THE GITHTML FIELD GUIDE
Compare documentation between two releases with Git diff
Compare two known revisions with git diff, restricted to the documentation paths that matter. Start with a filename summary, then inspect substantive changes. A textual diff helps identify altered instructions, but you still need to read the final pages to evaluate navigation, missing assets, and whether a change affects the reader.
Define the comparison before opening the patch
Write the old release, new release, and user task under review. A migration review should focus on prerequisites, commands, compatibility, and recovery notes; a visual redesign review has different questions. This framing keeps generated markup changes from overwhelming the actual decision.
Use existing tags or commit identifiers. If tags are locally unavailable, do not silently substitute the current branch. Ask for the intended revision or confirm it through the repository’s recorded release information.
Start with the changed paths
Run git diff --name-status v2.3.0 v2.4.0 -- docs to see which paths changed between the example releases. Then run git diff v2.3.0 v2.4.0 -- docs/install.html for a specific guide. These commands inspect differences without altering the checkout.
Treat additions, removals, and renames as navigation questions as well as content questions. A procedure can become difficult to find even when every sentence survives unchanged in a different folder.
git diff --name-status v2.3.0 v2.4.0 -- docs
git diff v2.3.0 v2.4.0 -- docs/install.htmlSeparate substance from generated noise
Generated pages may contain reordered attributes, asset identifiers, or theme changes that obscure a one-line instruction update. Compare authoring sources when available, then inspect the corresponding generated output to confirm that the intended change reached readers.
Make a short change ledger with three columns in your notes: previous behavior, new behavior, and reader action. An updated example deserves a clear explanation if users must change configuration, credentials, file locations, or assumptions.
Read the new document as a whole
After reviewing the patch, open the new guide and follow the task from beginning to end. Check whether the prerequisites match the revised commands and whether old screenshots or cross-references contradict the new text.
Finish with explicit findings: no reader action, documentation-only clarification, required migration step, or unresolved inconsistency. Record the compared revisions. A diff review becomes much more valuable when its output is a concise decision rather than a pile of changed lines.
Sources and further reading
AI-assisted writing with source-linked guidance and illustrative examples. Read our editorial approach or report a correction.