SED - unable to execute some commands on UTF-8 encoded chars

I got a file that looks like this:

<text top="123" left="45" width="50" height="17" font="8">Måndag</text>

As noted in the topic, this file is encoded in utf-8. When using this command:

cat file | sed 's_.*top="\([0-9][0-9]*\)" left="\([0-9][0-9]*\)".*>\(.*\)<.*_\1 \2 \3_'

it never completes the execution and prints nothing.

However executing a line like this one:

cat file | sed 's/å/FOO/'

gives me a correct output:

<text top="123" left="45" width="50" height="17" font="8开发者_如何学JAVA">MFOOndag</text>

Is this a bug in sed or is there something wrong with my regex or the way that I'm using it? What I want is a neat way to extract the top, left and content data without involving too many commands.

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The easiest way to do this reliably is just to use perl in place of sed:

bash$ perl -CSAD -pe 's/foo/bar/g'

That will allow Unicode in your arguments, your std streams, and all files you process.

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Not all seds are built to handle UTF-8. I would look at the source to see if any relevant patches have been applied. FTR, Red Hat-derived seds do handle UTF-8 properly.

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Try this suggestion. Looks like it could work for you.