General ⇒ add color to verbatim environments

[stephentucker]

Hi list,

I was wondering if anyone knew of a way to add colors to two successive verbatim text blocks without adding an extra blank line in between. For instance, the spacing I desire is the output of:

Code: Select all

\begin{verbatim}
line 1
line 2
\end{verbatim} 
\begin{verbatim}
line 3
line 4
\end{verbatim}

But I want to add color to these two verbatim environments. The two ways I know how are
1. (using \usepackage[usenames]{color})

Code: Select all

{\color{red}\begin{verbatim}
line 1
line 2
\end{verbatim} }
\color{blue}{\begin{verbatim}
line 3
line 4
\end{verbatim}}

and
2. (here, using \usepackage{fancyvrb} also)

Code: Select all

\begin{Verbatim}[formatcom=\color{red}]
line 1
line 2
\end{Verbatim} 
\begin{Verbatim}[formatcom=\color{blue}]
line 3
line 4
\end{Verbatim}

But in both of these cases, an extra blank line is added in between the two colored sections of text in the output. I wonder if anyone knows how to work around it, to get the same spacing as with the two successive, uncolored verbatim environments?

Thanks very much!

Stephen

[Juanjo]

Try this, which uses the fancyvrb package:

Code: Select all

\renewcommand{\FancyVerbFormatLine}[1]{%
  \ifnum\value{FancyVerbLine}<5\color{red}#1%
  \else\color{blue}#1\fi}
\begin{Verbatim}
line 1
line 2
line 3
line 4
line 5
line 6
line 7
\end{Verbatim}

In the second line of code, replace 5 by the number of the first line of the blue block.

[stephentucker]

Yes!!!
Thank you - I couldn't even figure out if I was supposed to poke around in the 'color' or 'fancyvrb' package.
But this is excellent - I can script some text processing to combine the two successive verbatim environments and invoke the renewcommand for each section with the appropriate number of lines.
Thank you!!!

[samuel roberson]

A nice bit of code. Thanks!

[bleagos]

Hey,
I was just wondering how you would choose specific lines to be red...like just the 5th and 7th line, is there anyway to do this similar to the previous code, something like this:

Code: Select all

\renewcommand{\FancyVerbFormatLine}[1]{%
  \ifnum\value{FancyVerbLine}=5 or 7\color{red}#1%
  \else\color{black}#1\fi}

[Juanjo]

Assuming that black is the default color, just type

Code: Select all

\renewcommand{\FancyVerbFormatLine}[1]{%
  \ifnum\value{FancyVerbLine}=5\color{red}#1%
  \else%
  \ifnum\value{FancyVerbLine}=7\color{red}#1%
  \else #1\fi\fi}

If black is not the default color, replace the last line by

Code: Select all

   \else\color{black}#1\fi\fi}

[bleagos]

That is wicked, thanks

[mirlaine]

Hi,

I am using a command like

Code: Select all

\renewcommand{\FancyVerbFormatLine}[1]{%
  \ifnum\value{FancyVerbLine}=5\color{red}#1%
  \else%
  \ifnum\value{FancyVerbLine}=7\color{red}#1%
  \else #1\fi\fi}

however, only line 7 is red colored. I am using beamer in order to produce a presentation. Any explanation is welcome.


Thanks in advance.