id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
4985	Improve locations in ghci errors	igloo		"
This shows GHC complaining of an error in line 9 of a 7 line file. The error is really on line 4. My guess is it's adding the line within the `:{` ... `:}` to the line of the `:}`, in which case the best fix is probably to remember the position of the `:{` and set the line number to that when evaluating the expression.

{{{
Prelude> :! cat script_me
:{
let y1 = 1
    y2 = 2
    Y3 = 3
    y4 = 4
    y5 = 5
:}
Prelude> :! wc -l script_me
7 script_me
Prelude> :script script_me

script_me:9:5: Not in scope: data constructor `Y3'
}}}

Additionally, errors in `.ghci` files currently have `<interactive>` as their location. Probably `sourceConfigFile` in `ghc/InteractiveUI.hs` should set the filename.
"	bug	new	low	7.6.2	Compiler	7.0.1				Unknown/Multiple	Unknown/Multiple	None/Unknown