[TxMt] Stripping certain characters in snippets

[Daniel Käsmayr]

The LaTeX snippets for sections, when they contain a label, look like  
this:

\section{${1:section name}}\label{sec:${2:${1/(\w+)|\W+/(?1:\L$0:)/g}}}

Somehow (I don't get the syntax for this yet) the $2 part strips non- 
word characters from $1. Is it also possible to do transformations  
like replacing umlauts äöü with aou?

Thanks,

Dan
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