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I try to use latexdiff to point out changes I have made in a document to the other people who need to read it and give me their advice... However, I've been getting this error:

Runaway argument?
{En rajoutant aux interactions la seconde main, qui dans notre cas es\ETC.
! Paragraph ended before \UL@on was complete.
<to be read again> 
               \par 
l.8 }
   %DIFDELCMD <
?

regarding this section of code produced by latexdiff :

 \DIFdelbegin \DIFdel{En rajoutant aux interactions la seconde main, qui dans notre cas est la main gauche, l'interface pourrait devenir plus intuitive et plus facile à utiliser.

}%DIFDELCMD < 

%DIFDELCMD < %%%
\DIFdelend

Where \DIFdelbegin, \DIFdel, \DIFdelend are defined as (in my main .tex, added automagically by latexdiff) :

\providecommand{\DIFdel}[1]{{\protect\color{red}\sout{#1}}} %DIF PREAMBLE
\providecommand{\DIFdelbegin}{} %DIF PREAMBLE
\providecommand{\DIFdelend}{} %DIF PREAMBLE

What's wrong & what can I do now?

EDIT : If I replace the \sout{#1} by just #1 (i.e., remove the strike-through formatting), it works, but that strike-through kinda was the best feature of it, making it easy to spot what was removed. Is there another formatting command that would not break with a new paragraph?

If there was a strikethrough environment I could probably use it (by placing a \begin{strikethrough} in \DIFdelbegin and an \end{strikethrough} in \DIFdelend), but I don't think there is one.

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1  
If you remove the blank line in the argument to \DIFdel, does the error persist? –  Willie Wong Nov 7 '10 at 19:32
    
No, but that's part of the problem. Latex diff is inserting this line automatically, I can't be editing all my files manually after latexdiff has parsed them, I'd rather look for another solution than be forced to do it manually. –  levesque Nov 7 '10 at 19:37

3 Answers 3

I had exactly the same problem. Latexdiff seems to introduce Windows line endings, which seemed to caused the problem.

I now run dos2unix on the resulting latexdiff tex files and the problem has disappeared.

I'm running latexdiff 0.5 (Algorithm::Diff 1.15 so)

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Awesome, I'll make sure to try that. –  levesque Jan 20 '11 at 16:13

I got the same problem when I was doing difflatex in Mac. The exact same error ! What I did was moved up the "}" sign that was causing the problem to the the end of the paragraph and it worked. Don't ask me why, but it worked for me !!!

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Welcome to TeX.sx! –  Kurt Nov 30 '12 at 1:33

Instead of \sout, try the \st command from the soul package.

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In my case, neither \sout nor \st work, even if I use the packages. –  Frank Apr 6 '11 at 1:02

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