[Tex/LaTex] pdf/a: Width information for rendered glyphs is inconsistent

fontspdf-a

Have there been any advances to create a valid pdf/a-1b from LaTeX including math fonts? I get the following error from preflight in Adobe Acrobat Pro: Width information for rendered glyphs is inconsistent for the document (TeXLive 2011 and PDFLaTeX):

\documentclass{article}

\usepackage{MnSymbol}
%\usepackage{mdsymbol}
\usepackage[a-1b]{pdfx}

\begin{document}

\begin{equation}
  \sum
\end{equation}

\end{document}

For this to run, a sRGB profile is needed which can be downloaded here.
Rename it to sRGBIEC1966-2.1.icm.

Next to fixable errors (e.g. no metadata supplied), I get the error for either MnSymbol or mdsymbol. Is there something to be done in the mf source code? Any other advice? Unfortunately, Acrobat cannot fix this issue.

Best Answer

I cannot provide an LaTeX-based answer, but I tried the new Acrobat Reader XI in order to get a fully valid pdf/a-1b document from your MWE. Et voilà, it worked well, the pdfwidth information for rendered glyphs was also fixed. One drawback though, in comparison with Acrobat Reader 9 the generated files seem to get larger.

Related Solutions

[Tex/LaTex] Use stylistic set variations only for certain glyphs

For the specific example you have in mind, the simplest solution is simply to redefine \& as the alternate version. This is especially true of \&, since it's already a macro. For the occasional other character, this route might also be best, i.e. simply define a macro to introduce the alternate.

There is a more complicated version using \XeTeXintercharclass that might be useful for choosing alternates for more characters. The basic technique is explained in the XeTeX documentation (texdoc xetex). Note that this solution will not work for LuaLaTeX, which does not support these interchar classes.

I've worked both methods in the following sample document:

% !TEX TS-program = XeLaTeX

\documentclass{article}
\usepackage{fontspec}
\setmainfont[]{Linux Libertine O}
\begin{document}

This is an \& not alternate 

% First the simple version
\let\oldand\&
\renewcommand{\&}{\begingroup\addfontfeature{Alternate=0}\oldand\endgroup}

This is the alternate \& after redefinition.

\renewcommand\&{\oldand}

This is back to the old \&

% Now the more complicated version:
\XeTeXinterchartokenstate=1 % enable character classes
\newXeTeXintercharclass\myalt % create a new class
\XeTeXcharclass `\& \myalt % add & to the class
% between any character of class 0 and \myalt add the alternate feature
\XeTeXinterchartoks 0 \myalt = {\begingroup\addfontfeature{Alternate=0}}
% between \myalt and any character end the group
\XeTeXinterchartoks  \myalt 0 = {\endgroup}
% between a word boundary and \myalt add the alternate feature
\XeTeXinterchartoks 255 \myalt = {\begingroup\addfontfeature{Alternate=0}}
% between \myalt and the word boundary end the group
\XeTeXinterchartoks  \myalt 255 = {\endgroup}
This is an \&  alternate. And one in the middle of a word: A\&B.
\end{document}

output of code

[Tex/LaTex] TeXLive/PDFTeX fonts loading problem

The font larm1000 is the base font for the cyrillic encoding T2A that you are choosing to be the default for your document, as it is the last appearing in

\usepackage[T1,T2A]{fontenc}

This should be corrected, if the default language is English, as specified by

\usepackage[hebrew,english]{babel}

In order to avoid the problem, install with tlmgr all the packages in collection-langcyrillic, in particular the lh package.

Best Answer

Related Solutions

[Tex/LaTex] Use stylistic set variations only for certain glyphs

[Tex/LaTex] TeXLive/PDFTeX fonts loading problem

Related Question