Clarification needed for TextDocumentContentChangeEvent

[natgabb]

https://github.com/Microsoft/language-server-protocol/blob/master/protocol.md#didchangetextdocument-notification

The definition of TextDocumentContentChangeEvent is a bit unclear. Is the range inclusive at the start and end? Only at the start? What is rangeLength used for?

[gorkem]

similar to #9 ?

[natgabb]

That answers why rangeLength is in the request, but not whether the Range is inclusive or exclusive on the endCharacter.
In the groovy-language-server we ended up implementing didChange by assuming endCharacter is exclusive because it allows for insertion, example: Range= (0,0) to (0,0[ while also allowing for single character replacement example: Range= (0,1) to (0,2[.

[dbaeumer]

It is exclusive. Conceptually a range are two position where a positions is between two characters (like a cursor). I clarified that in the documentation.