Its not possible currently. Internally Notepad++ uses Scintilla v3.5.6. However in Scintilla v3.6.0 it added this type of functionality. Quote from Scintilla v3.6.0 release notes:

Multiple selection now works over more key commands. The new multiple-selection handling commands include horizontal movement and selection commands, line up and down movement and selection commands, word and line deletion commands, and line end insertion.

So whenever Scintilla is upgraded internally this will be possible.

Possibly.
Just curious, what’s the typical size of a big JavaScript file?

Perfect - Thank you!

Hi, Jake1191,

From what you said, I think that my solution (C) does exactly what you would like to !

Indeed, any line, which contains the domain attribute, with a value different from the string post_tag, will NOT be removed :-)

Cheers,

guy038

Thanks. I’ll come back and mark solved if it does.

use python to do that. Your data looks like python data structure ( array of dictionary )
http://npppythonscript.sourceforge.net/