I was intending on eventually writing my own HAML-type language in Python, but it looks like with SHPAML, I won't have to. Because SHPAML supports raw HTML and doesn't do anything with the {} characters, I can use SHPAML in conjunction with my existing Jinja2 templates. This will enable me to convert my templates organically. The intermediate HTML/Jinja representation doesn't need to appear on disk, so this really looks like an easy way to add "cute" HTML syntax to and existing Python text templating language.
FWIW, there's a C implementation of Markdown called "discount" (http://www.pell.portland.or.us/~orc/Code/discount/) which is crazy fast, easy to embed, and has a couple nice extensions.
(Also, "SHPAML"? Gross.)
SHPAML is not a pseudo-programming syntax. It is purely a markup language, so there are no programming constructs.
SHPAML very deliberately tries to be a lightweight abstraction on top of HTML, unlike wikis and Markdown, which operate at a higher level abstraction. I am a huge fan of wikis, so I value the higher level abstraction at times, but I also see the need for an in-between solution.
I have not used Markdown much, but I see its merits as well.
I'm not being critical of your tool in particular so much as wary of the flock of thin syntax transformers that have come out lately. They're fun projects, but adding yet another mutually incompatible data format is probably only a net gain under relatively specific circumstances (small teams, for starters). I like Markdown in this regard because it's downwardly compatible with how people would write anyway. You're right that it's at a different level of abstraction, though.
And about the name - I'm really tired of hearing the same Monty Python jokes all the time, but that's my problem.
I've started authoring websites in 1996 with just Notepad and I still hand-write my HTML on a daily basis.
The problem with HTML has been (and will be, for a long time) that there is no WYSIWYG editor that can offer quite the same quality as handwritten HTML.
In fact, if you're dealing with HTML from a WYSIWYG perspective, you're most likely ignorant of the language. The distinctions between divisions and paragraphs, between links and spans, are not something that is adequately reflected by an input editor purely concerned with visuals.
Just as the purpose of CleverCSS or it's Ruby predecessor is making it easier to write CSS by cutting down on the redundancy (and even by increasing the level of abstraction a fair bit), the purpose of SHPAML is making it easier to write HTML by cutting down on the redundancy of closing tags, angle brackets and the verbosity of divs, spans, ids and classes, thus letting you express more directly what you mean.
You don't have to like it. It's mostly a stylistic choice, but it means little overhead and can help HTML authors a lot by cutting down on the usual boilerplate. Just like frameworks and syntactic sugar make it easier for programmers (though the argument could easily be applied to them as well -- how dare they find it easier to code with less boilerplate if the actual writing is the smallest part in creating a functioning program).
While generating stub code for class declarations, getters, setters, etc., can help with writing boilerplate-y OO code quickly, anyone trying to read it to decipher its intent will still have to deal with all the clutter. That's more likely to cause problems in the long run.