Urs Liska <li...@openlilylib.org> writes: > Am 20.11.2017 um 09:34 schrieb David Kastrup: >> Urs Liska <li...@openlilylib.org> writes: >> >>> Am 19.11.2017 um 23:43 schrieb Br. Samuel Springuel: >>>> On 2017-11-19 5:28 PM, Simon Albrecht wrote: >>>>> Font selection, language support, UTF-8 input… >>>> All of these are supported in LuaTeX/LuaLaTeX. >>>> >>>> For some key differences see this: >>>> https://www.overleaf.com/blog/500-whats-in-a-name-a-guide-to-the-many-flavours-of-tex#keyfeatures >>>> >>>> >>> There's one feature that sets LuaLaTeX apart from XeLaTeX for my use >>> cases, and that's the compatibility of the 'microtype' package. While >>> it works with XeTeX it offers a limited feature set - and that package >>> with LuaTeX provides (at least for me) those last 5% of beautiful >>> typesetting. >>> >>> However, this comes at a cost: both XeTeX and LuaTeX work >>> *substantially* slower than pdfTeX. >> Which works substantially slower than compiling to DVI and then using >> dvips or similar. >> >>> I'm always stunned how fast "ordinary" compilation can be with LaTeX, >>> for example when simply pushing a Markdown document through Pandoc. >> Try compiling the TeX source code to DVI (not! PDF) with plain TeX. >> That was sort of the definition of a large document in the 80s. > > I'll sure do that occasionally > >> Makes you wonder where LaTeX spends all its time. >> > > Do you have an idea where it does?
Sure. It's part of the cost of using TeX as a programming language. All the important and/or costly things when running plain TeX are executed in Pascal and the respective data kept there. But LaTeX does a lot of programming in TeX macros (just take a look at the difference for \"A or even Ä in some input encoding), and PDFTeX has to deal with a lot more font data and structure than just the metrics in the TFM file, and the respective libraries have not been written by Knuth. -- David Kastrup _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
