* Missing °C symbol in math mode with dejavu font
@ 2013-05-20 20:29 Romain Diss
2013-05-20 20:57 ` Alan BRASLAU
0 siblings, 1 reply; 10+ messages in thread
From: Romain Diss @ 2013-05-20 20:29 UTC (permalink / raw)
To: ntg-context
Hi all,
The °C symbol is missing in math mode with the dejavu font. I thought that
this should be handled by using the '°' + 'C' symbols instead but it is not
the case.
Is that a bug?
What can I do to get the °C symbol with this font?
%% MWE
\setupbodyfont[dejavu]
\starttext
Temperature : \unit{100 celsius} works.\par
Temperature : \m{\unit{100 celsius}} doesn't work.
\stoptext
--
Romain Diss
<romain.diss@yahoo.fr>
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-20 20:29 Missing °C symbol in math mode with dejavu font Romain Diss
@ 2013-05-20 20:57 ` Alan BRASLAU
2013-05-20 21:03 ` Khaled Hosny
2013-05-20 21:04 ` Romain Diss
0 siblings, 2 replies; 10+ messages in thread
From: Alan BRASLAU @ 2013-05-20 20:57 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Mon, 20 May 2013 22:29:22 +0200
Romain Diss <romain.diss@yahoo.fr> wrote:
> The °C symbol is missing in math mode with the dejavu font. I thought
> that this should be handled by using the '°' + 'C' symbols instead
> but it is not the case.
> Is that a bug?
> What can I do to get the °C symbol with this font?
With dejavu, A, B, and D all work, but C is missing a symbol.
A 100℃
B 100°C
C $100℃$
D $100°C$
Alan
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-20 20:57 ` Alan BRASLAU
@ 2013-05-20 21:03 ` Khaled Hosny
2013-05-20 21:04 ` Romain Diss
1 sibling, 0 replies; 10+ messages in thread
From: Khaled Hosny @ 2013-05-20 21:03 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Mon, May 20, 2013 at 10:57:16PM +0200, Alan BRASLAU wrote:
> On Mon, 20 May 2013 22:29:22 +0200
> Romain Diss <romain.diss@yahoo.fr> wrote:
>
> > The °C symbol is missing in math mode with the dejavu font. I thought
> > that this should be handled by using the '°' + 'C' symbols instead
> > but it is not the case.
> > Is that a bug?
> > What can I do to get the °C symbol with this font?
>
> With dejavu, A, B, and D all work, but C is missing a symbol.
>
> A 100℃
>
> B 100°C
>
> C $100℃$
Since this is compatibility character, I think ConTeXt should just
degree + plain capital C.
Regards,
Khaled
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-20 20:57 ` Alan BRASLAU
2013-05-20 21:03 ` Khaled Hosny
@ 2013-05-20 21:04 ` Romain Diss
2013-05-20 21:13 ` Wolfgang Schuster
1 sibling, 1 reply; 10+ messages in thread
From: Romain Diss @ 2013-05-20 21:04 UTC (permalink / raw)
To: mailing list for ConTeXt users
Le lundi 20 mai 2013, Alan BRASLAU a écrit :
> On Mon, 20 May 2013 22:29:22 +0200
> Romain Diss <romain.diss@yahoo.fr> wrote:
> > The °C symbol is missing in math mode with the dejavu font. I thought
> > that this should be handled by using the '°' + 'C' symbols instead
> > but it is not the case.
> > Is that a bug?
> > What can I do to get the °C symbol with this font?
> With dejavu, A, B, and D all work, but C is missing a symbol.
> A 100℃
> B 100°C
> C $100℃$
> D $100°C$
The question is: do \unit is supposed to handle this case and automatically
switch from C to D if C is missing.
If not, how can I tell \unit that C is missing and that I want \unit{celsius}
to use D?
Thanks
--
Romain Diss
<romain.diss@yahoo.fr>
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-20 21:04 ` Romain Diss
@ 2013-05-20 21:13 ` Wolfgang Schuster
2013-05-20 21:22 ` Khaled Hosny
0 siblings, 1 reply; 10+ messages in thread
From: Wolfgang Schuster @ 2013-05-20 21:13 UTC (permalink / raw)
To: mailing list for ConTeXt users
Am 20.05.2013 um 23:04 schrieb Romain Diss <romain.diss@yahoo.fr>:
> Le lundi 20 mai 2013, Alan BRASLAU a écrit :
>> On Mon, 20 May 2013 22:29:22 +0200
>> Romain Diss <romain.diss@yahoo.fr> wrote:
>>> The °C symbol is missing in math mode with the dejavu font. I thought
>>> that this should be handled by using the '°' + 'C' symbols instead
>>> but it is not the case.
