Change Details

**Steps to replicate the issue** (include links if applicable): * Create a page with some text. Make a couple edits. * Copy paste the contents of the first page to a new second page. Save. * Make a couple edits. * Go to Special:MergeHistory and merge the first page into the second page. * View the history of the second page. **What happens?**: * The edit that created the second page has a positive size diff (e.g. +1234 bytes) {F37137576} **What should have happened instead?**: * The edit that created the second page should have a zero size diff (e.g. 0 bytes). This is because no text was added between these two diffs. The wikitext is identical. **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.): * The fix is to have Special:MergeHistory recalculate the sizes of every size diff in both page's history after the merge. * This has likely created a bunch of database corruption. If worth fixing, would probably need a maintenance script that checks the entries in the merge log, then targets those pages for recalculation.

**Steps to replicate the issue** (include links if applicable): * Create a page with some text. Make a couple edits. * Copy paste the contents of the first page to a new second page. Save. * Make a couple edits. * Go to Special:MergeHistory and merge the first page into the second page. * View the history of the second page. **What happens?**: * The edit that created the second page has a positive size diff (e.g. +1234 bytes) {F37137576} **What should have happened instead?**: * The edit that created the second page should have a zero size diff (e.g. 0 bytes). This is because no text was added between these two diffs. The wikitext is identical. **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.): * The fix is to have Special:MergeHistory recalculate the size of the diff after the seam. * This has likely created a bunch of database corruption. If worth fixing, would probably need a maintenance script that checks the entries in the merge log, then targets those pages for recalculation.

**Steps to replicate the issue** (include links if applicable): * Create a page with some text. Make a couple edits. * Copy paste the contents of the first page to a new second page. Save. * Make a couple edits. * Go to Special:MergeHistory and merge the first page into the second page. * View the history of the second page. **What happens?**: * The edit that created the second page has a positive size diff (e.g. +1234 bytes) {F37137576} **What should have happened instead?**: * The edit that created the second page should have a zero size diff (e.g. 0 bytes). This is because no text was added between these two diffs. The wikitext is identical. **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.): * The fix is to have Special:MergeHistory recalculate the sizes of every siz of the diff in both page's history after the mergeseam. * This has likely created a bunch of database corruption. If worth fixing, would probably need a maintenance script that checks the entries in the merge log, then targets those pages for recalculation.