicated lexer plugin and some  
other neat things; stay tuned.


Idris
--
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Department of Philosophy
Colorado State University
Fort Collins, CO 80512
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Re: [NTG-context] how to prevent stupid typos?

[Pablo Rodriguez]

On 06/07/2017 10:16 PM, Idris Samawi Hamid ادريس سماوي حامد wrote:
> On Wed, 07 Jun 2017 14:08:21 -0600, Pablo Rodriguez  wrote:
> 
>> And creating a keyboard shortcut to launch the script automatically
>> helps a lot.
> 
> Scite: Ctrl-0
> Notepad++: Ctrl-Shift-0
> 
> (new n++ setup for context currently under development)

Where are these setops? I mean, in the past, I tried to add them to
Notepad++ with the help of the wiki and I gave up because I couldn’t
make it work.

Pablo
-- 
http://www.ousia.tk
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Re: [NTG-context] how to prevent stupid typos?

[Idris Samawi Hamid ادريس سماوي حامد]

On Wed, 07 Jun 2017 14:08:21 -0600, Pablo Rodriguez  wrote:


And creating a keyboard shortcut to launch the script automatically
helps a lot.


Scite: Ctrl-0
Notepad++: Ctrl-Shift-0

(new n++ setup for context currently under development)

Idris
--
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80512
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Re: [NTG-context] how to prevent stupid typos?

[Pablo Rodriguez]

On 06/07/2017 09:08 PM, Hans Hagen wrote:
> On 6/7/2017 8:11 PM, Pablo Rodriguez wrote:
>> My question here isn’t about speed. If a source may load twenty source
>> files and it actually loads five source files, the problem is having to
>> check the files individually.
> 
> in that case i always run the individual files independently when 
> editing them

As Idris pointed out too, I need to get the habit of ckecking source
files every time I edit them.

And creating a keyboard shortcut to launch the script automatically
helps a lot.

Many thanks for your help,

Pablo
-- 
http://www.ousia.tk
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Re: [NTG-context] how to prevent stupid typos?

[Pablo Rodriguez]

On 06/07/2017 09:02 PM, Idris Samawi Hamid ادريس سماوي حامد wrote:
> [...]
> As a matter of workflow, I would just check each \input when editing it,  
> don't see the need to check them all over and over - but maybe you have  
> some huge collaborative project with lots of \inputs frequently changing..

My project isn’t collaborative (I’m the only one who writes code there)
and it is by no means huge. It is probably too complex for such simple
mind as mine .

\inputs don’t change too frequently. But the code I wrote a month ago is
totally forgotten to me. I mean, I read and I understand what I wrote,
but I may not remember why I did something in that particular way.

I don’t need external examination to see that the code is unnecessarily
complex in many ways. But I’m neither a ConTeXt or programming expert.

The most common problem is that we have different conditions that
weren’t considered when writing the original code.

And these code additions may cause trouble. Because they need to be
implemented in the shortest period of time and in the not the quietest
working environment. At least for me, this is the perfect scenario to
forget to close something I opened before.

That being said, "mtxrunjit --autogenerate --script check" is the
perfect tool to spot those stupid errors.

Many thanks for your help,


Pablo
-- 
http://www.ousia.tk
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Re: [NTG-context] Position of prime for derivatives

[Mikael P. Sundqvist]

