Attempting to use sublime on the command line I was told by sublime and the entire internet it seems that the correct format is file:line:col. But this just attempted to open up the file with a colon and the line number as part of the filename. Perhaps this is an oversight but it turned out that delimiting by spaces was the correct format. sublime-text.subl --help says:
Filenames may be given a :line or :line:column suffix to open at a specific
location.
But this doesn’t work.
Sublime 3207 on Ubuntu 18.04