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In Lyx I would like to convert greyed out text into comments. The Lyx environment is lyxgreyedout. I have considered switching to another IDE already and it is not an acceptable solution.

The website below does something similar I think but I don't quite follow it: http://www.mail-archive.com/lyx-users@lists.lyx.org/msg79368.html

If there is some alternate way of allowing comments to show up in a draft but not the final product in Lyx, please let me know.

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Could you make clear in your question what you want to achieve. It isn't obvious why the "lyx" tag is relevant here, but given your comment on Martin's answer, I expect it might be. –  Seamus Mar 30 '11 at 22:26
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2 Answers

up vote 1 down vote accepted

You might also consider using PDF annotations with the pdfcomment package.

There's a Lyx module, which at least partly supports pdfcomment. You can use the final option to switch off the comments.

Here's a blog post, how to make it work.

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+1 This seems very promising I will look at it in detail on the weekend. –  denilw Mar 31 '11 at 16:01
    
The link you provided blog.ibd.com/howto/… is excellent. –  denilw Mar 31 '11 at 16:07
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Use the comment package and then \excludecomment{gray} to redefine the gray environment to be ignored.

Example:

\documentclass{article}
\usepackage{xcolor}
\newenvironment{gray}{\color{gray}}{}
\usepackage{comment}
\excludecomment{gray}

\begin{document}

...
\begin{gray}
    Text
\end{gray}
...

\end{document}

There is also \includecomment{<env>} to define an environment which is simply included. See my answer to Whether it's possible to keep translation together with original text? for an example.

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+1 this seems like a great solution. Ultimately I want to use this for the to redefine the lyx command \lyxgreyedout, however \excludecomment{lyxgreyedout} doesn't work. I have rolledback the title change in the hopes that a solution to the more general case of redefining an environment will work. –  denilw Mar 30 '11 at 21:52
    
@denilw: Please mention the Lyx application in your question and add the {lyx} tag as well. Your question doesn't has much to do with redefining an environment in general (which is done using \renewenvironment BTW), which was the reason I changed the title. –  Martin Scharrer Mar 30 '11 at 22:05
1  
I added the lyx tag, though I have had bad success getting help whenever I mention lyx. No one takes the question seriously. Most of the time the first answer is don't use lyx. –  denilw Mar 30 '11 at 22:18
    
@denilw: I see. What is the problem of using \excludecomment{lyxgreyedout}? The expression doesn't work doesn't tell me much. –  Martin Scharrer Mar 30 '11 at 22:20
1  
@denilw: I meant you can't use comment environments inside other environments (or verbatim environments and similar). They do not work like normal but looking for a text match of e.g. \end{comment} which is never seen because it is inside \end{lyxgreyedout} which isn't expanded/processed while looking for it. –  Martin Scharrer Mar 30 '11 at 22:53
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