On Wed, Jun 7, 2017 at 9:57 PM, Mikael P. Sundqvist  wrote:
> On Mon, Jun 5, 2017 at 11:00 PM, Hans Hagen  wrote:
>> On 6/4/2017 11:06 PM, Otared Kavian wrote:
>>>
>>> Hi Mikael,
>>>
>>> Indeed your observation is correct, but using \over instead of \frac
>>> yields the correct behavior. Please try the following sample:
>>>
>>> %%% begin derivatives-prime-4.tex
>>> \setupbodyfont[lucidaot]
>>>
>>> \starttext
>>>
>>> Compare the position of the prime sign in $f'/g$ in these two expressions:
>>> the first one using \type{{... \over ...}}
>>> \startformula
>>> \left({f \over g}\right)' = {f' \over g} - {f \over g^2}g'
>>> \stopformula
>>> (which yields a correct position of the prime for $f'$ in $f'/g$), and the
>>> second using \type{\frac{...}{...}}
>>> \startformula
>>> \left(\frac{f}{g} \right)' = \frac{f'}{g} - \frac{f}{g^2} g'
>>> \stopformula
>>> which yields a prime sign for $f'$ a little bit lower.
>>>
>>> \stoptext
>>> %%% end derivatives-prime-4.tex
>>
>> The problem with primes is that it's a real mess, conceptually as well as in
>> fonts.
>>
>> - we need to deal with not only one prime but also with double, tripple and
>> quadruple ones and they need to become proper unicode symbols too
>>
>> - fonts have one, two or three sizes, often inconsistent and with funny
>> dimensions, onlyt the text size can be trusted
>>
>> - we cannot use prime as nuclues as it can be combined with a subscript
>>
>> - but it isn't designed as a script symbol and is already raised (somewhat)
>>
>> - so we have to deal with a good old tex / fonts / plain inheritance,
>> unicode but also want to avoid active character and parsing mess etc.
>>
>> I tried several approaches and it's hard to come up with a general solution
>> that suits all fonts.
>>
>> Now, the bad is that when we use a superscript with a smashed virtual
>> characters we end up in script choice mess with primes being one step too
>> small.
>>
>> So, I decided to follow a different route and extend luatex with a sizeless
>> super/subscript feature so that we can handle such weird cases (there might
>> be more).
>>
>> This also means that the primes get larger. I only use the text size prime
>> and scale that down for the other sizes i.e. no stty for primes as they are
>> such a mess) but we can live with that.
>>
>> The good news is that it gets better but the bad news is that you have to
>> wait till we release luatex 1.0.5 (planned for the ctx meeting but we might
>> do an intermediate garden release anyway).
>>
>> btw, with \frac you get cramped styles and these have different positioning.
>> Such is life.
>>
>> Hans
>>
>> -
>>   Hans Hagen | PRAGMA ADE
>>   Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>>tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
>> -
>> ___
>> If your question is of interest to others as well, please add an entry to
>> the Wiki!
>>
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>> wiki : http://contextgarden.net
>> ___
>
> Again, thanks.
>
> In 2017.06.06 13:22 something is still not correct.
>
> The input file
>
> \startTEXpage[offset=3pt]
> $f'(x)\hat{f}'(x)$
> \stopTEXpage
>
> gives the attached output. The prime of f'(x) looks wrong, the one of
> \hat{f}'(x) looks correct.
>
> /Mikael

I was too quick. The example

\setupbodyfont[lucidaot,10pt]
\setupmathematics[stylealternative={calligraphic}]% to get the normal
math lower case italic

\startTEXpage[offset=3pt]
$f'(x)\hat{f}'(x)$
\stopTEXpage

gives bad result in both cases. The first one with wrong size and
wrong vertical placement, the second one only with wrong vertical
placement (that was not obvious to me for latin modern).

/Mikael


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Re: [NTG-context] Position of prime for derivatives

[Mikael P. Sundqvist]

On Mon, Jun 5, 2017 at 11:00 PM, Hans Hagen  wrote:
> On 6/4/2017 11:06 PM, Otared Kavian wrote:
>>
>> Hi Mikael,
>>
>> Indeed your observation is correct, but using \over instead of \frac
>> yields the correct behavior. Please try the following sample:
>>
>> %%% begin derivatives-prime-4.tex
>> \setupbodyfont[lucidaot]
>>
>> \starttext
>>
>> Compare the position of the prime sign in $f'/g$ in these two expressions:
>> the first one using \type{{... \over ...}}
>> \startformula
>> \left({f \over g}\right)' = {f' \over g} - {f \over g^2}g'
>> \stopformula
>> (which yields a correct position of the prime for $f'$ in $f'/g$), and the
>> second using \type{\frac{...}{...}}
>> \startformula
>> \left(\frac{f}{g} \right)' = \frac{f'}{g} - \frac{f}{g^2} g'
>> \stopformula
>> which yields a prime sign for $f'$ a little bit lower.
>>
>> \stoptext
>> %%% end derivatives-prime-4.tex
>
> The problem with primes is that it's a real mess, conceptually as well as in
> fonts.
>
> - we need to deal with not only one prime but also with double, tripple and
> quadruple ones and they need to become proper unicode symbols too
>
> - fonts have one, two or three sizes, often inconsistent and with funny
> dimensions, onlyt the text size can be trusted
>
> - we cannot use prime as nuclues as it can be combined with a subscript
>
> - but it isn't designed as a script symbol and is already raised (somewhat)
>
> - so we have to deal with a good old tex / fonts / plain inheritance,
> unicode but also want to avoid active character and parsing mess etc.
>
> I tried several approaches and it's hard to come up with a general solution
> that suits all fonts.
>
> Now, the bad is that when we use a superscript with a smashed virtual
> characters we end up in script choice mess with primes being one step too
> small.
>
> So, I decided to follow a different route and extend luatex with a sizeless
> super/subscript feature so that we can handle such weird cases (there might
> be more).
>
> This also means that the primes get larger. I only use the text size prime
> and scale that down for the other sizes i.e. no stty for primes as they are
> such a mess) but we can live with that.
>
> The good news is that it gets better but the bad news is that you have to
> wait till we release luatex 1.0.5 (planned for the ctx meeting but we might
> do an intermediate garden release anyway).
>
> btw, with \frac you get cramped styles and these have different positioning.
> Such is life.
>
> Hans
>
> -
>   Hans Hagen | PRAGMA ADE
>   Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -
> ___
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> the Wiki!
>
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> wiki : http://contextgarden.net
> ___

