When I get an error message from the compiler, it contains the line and column. However, the column isn't displayed on the page, which would be very helpful to find the location of the error in the editor.
It's not nessary to have a ruler or similar at the top of the editor text area. It would be enough if the column where the cursor is would be displayed above or below the editor text area. While you're at it :-) , you could display line and column together, as found in other editors, e. g. "3, 8" for line 3, column 8, or more explicit as "line 3, column 8".
When I get an error message from the compiler, it contains the line and column. However, the column isn't displayed on the page, which would be very helpful to find the location of the error in the editor.
It's not nessary to have a ruler or similar at the top of the editor text area. It would be enough if the column where the cursor is would be displayed above or below the editor text area. While you're at it :-) , you could display line and column together, as found in other editors, e. g. "3, 8" for line 3, column 8, or more explicit as "line 3, column 8".