dt-right class is added to numeric column headers

[carlganz]

I am fairly certain this problem was recently introduced. It just recently appeared in a complex application of mine, but I have figured out what it boils down to.

MRE:

datatable(head(iris), 
options = list(columnDefs = list(list(
targets = 0, 
className = "dt-center"))), 
rownames = FALSE)

It's hard to notice on smaller screen, but header for first column has dt-right class so dt-center isn't fully respected. Here is an image:

I haven't paid enough attention to recent changes to know why this is happening. Would greatly appreciate if column title respected className option.

Kind Regards

[shrektan]

Yes, I can reproduce this. And it's introduced by updating Datatable from 1.10.12 to 1.10.16 in this commit 9235453. Will try to file a PR later when I have time.

[yihui]

Should be fixed by @shrektan. Thanks a lot!