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[ikiwiki] / doc / todo / nested_preprocessor_directives.mdwn
1 Ikiwiki's preprocessor parser cannot deal with arbitrary nested preprocesor
2 directives. It's possible to nest a directive with single quoted values
3 inside a triple-quoted value of a directive, but that's all.
4
5 It's not possible to unambiguously parse nested quotes, so to support
6 nesting, a new syntax would be needed. Maybe something xml-like?
7
8 > You can, however, unambiguously parse nested square brackets, and I think
9 > that would solve the problem, as long as you never allow the contents of a
10 > directive to contain a *partial* directive, which seems reasonable to me.
11 >
12 > For example, I *think* you can unambiguously parse the following:
13 >
14 >     \[[if test="enabled(template) and templates/foo" then="""
15 >     [[template id=foo content="""Flying Purple People Eater"""]]
16 >     """]]
17 >
18 > --[[JoshTriplett]]