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fix(theme): make Prism code block language / additionalLanguages case insensitive #9183

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merged 11 commits into from
Aug 10, 2023
Merged

fix(theme): make Prism code block language / additionalLanguages case insensitive #9183

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4a90ad4
add toLowerCase()
heysujal Jul 28, 2023
39088f8
add test code block for good/bad prism language case
heysujal Jul 28, 2023
e95bea7
Merge branch 'facebook:main' into case-agnostic-highlight
heysujal Jul 28, 2023
194f14f
add PR link
heysujal Jul 28, 2023
66aa971
add pHp in additionalLanguages
heysujal Jul 28, 2023
d50265d
add more test code blocks
heysujal Jul 28, 2023
c16a1e4
Merge branch 'facebook:main' into case-agnostic-highlight
heysujal Aug 8, 2023
f86aab4
Add php title to code blocks, easier to debug
slorber Aug 10, 2023
d4ca2b9
Revert changes
slorber Aug 10, 2023
3f07aab
Normalize theme prism languages to lowercase
slorber Aug 10, 2023
5420c57
empty
slorber Aug 10, 2023
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2 changes: 1 addition & 1 deletion packages/docusaurus-theme-classic/src/index.ts
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Expand Up @@ -176,7 +176,7 @@ export default function themeClassic(

configureWebpack() {
const prismLanguages = additionalLanguages
.map((lang) => `prism-${lang}`)
.map((lang) => `prism-${lang.toLowerCase()}`)
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This could be better handled in the config validation, you can use Joi to normalize/lowercase the provided user input values so that everything else in the system see lowercase values (including prism-include-languages.ts, it shouldn't be needed to lowercase there too anymore)

.join('|');

return {
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2 changes: 1 addition & 1 deletion packages/docusaurus-theme-classic/src/theme/prism-include-languages.ts
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Expand Up @@ -27,7 +27,7 @@ export default function prismIncludeLanguages(

additionalLanguages.forEach((lang) => {
// eslint-disable-next-line global-require, import/no-dynamic-require
require(`prismjs/components/prism-${lang}`);
require(`prismjs/components/prism-${lang.toLowerCase()}`);
});

delete (globalThis as Optional<typeof globalThis, 'Prism'>).Prism;
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15 changes: 15 additions & 0 deletions website/_dogfooding/_pages tests/code-block-tests.mdx
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Expand Up @@ -27,6 +27,21 @@ See:
- https://github.com/facebook/docusaurus/pull/3749
- https://github.com/facebook/docusaurus/pull/6177

## Code block with/without the good prism language case in additionalLanguages[] tests

```php
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that would be nice to add 2 other cases like PHP and PhP there to ensure we also support case insensitive language metastring

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@heysujal heysujal Jul 28, 2023 •
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Well, i already tried doing that before making a pr.
But only php code block works and other like you mentioned doesn't highlight code.
I thought our only goal was to allow the user to put a language in additionalLanguages array in any case but he should enter the language in only lower case when specifying the language of code block. Something like this
image

But, do we also want to add highlight support for code blocks like these?
image

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Well, I have added them and I also saw that the VSCode Markdown preview supports highlighting all these blocks. So, maybe we should do it too.

<?php
$x=15;
$y=30;
$z=$x+$y;
echo "Sum: ",$z;
?>
```

See:

- https://github.com/facebook/docusaurus/pull/9183

## `pre`

### `pre > string`
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