RangeError with Mac line endings

[kiith-sa]

Files with old Mac line endings crash libddoc (yes, this is pretty obscure, pretty much noticed this by accident).

Example file

(that's an old version of installation.d from dub)

Error generated: core.exception.RangeError@libddoc/src/ddoc/lexer.d(91): Range violation

[Hackerpilot]

"I shouldn't worry. Nobody uses old Mac line endings..." -Me, several months ago.