>>> Is that a bug?
>>> What can I do to get the °C symbol with this font?
>> With dejavu, A, B, and D all work, but C is missing a symbol.
>> A 100℃
>> B 100°C
>> C $100℃$
>> D $100°C$
> The question is: do \unit is supposed to handle this case and automatically
> switch from C to D if C is missing.
> If not, how can I tell \unit that C is missing and that I want \unit{celsius}
> to use D?
Hans can add a check for math mode for the symbol:
\unprotect
\unexpanded\def\checkedtextcelsius
{\ifmmode
\phys_units_text_celsius
\else\iffontchar\font"2103\relax
℃\else\phys_units_text_celsius
\fi\fi}
\unexpanded\def\checkedtextfahrenheit
{\ifmmode
\phys_units_text_fahrenheit
\else\iffontchar\font"2109\relax
℉\else\phys_units_text_fahrenheit
\fi\fi}
\protect
\setupbodyfont[dejavu]
\starttext
Temperature : \unit{100 celsius} works.\par
Temperature : \m{\unit{100 celsius}} doesn't work.
\stoptext
Wolfgang
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-20 21:13 ` Wolfgang Schuster
@ 2013-05-20 21:22 ` Khaled Hosny
2013-05-20 21:36 ` Khaled Hosny
0 siblings, 1 reply; 10+ messages in thread
From: Khaled Hosny @ 2013-05-20 21:22 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Mon, May 20, 2013 at 11:13:16PM +0200, Wolfgang Schuster wrote:
>
> Am 20.05.2013 um 23:04 schrieb Romain Diss <romain.diss@yahoo.fr>:
>
> > Le lundi 20 mai 2013, Alan BRASLAU a écrit :
> >> On Mon, 20 May 2013 22:29:22 +0200
> >> Romain Diss <romain.diss@yahoo.fr> wrote:
> >>> The °C symbol is missing in math mode with the dejavu font. I thought
> >>> that this should be handled by using the '°' + 'C' symbols instead
> >>> but it is not the case.
> >>> Is that a bug?
> >>> What can I do to get the °C symbol with this font?
> >> With dejavu, A, B, and D all work, but C is missing a symbol.
> >> A 100℃
> >> B 100°C
> >> C $100℃$
> >> D $100°C$
> > The question is: do \unit is supposed to handle this case and automatically
> > switch from C to D if C is missing.
> > If not, how can I tell \unit that C is missing and that I want \unit{celsius}
> > to use D?
>
>
> Hans can add a check for math mode for the symbol:
>
> \unprotect
>
> \unexpanded\def\checkedtextcelsius
> {\ifmmode
> \phys_units_text_celsius
> \else\iffontchar\font"2103\relax
> ℃\else\phys_units_text_celsius
> \fi\fi}
>
> \unexpanded\def\checkedtextfahrenheit
> {\ifmmode
> \phys_units_text_fahrenheit
> \else\iffontchar\font"2109\relax
> ℉\else\phys_units_text_fahrenheit
> \fi\fi}
>
> \protect
My suggestion is to just use \phys_units_text_* always, since the
decomposed, two characters is the preferred form for those two units.
Regards,
Khaled
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-20 21:22 ` Khaled Hosny
@ 2013-05-20 21:36 ` Khaled Hosny
2013-05-21 8:01 ` Hans Hagen
0 siblings, 1 reply; 10+ messages in thread
From: Khaled Hosny @ 2013-05-20 21:36 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Mon, May 20, 2013 at 11:22:41PM +0200, Khaled Hosny wrote:
>
> My suggestion is to just use \phys_units_text_* always, since the
> decomposed, two characters is the preferred form for those two units.
