Last time I built something on MacOS, this was basically just a feature of the clipboard API that each app could use independently. When copying to the clipboar

Last time I built something on MacOS, this was basically just a feature of the clipboard API that each app could use independently. When copying to the clipboard, you could declare numerous formats for what was copied, and any app receiving clipboard input could state that they only accepted one format. e.g. copy a jpeg file and you can paste it into Slack, and it will automatically add the image to the post. Paste it into the terminal and you'll get the absolute path to the file. Those sound like sensible defaults that are essentially 'context sensitive paste'. You could copy a link from a webpage and store both the HTML version and a raw-text version in the clipboard, probably a version that used an annotated string, too. For the same reason, yeah... this isn't as intuitive when it comes to software like Excel.