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#63

Highlight syntax in diff views

merged · by keenan 12d ago · merged into main at cfd43dcd by keenan 12d ago

keenan opened this 12d ago

Why

The code browser highlights a blob, but the commit, compare, and change-request Files views render the same source as plain text. Reviewing a diff is where colour helps most.

What changed

  • diffFile now carries a Prism language derived from the new path, or the old path for a deletion.
  • The shared diff template carries that language on the file section and marks every code cell as old or new.
  • app.js queues a diff once per side. Highlighting old and new as one stream would let a multiline comment or string started on one side colour lines from the other.
  • The token palette now covers diff cells as well as blob cells.
  • Added tests for language selection (including deletions and renames) and for the rendered diff markers.

Verification

  • node --check server/web/static/app.js
  • go test ./... -count=1
  • vole workflow check
  • vole workflow run verify (format, vet, build, govulncheck, packaging, links, race tests)

This is separate from #62: that request fixes the Prism worker and HTMX/CSP errors; this one adds highlighting to diffs.

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