Again, thanks.

In 2017.06.06 13:22 something is still not correct.

The input file

\startTEXpage[offset=3pt]
$f'(x)\hat{f}'(x)$
\stopTEXpage

gives the attached output. The prime of f'(x) looks wrong, the one of
\hat{f}'(x) looks correct.

/Mikael


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Re: [NTG-context] aligning external figures

[Pablo Rodriguez]

On 06/07/2017 09:02 PM, Hans Hagen wrote:
> On 6/7/2017 8:23 PM, Pablo Rodriguez wrote:
>> [...]
>> \c!align=\v!none, % New, for Tacos extremely large graphics.
>>
>> Sorry for asking, but would it be possible that the key should set
>> alignment for externalfigures and there is a bug in it?
>>
>> Taco, may you enlighten us in the alignment your extremely large
>> graphics needed? (Sorry for bothering you, but we need to know which
>> kind of alignment is.)
> 
> probably a mkii left over ... (maybe the reporting part) ... there is 
> nothing to align in an external graphic (apart from the framed box but 
> thatone has exact dimension sso again, nothing to align

Many thanks for your reply, Hans.

Now it’s clear to me.

Pablo
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Re: [NTG-context] how to prevent stupid typos?

[Hans Hagen]

On 6/7/2017 8:11 PM, Pablo Rodriguez wrote:


My question here isn’t about speed. If a source may load twenty source
files and it actually loads five source files, the problem is having to
check the files individually.
in that case i always run the individual files independently when 
editing them


Hans

-
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  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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Re: [NTG-context] how to prevent stupid typos?

[Idris Samawi Hamid ادريس سماوي حامد]

On Wed, 07 Jun 2017 12:11:14 -0600, Pablo Rodriguez  wrote:


(but i have to admit that i normally just run files and redo after
fixing an error, running is fast enough)


My question here isn’t about speed. If a source may load twenty source
files and it actually loads five source files, the problem is having to
check the files individually.


I suppose it wouldn't be too hard for someone with the requisite ability  
to write a script to pipe and run the check on the argument of each \input  
in a main file.


OTOH, \input's can have \input's so it could get unwieldy pretty quick..

As a matter of workflow, I would just check each \input when editing it,  
don't see the need to check them all over and over - but maybe you have  
some huge collaborative project with lots of \inputs frequently changing..


Best wishes
Idris
--
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80512
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Re: [NTG-context] aligning external figures

[Hans Hagen]

On 6/7/2017 8:23 PM, Pablo Rodriguez wrote:

On 06/07/2017 03:55 PM, Hans Hagen wrote:

On 6/4/2017 11:29 AM, Pablo Rodriguez wrote:

[...]
Does anyone know how the align key in \setupexternalfigure works?


it doesn't (no clue what it should be doing anyway)


Many thanks for your reply, Hans.

grph-inc.mkiv includes the following content in line 104 (removed some
blank spaces, so it fits in a single line):

\c!align=\v!none, % New, for Tacos extremely large graphics.

Sorry for asking, but would it be possible that the key should set
alignment for externalfigures and there is a bug in it?

