From: "LeoMoser

> > In poetry it would probably be variable, since most languages have
> > allowances for reduction or elongation of vowels to meet poetic
> > demands.

> I wonder if this is unversally the case. It may
> be largely European languages that do this.
> Do the Japanese create haiku by swallowing
> syllables?
> Did the Tang poets do anything to the
> sounds of characters to make them fit
> poetry?

I'm no authority on either subject, but my gut reaction is to say 'no'. And
since neither has an apostrophe to deal with dropped sounds  la "o'er,
e'er, diff'rent, differ'nt, heav'n", etc., however would they manage it? :)