On 12/10/2014 8:15 PM, Pablo Rodriguez wrote:
On 12/09/2014 12:07 AM, Hans Hagen wrote:
On 12/8/2014 5:47 PM, Pablo Rodriguez wrote:
[..]
And sorry for asking this again, but I need underscore hyphenation with
the underscore character from the font and only for the \tex and
\hyphenatedurl commands (not for the rest of the text).
[...]

just a variant of the addfunyhyphen:

Many thanks for your sample, Hans.

It really works great.

Sorry for asking this again: would it be possible to add this feature
also to \hyphenatedurl.

I’m composing a book on A6 and it is really hard to add some urls.

some code from an upcoming manual:

\startluacode
    local specials = {
        ["!"]  = "before", ["?"]  = "before",
        ['"']  = "before", ["'"]  = "before",
        ["/"]  = "before", ["\\"] = "before",
        ["#"]  = "before",
        ["$"]  = "before",
        ["%"]  = "before",
        ["&"]  = "before",
        ["*"]  = "before",
        ["+"]  = "before", ["-"]  = "before",
        [","]  = "before", ["."]  = "before",
        [":"]  = "before", [";"]  = "before",
        ["<"]  = "before", [">"]  = "before",
        ["="]  = "before",
        ["@"]  = "before",
        ["("]  = "before",
        ["["]  = "before",
        ["{"]  = "before",
        ["^"]  = "before", ["_"]  = "before",
        ["`"]  = "before",
        ["|"]  = "before",
        ["~"]  = "before",
        --
        [")"]  = "after",
        ["]"]  = "after",
        ["}"]  = "after",
    }

    languages.hyphenators.traditional.installmethod("url",
        function(dictionary,word,n)
            local t = { }
            for i=1,#word do
                local w = word[i]
                local s = specials[w]
                if s == "after" then
                    s = {
                        start  = 1,
                        length = 1,
                        after  = w,
                        left   = false,
                        right  = false,
                    }
                    specials[w] = s
                elseif s == "before" then
                    s = {
                        start  = 1,
                        length = 1,
                        before = w,
                        left   = false,
                     -- right  = false,
                    }
                    specials[w] = s
                end
                t[i] = s or false
            end
            return t
        end
    )
\stopluacode

\startluacode

    function document.addfunnyhyphen(tfmdata)
        local underscore = utf.byte("_")
        local char       = tfmdata.characters[underscore]
        tfmdata.characters[0xFE000]   = {
            width    = 0,
            height   = 0,
            depth    = 0,
            commands = {
                { "right", -char.width },
                { "down", char.depth },
                { "slot", 1, underscore },
            }
        }
    end


utilities.sequencers.appendaction("aftercopyingcharacters","after","document.addfunnyhyphen")

\stopluacode

\definehyphenationfeatures
  [url]
  [characters=all,
   righthyphenchar="FE000,
   alternative=url]

\setuphyphenation[method=traditional]

\unexpanded\def\hyphenatedurl#1%
  {\dontleavehmode
   \begingroup
   \tt
   \sethyphenationfeatures[url]%
   #1%
   \endgroup}

\starttext

\hsize5mm
\hyphenatedurl{http://www.pragma-ade.nl}

\stoptext



Many thanks for your help again,


Pablo


\startluacode

       function document.addfunnyhyphen(tfmdata)
           local underscore = utf.byte("_")
           local char       = tfmdata.characters[underscore]
        -- logs.report("fonts","adding funny hyphen to font
%a",tfmdata.properties.fontname)
           tfmdata.characters[0xFE000]   = {
               width    = 0,
               height   = 0,
               depth    = 0,
               commands = {
                   { "right", -char.width },
                   { "down", char.depth },
                   { "slot", 1, underscore },
               }
           }
       end


utilities.sequencers.appendaction("aftercopyingcharacters","after","document.addfunnyhyphen")

\stopluacode

\definefontfeature[default][default][funnyhyphen=yes]
\definefontfeature[always] [always] [funnyhyphen=yes]
\definefontfeature[none]   [none]   [funnyhyphen=yes]

\definetype
       [TeXcode]
       [option=TEX,
        compact=absolute,
        lines=hyphenated]

\definehyphenationfeatures
       [whatever]
       [righthyphenchar="FE000]

\setuphyphenation
       [method=traditional]

\unexpanded\def\TexC#1%
       {\dontleavehmode\begingroup
        \sethyphenationfeatures[whatever]%
      % \prehyphenchar"FE000
        \normalexpanded{\TeXcode{\letterbackslash#1}}%
        \endgroup}

\starttext
         \input tufte
         \dorecurse{100}{\TexC{definebodyfont} }
         \input tufte
\stoptext

we can add some of them but first i need to think about what slots to
use (shouldn't conflict with other private slots)






--

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                                          Hans Hagen | PRAGMA ADE
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                                             | www.pragma-pod.nl
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