When array append without parens doesn't work?

[Sebastian Gniazdowski <sgniazdowski@xxxxxxxxx>]

Hi,
I recall once reporting a problem to this list, to which Bart responded
with "you'll thank me later" about the correct array-append syntax, which
is arr+=( ... ), not arr+=.... I cannot find this message.

I've only found a report on IRC that's related, however, what's in it
appears to work fine: http://sprunge.us/sUNWBk

Can anyone provide an example of the "almost-works" property of the +=...
syntax?

-- 
Sebastian Gniazdowski
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