[web-devel] Fwd: [hamlet] Clearer error for mixed spaces / tabs nesting in cassius (#2)

[Michael Snoyman]

So basically, we have two choices[1]:

* Allow *only* tabs or *only* spaces.
* Disallow tabs entirely.

Out of curiosity, is any actually using tabs in Hamlet/Cassius? I'm
leaning towards the second option if only because it's incredibly
simple to implement.

Michael

[1] In case anyone's worried, this discussion is only relevant for the
first whitespace characters on the line, otherwise I don't see any
reason to care about tab versus spaces.

On Fri, Jun 3, 2011 at 3:56 PM, Greg Weber <greg at gregweber.info> wrote:
> I think the 1 tab = X spaces rule is bad: it implies a mixing of tabs and
> spaces, which only leads to problems.
> Ideally one could choose between using either 1 tab or the same multiple of
> spaces, but never mix the two.
>
> On Fri, Jun 3, 2011 at 5:37 AM, Aristid Breitkreuz <aristidb at googlemail.com>
> wrote:
>>
>> Ban tabs.
>>
>> Am 03.06.2011 13:58 schrieb "Michael Snoyman" <michael at snoyman.com>:
>> > I don't have a strong opinion on tabs/spaces for Hamlet and Cassius
>> > (the discussion isn't relevant for Julius or Lucius). So I thought I'd
>> > just throw this to the web-devel list: what do you guys think?
>> >
>> > Currently, 1 tab = 4 spaces for indentation purposes. I personally
>> > never use hard tabs for Haskell, so the question doesn't affect me.
>> >
>> > Michael
>> >
>> >
>> > ---------- Forwarded message ----------
>> > From: Shimuuar
>> > <reply+i-326148-baa0eff244395e870f290821538bf79d83ec1190 at reply.github.com>
>> > Date: Wed, Jun 1, 2011 at 7:33 PM
>> > Subject: Re: [hamlet] Clearer error for mixed spaces / tabs nesting in
>> > cassius (#2)
>> > To: michael at snoyman.com
>> >
>> >
>> > I'd vote to ban tabs. They may change meaning of program silently. If
>> > your editor and hamlet/cassius have different tab width it may lead
>> > either to error or it could be parsed not as you expected. Second case
>> > is real. I encountered it.
>> >
>> > IMHO mixing tabs and significant indentation is generally bad idea™
>> >
>> > --
>> > Reply to this email directly or view it on GitHub:
>> > https://github.com/snoyberg/hamlet/issues/2#comment_1275487
>> >
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