On Thu, Jul 20, 2017 at 2:53 PM, Hans Hagen <pragma@wxs.nl> wrote:
> On 7/20/2017 7:18 AM, Mikael P. Sundqvist wrote:
>
>> Den 12 juli 2017 10:17 fm skrev "Mikael P. Sundqvist" <mickep@gmail.com
>> <mailto:mickep@gmail.com>>:
>>
>>     Dear Hans,
>>
>>     now, in luatex 1.05, that the primes are "constructed" in new manner,
>>     I wonder if there is a way to specify in a goodie file the kerning
>>     between characters, in particular primes and the left parenthesis?
>>
>>     I tried
>>
>>              kernpairs = {
>>                 [0x2032] = {[0x0028] = -1000, }, -- prime and (
>>              },
>>
>>     but that does not seem to have any effect.
>>
>>     The pre-1.05 modification
>>
>>              dimensions = {
>>                  default = {
>>                      [0x2044] = { xoffset = 275, width = 600 },
>>                      [0x2032] = { xoffset = 50, width = 290 }, -- prime
>>                      [0x2033] = { xoffset = 50, width = 690 }, -- double
>>     prime
>>                      [0x2034] = { xoffset = 50, width = 1090}, -- triple
>>     prime
>>                      [0x2057] = { xoffset = 50, width = 1490}, --
>>     quadruple prime
>>              },
>>          },
>>
>>     (which is a non-optimal way of solving this issue since it has side
>>     effects) does not change anything anymore.
>>
>>     So, is there now a way to do this cleanly now that the mechanism is
>>     changed?
>>
>>     /Mikael
>>
>>
>> Hi,
>>
>> should I interpret the silence that this is currently not possible, or
>> that you, Hans, is completely fed up with this subject? :-)
>
> you rule out the possibility that i have other things to do
>
> anyway, use
>
>     0xFE932
>
> etc instead as primes get remapped
>
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I'm sorry but I cannot get it to work.

%%% my local lucida-opentype-math.lfg, located in the same directory
as the tex file (and loaded)
----- kern_250 = { bottomright = { { kern = -250 } }, force = true }

local function FixRadicalDisplayStyleVerticalGap(value,target,original)
    local o = original.mathparameters.RadicalVerticalGap -- 50
    return 2 * o * target.parameters.factor
end

return {
    name = "lucida-opentype-math",
    version = "1.00",
    comment = "Goodies that complement lucida opentype.",
    author = "Hans Hagen",
    copyright = "ConTeXt development team",
    mathematics = {
        parameters = {
            RadicalDisplayStyleVerticalGap = FixRadicalDisplayStyleVerticalGap,
        },
        kernpairs = {
           [0x1D44E] = {[0x1D44F] = 1000,}, -- 𝑎𝑏 demo
           [0xFE932] = {[0x0028] = 1000,} -- remapped prime and (
        },
}
}
%%%

%%% the tex file
\setupbodyfont[lucidaot]
\setupmathematics[kernpairs=yes]

\starttext
$f'(x)ab$
\stoptext
%%%

The result is attached. It works ok for the pair ab, but not for prime
and (. Is the ( also remapped (while greping for it in the source, I
could not find any clue).

Maybe it is better to ping the maintainers of the font?

/Mikael