I'd also like to suggest the removal of the workaround (occupying most of the first half of parser.php doQuotes) dealing with confusion of quotes-as-text and quotes-as-markup within words. In other words, the workaround provides that "l'''italic''plain" renders as "l<i>italic</i>plain".
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Hopefully its use is rather rare; would it be possible to run a scan to find out more conclusively?
Fatal error: failed assert( not_much_in_use ); on line 345 :) This is widely used (at least) on w:fr: and is *required* - many words starting with a vowel will yield a leading "l'", sometimes we want to highlight only the word after.
Thank you for your time, Andrew
Nicolas