Am 16.12.21 um 21:02 schrieb Virgil Arrington via lyx-users:
On 12/16/2021 9:31 AM, Herbert Voss via lyx-users wrote:
LuaTeX ,and XeTeX too, are more or less frozen code, just like TeX.
Only bugs will be fixed. There are no good reasons _not_ to use
LuaTeX instead
of pdfTeX:
I just performed an interesting experiment comparing the results from
compiling the same source file with XeTeX, PDFLaTeX and LuaTeX. I was
surprised by the results I got. In the past, I had found that, when I
used XeTeX, I got more "overfull hboxes" with lines flowing past the
right margin than I did with PDFLaTeX. I also would get *many* more
hyphenated words with XeTeX than with PDFLaTeX. I assumed I would get
similar results with LuaTeX, but I was pleasantly surprised.
For my experiment, took a 45 page paper I wrote for a former employer.
For the PDFLaTeX compiled version, I used the mathpazo Palatino font
that came with MikTeX and compiled it with PDFLaTeX. For the XeTeX and
LuaTeX versions, I used Windows' Palatino Linotype font. All other
settings were the same, including the use of the Microtype package in
all versions.
Other font, new kernings, new hyphenations.
mathpazo (Type 1) and Palatino (TrueType) are not the same font!
In a single random paragraph, the resulting file compiled with XeTeX
gave me eight hyphenated line endings. The same paragraph in the
document compiled with LuaTeX gave me three hyphenated line endings,
and the same paragraph in the document compiled with PDFLaTeX only
gave me one hyphenated line ending.
XeTeX also gave me many overfull lines, in fact so many as to make the
resulting document all but unusable. PDFLaTeX gave me a few, but I
could work with them. I was surprised to see that LuaTeX appeared to
give me the fewest overfull lines. I saw very few lines that extended
beyond the right margin, and those I did happen to find extended such
a small amount as to be all but unnoticeable.
I was very surprised by how different the results were when using
XeTeX vs. LuaTeX. I had just assumed that the two engines would
produce very similar results, but that was not the case at all. In
fact, having seen LuaTeX's document, I can't imagine why anyone would
choose XeTeX over LuaTeX. I was also surprised to see how well
LuaTeX's results compared with PDFLaTeX's document. While LuaTex still
gave me more hyphenated line endings, it gave me fewer noticeable
overfull lines at the right margin.
Do _not_ load any font and choose an empty preanble,
then Computer Modern is used for pdflatex and Latin Modern
for lualatex/xelatex. And then you will see _no_ difference in
the created pdf.
Herbert
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