Add 8th Language

[booniepepper]

Description

Adds the 8th programming language.

• https://8th-dev.com

8th was first introduced in 2013.

Checklist:

• I am adding a new extension to a language.

  • The new extension is used in hundreds of repositories on GitHub.com
    • Search results for each extension:
      • https://github.com/search?type=code&q=NOT+is%3Afork+path%3A*.FOOBAR+KEYWORDS
  • I have included a real-world usage sample for all extensions added in this PR:
    • Sample source(s):
      • [URL to each sample source, if applicable]
    • Sample license(s):
  • I have included a change to the heuristics to distinguish my language from others using the same extension.

• I am adding a new language.

  • The extension of the new language is used in hundreds of repositories on GitHub.com.
    • Search results for each extension:
      • https://github.com/search?type=code&q=NOT+is%3Afork+path%3A*.8th
  • I have included a real-world usage sample for all extensions added in this PR:
    • Sample source(s):
      • https://github.com/ronaaron/8th-contrib
    • Sample license(s):
      • The Unlicense
  • I have included a syntax highlighting grammar: [URL to grammar repo]
  • I have added a color
    • Hex value: #96AF3C
    • Rationale: This is the primary color of the language logo from the 8th website, and has been in use for >10 years now.
  • I have updated the heuristics to distinguish my language from others using the same extension.

• I am fixing a misclassified language

  • I have included a new sample for the misclassified language:
    • Sample source(s):
      • [URL to each sample source, if applicable]
    • Sample license(s):
  • I have included a change to the heuristics to distinguish my language from others using the same extension.

• I am changing the source of a syntax highlighting grammar

  • Old: [URL to grammar repo]
  • New: [URL to grammar repo]

• I am updating a grammar submodule

• I am adding new or changing current functionality

  • I have added or updated the tests for the new or changed functionality.

• I am changing the color associated with a language

  • I have obtained agreement from the wider language community on this color change.
    • [URL to public discussion]
    • [Optional: URL to official branding guidelines for the language]

[booniepepper]

FYI to @ronaaron this would help classify files and syntax highlight for 8th sources on GitHub

[lildude]

Please follow the instructions in the CONTRIBUTING.md file for adding a language. (Tip: you need to add the grammar using the script/add-grammar script).

[booniepepper]

@lildude Sorry that's my mistake, I was working locally then moved to a git workspace. Looks like I skipped step 2 in the process 😨

[ronaaron]

FYI to @ronaaron this would help classify files and syntax highlight for 8th sources on GitHub

OK; I have no idea how to create a grammar script for github for 8th.
I also hadn't the slightest idea there were that many repos with 8th code...

[lildude]

🤦 sorry. I missed this is using the same grammar as Forth. We don’t need a duplicate grammar, we just need the line in the README.md.

[booniepepper]

@lildude No worries I'll try to get it back to what it was before

@ronaaron Sorry this was meant more as an FYI that we may be able to get categorization and syntax highlighting for 8th soon. You don't need to do anything here, I'll handle it.

For the grammar, I'm going to stick with Forth for now. In the future we could add a more complete grammar, since there are some syntactic differences (like first-class JSON support) that could be highlighted better. In practice so far, I've seen that a Forth grammar works fine

[booniepepper]

@Admodius34 Should I remove it? It's unrelated, but it came in from some yaml formatting step in the contributing docs