# (German) Fwd: Brownian Movement

Der Trailer hatte mich neugierig gemacht: Der Film besticht durch die Ruhe, die fast allen Szenen gegeben ist und mitunter fast übertrieben wirken kann. Die Details der Geschichte scheinen mir nur für die zentralen, ausgesprochene Frage

"Ich bin hier, jetzt, mit dir — Warum reicht das nicht?"

wirklich wichtig zu sein. Ein merkwürdiger Film, aber die Zeit hat sich gelohnt.

# I ♥ Free Software

Yes, I do!

PS: Wordpress' scheduled publishing "Scheduled for: Feb 14, 2012 @ 0:01" failed miserably. What the heck!

# Control over LaTeX page margins (or borders)

Until recently, page margins in LaTeX had more control over me than I had over them. I already heard that package geometry could be of use here, but quick hacks seemed more fun than going through the docs of that package. I had a closer look now and geometry turned out to be much more convenient than I expected in the end. The code that I experimented with can be reduced to this snippet:

%% Demo by Sebastian Pipping <sebastian@pipping.org>
%% Released to the public domain
\documentclass[a4paper]{article}
\usepackage[hmargin=2cm,vmargin=1cm]{geometry}  % !!!
\begin{document}
\rule{\textwidth}{\textheight}
\end{document}


So I am abusing \rule here to draw a filled rectangle that spans the whole content area. I am asking for horizontal margins of 2cm width and vertical ones of 1cm height. Strangely, the output I received did not match my expectations. Look how much bigger the left margin is than the right one. It turns out that indentation of the first line of a paragraph is at work here. The insertion of \noindent solved that problem.

# uriparser 0.7.6 released

This release features build system changes and fixes. Please check the change log for details. This release is both source- and binary compatible.

# (German) Fwd: FoeBuD enttarnt RFID-Chips in Kleidung

Dass man RFID-Chips in Kleidung einbauen kann, war mir klar, aber dass es wirklich gemacht wird, hat mich dann doch ziemlich vom Hocker geworfen:

FoeBuD enttarnt RFID-Chips in Kleidung

# Fwd: [28c3] Effective Denial of Service attacks against web application platforms

Very interesting attack/issue, check it out.

# Hypthenation in LaTeX: why it kills + how to survive

#### Intro

I recently got bitten by the hyphenation of LaTeX and learned a few things in return. I noticed that two other LaTeX users in my environment were running into similar hyphenation trouble or were about to start a bigger text document without sufficient knowledge of hyphenation. So I would like to summarize a few essentials here.

#### Why care about hyphenation?

By default, LaTeX does hyphenation for you. If it gets things wrong the reader will attribute that error to you, not to LaTeX. Sometimes bad or wrong hyphenation even affects the layout of the page and makes text go into the margin area. Maybe a reader attributes that to LaTeX; however, it still doesn't look very professional.

#### Why hyphenation needs to be correct from the very start (and for every

word)

Imagine you work on a document 20+ pages long. You pass a snapshot of the document to someone to read, get some corrections back, start integrating corrections. If you modify content on page 10 there is a chance that hyphenations on pages later in the document change: it may happen the the set of hyphenated words before and after do not share a single word. What that means is that as long as you work on the document, places of hyphenation change. That means errors that no reviewer had a chance to see before. Ouch.

#### Common pitfalls with hyphenation

##### Words containing hyphens, e.g "well-understood"

If you use words that contain hyphens, e.g "well-understood", LaTeX breaks these at the very place of the present hyphens only. It may even write the end into the margin area of the page, if it exceeds a certain length. The following example illustrates the issue. Let's look at a document made of the text

Hyphenation is well-understood. Maybe not.

six times. Without manual work you get output as shown in the following excerpt. Focus on the right border.

If you look close, you can see that "well-understood" on the end of the first line goes beyond the text area. To solve the issue command \hyp of package hyphenat comes to the rescue.

\documentclass{article}
\usepackage{hyphenat}
\begin{document}
Hyphenation is well\hyp{}understood. Maybe not.
[..]
\end{document}


This time the output respects the size of the text area. Again, focus on the right border.

##### Mixing languages, e.g. English and German

If you mix two or more languages within the same document you have to tell LaTeX which words belong to which language. (Once you get used to it, it's bearable; there isn't much of a way around it.) Otherwise you end up with things like German hyphenation applied to English words, i.e. wrong hyphenation. In a case where the main text is written in language A it makes sense to mark selected words as language B. To mark English words in an otherwise German document I use a simple self-made command \ENG:

\usepackage{babel}
[..]
\newcommand{\ENG}[1]{\foreignlanguage{english}{#1}}


An example use would be

UnionFS ist ein \ENG{Stackabe file system}.


Mapping that to other combinations is left to the reader :-)

##### Debugging tool \showhyphens

The command \showhyphens can be used to query all the places where LaTeX dares to hyphenate a word (or compound word). The output however does not go into the actual document but to the shell and the log file. If you feed the following document to LaTeX

\documentclass{article}
\usepackage{hyphenat}
\begin{document}
\showhyphens{well-defined}
\showhyphens{well\hyp{}defined}
Dummy
\end{document}


you can spot this output on the shell:

...
[] \OT1/cmr/m/n/10 well-defined
...
[] \OT1/cmr/m/n/10 well-de-fined
...


In case you have a script extracting all used words from a LaTeX document for another view on spelling mistakes you could combine that with the results of \showhyphens to a make a single list with all words and their hyphenation for review.

# Raining inside: rain as an ambient sound

I recently discovered that the sound of rain makes a great ambient sound for working. Unlike with real music I do not have to switch artists or albums every few hours and there are no foreign words injected into my thinking process so it's easier for me to focus. Finding a good recording of rain can be a bit difficult. What I ended up using is these two CC-BY-licensed samples in loop at the same time :

The Freesound website makes that kind of playback possible without even involving sound editors. All you need is two tabs (or even one) kept open in a browser.