feat(wiki): revision diff — compare any two wiki page versions #667

New Issue

2026-06-21T06:32:00Z

jmiller commented

2026-06-21 06:32:00 +00:00

Summary

Add side-by-side diff comparison between any two revisions of a wiki page, with a "revert to this version" option. Currently the revision page only shows commit history without visual diffs.

Current State

WikiRevision() in routers/web/repo/wiki.go shows commit history for a page via CommitsByFileAndRange()
templates/repo/wiki/revision.tmpl renders the commit list with author, date, and message
No way to see what actually changed between revisions
No way to revert to an older version

Proposed Changes

New Route

GET /:owner/:repo/wiki/:page?action=_diff&rev1=<sha>&rev2=<sha>

UI Changes to `revision.tmpl`

Add radio buttons / checkboxes next to each revision in the commit list
"Compare selected revisions" button that navigates to the diff view
Each individual revision gets a "View changes" link for quick diff against its parent

Diff Rendering

Reuse the existing diff infrastructure from templates/repo/diff/ — the same code that renders PR and commit diffs
Show the rendered markdown diff (before/after) and optionally the raw source diff
Since wiki content is stored in git, we can use git diff <sha1> <sha2> -- <filename>

Revert

"Revert to this version" button on each revision
Creates a new wiki commit that sets the page content back to the selected revision
Uses existing wiki_service.EditWikiPage() with the old content

Files to Modify

File	Change
`routers/web/repo/wiki.go`	New `WikiDiff()` handler, revert handler
`templates/repo/wiki/revision.tmpl`	Add checkboxes, compare button, diff view
`services/wiki/wiki.go`	Add `RevertWikiPage()` helper

Wikipedia Parity

Wikipedia's diff view is heavily used by editors to review changes, revert vandalism, and understand edit history. This is essential for collaborative wiki editing.

## Summary Add side-by-side diff comparison between any two revisions of a wiki page, with a "revert to this version" option. Currently the revision page only shows commit history without visual diffs. ## Current State - `WikiRevision()` in `routers/web/repo/wiki.go` shows commit history for a page via `CommitsByFileAndRange()` - `templates/repo/wiki/revision.tmpl` renders the commit list with author, date, and message - No way to see what actually changed between revisions - No way to revert to an older version ## Proposed Changes ### New Route ``` GET /:owner/:repo/wiki/:page?action=_diff&rev1=<sha>&rev2=<sha> ``` ### UI Changes to `revision.tmpl` - Add radio buttons / checkboxes next to each revision in the commit list - "Compare selected revisions" button that navigates to the diff view - Each individual revision gets a "View changes" link for quick diff against its parent ### Diff Rendering - Reuse the existing diff infrastructure from `templates/repo/diff/` — the same code that renders PR and commit diffs - Show the rendered markdown diff (before/after) and optionally the raw source diff - Since wiki content is stored in git, we can use `git diff <sha1> <sha2> -- <filename>` ### Revert - "Revert to this version" button on each revision - Creates a new wiki commit that sets the page content back to the selected revision - Uses existing `wiki_service.EditWikiPage()` with the old content ### Files to Modify | File | Change | |------|--------| | `routers/web/repo/wiki.go` | New `WikiDiff()` handler, revert handler | | `templates/repo/wiki/revision.tmpl` | Add checkboxes, compare button, diff view | | `services/wiki/wiki.go` | Add `RevertWikiPage()` helper | ## Wikipedia Parity Wikipedia's diff view is heavily used by editors to review changes, revert vandalism, and understand edit history. This is essential for collaborative wiki editing.

jmiller added the feature: wiki label 2026-06-21 06:32:00 +00:00

jmiller referenced this issue from a commit

2026-06-21 23:23:16 +00:00

feat(wiki): revision diff — view changes for any wiki commit (#667)

jmiller closed this issue

2026-06-21 23:23:24 +00:00

jmiller referenced this issue from a commit

2026-06-23 14:09:50 +00:00

docs: update README and changelog with wiki features documentation

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