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My setting under LyX "Document" command: language encoding--unicode utf-8; output--default

A minimal example:

type "coefficient" and generate PDF, then search it in PDF

result: not showing up

I tried "tariff" and other words containing "ff", still get the same problem.

Update on 9th Nov 2016

I can confirm that the LyX solution offered to the question to which I have duplicated solves my problem. So just paste the following into the preamble:

  \usepackage{cmap}
  \usepackage[T2A]{fontenc}
Wendy
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1 Answers1

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This is because of LaTeX replacing the two letters ff with what is called a ligature in typography, a single symbol representing the two letters. This looks more beautiful, because instead of having two letters, each one with a horizontal line (and thus a tiny space between those lines), you have one single horizontal line somehow connecting the two letters. This also happens for fi and some other combinations.

You might want to try the cmap package.

I just tried the following document:

\documentclass{article}

%\usepackage[T1]{fontenc}
%\usepackage[utf8]{inputenc}

\begin{document}

tariff

\end{document}

And could not reproduce the error; with or without the two packages included. This was with Apple's Preview.app. Maybe you have to update your PDF viewer?

Anyway, providing a minimal working example would be good for further investigations.

Philipp Imhof
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  • I installed cmap, reconfigured LyX under "Tools", but still not searchable...I use the latest Adobe DC reader. – Wendy Nov 06 '16 at 13:33
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    Then please set up an MWE (see my comment above). Have you tried my example document? Have you tried other PDF readers? What operating system do you use? – Philipp Imhof Nov 06 '16 at 14:40
  • I tried your example, and Adobe Acrobat XI pro too, still not searchable. I use Windows 10. – Wendy Nov 08 '16 at 14:00
  • Some experts have pointed to a previous question to which I have duplicated. It also had a LyX solution which worked for me. Thx a lot anyway! – Wendy Nov 09 '16 at 08:12