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LuaTeX 错误（字体扩展）：字体已使用不同的扩展步骤进行扩展

tag-icon • tag-icon luatex fontspec microtype font-expansion
LuaTeX 错误（字体扩展）：字体已使用不同的扩展步骤进行扩展

当我尝试使用 LuaLaTeX 编译我的文档时突然出现以下错误，我的简单问题是：这是什么意思？

LuaTeX error (font expansion): font has been expanded with different expansion step.

我试过这作为一种可能的解决方案但它并没有改变任何事情。

我说“突然”，是因为昨晚我在另一台机器上编译同一个文档时，它运行正常。我能想到的唯一可能的区别是，另一台机器可能没有最新版本的fontspec或microtype，但发生错误的那台机器有最新版本的（通过 MiKTeX）。

此时，我不想创建一个最小的代码示例，我只想了解该错误的含义，以便我可以尝试跟踪它。但这是我加载相关包的方法：

\usepackage[
  activate={false,nocompatibility},
  final,
 ]{microtype}

\usepackage{fontspec}
\newfontfeature{Microtype}{protrusion=default;expansion=default;}
\setmainfont[Microtype,Ligatures=TeX,Renderer=Basic]{Times New Roman}

我应该补充一点，当我停用 microtype 包时，错误就会消失。

这是日志文件的相关部分：

LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 4.
LaTeX Font Info:    ... okay on input line 4.
LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 4.
LaTeX Font Info:    ... okay on input line 4.
LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 4.
LaTeX Font Info:    ... okay on input line 4.
LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 4.
LaTeX Font Info:    ... okay on input line 4.
LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 4.
LaTeX Font Info:    ... okay on input line 4.
LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 4.
LaTeX Font Info:    ... okay on input line 4.
LaTeX Font Info:    Checking defaults for EU2/lmr/m/n on input line 4.
LaTeX Font Info:    ... okay on input line 4.
LaTeX Font Info:    Checking defaults for T3/cmr/m/n on input line 4.
LaTeX Font Info:    Try loading font information for T3+cmr on input line 4.
 ("C:/Program Files/MiKTeX 2.9/tex/latex/tipa/t3cmr.fd"
File: t3cmr.fd 2001/12/31 TIPA font definitions
)
LaTeX Font Info:    ... okay on input line 4.
luaotfload | load font: auto-selecting default features for script: dflt (was l
atn)
luaotfload | load font: font family='timesnewroman', subfamily='regular' found:
 times.ttf
LaTeX Info: Redefining \microtypecontext on input line 4.
Package microtype Info: Generating PDF output.
Package microtype Info: Character protrusion enabled (level 2).
Package microtype Info: Using default protrusion set `alltext'.
Package microtype Info: Automatic font expansion enabled (level 2),
(microtype)             stretch: 20, shrink: 20, step: 1, non-selected.
Package microtype Info: Using default expansion set `basictext'.
Package microtype Info: No adjustment of tracking.
Package microtype Info: No adjustment of spacing.
Package microtype Info: No adjustment of kerning.
Package microtype Info: Loading generic settings for font family
(microtype)             `TimesNewRoman' (encoding: EU2).
(microtype)             For optimal results, create family-specific settings.
(microtype)             See the microtype manual for details.

! LuaTeX error (font expansion): font has been expanded with different expansio
n step.
<to be read again> 
                   relax 
l.4 \begin{document}




Here is how much of LuaTeX's memory you used:
 31786 strings out of 495011
 125171,1144653 words of node,token memory allocated 1001 words of node memory still in use:
    nodes
   avail lists: 1:2,2:29,3:1,4:9,5:2,6:2,7:1,9:1,11:1
 34213 multiletter control sequences out of 65536+200000
 31 fonts using 6322279 bytes
 65i,1n,95p,886b,696s stack positions out of 5000i,500n,10000p,200000b,50000s
!  ==> Fatal error occurred, no output PDF file produced!

答案1

正如指出的那样这个答案，您不应将microtype的接口与 的接口fontspec（分别为luaotfload）混合使用。要么使用：

\usepackage{fontspec}
\usepackage[activate,final]{microtype}
\setmainfont[Ligatures=TeX,Renderer=Basic]{Times New Roman}

或者：

\usepackage{fontspec}
\newfontfeature{Microtype}{protrusion=default;expansion=default;}
\setmainfont[Microtype,Ligatures=TeX,Renderer=Basic]{Times New Roman}

（在您的例子中，fontspec想要用 5 来扩展字体step，而 microtype 使用的step1，这会导致错误。）

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