Add option g:haskell_indent_let_no_in

[jez]

This addresses some of the grievances in #85. Namely, we give users the
option to change how indentation works with let statements.

Current behavior:

-- g:haskell_indent_let
let x = 0
>>>>y = 0

let x = 0 in
>>>>x

-- g:haskell_indent_in
let x = 0
>in x

-- ??? (conflated with g:haskell_indent_let)
let x = 0
>>>>x

New behavior:

-- g:haskell_indent_no_in
let x = 0
>>>>x

So for example, those who omit the 'in' on the first line and any 'let'
on the second line can opt to have no indentaton:

--- g:haskell_indent_no_in = 0
let x = 0
fooBar x

Thanks for this project! I really enjoy the new syntax highlighting in
particular. Also, I'm open to suggestions; let me know if you can think of
cases I haven't thought of.

[raichoo]

Hey, thanks for the PR.

I'm not sure about the second new behavior since it would impact my workflow.

I'm doing this quite a lot and hence would prefer indentation under let.

let x = 1
    y = 2 -- gets indented automatically
 in x + y -- dito

I haven't checked if your PR breaks that but from your description it looks like that (maybe I'm just misinterpreting).

[jez]

Two things: I add a new check for if the line contains ' = ', and if it does, uses the value of the old g:haskell_indent_let. Otherwise, if the line does not contain ' = ' and the 'in' keyword hasn't been typed, it uses the value of the new g:haskell_indent_let_no_in. And in fact, the default for this variable is 4, so it behaves exactly like it used to unless you change it. I'm pretty sure this works with your use case as I understand it.

…

On Fri, Jul 14, 2017 at 12:49 PM raichoo ***@***.***> wrote: Hey, thanks for the PR. I'm not sure about the second new behavior since it would impact my workflow. I'm doing this quite a lot and hence would prefer indentation under let. let x = 1 y = 2 -- gets indented automatically in x + y -- dito I haven't checked if your PR breaks that but from your description it looks like that (maybe I'm just misinterpreting). — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#98 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFSaVMeOhjm-zPQG_Y8ubXrqKGs3CUreks5sN6ojgaJpZM4OX4Rh> .

[raichoo]

I've merged this into my workstation so I can test drive it for a day. It seems to have passed my test suite so that's a good sign already ^^.

[jez]

Thanks for the merge! Great plugin by the way; way ahead of any other Haskell syntax/indentation plugin 😄

[raichoo]

Thanks for contributing.