GHC/GHCi should optionally print errors in reversed order

This would be super useful especially when refactoring. The way I usually do refactoring is that I break things with a change, and then reload GHCi, fixing a couple of errors at a time. I almost always start with first error, which means I have to scroll every time I reaload GHCi.

Trac metadata

Trac field	Value
Version	7.11
Type	FeatureRequest
TypeOfFailure	OtherFailure
Priority	lowest
Resolution	Unresolved
Component	GHCi
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture

changed weight to 0

added GHCi Tfeature request Trac import newcomer labels

Not hard; there's one spot where errors are sorted by source location. You'd just need another flag, and user documentation.

assigned to @trac-siddhanathan

Still working on this, siddhanathan?

Yeah, I'm almost done.

Trac metadata

Trac field	Value
Differential revisions	- → D1367

mentioned in commit 499ce291

mentioned in commit d1d8704c

closed

changed milestone to %8.0.1

Trac metadata

Trac field	Value
Resolution	Unresolved → ResolvedFixed
Test case	- → none

added Plow label