Re: doublestroke

[Wolfgang Schuster <schuster.wolfgang@gmail.com>]

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

Wolfgang
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