Regular Expression in sed for multiple replacements in one statement

regex sed sublimetext2 regex-group
Jan picture Jan · Jan 3, 2013 · Viewed 28.5k times · Source

I want to sanitise some input and replace several characters with acceptable input, e.g. a Danish 'å' with 'aa'.

This is easily done using several statements, e.g. /æ/ae/, /å/aa/, /ø/oe/, but due to tool limitations, I want to be able to do this in a single regular expression.

I can catch all of the relevant cases (/[(æ)(ø)(å)(Æ)(Ø)(Å)]/) but I replacement does not work as I want it to (but probably completely as intended):

 $ temp="RødgrØd med flæsk"

 $ echo $temp
 RødgrØd med flæsk

 $ echo $temp | sed 's/[(æ)(ø)(å)(Æ)(Ø)(Å)]/(ae)(oe)(aa)(Ae)(Oe)(Aa)/g'
 R(ae)(oe)(aa)(Ae)(Oe)(Aa)dgr(ae)(oe)(aa)(Ae)(Oe)(Aa)d med fl(ae)(oe)(aa)(Ae)(Oe)(Aa)sk

(first echo line is to show that it isn't an encoding issue)

Just as an aside, the tool issue is that I should like to also use the same regex in a Sublime Text 2 snippet.

Anyone able to discern what is wrong with my regex statement?

Thanks in advance.

Answer

Anders Johansson picture Anders Johansson · Jan 3, 2013

Split it up into several sed statements, separated by ;:

sed 's/æ/ae/g;s/ø/oe/g;s/å/aa/g;s/Æ/Ae/g;s/Ø/Oe/g;s/Å/Aa/g'

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