Linked mode broken in ControlStructureProposal

[bjansen]

I implemented a new EclipseControlStructureProposal that allows transforming a.b.c to if (exists val = a.b.c, but the linked mode is broken: it draws a rectangle around val and suggests correct names, but once you select a proposal it breaks the code.

Instead of if (exists string = a.b.c) I get stringval = a.b.c). I'm not sure why that happens, it works fine in IntelliJ so it looks like my offsets are correctly computed...