This seems (kind-of, I know...) as a duplicate of my improvement suggestion I made a few years ago:
https://smartgit.userecho.com/communities/1/topics/1213-edit-external-tool-dialog-add-a-line-argument-type

Update: Sublime Text supports column numbers as well:

$ subl -h

> Filenames may be given a :line or :line:column suffix to open at a specific location.

It would make sense to write expression such as ${filePath}:${lineNo}:${colNo}, or ${filePath}:${line}:${col}, if you wish.

PyCharm's charm launcher is another editor with support for cursor addressing. It supports two syntaxes, --line line and file[:line].