TODO implement this in janet

• Scribble consists of plain text and markers.
• Markers take the form @command[lisp symbols]{text}.
• All contents are converted to a Lisp list. Plain text becomes strings while markers become S-expressions.
• The contents of balanced brackets are passed as Lisp symbols. So @foo[bar] -> (foo bar)
• The contents of balanced braces are passed as Strings. So @foo{bar} -> (foo "bar").
• Brackets or braces may be omitted.
• "At" symbols may stand alone for comments or literal injections of S-expressions.
• Symbol names can be escaped with @|foo|, primarily used to prevent valid Lisp symbols from getting scooped up when next to prose.
• A backslash before an at or pipe escapes it.
• Pipe strings are for inserting verbatim text. They will consume until the closing string.
• Pipe strings can have custom escapes added between the pipe and bracket. The closing symbol must appear there too--with one edge case: parenthesis, brackets, and chevrons are flipped so open symbols in the opener become close symbols in the closer.
• Pipe strings at the end of a line suppress the line from having its newline trimmed. This is the 'line joiner' convention.
• Strings which appear consecutively in a group are trimmed at both ends and merged together. Strings which consist solely of a new line (blank lines) are not merged; they signify a paragraph break so the strings remain separated.

Keep the following in mind when trying to reason about a Scribble file:

• Groups are looking for their close markers, but will count up and down brackets and braces found inside. They will only close when the symbols are both balanced *and* the right closing sigils are present. This makes it possible to nest markup.
• Text markup is not parsed unless the command you call wants it to be.

Pipe strings

|{do not process my monster truck|}
|-farp-{for example, |{ is used to suppress }| code valuation}-farp-|

Comments

@; this entire line is commented
Hello @;{stupid person} valued customer! @; "stupid person" is commented

Literal injections of S-expressions

@(florp) @; this will insert a call to "florp"