Use post.date when no post.updated entry exists

[sam9032]

Summary

Without this fix, there is no date if you set post_listing_date = "updated" and the post has no updated date.

Related issue

#326

#330

Changes

If the post doesn't has an updated entry, the creation date is used:

Accessibility

Screenshots

Type of change

• Bug fix (fixes an issue without altering functionality)
• New feature (adds non-breaking functionality)
• Breaking change (alters existing functionality)
• UI/UX improvement (enhances user interface without altering functionality)
• Refactor (improves code quality without altering functionality)
• Documentation update
• Other (please describe below)

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Checklist

• I have verified the accessibility of my changes
• I have tested all possible scenarios for this change
• I have updated theme.toml with a sane default for the feature
• I have made corresponding changes to the documentation:
  • Updated config.toml comments
  • Updated theme.toml comments
  • Updated "Mastering tabi" post in English
  • (Optional) Updated "Mastering tabi" post in Spanish
  • (Optional) Updated "Mastering tabi" post in Catalan

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[welpo]

Great idea! I think it should be in the docs. Could you please update the Mastering tabi (English) post and the comments in config.toml and theme.toml?

[welpo]

Thank you!