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* [MM-70402] Stop Channel Settings flagging untouched channels as edited The Info tab seeds its form state from the raw channel record but diffs the trimmed local value against the untrimmed stored value. Channel purpose and header are persisted verbatim by the server, so any channel whose text has surrounding whitespace (a header ending in a newline, for example) reports unsaved changes as soon as the dialog opens, which then blocks tab switching and closing the modal. Compare both sides trimmed, matching what the form actually saves, and derive the visible SaveChangesPanel and the parent's unsaved-changes flag from one shared calculation so the two can no longer disagree. Also read the channel name straight from props when validating on blur instead of mirroring it into a ref that is only seeded by a passive effect, which could report "Channel names must have at least 1 character." for a populated field. Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-70402] Cover Channel Settings opening on untidy stored channel text Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-70402] Strengthen coverage for Channel Settings opening state Add a Playwright spec that opens Channel Settings on a channel whose stored purpose and header carry surrounding whitespace and asserts the save panel is absent and the modal closes on a single click, plus a companion spec proving a real edit is still detected and saved. Both need purposeInput and saveChangesPanel locators on the info settings page object. On the unit side, validate the rendered channel name rather than a rejected keystroke, cover the DM header-only branch, pin the whitespace-only edit as a no-op, and assert the form settles clean once the patched channel arrives. Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-70402] Cover Reset and untouched-header preservation on untidy channels Reset used to re-seed the raw stored text and immediately recompute as dirty, leaving the panel stuck open, and saving one field used to rewrite every other field to its trimmed form. Pin both. Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-70402] Tighten comments and assertions in the Channel Settings fix Co-authored-by: mattermost-code <matty-code@mattermost.com> * [MM-70402] Detect channel text changes on raw values, trim only on save Compare the raw field values for change detection instead of trimming both operands, so removing stored leading/trailing whitespace is a savable edit. The form still opens cleanly on untidy stored text because each field is seeded from the raw channel record, and the save payload is still trimmed. --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: mattermost-code <matty-code@mattermost.com>
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