Hello,
Bugs with set += and with set -= for spellsuggest.
1) When :set spellsuggest? showed "best",
the following generates E474 error
:set spellsuggest+=10
:set spellsuggest=best,10 was accepted
and did work (tested with z=).
2) However, then doing set spellsuggest-=10
resulted in spellsuggest having the value
"best," -- the trailing , was not removed.
--Suresh
