How can I comment, copy and append new line using sed?

I have a file with stuff and I want to locate and change this:

            'SOMETHING': 'something.old'

into this:

#           'SOMETHING': 'something.old'
            'SOMETHING': ''

I need to comment original line as is, i.e. retaining tab & single quotes etc. and append new line
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sed -pibak -e 's/^(.*SOMETHING: .something\.old..*)$/\#$1\n\tSOMETHING: something\.new\n/' filename

Depending on how many patterns you have, IMHO, perl might be an option .....


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micktAuthor Commented:
Thanks, I'll give it a try.  Have to use sed or crudini, depending of file type.
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