local dimensions, kerns  if CONTEXTLMTXMODE == 0 then

 -- local kern_250 = { bottomright = { { kern = -250 } }, force = true }


 -- kerns = {
 --     [0x1D449] = kern_250, --
 --     [0x1D44A] = kern_250, -- 𝑊
 -- }

    dimensions = {
        default = { -- experimental values
--             [0x02044] = { xoffset = 275, width = 600 },
            -- primes
            [0xFE932] = { width =  200 },
            [0xFE933] = { width =  500 },
            [0xFE934] = { width =  800 },
            [0xFE935] = { width = 1100 },
            -- reverse primes
            [0xFE935] = { width =  200 },
            [0xFE936] = { width =  500 },
            [0xFE937] = { width =  800 },
        },
    }

end

return {
    name = "lucida-opentype-math",
    version = "1.00",
    comment = "Goodies that complement lucida opentype.",
    author = "Hans Hagen & Mikael Sundqvist",
    copyright = "ConTeXt development team",
    mathematics = {
        parameters = {
            RadicalDisplayStyleVerticalGap = 100,
            NoLimitSupFactor               =   0,
            NoLimitSubFactor               = 900,
            FractionRuleThickness          =  55,
            AccentBaseHeight               = 650,
            AccentBaseDepth                = 150,
        },
        tweaks = {
            aftercopying = {
                {
                    tweak    = "version",
                    expected = "Version 1.802",
                },
                {
                    tweak = "dimensions",
                    list  = {
                        -- these we fix here
                        ["0x23DC.parts.1"]  = { xoffset = -0.075, height = .4, yoffset = -0.6 },
                        ["0x23DC.parts.2"]  = {                   height = .4, yoffset = -0.6 },
                        ["0x23DC.parts.3"]  = { xoffset =  0.075, height = .4, yoffset = -0.6 },
                        ["0x23DD.parts.1"]  = { xoffset = -0.075, depth  = .8, yoffset =  0.2 },
                        ["0x23DD.parts.2"]  = {                   depth  = .8, yoffset =  0.2 },
                        ["0x23DD.parts.3"]  = { xoffset =  0.075, depth  = .8, yoffset =  0.2 },
                        -- these are done later using the AccentBase* parameters
                     -- [0x23DC]  = { height = .2, yoffset = -0.8 },
                     -- [0x23DD]  = { depth  = .6, yoffset =  0.4 },
                    },
                },
             {
               tweak   = "fixprimes",
               factor  = 0.9, -- accent base height
            --    smaller = true, -- replace multiples
               scale   = 1, -- glyph scale
            --    fake    = 0.65, -- replace multiples with this width proportion
            -- keep    = true, -- keep the text size prime (aka minute)
             },
                {
                    tweak = "checkspacing",
                },
                {
                    tweak = "addscripts",
                },
                {
                    tweak = "accentdimensions",
                },
                {
                    tweak = "addrules",
                },
            },
        },
        alternates = {
            italic       = { feature = 'ss01', value = 1, comment = "Mathematical Alternative Lowercase Italic" },
            arrow        = { feature = 'ss02', value = 1, comment = "Mathematical Alternative Smaller Arrows" },
            operator     = { feature = 'ss03', value = 1, comment = "Mathematical Alternative Smaller Operators" },
            calligraphic = { feature = 'ss04', value = 1, comment = "Mathematical Alternative Calligraphic Characters" },
            zero         = { feature = 'ss05', value = 1, comment = "Mathematical Alternative Zero" },
            partial      = { feature = 'ss20', value = 1, comment = "Mathematical Alternative Upright Partial Differential" },
        },
        bigslots = {
            1, 2, 3, 4
        },
        --
        -- experimental fixes for mkiv:
        --
        dimensions = dimensions,
        kerns = kerns,
    },
}