Taco, may you enlighten us in the alignment your extremely large
graphics needed? (Sorry for bothering you, but we need to know which
kind of alignment is.)
probably a mkii left over ... (maybe the reporting part) ... there is 
nothing to align in an external graphic (apart from the framed box but 
thatone has exact dimension sso again, nothing to align


Hans

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Re: [NTG-context] how to prevent stupid typos?

[Idris Samawi Hamid ادريس سماوي حامد]

On Wed, 07 Jun 2017 02:09:48 -0600, Hans Hagen  wrote:


On 6/7/2017 7:02 AM, Pablo Rodriguez wrote:

On 06/06/2017 10:56 PM, Idris Samawi Hamid ادريس سماوي حامد wrote:

[...]
Would it be any way to make ConTeXt report that \linenote{ hasn’t been
closed?


Just check your file before running it:

mtxrun --autogenerate --script check test.tex

Running this on your example gives

2  grouping error  \starttext This is \linenote{abed  
intended.

   \stoptext   

 Dear Idris,
 many thanks for the advice.
 I’m afraid that it doesn’t report errors in files loaded with the  
\input

command
  %%% contents of file a.tex:
 \starttext
 This is \linenote{error intended
 \stoptext
  %%% contents of file b.tex:
 \starttext
 This only loads a file.
  \input a.tex
 \stoptext
 If I runt "mtxrunjit --autogenerate --script check b.tex", I get the
following message:
  no error
 Is there no way to check also the files loaded by the main source?
i just run that command from the editor (configured under a key) so i  
can use it when editing a file


Same here.

(but i have to admit that i normally just run files and redo after  
fixing an error, running is fast enough)


Again, same here.

Idris
--
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80512
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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Mikael P. Sundqvist]

On Wed, Jun 7, 2017 at 7:31 PM, Hans Hagen  wrote:
> On 6/7/2017 4:50 PM, Mikael P. Sundqvist wrote:
>>
>> On Mon, Jun 5, 2017 at 10:24 AM, Mikael P. Sundqvist 
>> wrote:
>>>
>>> Hi,
>>>
>>> this might be a matter of taste.
>>>
>>> look at the output of (attached). In my opinion the first square root
>>> is to "high", while it looks better on the second line. From
>>> setup-en.pdf it looks like the default of \setupmathradical is set to
>>> normal (and not default). I don't understand what normal should mean,
>>> but I think the alternative=default looks better. (The lucida fonts
>>> are loaded in this example, since the effect is more clear for them).
>
> Ok, this is the story
>
> -- radicals (roots) are rather special and have some hard coded properties
> (like always scriptscript in the degree)
>
> -- \over (and friends) that are used in \frac (which by the way can be
> configured in many ways) has the danger of getting the wrong style as side
> effect of parsing (math list construction) and processing
>
> -- in context we want to support color etc for noth in a consistent way as
> well as style control (important in educational math)
>
> Normally it works out ok with the 'normal' setting but there is some catch
> here. The size of the radical symbols is determine by
>
> -- RadicalVerticalGap =  50
> -- RadicalDisplayStyleVerticalGap = 175
>
> (These are lucide values) and it happens that the second one if too large
> which can give a bad threshold in our case. In cambria it's
>
> RadicalVerticalGap = 166
> RadicalDisplayStyleVerticalGap = 345
>
> So a 1:2 ratio. If we use that for lucida it looks better, so
>
>   lucida-opentype-math.lfg
>
> can become:
>
> local function FixRadicalDisplayStyleVerticalGap(value,target,original)
> local o = original.mathparameters.RadicalVerticalGap -- 50
> return 2 * o * target.parameters.factor
> end
>
> return {
> name = "lucida-opentype-math",
> version = "1.00",
> comment = "Goodies that complement lucida opentype.",
> author = "Hans Hagen",
> copyright = "ConTeXt development team",
> mathematics = {
> parameters = {
> RadicalDisplayStyleVerticalGap =
> FixRadicalDisplayStyleVerticalGap,
> },
> alternates = {
> italic   = { feature = 'ss01', value = 1, comment =
> "Mathematical Alternative Lowercase Italic" },
> arrow= { feature = 'ss02', value = 1, comment =
> "Mathematical Alternative Smaller Arrows" },
> operator = { feature = 'ss03', value = 1, comment =
> "Mathematical Alternative Smaller Operators" },
> calligraphic = { feature = 'ss04', value = 1, comment =
> "Mathematical Alternative Calligraphic Characters" },
> zero = { feature = 'ss05', value = 1, comment =
> "Mathematical Alternative Zero" },
> partial  = { feature = 'ss20', value = 1, comment =
> "Mathematical Alternative Upright Partial Differential" },
> },
> },
> }
>
> It's sort of a font property: the more sizes the better and sometimes you're
> simply hit by the threshold not suiting your case.
>
>
> Hans
>
> -
>   Hans Hagen | PRAGMA ADE
>   Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -
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Hans,

many thanks for your explanation, it is really appreciated when you
take your time to do this!

