[NTG-context] Fonts and equations

Henri Menke henrimenke at gmail.com
Fri May 18 08:55:14 CEST 2018

On 17/05/18 23:19, Lance Larsen wrote:
> I have a context document with several equations. One really nice 
> feature with equations is that by default you can search for variable 
> names in equation in a PDF reader like acrobat. However, I needed to 
> configure the document to use arial for the text. Once I do this, the 
> equations are no longer searchable. I assume something happened to the 
> mathematics font. How to I change the font for the document text, but 
> keep the math equations searchable? Is there a way to change the 
> document font, but not affect the math font? Here is a sample of how I 
> configured the font. The equations are no longer searchable.
> % Load the Arial font values for regular, italics, bold, etc.
> \starttypescript [serif] [arial]
>    \definefontsynonym [Serif]               [name:arial]
>    \definefontsynonym [SerifBold]           [name:arialbold]
>    \definefontsynonym [SerifItalic]         [name:arialitalic]
>    \definefontsynonym [SerifSlanted]        [name:arialitalic]
>    \definefontsynonym [SerifBoldItalic]     [name:arialbolditalic]
>    \definefontsynonym [SerifBoldSlanted]    [name:arialbolditalic]
>    \definefontsynonym [SerifCaps]           [name:arial]
> \stoptypescript
> % Now we define the 'arial' font as an available option
> \definetypeface [arial]    [rm] [serif] [arial]

The typeface "arial" you defined has no math font (and no sans and no 
mono font).  Add those and you should be fine:

\definetypeface [arial] [rm] [serif] [arial]
\definetypeface [arial] [ss] [sans]  [modern]
\definetypeface [arial] [tt] [mono]  [modern]
\definetypeface [arial] [mm] [math]  [modern]

> % Set 'arial' 10pt as the default font for the document
> \setupbodyfont [arial,rm,10pt]
> \starttext
> $z_1 = x_1 + y_1$
> $a = b + c$
> \stoptext
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