How does your regular expression fail?

A first step would be to explain the regular expression and tell us in English words what ([.]?) is supposed to do.

Ideally, describe in English what the complete regular expression should do.

My approach to solving the problem would be to take all parts of a string between double quotes and check each part that it doesn't contain a space. Alternatively, look at all "words" that are delimited with whitespace, and check that they either contain no double quotes or start with a double quote and end with a double quote.

Update: I misread part of the problem:

my "dog shepherd"     <-- valid

[download]

So that would imply that simply checking for an even number of double quotes is the simplest part.

In reply to Re: validating a quoted string by Corion
in thread validating a quoted string by hellosarathy

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