Parenthesis around if/for/while condition is not necessary

[Basile B.]

On Monday, 25 June 2018 at 10:36:46 UTC, Basile B. wrote:
> On Sunday, 24 June 2018 at 23:08:15 UTC, aliak wrote:
>> On Sunday, 24 June 2018 at 11:27:12 UTC, Basile B. wrote:
>>> On Saturday, 23 June 2018 at 06:24:29 UTC, Basile B. wrote:
>>>> On Saturday, 23 June 2018 at 06:18:53 UTC, user1234 wrote:
>>>>> On Saturday, 23 June 2018 at 05:09:13 UTC, aedt wrote:
>>>>>> On Saturday, 23 June 2018 at 04:45:07 UTC, user1234 wrote:
>>>>>>> [...]
>>>>>>
>>>>>> Same thing as the following"
>>>>>> return a && b;
>>>>>>
>>>>>> I'm not saying to drop parens completely, I'm saying why 
>>>>>> is it not optional. D seems to have no problem with 
>>>>>> x.to!string or std.lines
>>>>>
>>>>> I agree that this would be in adequation with certain stuff 
>>>>> of the D syntax, such as parens-less single template 
>>>>> parameter. Someone has to make a DIP for this
>>>>
>>>> Maybe but this is a simple parser thing. For example after 
>>>> reading the discussion here i have tested the idea in my toy 
>>>> programming language 
>>>> (https://github.com/BBasile/styx/commit/83c96d8a789aa82f9bed254ab342ffc4aed4fd88) and i believe that for D this would be as simple ( < 20 SLOC, w/o the tests).
>>>>
>>>>> otherwise we're good for one of this sterile NG discussion 
>>>>> leading to nothing, i.e intellectual mast... well guess the 
>>>>> word.
>>>>
>>>> I'm tempted to try this in DMDFE. Change is simple enough so 
>>>> that if it get rejected no much time is lost.
>>>
>>> FYI this works fine, as expected it's just some small parser 
>>> changes.
>>> I didn't touch to for and foreach for now. I think that 
>>> SwitchStatement is a candidate too.
>>>
>>> https://github.com/BBasile/dmd/commit/5455a65c8fdee5a6d198782d1f168906b59e6d3d
>>>
>>> However note that there's a nice thing with the phobos style 
>>> that won't be that nice anymore:
>>>
>>> if (condition)
>>>     action();
>>> ----^
>>>
>>> if condition)
>>>     action();
>>> ---^
>>> ----^
>>>
>>> It's not nicely aligned anymore !
>>
>> Wow nice, that was quick, would it be much more to make it so 
>> that braces are required with if statements that do not start 
>> with an open paren?
>
> It's in the commit.

https://github.com/BBasile/dmd/commit/5455a65c8fdee5a6d198782d1f168906b59e6d3d#diff-cd066d37445cac534313c0137c2d4bbeR5599