Yeah, gets the column but only uses it to [test if it exists](https://github.com/geany/geany/blob/0dc1e4c6d3129135b768f20b848c653e84c135ee...) and doesn't use it again. Looks like its a copy of `reflow_paragraph` above.
Also that should go in the menu, its not very discoverable just in the keybindings, but that needs someone with the right version of Glade to edit.