Find and swap part of text in multiple files with Textwrangler

Question

I'm trying to solve this problem with textwrangler but haven't figured the solution yet.

Any help will be much appreciated.

Suppose I have many emails like this one:

Goodbye

Welcome to the jungle and so on...with much more text...

Hello

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How would I go to swap "Goodbye" and "Hello" without changing the entire text in between? Notice that the text between can change from email to email.

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My guess is:

Search for:

(Goodbye)(?s).*?(Hello)

Replace with:

\2 \1

But it doesn't work.

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I've also tried

Search for:

(Goodbye)|(Hello)

Replace with:

\2 \1

It doesn't work either

Answer 1

You can use the following, make sure you check Grep.

Answer 2

You were actually pretty close. One way would be:

Searching for:

(Goodbye)(?s)(.*?)(Hello)

Replacing with:

\3\2\1

You'd encounter potentially unexpected effects, if the text included another Hello, which could be addressed by changing the search expression to:

(Goodbye)(?s)(.*)(Hello)

Please comment, if and as this requires adjustment / further detail.