“In normal use, it is better to represent degrees Celsius ‘°C’ with a
sequence of U+00B0 DEGREE SIGN + U+0043 LATIN CAPITAL LETTER C, rather
than U+2103 DEGREE CELSIUS. For searching, treat these two sequences as
identical. Similarly, the sequence U+00B0 DEGREE SIGN + U+0046 LATIN
CAPITAL LETTER F is preferred over U+2109 DEGREE FAHRENHEIT, and those
two sequences should be treated as identical for searching.”
http://www.unicode.org/versions/Unicode6.2.0/ch15.pdf#G20445
Regards,
Khaled
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-20 21:36 ` Khaled Hosny
@ 2013-05-21 8:01 ` Hans Hagen
2013-05-21 8:09 ` Khaled Hosny
0 siblings, 1 reply; 10+ messages in thread
From: Hans Hagen @ 2013-05-21 8:01 UTC (permalink / raw)
To: ntg-context
On 5/20/2013 11:36 PM, Khaled Hosny wrote:
> On Mon, May 20, 2013 at 11:22:41PM +0200, Khaled Hosny wrote:
>>
>> My suggestion is to just use \phys_units_text_* always, since the
>> decomposed, two characters is the preferred form for those two units.
>
> “In normal use, it is better to represent degrees Celsius ‘°C’ with a
> sequence of U+00B0 DEGREE SIGN + U+0043 LATIN CAPITAL LETTER C, rather
> than U+2103 DEGREE CELSIUS. For searching, treat these two sequences as
> identical. Similarly, the sequence U+00B0 DEGREE SIGN + U+0046 LATIN
> CAPITAL LETTER F is preferred over U+2109 DEGREE FAHRENHEIT, and those
> two sequences should be treated as identical for searching.”
>
> http://www.unicode.org/versions/Unicode6.2.0/ch15.pdf#G20445
Searching should be ok due to the tonunicode that mentions the two
characters ... how about the visual aspect? Should we care about?
It's no problem to make an option to always use the split version.
Hans
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-21 8:01 ` Hans Hagen
@ 2013-05-21 8:09 ` Khaled Hosny
2013-05-21 12:01 ` Arthur Reutenauer
0 siblings, 1 reply; 10+ messages in thread
From: Khaled Hosny @ 2013-05-21 8:09 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Tue, May 21, 2013 at 10:01:30AM +0200, Hans Hagen wrote:
> On 5/20/2013 11:36 PM, Khaled Hosny wrote:
> >On Mon, May 20, 2013 at 11:22:41PM +0200, Khaled Hosny wrote:
> >>
> >>My suggestion is to just use \phys_units_text_* always, since the
> >>decomposed, two characters is the preferred form for those two units.
> >
> >“In normal use, it is better to represent degrees Celsius ‘°C’ with a
> > sequence of U+00B0 DEGREE SIGN + U+0043 LATIN CAPITAL LETTER C, rather
> > than U+2103 DEGREE CELSIUS. For searching, treat these two sequences as
> > identical. Similarly, the sequence U+00B0 DEGREE SIGN + U+0046 LATIN
> > CAPITAL LETTER F is preferred over U+2109 DEGREE FAHRENHEIT, and those
> > two sequences should be treated as identical for searching.”
> >
> > http://www.unicode.org/versions/Unicode6.2.0/ch15.pdf#G20445
>
> Searching should be ok due to the tonunicode that mentions the two
> characters ... how about the visual aspect? Should we care about?
I think for ConTeXt purposes we should just ignore the composed form, it
is there only for compatibility with some legacy CJK encodings and their
use is almost discouraged. If user enters those code points directly,
then he on his own, so nothing to be done here either.
In short, this is just some of the compatibility nonsense crippling
Unicode, we are better off pretending they do not exist
Regards,
Khaled
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* Re: Missing °C symbol in math mode with dejavu font
2013-05-21 8:09 ` Khaled Hosny
@ 2013-05-21 12:01 ` Arthur Reutenauer
0 siblings, 0 replies; 10+ messages in thread
From: Arthur Reutenauer @ 2013-05-21 12:01 UTC (permalink / raw)
To: Mailing list for ConTeXt users
> In short, this is just some of the compatibility nonsense crippling
> Unicode, we are better off pretending they do not exist
Second that.
Arthur
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Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-05-20 20:29 Missing °C symbol in math mode with dejavu font Romain Diss
2013-05-20 20:57 ` Alan BRASLAU
2013-05-20 21:03 ` Khaled Hosny
2013-05-20 21:04 ` Romain Diss
2013-05-20 21:13 ` Wolfgang Schuster
2013-05-20 21:22 ` Khaled Hosny
2013-05-20 21:36 ` Khaled Hosny
2013-05-21 8:01 ` Hans Hagen
2013-05-21 8:09 ` Khaled Hosny
2013-05-21 12:01 ` Arthur Reutenauer
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