Backslash + Special Char = Shifted Highlight

[dejanzelic]

Describe the bug
When, for example, a "\" is added in a document, the remaining text is shifted by amount of "\". This isn't only on "\_" but any combination of backslash + some special chars. For example: "\;" or "\-"

To Reproduce
Steps to reproduce the behavior:

1. Write a document with some level of spelling/grammar errors
2. Before the errors, write "\_"
3. Observe errors after "\_" are not highlighted as expected.

Expected behavior
The Highlights should stay consistent regardless of the text that is used.

Screenshots

Environment & Configuration (please complete the following information):

• OS + Version: Mac 10.15.4
• VS Code Version: 1.44.2
• LanguageTool Linter Version: 0.12.0
• LanguageTool Version: 4.9.1 (https://github.com/silvio/docker-languagetool)
• Service Configuration: external

[davidlday]

Thanks for the bug report! Bumping this to the top of my list and tagging as possible cause of #120

[davidlday]

LanguageTool server accepts JSON in a form data field (application/x-www-form-urlencoded). This URL encoding sees slashes as escaping the next character if it's one of the special characters. I may need to open an issue on LanguageTool. I think if they're going to accept JSON, but need to explore more.

[davidlday]

Seems to be related to remarkjs/remark#306 from 2017. Will continue to see if there's a workaround I can implement.

[davidlday]

After thinking this through and testing out a few approaches, I've decided to address in the annotatedtext-remark library directly. The problem stems from the parser used there, and trying to fix it here corrupts the code.

Ref: prosegrinder/annotatedtext-remark#26

[dejanzelic]

Thanks for the update!!