Incorrect position information

[NeilMitchell2]

Given the module:

foo = x where x = 1
 
 
 
y = 2

The SrcInfo? on the PatBind? for foo extends to the very beginning of the y, so srcSpanEndLine = 5, rather than 1.

Niklas replied:

I can see how that can be problematic, but formally the scope of the where actually extends as far as to the y, where the implicit } is located. That said, I can't think of a situation where that behavior is actually what you want. So I guess misfeature, rather than bug. I'll have a look at it, but I fear it could be quite hard to get right.