aligning text with space-normalized text

[Steven Bethard]

John Machin wrote:
> Steven Bethard wrote:
> 
>> John Machin wrote:
>>
>>> For example, text = 'foo bar', chunks = ['foobar']
>>
>> This doesn't match the (admittedly vague) spec
> 
> That is *exactly* my point -- it is not valid input, and you are not 
> reporting all cases of invalid input; you have an exception where the 
> non-spaces are impossible, but no exception where whitespaces are 
> impossible.

Well, the input should never look like the above.  But if for some 
reason it did, I wouldn't want the error; I'd want the indices.  So:
     text = 'foo bar'
     chunks = ['foobar']
should produce:
     [(0, 7)]
not an exception.

STeVe