Re: [NTG-context] [OT] intelligent commas in math (in LaTeX)
On Sat, Oct 1, 2011 at 4:12 AM, Aditya Mahajan wrote:
>>> In principle a cleaner implementation is possible in luatex (without
>>> using
>>> active characters), but I am not completely sure about this. It will be
>>> better to handle this as part of \mnum macro.
>>>
>> Hm, can you explain this a bit ?
>
> Currently ConTeXt already checks if '.' is part of a complete number or not
> as part of the export macros. For example:
>
> \m{x + 1.25y = 3.5}
>
> exports as
>
> display="inline">𝑥+1.25𝑦=3.5
>
> Notice that 1.25 is part of a single tag.
>
> In contrast, if you use comma as a math delimiter, then the export function
> does not recognize the number correctly.
>
> \m{x + 1,25y = 3.5}
>
> exports as
>
> display="inline">𝑥+1,25𝑦=3,5
>
> However, we do have a \mn macro (math number) to tag numbers. So you can
> type
>
> \m{x + \mn{1,25}y = \mn{3,5}}
>
> which exports as
>
> display="inline">𝑥+1,25𝑦=3,5
>
>
> So, if we want to recognize ',' as a decimal separator, two solutions are
> possible in MkIV. The first is to build upon the existing export code that
> recognizes '.' as a decimal separator (to figure out the contents of the
> tag) to also recognize ',' as a decimal separator;
>
> The drawback of such an approach is that if you are in the habit of not
> adding a space after a comma, for example writing "Let $\naturalnumbers$
> denote the set $\{1,2,3,\dots\}$ of natural numbers..." then you will get
> wrong output.
>
> So, an alternative option is to ask the user to tag all numbers with \mn.
> Then, the \mn{...} macro can redefine the comma so that the spaces around it
> match its use as a decimal separator.
>
> Aditya
ok
--
luigi
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Re: [NTG-context] [OT] intelligent commas in math (in LaTeX)
In principle a cleaner implementation is possible in luatex (without using
active characters), but I am not completely sure about this. It will be
better to handle this as part of \mnum macro.
Hm, can you explain this a bit ?
Currently ConTeXt already checks if '.' is part of a complete number or
not as part of the export macros. For example:
\m{x + 1.25y = 3.5}
exports as
display="inline">𝑥+1.25𝑦=3.5
Notice that 1.25 is part of a single tag.
In contrast, if you use comma as a math delimiter, then the export
function does not recognize the number correctly.
\m{x + 1,25y = 3.5}
exports as
display="inline">𝑥+1,25𝑦=3,5
However, we do have a \mn macro (math number) to tag numbers. So you can
type
\m{x + \mn{1,25}y = \mn{3,5}}
which exports as
display="inline">𝑥+1,25𝑦=3,5
So, if we want to recognize ',' as a decimal separator, two solutions are
possible in MkIV. The first is to build upon the existing export code that
recognizes '.' as a decimal separator (to figure out the contents of the
tag) to also recognize ',' as a decimal separator;
The drawback of such an approach is that if you are in the habit of not
adding a space after a comma, for example writing "Let $\naturalnumbers$
denote the set $\{1,2,3,\dots\}$ of natural numbers..." then you will get
wrong output.
So, an alternative option is to ask the user to tag all numbers with \mn.
Then, the \mn{...} macro can redefine the comma so that the spaces around
it match its use as a decimal separator.
Aditya___
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Re: [NTG-context] [OT] intelligent commas in math (in LaTeX)
that would be very useful for sets and german decimals: $x = 1,33$ vs. $x ∈
{1, 2, 3, 4}$
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Re: [NTG-context] [OT] intelligent commas in math (in LaTeX)
On Thu, Sep 29, 2011 at 6:15 PM, Aditya Mahajan wrote: > On Mon, 26 Sep 2011, Mojca Miklavec wrote: > >> http://tug.org/pracjourn/2011-1/beccari.html > > Short summary: This allows the comma in $1, 2, 3$ to be have as punctuation > comma (similar to \setupmathematics[autopunct=no]) and > $1,23$ to behave as decimal comma (similar to > \setupmatematics[autopunct=yes]). Since it is targeting pdftex and xetex > engines, it makes , an active char in mathmode and redefines it as a macro > that uses look ahead to check if the next token is a digit. > > In principle a cleaner implementation is possible in luatex (without using > active characters), but I am not completely sure about this. It will be > better to handle this as part of \mnum macro. > > Aditya Hm, can you explain this a bit ? -- luigi ___ 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] [OT] intelligent commas in math (in LaTeX)
On Mon, 26 Sep 2011, Mojca Miklavec wrote: http://tug.org/pracjourn/2011-1/beccari.html Short summary: This allows the comma in $1, 2, 3$ to be have as punctuation comma (similar to \setupmathematics[autopunct=no]) and $1,23$ to behave as decimal comma (similar to \setupmatematics[autopunct=yes]). Since it is targeting pdftex and xetex engines, it makes , an active char in mathmode and redefines it as a macro that uses look ahead to check if the next token is a digit. In principle a cleaner implementation is possible in luatex (without using active characters), but I am not completely sure about this. It will be better to handle this as part of \mnum macro. 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 ___
[NTG-context] [OT] intelligent commas in math (in LaTeX)
http://tug.org/pracjourn/2011-1/beccari.html ___ 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 ___
