Re: doublestroke

[Hans Hagen <pragma@wxs.nl>]

On 12/26/2013 9:09 AM, Wolfgang Schuster wrote:
>
> Am 26.12.2013 um 01:01 schrieb Elspeth McGullicuddy <elspethmcgullicuddy@gmail.com>:
>
>> Hi,
>> I hopped you all had a merry Christmas :-)
>>
>> In the very first working example:
>>
>> \definefontfamily     [mainface] [rm] [Latin Modern Roman]
>> \definefallbackfamily [mainface] [mm] [TeX Gyre Termes Math]
>> [range={uppercasedoublestruck}]  %%%,letterlikesymbols}]
>> \definefontfamily     [mainface] [mm] [Latin Modern Math]
>> \setupbodyfont[mainface]
>> \starttext
>> \startformula
>> ABC \quad {\blackboard AB[C]DEFG[H]IJKLM[N]O[PQR]STUVWXY[Z]}
>> \stopformula
>> \stoptext
>>
>> letters here in brackets weren't rendered as expected... Because there
>> are "holes
>> in the uft table" as can be seen there:
>> http://www.w3.org/TR/MathML2/double-struck.html
>>
>> Adding the "bloks" "letterlikesymbols" was, to an extent solving the problem.
>> Now in my document I am also using calligraphic letters which I want
>> to remain in "modern".
>>
>> 1- WHAT DIDN'T WORK:
>> First idea that comes to me is modifying the file: math-act.lua
>>
>> I have added all the lines that are commented out here.
>>
>> blocks["uppercasedoublestruck"]               = { first = 0x1D538,
>> last = 0x1D550 } %0x1D551 is not attributed
>> %blocks["uppercasedoublestruckc"]               = { first = 0x02102,
>> last = 0x02102 } %
>> %blocks["uppercasedoublestruckh"]               = { first = 0x0210D,
>> last = 0x0210D } %
>> %blocks["uppercasedoublestruckn"]               = { first = 0x02115,
>> last = 0x02115 } %
>> %blocks["uppercasedoublestruckp"]               = { first = 0x02119,
>> last = 0x02119 } %
>> %blocks["uppercasedoublestruckq"]               = { first = 0x0211A,
>> last = 0x0211A } %
>> %blocks["uppercasedoublestruckr"]               = { first = 0x0211D,
>> last = 0x0211D } %
>> %blocks["uppercasedoublestruckz"]               = { first = 0x02124,
>> last = 0x02124 } %
>>
>> It just didn't work. Compiled but fail to provided expected result:
>> Everything was in modern.
>>
>> 2- WHAT WORKED
>>
>> \definefontfamily     [mainface] [rm] [Latin Modern Roman]
>> \definefallbackfamily [mainface] [mm] [TeX Gyre Termes Math]
>>
>> [range={uppercasedoublestruck,0x02102,0x0210D,0x02115,0x02119,0x0211A,0x0211D,0x02124}]
>> \definefontfamily     [mainface] [mm] [Latin Modern Math]
>> \setupbodyfont[mainface]
>> \starttext
>> \startformula
>> \int_a^b \quad ABC \quad {\blackboard AB[C]DEFG[H]IJKLM[N]O[PQR]STUVWXY[Z]}
>> \stopformula
>> \stoptext
>>
>> 3-QUESTION
>>
>> Unless I'm completely wrong, the modification I've made to the file:
>> math-act.lua
>> haven't been taken into account at all:
>> even if I modify the line "uppercasedoublestruck" such as to reduce the range:
>>
>> blocks["uppercasedoublestruck"]               = { first = 0x1D538,
>> last = 0x1D540 }
>>
>> my \blackboard UVXY keep to be rendered with term...
>>
>> So why?
>
> 1. When you make a change in the code you have to remake the format file (context —make en).
>
> 2. When you write many lines in the form “blocks[<name>] = { first=…, last=… }”  you do only replace the previous setting but don’t add new entries to the table.
>
> 3. Part of the problem is mess in unicode because the symbols you need are scattered, see http://www.unicode.org/charts/PDF/U1D400.pdf and here http://www.unicode.org/charts/PDF/U2100.pdf

I now support 'gaps' (blocks have a gaps entry). Beta uploaded.

Hans

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                                           Hans Hagen | PRAGMA ADE
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