Re: [NTG-context] Bug in verbatim wrapping examples on wiki

5 Feb 2023


      On 2/5/2023 12:32 PM, Pablo Rodriguez via ntg-context wrote:
...
On 2/4/23 10:37, Pablo Rodriguez via ntg-context wrote:
...
On 2/4/23 07:49, Hugo Landau via ntg-context wrote:
...
On this page of the wiki there is an example for wrapping long words,
like long hexadecimal strings:
https://wiki.contextgarden.net/Wrapping
This example is buggy because it deletes one character at the point that
it is wrapped.
Anyone have a solution?
Many thanks for your report, Hugo.
I use this code from time to time and I totally overlooked this.
Have you checked all options that the sample contains?
Hans,
I have just checked that these line breakings loose a character in all
options.
The next sample displays the issue clearly:
\startluacode
--local shared = {
         --    start  = 1,
         --    length = 1,
         --    left   = false,
         --    right  = false,
         --}
local shared = {
            start  = 1,
            length = 1,
            before = utf.char(0xB7),
            after  = nil,
            left   = false,
            right  = false,
        }
-- languages.hyphenators.traditional.installmethod("sha",
        --     function(dictionary,word,n)
        --         local t = { }
        --         for i=1,#word do
        --             t[i] = shared
        --         end
        --         return t
        --     end
        -- )
-- or more efficient when used often:
-- local all = { }
        -- for i=1,512 do
        --     all[i] = shared
        -- end
        -- languages.hyphenators.traditional.installmethod("sha",
        --     function(dictionary,word,n)
        --         return all
        --     end
        -- )
-- or more obscure:
-- local all = table.setmetatableindex({ }, function(t,k)
        --     t[k] = shared
        --     return shared
        -- end)
        --
        -- languages.hyphenators.traditional.installmethod("sha",
        --     function(dictionary,word,n)
        --         return all
        --     end
        -- )
-- or just (lua is fast enough anyway)
local all = table.setmetatableindex({ }, function(t,k)
            return shared
        end)
languages.hyphenators.traditional.installmethod("sha",
            function(dictionary,word,n)
                return all
            end
        )
   \stopluacode
\definehyphenationfeatures
      [sha]
      [characters=all,
       alternative=sha]
\unexpanded\def\sha#1%
      {\begingroup
       \sethyphenationfeatures[sha]%
       #1%
       \endgroup}
\setuphyphenation[method=traditional]
%
%  \unexpanded\def\sha#1%
%     {\begingroup
%      \sethyphenationfeatures[sha]%
%      \setuphyphenation[method=traditional]%
%      #1%
%      \endgroup}
\starttext
   \hyphenatedword{\sha{8b2f3c087046c3943ace0dc4f958ef2138e58a51b40e%
   ef6fab6fa1aeb845cc257a410ab1b914bc399b4293f%
   31c76fc2c73e5be5ea4d329f9e6820984688efec2}}
   \stoptext
Are we missing something or is this a bug?
what do you expect as result? (maybe try \righthyphenmin=1)
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