Running macOS 10.13.2; RStudio Version 1.1.383.
In Apple-conforming macOS applications the key combination Command-Control-Space bar opens what Apple calls the "Emoji & Symbols" keyboard. In an application with an editor pressing that keystroke combination opens the macOS keyboard containing multiple character sets, including math symbols and punctuation. Double clicking on a symbol in the macOS keyboard causes that character to be inserted at the cursor. I cannot make this work in RStudio, whereas, I can from any other editor application, such as, for example, vim, running concurrently on the machine. Is this feature present in RStudio, and if so, how do I access it? If not, why not? Why is this important? All sorts of raw data to be reduced with R contains special characters and symbols that may need to be searched, matched and parsed in R, such as the string trimming and parsing functions. Simple example: the degree, prime and double prime symbols present in latitude and longitude data.