Column-wise 1:1 append

[Llammissar]

Haha, while writing #68, I realised a couple other ones. This time, I realised there's no easy way to simply append a column to a TSV, as far as I can tell. Maybe something like this:

$ cat sample.tsv
foo	1	2
foo	3	22
foo	5	222
$ tsv-join --append sample.tsv sample.tsv
foo	1	2	foo	1	2
foo	3	22	foo	3	22
foo	5	222	foo	5	222

No filter file, just a line-by-line append. This would be useful for the cases where I want to calculate some sort of derived column and append it to the original file at the end of my pipeline or a periodic addition of new aggregated data in a time-series.

[jondegenhardt]

Unix paste command has this functionality. Does it handle the cases you are looking for?

[Llammissar]

Yeah, I admit I completely forgot about paste. This is probably not a very important one, then.