textile reader doesn't seem to do dashes

[sreservoir]

consider, for example, that

text--
text--
text--
text--

run through, say, pandoc -f textile, produces strikeouts

text-
text-
text-
text-

with -t native,

[Para [Str "text",Strikeout [Str "-",LineBreak,Str "text"],Str "-",LineBreak,Str "text",Strikeout [Str "-",LineBreak,Str "text"],Str "-"]]

this seems somewhat wrong. I haven't taken a look, but if dashes are implemented at all, they might get broken by the strikeout handling.