spell-check package description

[krlmlr]

Is active only with check(cran = TRUE, check_version = TRUE). Emits a warning if no spell checker is found (checked via utils::aspell(NULL) because the worker function utils:::aspell_find_program is not exported).

R source reference: https://github.com/wch/r-source/blob/deb67e31fd0106dae7ab0d274ab874e56ab1b7b5/src/library/tools/R/QC.R#L6517

[coveralls]

Coverage decreased (-0.1%) to 33.4% when pulling f21079a on krlmlr:aspell into c9470ca on hadley:master.

[coveralls]

Coverage decreased (-0.1%) to 33.4% when pulling f21079a on krlmlr:aspell into c9470ca on hadley:master.

[coveralls]

Coverage decreased (-0.1%) to 33.4% when pulling f21079a on krlmlr:aspell into c9470ca on hadley:master.

[coveralls]

Coverage increased (+0.2%) to 33.7% when pulling fe6e9af on krlmlr:aspell into c9470ca on hadley:master.

[hadley]

Hmmmmmmmm, this doesn't seem like it's going to help a lot of people given that aspell isn't usually installed? (And also maybe it should be used just when cran = TRUE?)

[krlmlr]

I think it's pretty standard on Debian/Ubuntu, at least it's straightforward to install it (via packages aspell and aspell-en, tested on rocker). I guess it can be a pain on Windows or even OS X, that's why I made it optional (with warning).

The spell check is part of the "incoming" check (see R source reference), which is activated only with check_version = TRUE. Only when R-core chooses to split this logic, it will make sense to include it with cran = TRUE.

[hadley]

Ah, got it. Can you please add a note to NEWS and to the check docs?

[krlmlr]

Updated docs and NEWS. Please document().

[coveralls]

Coverage increased (+0.31%) to 33.81% when pulling 5492497 on krlmlr:aspell into c9470ca on hadley:master.

[hadley]

Thanks!