Cluster Is Repaired
My assumption of the root cause of the Cluster glitch appears to have proved out: Textile (at least the version embedded within Cluster) does not like Word’s beloved “Smart Quotes,” because it prefers to create them on its own from straight ASCII (note how they are created from standard quotes to appear curvy in the quoted text above).
Word also smashed up an ellipsis into a single-character triple-dot. However, the ultimate blame lies with PHP’s inability to consider strings as true literals. Or at least I think it is.
If it gives more troubles I’ll try some kind of re-work.