User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7b) Gecko/20040421 Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7b) Gecko/20040421 When an entry of windows explorer is copied to clipboard, Edit|Paste and RightClick|Paste are disabled in Composer, but Ctrl+V can still be used to paste the link. Reproducible: Always Steps to Reproduce: 1. Select some file in windows explorer and press Ctrl+C 2. Compose a mail 3. try Edit|Paste or RightClick|Paste 4. Press Ctrl+V Actual Results: All 3 Paste functions disabled in Edit and context menu but Ctrl+V pastes a file link. Expected Results: Enabled status of menu items and corresponding keyboard shortcuts should be consistent. "Edit|Paste without Quotation" would sometimes be useful for links copied from explorer. Ctrl+V or "Edit|Paste" is not useful for such links until Bug 220772 is fixed.

The Paste operation only works with the HTML editor; it is equivalent to dragging and dropping the file into the message body. If the message is in fact sent out as HTML, the file will be included in the message (as a MIME part) and the link will cause it to open; see bug 113435. I'm confirming this because it's true that the menu items are not usefully updated. Ideally, I think the "Paste" should change the text, altho I'm not sure to what -- "Insert link to file in clipboard" is what would be performed.

sorry for the spam. making bugzilla reflect reality as I'm not working on these bugs. filter on FOOBARCHEESE to remove these in bulk.

Tested with an image file. Still repro. Thunderbird 52.1.0 (32-bit) Windows 7 64-bit