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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