So today I decided to figure out why TestWebKitWebContext has never worked for me. Turns out it's because the test assumes the presence of a British English dictionary for enchant. Huh.
Created attachment 244532 [details]
I assume it's broken on Arch too, and I looked up the necessary package names there.
Comment on attachment 244532 [details]
Clearing flags on attachment: 244532
Committed r178369: <http://trac.webkit.org/changeset/178369>
All reviewed patches have been landed. Closing bug.