Added Motorola 68K Grammar

[joshumax]

This commit adds Motorola 68K assembly support to linguist.

Checklist:

• I am associating a language with a new file extension.

  • The new extension is used in hundreds of repositories on GitHub.com
    • Search results for each extension:
      • https://github.com/search?utf8=%E2%9C%93&type=Code&ref=searchresults&q=extension%3AX68+NOT+nothack
  • 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?utf8=%E2%9C%93&type=Code&ref=searchresults&q=extension%3AX68+NOT+nothack
  • 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 syntax highlighting grammar: https://github-lightshow.herokuapp.com/?utf8=%E2%9C%93&scope=from-url&grammar_format=auto&grammar_url=https%3A%2F%2Fraw.githubusercontent.com%2Fzerkman%2Flanguage-m68k%2Fmaster%2Fgrammars%2Fm68k.cson&grammar_text=&code_source=from-url&code_url=https%3A%2F%2Fraw.githubusercontent.com%2Fjoshumax%2Flinguist%2Fc1168f82b4f5d6d6bb1a8b1581a17b2717b037af%2Fsamples%2FMotorola%252068K%2520Assembly%2Fbasic.X68&code=
  • 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: https://github-lightshow.herokuapp.com/
  • New: https://github-lightshow.herokuapp.com/

• 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.

[pchaigno]

Thanks for the contribution!

I left a couple comments below we'll need to adress

[joshumax]

@pchaigno Thank you for your feedback! These problems have been fixed.

[lildude]

I note you've not picked a colour for this language. That's not a problem as we'll fall back to the default of #cccccc but I wanted to check if this is intentional.

[pchaigno]

It's part of a group so it won't get a color anyway, no?

[lildude]

Doh!! Of course. I completely missed that. Thanks @pchaigno

[lildude]

@joshumax can you please resolve the merge conflict.

[joshumax]

@lildude @pchaigno The merge conflict has been resolved.

[lildude]

Thanks. The test failure needs to be addressed now:

  1) Failure:
TestGrammars#test_readme_file_is_in_sync [/home/travis/build/github/linguist/test/test_grammars.rb:42]:
Grammar list is out-of-date. Run `script/list-grammars`.
--- expected
+++ actual
@@ -242,11 +242,6 @@
 - **Monkey:** [gingerbeardman/monkey.tmbundle](https://github.com/gingerbeardman/monkey.tmbundle)
 - **MoonScript:** [leafo/moonscript-tmbundle](https://github.com/leafo/moonscript-tmbundle)
 - **Motorola 68K Assembly:** [zerkman/language-m68k](https://github.com/zerkman/language-m68k)
-- **MQL4:** [mqsoft/MQL5-sublime](https://github.com/mqsoft/MQL5-sublime)
-- **MQL5:** [mqsoft/MQL5-sublime](https://github.com/mqsoft/MQL5-sublime)
-- **MTML:** [atom/language-html](https://github.com/atom/language-html)
-- **mupad:** [ccreutzig/sublime-MuPAD](https://github.com/ccreutzig/sublime-MuPAD)
-- **nanorc:** [Alhadis/language-etc](https://github.com/Alhadis/language-etc)
 - **NCL:** [rpavlick/language-ncl](https://github.com/rpavlick/language-ncl)
 - **NSIS:** [github-linguist/NSIS](https://github.com/github-linguist/NSIS)
 - **Nearley:** [Hardmath123/sublime-nearley](https://github.com/Hardmath123/sublime-nearley)

[stale]

This pull request has been automatically marked as stale because it has not had recent activity, and will be closed if no further activity occurs. If this pull request was overlooked, forgotten, or should remain open for any other reason, please reply here to call attention to it and remove the stale status. Thank you for your contributions.

[lildude]

@joshumax nudge

[joshumax]

@lildude Whoops, looks like I missed the few messages above and it went stale. I'll push it up!

[lildude]

This line and the 4 below it are what is causing the test to fail. They need to be removed from this PR.

[lildude]

See my last change about what needs to be fixed so we can merge this.

[Alhadis]

@joshumax Just run script/list-grammars locally to regenerate the grammars list.

Updated branch with the requested changes.

[Alhadis]

CI's green now, @lildude. I fixed the outdated grammar-list myself. 👍 Should be good to merge.