I wish this add-on had a key for selecting it once I opened the right click menu. The old extension which no longer works - COLT - had this feature. It avoids an extra mouse navigation to copy the text.

Works on most links. Does not work on what is most important to me: telephone numbers in gmail emails . I think that they are automatically linkified by gmail. They have the form tel:(503)%555-5555 and display as links. When I right click on those links, the "copy text of link" item does not appear in the context menu.

It won't work with Firefox for Android Beta 57