Re^6: Join lines that match an string

[ambrus]

What really isn't clear in the OP is whether you want to keep the lines you don't join in the output or throw those lines away. This isn't even clear from your detailed description, though in your code you throw them away. I assumed the OP wanted to keep those lines and only change the joined lines.

[linuxer]

My detailed description could not be clear for that detail.

I simply tried to summarize those conditions, which got clear enough to me (as I am not the OP).

From my personal experience with similar exercises I tend to drop/ignore those lines.

I think my example shows that.

But I learned that my guess (to drop those lines, which aren't to be joined) was wrong.