Fix range comparison

[jindong-zhannng]

The start of ranges in LSP is zero-based.

I don't know is this function still in use, just fix it while reading source codes.

[msujew]

I'm not sure what this PR is supposed to fix (except for the typo in line 88 range -> to). Is there an actual issue associated with this? If not, I think it still makes sense to at least include the typo fix. Could you please at a few automated tests that assert that the function is supposed to do what it does? I don't think there currently are any tests for that function in particular.

Note that the code is designed to use < and >, since the <= and >= operators are used below (lines 93-94) to check whether a range is inside of another.

Also, in order to accept your contribution, please sign the Eclipse Contributor Agreement (ECA) with the email address that was used to create the commit.

[jindong-zhannng]

I added test cases to cover all my changes. For the range comparison, here is a reference implementation from vscode: https://github.com/microsoft/vscode/blob/addd445017c9c5531b89851dc8dc9bec4f1dd0f8/src/vs/editor/common/core/range.ts#L420C16-L420C31

[msujew]

Thanks for the tests!

Have you already signed the ECA with the email that was used to create the commit? The automated checking process still says it's not signed, see here.

[msujew]

LGTM, thanks 👍