Chris has pointed out the two reasons we don't support #{} by default:
backwards compatibility and escaping. I don't want to surprise people
who happen to use that sequence of characters with weird behavior.
However, now that it's standard in filters, I'd be more open to making
it the default.
Any proposals for how it would interact with auto-HTML-escaping?
Chris Eppstein wrote:
> Yes, if you change your double quotes to single quotes.
>
> But \#{h @user.name} is more straight forward and already supported in
> == mode.
>
> Btw, I'm still +1 on this despite the need to occasionally escape.
> Unfortunately, the fact that escaping is necessary means that it is
> not a backwards compatible change.
>
> chris
>
> On Sep 30, 5:13 pm, Lawrence Pit <[EMAIL PROTECTED]> wrote:
>
>> An example interpolation is #{h @user.name}
>>
>> could be escaped as:
>>
>> An example interpolation is #{ "#{h @user.name}" }
>>
>> Lawrence
>>
>>
>>> It should be noted that doing so would create a need for escaping the
>>> #{ sequence if it occurs naturally in text.
>>>
>>> Chris
>>>
>>> On Sep 30, 4:45 pm, Lawrence Pit <[EMAIL PROTECTED]> wrote:
>>>
>>>> That's how I do it as well... I rarely use the == syntax. Only in cases
>>>> like these:
>>>>
>>>> == Hello #{h @user.name},
>>>>
>>>> which is nicer compared to:
>>>>
>>>> Hello
>>>> = succeed ',' do
>>>> = h @user.name
>>>>
>>>> But of course simply this is even nicer:
>>>>
>>>> Hello #{h @user.name},
>>>>
>>>> As indeed is already possible when defined within a filter block.
>>>>
>>>> I vote +1 on the proposal.
>>>>
>>>> Lawrence
>>>>
>>>>> While I don't find anything conceptually wrong and would even +1 this
>>>>> because there's times it would be convenient, I simply do this:
>>>>>
>>>>> http://gist.github.com/13840
>>>>>
>>>>> -chris
>>>>>
>>>>> On Sep 30, 6:16 am, Jacques Crocker <[EMAIL PROTECTED]> wrote:
>>>>>
>>>>>> In the process of bombarding the world with open source haml rails
>>>>>> apps (see here, here, here), I've definitely noticed a few small
>>>>>> things haml could do to increase the readability of haml view code.
>>>>>>
>>>>>> The most important one that I would like to suggest is some kind of
>>>>>> universal interpolation of #{} without the requirement of beginning
>>>>>> the line with ==. I've been using == so much lately that its starting
>>>>>> to look pretty ugly. Seems like it would help a lot if that it was the
>>>>>> standard. So my question to haml users is: what would be the speed and
>>>>>> functionality implications of allowing #{} to be used anywhere without
>>>>>> the requirement of ==?
>>>>>>
>>>>>> Here's a quick code example:http://gist.github.com/13805
>>>>>>
>>>>>> I imagine automatically treating every static content line as if it
>>>>>> were a == would make haml an order of magnitude slower. The trick
>>>>>> would be to specifically recognize the existence of #{} in content
>>>>>> blocks (hopefully via a super fast content eval) and automatically
>>>>>> turn the evaluation of that line to ==.
>>>>>>
>>>>>> I spent a little time looking at the the haml codebase to verify my
>>>>>> findings but things haven't clicked for me yet. Would love any
>>>>>> feedback from someone who has a better handle on the parser on whether
>>>>>> this is possible without a huge problem in performance. Aside from the
>>>>>> implementation details, is there anyone who would object functionality-
>>>>>> wise to being able to use #{} anywhere in normal content blocks? Since
>>>>>> #{} is a rarely used html token I don't think it would conflict with
>>>>>> peoples existing view code. And since this type of automatic
>>>>>> interpolation is already done by default within Filters, it seems a
>>>>>> natural extension to use it in normal content blocks.
>>>>>>
>>>>>> Would love feedback on anything regarding the idea or implementation
>>>>>> challenges. Maybe I'm way off base here, but if it sounds like
>>>>>> something that had a remote chance to be added to haml core, I can do
>>>>>> some hacking on a fork and see how it goes.
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> -Jacques
>>>>>> railsjedi.com
>>>>>>
>>
> >
>
>
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