I updated my local lucida-opentype-math.lfg and indeed it works like
charm. I think the uncramped version I get now looks better than what
I forced with the temporary solution that I did not understand.

/Mikael
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Re: [NTG-context] aligning external figures

[Pablo Rodriguez]

On 06/07/2017 03:55 PM, Hans Hagen wrote:
> On 6/4/2017 11:29 AM, Pablo Rodriguez wrote:
>> [...]
>> Does anyone know how the align key in \setupexternalfigure works?
> 
> it doesn't (no clue what it should be doing anyway)

Many thanks for your reply, Hans.

grph-inc.mkiv includes the following content in line 104 (removed some
blank spaces, so it fits in a single line):

   \c!align=\v!none, % New, for Tacos extremely large graphics.

Sorry for asking, but would it be possible that the key should set
alignment for externalfigures and there is a bug in it?

Taco, may you enlighten us in the alignment your extremely large
graphics needed? (Sorry for bothering you, but we need to know which
kind of alignment is.)


Pablo
-- 
http://www.ousia.tk
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Re: [NTG-context] how to prevent stupid typos?

[Pablo Rodriguez]

On 06/07/2017 10:09 AM, Hans Hagen wrote:
> On 6/7/2017 7:02 AM, Pablo Rodriguez wrote:
>> [...]
>> If I runt "mtxrunjit --autogenerate --script check b.tex", I get the
>> following message:
>>
>>  no error
>>
>> Is there no way to check also the files loaded by the main source?
> 
> i just run that command from the editor (configured under a key) so i 
> can use it when editing a file

Hans,

I have just discovered the command (thanks to the kind help of Idris),
so I still have to experiment with it.

First of all, many thanks for the command (method, or whatever it should
be called). It is really useful.

In my real-world issue, the tool it spotted my mistake (a non-closed
\startnotmode nested in \startmode and followed by another \startmode).

My previous reply came before having used the checking method.

> (but i have to admit that i normally just run files and redo after 
> fixing an error, running is fast enough)

My question here isn’t about speed. If a source may load twenty source
files and it actually loads five source files, the problem is having to
check the files individually.

Many thanks for your help,

Pablo
-- 
http://www.ousia.tk
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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Hans Hagen]

On 6/7/2017 4:50 PM, Mikael P. Sundqvist wrote:

On Mon, Jun 5, 2017 at 10:24 AM, Mikael P. Sundqvist  wrote:

Hi,

this might be a matter of taste.

look at the output of (attached). In my opinion the first square root
is to "high", while it looks better on the second line. From
setup-en.pdf it looks like the default of \setupmathradical is set to
normal (and not default). I don't understand what normal should mean,
but I think the alternative=default looks better. (The lucida fonts
are loaded in this example, since the effect is more clear for them).

Ok, this is the story

-- radicals (roots) are rather special and have some hard coded 
properties (like always scriptscript in the degree)


-- \over (and friends) that are used in \frac (which by the way can be 
configured in many ways) has the danger of getting the wrong style as 
side effect of parsing (math list construction) and processing


-- in context we want to support color etc for noth in a consistent way 
as well as style control (important in educational math)


Normally it works out ok with the 'normal' setting but there is some 
catch here. The size of the radical symbols is determine by


-- RadicalVerticalGap =  50
-- RadicalDisplayStyleVerticalGap = 175

(These are lucide values) and it happens that the second one if too 
large which can give a bad threshold in our case. In cambria it's


RadicalVerticalGap = 166
RadicalDisplayStyleVerticalGap = 345

So a 1:2 ratio. If we use that for lucida it looks better, so

  lucida-opentype-math.lfg

can become:

local function FixRadicalDisplayStyleVerticalGap(value,target,original)
local o = original.mathparameters.RadicalVerticalGap -- 50
return 2 * o * target.parameters.factor
end

return {
name = "lucida-opentype-math",
version = "1.00",
comment = "Goodies that complement lucida opentype.",
author = "Hans Hagen",
copyright = "ConTeXt development team",
mathematics = {
parameters = {
RadicalDisplayStyleVerticalGap = 
FixRadicalDisplayStyleVerticalGap,

