‘show_uri’ was not declared in this scope

I encountered an compiling error after updated the source code with Morgan’s change on 12/17/2019.

The error is “rtwindow.cc:924:5: error: ‘show_uri’ was not declared in this scope;”

I had this issue with both Ubuntu 18.04 and Windows 7 (msys). After msys was updated, I’m able to compile RT on Windows. However, the issue on Ubuntu still persists, even after I replaced gcc 7 with gcc 9.

I would appreciate any suggestion/advice.

Thanks a lot!