我有一个用纯 TeX 编写的文档，我使用 dvips 和 ps2pdf 将其生成 PDF 文件。假设该文档的 A 版本如下所示。
\input epsf
\newbox\fb \newbox\cb
\setbox\fb\hbox{\epsfxsize=0pt \epsfysize=0pt \epsfbox{test.eps}}%
%\setbox\cb\hbox{foo bar baz quux foo bar baz quux foo bar baz quux
%foo bar baz quux foo bar baz quux foo bar baz quux}%
\topinsert \ifvoid\cb \else$$\hbox{\hsize=\the\wd\fb
\vbox{\noindent{\bf Figure}:\enspace \unhbox\cb}}$$\fi
$$\box\fb$$\endinsert
\bye
让文档的 B 版本与 A 版本的区别只在于取消注释以下行
%\setbox\cb\hbox{foo bar baz quux foo bar baz quux foo bar baz quux
%foo bar baz quux foo bar baz quux foo bar baz quux}%
当我生成文档的 B 版本时，出现了意想不到的副作用：图形中的字体发生了变化！为什么？
这是 A 版 PDF 文件的图像。
这是 B 版 PDF 文件的图像。
我正在使用 kerTeX (http://www.kergis.com/en/kertex.html）。
以下是@ShreevatsaR 要求的“test.eps”的内容。
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/bp { gs sRGB gs } def
% begin .ps.prolog
/gs { gsave } bind def
/gr { grestore } bind def
/ep { showpage gr gr } bind def
/m { moveto } bind def
/l { rlineto } bind def
/np { newpath } bind def
/cp { closepath } bind def
/f { fill } bind def
/o { stroke } bind def
/c { newpath 0 360 arc } bind def
/r { 4 2 roll moveto 1 copy 3 -1 roll exch 0 exch rlineto 0 rlineto -1 mul 0 exch rlineto closepath } bind def
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/p6 { gsave bg eofill grestore newpath } bind def
/p7 { gsave bg eofill grestore stroke } bind def
/t { 5 -2 roll moveto gsave rotate
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mul neg 0 rmoveto show grestore } bind def
/ta { 4 -2 roll moveto gsave rotate show } bind def
/tb { 2 -1 roll 0 rmoveto show } bind def
/cl { grestore gsave newpath 3 index 3 index moveto 1 index
4 -1 roll lineto exch 1 index lineto lineto
closepath clip newpath } bind def
/rgb { setrgbcolor } bind def
/s { scalefont setfont } bind def
% end .ps.prolog
/sRGB { [ /CIEBasedABC
<< /DecodeLMN
[ { dup 0.03928 le
{12.92321 div}
{0.055 add 1.055 div 2.4 exp }
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} bind dup dup
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/MatrixLMN [0.412457 0.212673 0.019334
0.357576 0.715152 0.119192
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/WhitePoint [0.9505 1.0 1.0890]
>>
] setcolorspace } bind def
/srgb { setcolor } bind def
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/TeXtextEncoding [
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/Phi /Psi /Omega /ff /fi /fl /ffi /ffl
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/zero /one /two /three /four /five /six /seven
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def
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/SymbolEncoding [
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/zero /one /two /three /four /five /six /seven
/eight /nine /colon /semicolon /less /equal /greater /question
/congruent /Alpha /Beta /Chi /Delta /Epsilon /Phi /Gamma
/Eta /Iota /theta1 /Kappa /Lambda /Mu /Nu /Omicron
/Pi /Theta /Rho /Sigma /Tau /Upsilon /sigma1 /Omega
/Xi /Psi /Zeta /bracketleft /therefore /bracketright /perpendicular /underscore
/radicalex /alpha /beta /chi /delta /epsilon /phi /gamma
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/fontarray exch def
fontarray 0 get dup maxlength dict begin
{ 1 index /FID ne { def } { pop pop } ifelse } forall
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% Add a definition of .notdef
fontarray
{ /CharStrings get dup /.notdef known
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{ pop } ifelse
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{ fontarray
{ /CharStrings get dup code known
{ code get /result exch def /found true def exit }
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%%IncludeResource: font CMR10
%%IncludeResource: font CMSY10
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/Font1 exch definefont pop
%%IncludeResource: font CMBX10
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答案1
请注意，该文件可能带有.eps扩展名，但它不是 EPS 文件。标题是
%!PS-Adobe-3.0
但它应该是
%!PS-Adobe-3.0 EPSF-3.0
EPS 文件是受限制的PostScript 版本保证了一定程度的“封装”，这基本上意味着您描述的问题不会发生，并且文件可以包含在不同的文档中并具有相同的外观，并且不会影响文档的其余部分。
大多数 tex“eps”包含机制实际上并不检查文件是否满足 EPS 文件的所有要求，并且将包含任意 PostScript 内容。通常，只要文件满足或几乎满足 EPS 的要求，它就会起作用，但在这里你不会那么幸运，包含的文件具有外部字体依赖性。
如果您仍然可以访问该 postscript 文件的源，最简单的方法就是将其重新保存为 EPS 格式。