Alan & Kim Zimmerman alan.zimm at gmail.com
Fri May 26 11:14:13 UTC 2017

When I was working through the ppr to use HsParTy everywhere it was not
clear whether there were any usages that required maybeParen, so I left it

I can try to strip then all out and see what happens.


On 26 May 2017 at 10:54, Simon Peyton Jones <simonpj at microsoft.com> wrote:

> Alan
> Do you know why HsTypes.ppr_mono_ty contains any uses of ‘maybeParen’?
> Shouldn’t the parens all be put in by HsParTy?
> I tripped over this when I mistakenly added what I thought were missing
> maybeParen calls for HsAppTy and HsAppTys, but that was flagged as an error
> by a test in tests/printer.
> So why are there /any/ maybeParen calls?
> Simon
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