Dear list,
I have been experiencing an issue with the new hyphenator for months (or
maybe almost a year), but it took me a while to discover what was
triggering it.
First, the mandatory sample:
\startluacode
function document.addfunnyhyphen(tfmdata)
local underscore = utf.byte("_")
local char = tfmdata.characters[underscore]
if not char then return end
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")
local shared = {
start = 1,
length = 1,
before = utf.char(0xFE000),
after = nil,
left = false,
right = false,
}
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,
righthyphenchar="FE000]
\unexpanded\def\sha#1%
{\begingroup\tt
\sethyphenationfeatures[sha]%
\setuphyphenation[method=traditional]%
#1%
\endgroup}
\showframe
\starttext
some sha
\sha{8b984688efec2}.\par
\sha{8b984688efec2}\hskip0pt.\par
{\sha{8b984688efe3a}\hskip0pt.}\par
\stoptext
Just in case you wonder, I need this to add SHA512 sums of attached
files to PDF documents. (I have mixed the code from different samples
that Hans gave me in replies to diverse questions.)
If I use the \sha command right before a point, I get:
- Only the first and the last character from the especially-hyphenated
text are formatted with the monospaced font. The other ones are
formatted with the Roman font.
- The point outside the command is formatted with the monospaced font,
instead of the Roman one.
- It might be possible that hyphenation could behave wrong in this case.
The simplest way to avoid the issue seems to be to use a zero-width space.
Have I hit an issue with the new hyphenator, or am I simply missing
somehting?
Many thanks for your help,
Pablo
--
http://www.ousia.tk
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