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Add .mill extension to Scala language highlighting #7028

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Add .mill extension to Scala language highlighting #7028

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@lihaoyi lihaoyi commented Sep 3, 2024 •
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The Mill Scala build tool recently moved its file format extension from .sc to .mill (com-lihaoyi/mill#3426) to better differentiate it from other Scala scripts (Ammonite, Scala-CLI, IntelliJ/VSCode worksheets). This updates Linguist to understand that .mill files should be highlighted as Scala

Description

Checklist:

  • I am adding a new extension to a language.

  • I am adding a new language.

    • The extension of the new language is used in hundreds of repositories on GitHub.com.
    • 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: [URL to grammar repo]
    • I have added a color
      • Hex value: #RRGGBB
      • Rationale:
    • 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]

@lihaoyi lihaoyi requested a review from a team as a code owner September 3, 2024 15:15
lildude
lildude requested changes Sep 3, 2024
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Please follow the details for adding an extension in the CONTRIBUTING.md file.

Please also use and fill in the PR template; it's there for a reason.

@lihaoyi
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lihaoyi commented Sep 3, 2024

Got it! Will follow the instructions and report back when we have >200 results in the wild

@lihaoyi lihaoyi mentioned this pull request Sep 4, 2024
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lihaoyi added a commit to com-lihaoyi/mill that referenced this pull request Sep 4, 2024
@lihaoyi
Rebootstrap on latest master (#3420)
dd57a10 
Need to make sure everything works and dogfood it a bit before
0.12.0-RC1

This converts Mill over to the `build.mill` file extension. We also
break up `build.mill` into per-folder `package.mill` files:
`scalalib/package.mill`, `main/package.mill`, etc.

IntelliJ users would need go to `Settings` / `Editor` / `File Types` /
`Scala` and add `*.mill`. Github syntax highlighting doesn't work, which
is expected for now until
github-linguist/linguist#7028 lands (which will
need to wait for some usage in the wild according to Github's syntax
highlighting policy)
@lihaoyi lihaoyi mentioned this pull request Sep 8, 2024
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@lildude lildude added the Stale label Mar 5, 2025
quat1024 added a commit to CrackedPolishedBlackstoneBricksMC/toybox that referenced this pull request Mar 15, 2025
@quat1024
add gitattributes to work around github-linguist/linguist#7028
22f5acb
@lihaoyi lihaoyi requested a review from lildude May 5, 2025 13:40
@lihaoyi
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lihaoyi commented May 5, 2025

Hi! It's been a while since we adopted the new extension, and the The new extension is used in hundreds of repositories on GitHub.com requirements seems to be met now: https://github.com/search?type=code&q=NOT+is%3Afork+path%3Abuild.mill+%22import+mill%22 lists 450 repos using this syntax, and I expect the number to continue to grow over time as people upgrade to the latest version and use the new extension

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lihaoyi commented May 6, 2025

I have also completed the checklist, added the search URL in the PR description, and added a sample file together with it's license

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