In vim, how do I paste a column of text to the end of irregular length lines?

Question

I would like to paste a column of text at the end of irregular-length lines.

For example, I would like to paste the following:

SRR447882.fastq.gz
SRR         


        

Answer 1

You could try to do the following four steps:

1. block-wise select the first 3 lines (you want to paste later), and press y
2. line-wise select (V) the 3 lines ending with _, press :right
3. then move cursor to the end of the first line($), paste the yanked text
4. gv re-select the lines, press :left

It looks like this: