Using LuaLaTeX and a an OpenType font loaded with fontspec (like, say, Linux Libertine), can the "font expansion" feature of microtype be considered stable and fully functional? And can I feel safe by just loading microtype with the default settings, or is it necessary to make manual adjustments depending on the font in question?

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    As long as you're using version 2.5 or later of microtype, version 0.62 or later of LuaTeX, and create pdf files directly (i.e., without a detour via a dvi file), the user guide of the microtype package says that the expansion feature is fully functional. See section 5.7 (and Table 3) of the user guide for a discussion of font-specific configuration files. The package comes with various such files. If the font you use is sufficiently unique, you may find it necessary to create your own font-specific config file to obtain optimal results. – Mico Feb 3 '15 at 20:44
  • I have read the corresponding section but found it hard to translate into human language; namely, when using fonts that are not on the list (like exactly Linux Libertine), will it be necessary to make such files, or is Libertine so "standard" that I can use the default settings? – Gaussler Feb 3 '15 at 20:57
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    I'd give the Times and Palatino config files a try. I doubt you'll find much difference (at least as far as font expansion is concerned). – Mico Feb 3 '15 at 21:00
  • Or perhaps tex.stackexchange.com/questions/97193/… – Gaussler Feb 3 '15 at 21:03
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    Sorry, but I don't "do" Windows. As a result, I can't provide advice on where the file(s) should be stored. – Mico Feb 3 '15 at 21:18

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