This might sound strange, but these are human interfaces which are hard to test from some level of complexity on.

I'm sure there are plenty of incompatible solutions, but nobody would notice they are different.

For instance, what about single quotes without closing partner? Or quotes without neighboring whitespace?

Do users even expect them to be parsed in a meaningful way?

The behavior may differ between different solutions, while all are conceived correct.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^4: Parsing a line of text items by LanX
in thread Parsing a line of text items by mikkoi

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