Pavol Juhas <[email protected]> wrote:
> On Friday, December 16, 2016 at 1:58:59 PM UTC-5, Dominique Pelle wrote:
> ...
>> While testing, I found what looks like a possible small bug:
>>
>> :echo str2float(" + 1.2")
>> 1.2
>>
>> :echo str2float(" - 1.2")
>> 0.0
>>
>> I would expect 2nd command to print -1.2, or is
>> there a reason for non-symmetrical behavior?
>
> Python 3.5 raises ValueError for both of those strings. I think
> that is a reasonable behavior, because signs are thus required to be
> a part of the number word. "+ 1.2" could be considered as much
> invalid as is "1 . 2".
I also think that it's odd to accept spaces between the
sign and the digits. However, Vim already accepts spaces
after the - sign and not after the + sign (inconsistency addressed
in patch in this thread). If we instead give an error for
str2float(" + 1.2"), then we break compatibility and potentially
break existing scripts.
Dominique
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