On Thu, Mar 22, 2012 at 10:28 AM, Adam Wight <[email protected]> wrote: > So, in the course of trying to implement user signature processing in > the PEGjs grammar (https://bugzilla.wikimedia.org/show_bug.cgi?id=35392), > it occurred to me that this is in a whole new class of transformation > function. "~~~~" is actually replaced in the wikitext during the > round-trip of saving on the server. Ha ha, not the quaint little > evening project I thought I was taking on! > > Looking at includes/parser/Parser.php::pstPass2, in addition to user > signatures, pre-save transformations can also insert the current > timestamp, do a literal transclusion using the {{subst: tag, or > complete the "context" of a wikilink. > > Implementing this class of transformation in the VisualEditor gets > tricky because the client wikitext must be kept in sync. Is there > already a provision made for mutating wikitext after a round-trip? >
These sorts of things really should be happening *in* the editor, rather than in the parser. We only have to put ~~~~ in because the original editor was too primitive to have a nice "insert signature" live function. So I think it's worth really rethinking how these things get done for the new paradigm. :) -- brion
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