Re: [NTG-context] substituting characters in math font

Many thanks for this, Wolfgang. That is very helpful. Right now, then, I have: \definefontfamily[mainface][rm][Brill] [protrusion=quality, expansion=quality, mode=node, force=yes, ] \definefallbackfamily [mainface] [rm] [Brill] [tf=style:italic, range={0x03B8}, offset={0x03D1}]%Greek theta \definefallbackfamily[mainface][mm][Brill] [range={0x30-0x39}] %oldstyle numerals, normal \definefallbackfamily [mainface] [mm] [Brill] [preset=math:lowercasenormal] \definefallbackfamily [mainface] [mm] [BrillItalic] [preset=math:lowercaseitalic] \definefallbackfamily [mainface] [mm] [Brill] [preset=math:uppercasenormal] \definefallbackfamily [mainface] [mm] [BrillItalic] [preset=math:uppercaseitalic] \definefallbackfamily [mainface] [mm] [Brill] [preset=math:lowercasegreeknormal] \definefallbackfamily [mainface] [mm] [BrillItalic] [preset=math:lowercasegreekitalic] \definefallbackfamily [mainface] [mm] [Brill][preset=math:uppercasegreeknormal] \definefallbackfamily [mainface] [mm] [BrillItalic] [preset=math:uppercasegreekitalic] \definefontfamily[mainface][mm][TeX Gyre Termes Math][scale=0.94] \setupmathematics[ucgreek=normal, lcgreek=italic] \setupbodyfont[mainface,10pt] \starttext normal: 1234567890\quad math: \m{1234567890} normal: ABCDEFabcdef\quad italic: \emph{ABCDEFabcdef}\quad math: \m{\red ABCDEFabcdef} normal: ΑΒΓΔΕΘαβγδεθ\quad slanted: \emph{ΑΒΓΔΕΘαβγδεθ}\quad math: \m{\red ΑΒΓΔΕΘαβγδεθ} Greek theta: \emph{θ} \stoptext As you can see, all I need is to get the Brill lowercase Greek in mathmode and the proper slanted Greek theta. I have tried this with Pagella and Cambria instead of the Brill font and the problem persists. So I must be doing something wrong. But what? Alan On Wed, Oct 18, 2017 at 2:27 PM, Wolfgang Schuster < schuster.wolfgang@gmail.com> wrote:

Alan Bowen 2. Oktober 2017 um 14:04 I need to substitute the regular and italic characters of a publisher’s non-math font (Unicode) for those in a math font.

The non-math addresses are: 0041-005A, 0061-007A %italic uppercase and lowercase 0391-03A9, 03B1-03C9 %slanted Greek uppercase and lowercase

The math addresses are: 1D434-1D44D, 1D44E-1D467 %italic uppercase and lowercase 1D6E2-1D6FA, 1D6FC-1D714 %slanted Greek uppercase and lowercase

Is there a way to use the \definefallbackfamily mechanism that does not assume that the characters have the same Unicode addresses? Or is some other approach required?

The fallback mechanism provides a offset key which lets you replace a math character with a normal text character.

\definefontfamily [mainface] [ss] [TeX Gyre Heros]

\definefallbackfamily [mainface] [mm] [TeX Gyre Heros] [preset=math:lowercasenormal] \definefallbackfamily [mainface] [mm] [TeX Gyre Heros] [preset=math:lowercaseitalic] \definefallbackfamily [mainface] [mm] [TeX Gyre Heros] [tf=style:italic,range=0x68,offset=0x210E]% lowercase italic h \definefallbackfamily [mainface] [mm] [TeX Gyre Heros] [preset=math:lowercasebold] \definefallbackfamily [mainface] [mm] [TeX Gyre Heros] [preset=math:uppercasenormal] \definefallbackfamily [mainface] [mm] [TeX Gyre Heros] [preset=math:uppercaseitalic] \definefallbackfamily [mainface] [mm] [TeX Gyre Heros] [preset=math:uppercasebold]

\definefontfamily [mainface] [mm] [TeX Gyre Pagella Math]

\starttext

\setupbodyfont[pagella]

Lowercase: $ {\tf abc} {\it abc} {\bf abc} $

Uppercase: $ {\tf ABC} {\it ABC} {\bf ABC} $

\setupbodyfont[mainface]

Lowercase: $ {\tf abc} {\it abch} {\bf abc} $

Uppercase: $ {\tf ABC} {\it ABC} {\bf ABC} $

\stoptext

Wolfgang

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