NondecreasingIndentation (& de-tabbing several .hs files)

[Simon Marlow]

On 15/05/2014 11:12, Herbert Valerio Riedel wrote:
> Hello GHC devs,
>
> While I refactored the ghc code base to declare LANGUAGE pragmas
> locally, rather than via -X-flags on the GHC commandline, I've noticed
> there were a couple of places where NondecreasingIndentation grammar was used.
>
> What's the current consensus on the use of NondecreasingIndentation? Is
> its use still encouraged?

I like it for things like

    do
      ...
      if exit_early then return () else do
      ... more  stuff ...

Without NondecreasingIndentation this creeps to the right, which isn't a 
good use of whitespace.

Cheers,
Simon


>
> ----
>
> Moreover, I touched several files (over 300) while refactoring, would
> that qualify as "working on this module" in the sense of
>
> | While working on this module you are encouraged to remove it and detab
> | the module (please do the detabbing in a separate patch).
>
> or would that overreach wrt the original intent of the guideline quoted
> above?
>
> Cheers,
>    hvr
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