Re: [NTG-context] Kerning between primes and left parenthesis (again)

31 Jul 2017

      On Mon, Jul 31, 2017 at 5:37 PM, Hans Hagen  wrote:
...
On 7/31/2017 11:21 AM, Mikael P. Sundqvist wrote:
...
On Thu, Jul 20, 2017 at 2:53 PM, Hans Hagen  wrote:
...
On 7/20/2017 7:18 AM, Mikael P. Sundqvist wrote:
...
Den 12 juli 2017 10:17 fm skrev "Mikael P. Sundqvist" 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
-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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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?
just change the dimensions
dimensions = {
            default = { -- experimental values
                [0x2044] = { xoffset = 275, width = 600 },
             -- [0x2032] = { yoffset = -10 },
[0xFE932] = { width = 200 },
[0xFE933] = { width = 500 },
[0xFE934] = { width = 800 },
            },
        },
-----------------------------------------------------------------
                                          Hans Hagen | PRAGMA ADE
              Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
       tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to
the Wiki!
maillist : ntg-context@ntg.nl /
http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________
Dear Hans,

thank you, that solution worked well! May I suggest to add something like

        dimensions = {
            default = {
              [0xFE932] = { width = 150 }, -- prime
              [0xFE933] = { width = 435 }, -- double prime
              [0xFE934] = { width = 720 }, -- triple prime
              [0xFE957] = { width = 1005 }, -- quadruple prime
            },
        },

(or the values 200, 500, 800, 1100 if you prefer) to the font goodie
file for lucida in the distribution?

Again, thanks for your time, it is very much appreciated.

/Mikael