},
alternates = {
italic   = { feature = 'ss01', value = 1, comment = 
"Mathematical Alternative Lowercase Italic" },
arrow= { feature = 'ss02', value = 1, comment = 
"Mathematical Alternative Smaller Arrows" },
operator = { feature = 'ss03', value = 1, comment = 
"Mathematical Alternative Smaller Operators" },
calligraphic = { feature = 'ss04', value = 1, comment = 
"Mathematical Alternative Calligraphic Characters" },
zero = { feature = 'ss05', value = 1, comment = 
"Mathematical Alternative Zero" },
partial  = { feature = 'ss20', value = 1, comment = 
"Mathematical Alternative Upright Partial Differential" },

},
},
}

It's sort of a font property: the more sizes the better and sometimes 
you're simply hit by the threshold not suiting your case.


Hans

-
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   tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Hans Hagen]

On 6/7/2017 5:12 PM, Otared Kavian wrote:

Hi,

Indeed using \frac yields a weird result in the example sent by Mikael.
Compare the output of the three formulas below, with or without 
\setupmathradical[sqrt][alternative=default].


The results are correct using \over in both cases, while the first one 
is weird when using \frac and \setupmathradical[sqrt][alternative=default].


Best regards: OK
%%% start of test file
\starttext
\startbuffer[math]
\startformula
\sqrt{1+\Bigl(\frac{f(x_k)-f(x_{k-1})}{x_k-x_{k-1}}\Bigr)^2}
\stopformula

\startformula
1+\Bigl(\frac{f(x_k)-f(x_{k-1})}{x_k-x_{k-1}}\Bigr)^2
\stopformula

\startformula
\sqrt{1+\Bigl({f(x_k)-f(x_{k-1}) \over x_k - x_{k-1}}\Bigr)^2}
\stopformula
\stopbuffer

\getbuffer[math]
\hairline

\setupmathradical[sqrt][alternative=default]

\getbuffer[math]

\stoptext

interesting side effect of Ustack (i'll look at it)

Hans

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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Hans Hagen]

On 6/7/2017 5:45 PM, Alan BRASLAU wrote:

On Wed, 7 Jun 2017 17:12:44 +0200
Otared Kavian  wrote:


The results are correct using \over in both cases, while the first
one is weird when using \frac and


I have been massacred on this list for ever preferring \over to \frac...


and because of the many {} you then need you get these mismatch errors 
... but, you can make


\unexpanded\def\fakefrac#1#2{{{#1}\over{#2}}}

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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Meer, Hans van der]

> On 7 Jun 2017, at 17:45, Alan BRASLAU  wrote:
> 
> On Wed, 7 Jun 2017 17:12:44 +0200
> Otared Kavian  wrote:
> 
>> The results are correct using \over in both cases, while the first
>> one is weird when using \frac and 
> 


> I have been massacred on this list for ever preferring \over to \frac...

Do not be sad, we will bring flowers to console you - some of us do not hate 
\over  ;-) ;-) ;-)

> __

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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Alan BRASLAU]

On Wed, 7 Jun 2017 17:12:44 +0200
Otared Kavian  wrote:

> The results are correct using \over in both cases, while the first
> one is weird when using \frac and 

I have been massacred on this list for ever preferring \over to \frac...
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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Otared Kavian]

Hi,

Indeed using \frac yields a weird result in the example sent by Mikael.
Compare the output of the three formulas below, with or without 
\setupmathradical[sqrt][alternative=default].

The results are correct using \over in both cases, while the first one is weird 
when using \frac and \setupmathradical[sqrt][alternative=default].

