There is a lot of documentation about vim's quickfix but I would like to know:
How I can I use a text file (or copy+paste from a terminal), and put this into a quick-fix list in vim?
All the docs I found so far assume that you run make or vimgrep, but in this case I just want to use a text file created elsewhere.
You're looking for :cfile / :cgetfile:
:cf[ile][!] [errorfile] Read the error file and jump to the first error.
The file you're reading naturally must be in a format that can be parsed by the 'errorformat' option.