Missed/partial translations in setops/fread

[MichaelChirico]

Towards #6532; partner: #6534

• While we could use "condition of class %s" in fread(), I think that's less user-friendly. I suspect many (most) users will not be comfortable with that terminology, it's a relatively advanced topic in R and fread() might be the first function someone ever uses when learning R.
• I was a bit indifferent between the approach taken here for all.equal.data.table() (change to sprintf() and gettext() a full sentence) vs. just gettext("indices"); I chose the former since sentences are typically easier to translate as a whole. (FFR: a @aitap pointed out, this is also better for translators of gendered languages, where individual words with different genders might affect translation of nearby words)

[github-actions]

Generated via commit b1b9bf7

Download link for the artifact containing the test results: ↓ atime-results.zip

Time taken to finish the standard R installation steps: 3 minutes and 17 seconds

Time taken to run atime::atime_pkg on the tests: 9 minutes and 15 seconds

[aitap]

I'm sorry, what does it mean that I'm assigned here? I think you've fixed all the issues, at least I'm not seeing any fragmented sentences after potools::po_extract() and msgmerge. If we want to translsate the message mentioned by @rikivillalba, should I push the commit here?

[MichaelChirico]

Since there's not really any code/logic change here, I think it's OK to get review from non-committer in this case, just hoping from a LGTM from you since you have the translator's eye for whether the changes look good. Thanks!