Best regards: OK
%%% start of test file
\starttext
\startbuffer[math]
\startformula
\sqrt{1+\Bigl(\frac{f(x_k)-f(x_{k-1})}{x_k-x_{k-1}}\Bigr)^2}
\stopformula

\startformula
1+\Bigl(\frac{f(x_k)-f(x_{k-1})}{x_k-x_{k-1}}\Bigr)^2
\stopformula

\startformula
\sqrt{1+\Bigl({f(x_k)-f(x_{k-1}) \over x_k - x_{k-1}}\Bigr)^2}
\stopformula
\stopbuffer

\getbuffer[math]
\hairline

\setupmathradical[sqrt][alternative=default]

\getbuffer[math]

\stoptext
%%% end of test file


> On 7 Jun 2017, at 16:50, Mikael P. Sundqvist  wrote:
>> […]
> 
> Hans,
> 
> maybe the \setupmathradical[sqrt][alternative=default] was not so
> successful after all. Or maybe this is a bug:
> 
> %%% start of test file
> \setupmathradical[sqrt][alternative=default]
> 
> \starttext
> \startformula
> \sqrt{1+\Bigl(\frac{f(x_k)-f(x_{k-1})}{x_k-x_{k-1}}\Bigr)^2}
> \stopformula
> \stoptext
> %%% stop of test file
> 
> The numerator looks too small in my opinion. Compiled with 2017.06.06 13:22.
> 
> /Mikael
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Re: [NTG-context] mathradical defaults to "normal", should it perhaps be "default"?

[Mikael P. Sundqvist]

On Mon, Jun 5, 2017 at 10:24 AM, Mikael P. Sundqvist  wrote:
> Hi,
>
> this might be a matter of taste.
>
> look at the output of (attached). In my opinion the first square root
> is to "high", while it looks better on the second line. From
> setup-en.pdf it looks like the default of \setupmathradical is set to
> normal (and not default). I don't understand what normal should mean,
> but I think the alternative=default looks better. (The lucida fonts
> are loaded in this example, since the effect is more clear for them).
>
> /Mikael
>
> \setupbodyfont[lucidaot]
>
> \starttext
>
> \startTEXpage[offset=2pt]
> \startformula
> \sqrt{1+x^2}\neq \frac{1}{\sqrt{1+x^2}}
> \stopformula
>
> %the default setting for mathradical seems to be "normal". We change
> it to "normal"
> \setupmathradical[sqrt][alternative=default]
>
> \startformula
> \displaystyle\sqrt{1+x^2}\neq \frac{1}{\sqrt{1+x^2}}
> \stopformula
> \stopTEXpage
>
> \stoptext

Hans,

maybe the \setupmathradical[sqrt][alternative=default] was not so
successful after all. Or maybe this is a bug:

%%% start of test file
\setupmathradical[sqrt][alternative=default]

\starttext
\startformula
\sqrt{1+\Bigl(\frac{f(x_k)-f(x_{k-1})}{x_k-x_{k-1}}\Bigr)^2}
\stopformula
\stoptext
%%% stop of test file

The numerator looks too small in my opinion. Compiled with 2017.06.06 13:22.

/Mikael


ctx-example22.pdf
Description: Adobe PDF document
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Re: [NTG-context] aligning external figures

[Hans Hagen]

On 6/4/2017 11:29 AM, Pablo Rodriguez wrote:

Dear list,

I have the following sample:

 \setupexternalfigure[location=default, align=middle]
 \starttext
 \dontleavehmode\externalfigure[cow.pdf]

 \externalfigure[cow.pdf]
 \stoptext

As you can see, \dontleavehmode makes no difference.

Does anyone know how the align key in \setupexternalfigure works?


it doesn't (no clue what it should be doing anyway)

Hans

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Re: [NTG-context] how to prevent stupid typos?

[Hans Hagen]

On 6/7/2017 7:02 AM, Pablo Rodriguez wrote:

On 06/06/2017 10:56 PM, Idris Samawi Hamid ادريس سماوي حامد wrote:

[...]
Would it be any way to make ConTeXt report that \linenote{ hasn’t been
closed?


Just check your file before running it:

mtxrun --autogenerate --script check test.tex

Running this on your example gives

2  grouping error  \starttext This is \linenote{abed intended.
   \stoptext   


Dear Idris,

many thanks for the advice.

I’m afraid that it doesn’t report errors in files loaded with the \input
command

 %%% contents of file a.tex:
 \starttext
 This is \linenote{error intended
 \stoptext

 %%% contents of file b.tex:
 \starttext
 This only loads a file.

 \input a.tex
 \stoptext

If I runt "mtxrunjit --autogenerate --script check b.tex", I get the
following message:

 no error

Is there no way to check also the files loaded by the main source?
i just run that command from the editor (configured under a key) so i 
can use it when editing a file


(but i have to admit that i normally just run files and redo after 
fixing an error, running is fast enough)



-
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