Check the post's public revision history, reachable from the edit date/time, and compare the sentence against the revision where it first appears. The original author is named on the post, but a present sentence may come from a later editor. If the history is missing, private, mismatched or ambiguous, write an unresolved note instead of crediting anyone.
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Start from the post's two signatures
A Stack Overflow post displays the original author alongside the latest editor, so the two names you see are not interchangeable. The first name identifies who asked or answered; the second identifies who touched the text most recently. A sentence inside the current wording belongs to neither name automatically. This distinction matters because an ordinary quote check only confirms the words exist on the page, not who placed them there. [Stack Overflow: collaborative post editing]
Open the revision history, not the quote
Edits are recorded in a public revision history that carries editor attribution, and that history is reachable through the edit date/time. Use it as your evidence rather than re-reading the live post. If the edit marker or history is absent, present only to logged-in users, or points to a different post than the one you quoted, record that limit and stop; do not try to reach deleted revisions or another person's account. [Stack Overflow: collaborative post editing]
- Confirm the quote appears word for word in the version you are reading.
- Open the revision history from the edit date/time and confirm it belongs to this post.
- Note the revision timestamps so you can say which version you examined.
Sort the sentence into one of three notes
Compare the quoted wording against the earliest revision containing it. If the sentence appears in the original version, attribute it to the original author. If it first appears in a later revision, attribute it to the editor named for that revision. If the wording is close but not identical, or first appears in a revision you cannot view, mark the sentence unresolved rather than choosing the likelier name. Keep these notes per sentence; a paragraph assembled across revisions can have more than one credited author. [Stack Overflow: collaborative post editing]
| observation | limit | next step |
|---|---|---|
| Sentence present in the first revision | Later editors may have changed surrounding text only | Attribute the sentence to the original author; note the revision checked |
| Sentence first appears in a later revision | That revision must be publicly viewable | Attribute to the editor named on that revision |
| History absent, private, or attached to another post | No public evidence of who wrote it | Write an unresolved note and stop |
| Wording differs slightly from every revision | Paraphrase or partial copy may be involved | Quote the exact version and label the discrepancy |
Write the attribution in a form a reader can audit
Phrase the result so the evidence and the conclusion stay separate. For example: "The quoted sentence in revision 4, dated on the public history, is credited to the editor named there; the original author is named on the post." Avoid compressing this into "written by" without a version. A version-anchored sentence lets a reader re-open the same history and disagree with you on evidence rather than memory.
- Name the revision and the date shown, not just a person.
- State which version you quoted so the note stays checkable.
- Keep confirmation that the words exist separate from who introduced them.
A hypothetical example of the distinction
Suppose a hypothetical answer opens with a clear explanation, and a later hypothetical edit inserts a single sharp sentence into the middle. The post shows the original author and the latest editor. Checking the public history, you find the sharp sentence first appears in that edit, while the opening sentence is untouched from the first version. The correct output is two notes: one sentence credited to the original author, the other to the named editor. Guessing from writing style would not be attribution. [Stack Overflow: collaborative post editing]
Keep the note inside its limits
This exercise produces a sentence-level attribution only. It does not measure technical skill, judge whether the advice is correct, or rank contributors. Absence of a history, a private or deleted revision, or a quote that cannot be matched exactly all end the same way: a recorded limit and an unresolved note. The same restraint applies when the quoted wording has been copied elsewhere; a match on another site says nothing about who first wrote it. [Stack Overflow: collaborative post editing]
A couple more questions
Does the name shown on a Stack Overflow post tell me who wrote a specific sentence?
No. The post names the original author and the latest editor, and current wording can include other editors' changes. Only the public revision history shows which revision introduced the sentence.
What should I write if the revision history is not available?
Record that the history could not be checked, name the version you actually quoted, and mark the sentence unresolved. Do not credit the original author or the latest editor on the strength of the visible names alone.
Can I settle authorship by comparing writing style?
Not reliably. Style-based guesses are inferences, not evidence. Attribution should rest on the revision where the exact wording first appears and the editor named there; otherwise leave the note unresolved.
Does a matching quote on another website settle who wrote it first?
No. A copy elsewhere confirms only that the wording spread. It does not identify the first author, so the revision history of the public post remains the evidence to check.
Sources & editorial notes
Official references checked on October 24, 2026. Checklists, comparison tables and example wording are DateClues editorial tools, not official tests or validated risk scores.
General information. No guide or tool can certify a person’s identity, intentions or safety. Read our editorial standards.