Am 26.08.20 um 18:45 schrieb Keno Wehr:
LuaTeX provides a “hyphenate” callback allowing to replace TeX's
hyphenation routine (LuaTeX manual, p. 175).
This callback is used by the luatexko and luavlna packages, which
however do not use it for real hyphenation.
I would like to get an idea how this callback can be used for hyphenation.
Is there any known Lua implementation of TeX's or any other hyphenation
algorithm?
What is the preferred way to access the hyphenation patterns within Lua?
Have a look at <URL:https://github.com/sh2d/padrinoma>. The repository
contains some Lua/texlua and LuaLaTeX examples in the `example/`
directory. The `patternize.lua` commmand-line tool might be something
to look at first (run with argument `--help`). See the several
`MANIFEST` files for the other examples. Installation instructions can
be found in file `examples/README`.
Warning: For the sake of flexibility – I had other applications in mind
than hyphenation –, an OOP approach has been taken to pattern handling.
Therefore, the code might look more complex than needed.
Best regards,
Stephan Hennig
$ texlua patternize.lua -p en-us -v <<< hyphenation
pattern file:
/usr/share/texlive/texmf-dist/tex/generic/hyph-utf8/patterns/txt/hyph-en-us.pat.txt
(4938 patterns read)
spot mins, special characters: 2 2 '-=.'
. h y p h e n a t i o n .
h y3p h
h e2n
1n a
h e n a4
n2a t
h e n5a t
2i o
1t i o
o2n
.0h0y3p0h0e2n5a4t2i0o0n0.
hy-phen-ation
$ texlua patternize.lua -p en-gb -v <<< hyphenation
pattern file:
/usr/share/texlive/texmf-dist/tex/generic/hyph-utf8/patterns/txt/hyph-en-gb.pat.txt
(8527 patterns read)
spot mins, special characters: 2 2 '-=.'
. h y p h e n a t i o n .
h2y
2y p
y2p h
h y3p h
h e2
p h e4
y p h4e
n1a
n a t i4
2i o2
1t i o
.0h0y3p0h4e4n1a1t2i4o0n0.
hy-phen-a-tion
