I'm looking for a way to show a marker over multiple lines between the gutter (the column, where icons like e.g. breakpoints are shown) and the column where the plus and minus signs for collapsing loops and methods are.
A picture where the marker should be:
The marker will be used to indicate problems with code. I know of the Annotator (http://confluence.jetbrains.com/display/IntelliJIDEA/Annotator), but I'm looking for a less distractive form.
Any suggestions on how to archieve this?