Request/suggestion for the quote function in the new site
This may not apply to cell phones, but on my desktop, I open the source and target threads in separate browser tabs (right click, open link in new tab). In the tab for the source of the quote, click quote, select all (ctrl a), copy (ctrl c), click on the other tab, comment, paste (ctrl v), then delete all of the extra content I do not need.
Functionality I have seen on other sites (I believe github does this), is to highlight a block of text in an existing post, then right click, and pick quote from the menu. That directly pastes the select text into the existing (or new if no comment is active) comment surrounded by appropriate quote tags. It appears that the functionality the OP wants, is to highlight existing post text, and be able to copy that to the clipboard along with the needed quote tags. A 'copy selected text as quote' option. I don't think I have seen that combination before. Useful when quoting across threads. The github style quoting works well for quoting content from the current thread.