In addition to what Andy said, this same behavior was recently implemented in
tools.reader (the Clojure impel of lisp reader)
http://dev.clojure.org/jira/browse/TRDR-36
Erik.
--
i farta
> Den 27. apr. 2016 kl. 07.13 skrev Andy Fingerhut <andy.finger...@gmail.com>:
>
> Frank:
>
> I am pretty sure that the intent is that strings like 077 are read as octal,
> and in Clojure 1.8.0 this is what happens, e.g. (read-string "077") evaluates
> to the integer 63 (decimal), not 77. Thus it is intentional that
> (read-string "08") and (read-string "09") throw exceptions.
>
> Andy
>
>> On Tue, Apr 26, 2016 at 8:51 PM, Frank Pursel <frank.pur...@gmail.com> wrote:
>> I believe the following line should replace the current 1.8.0
>> jvm/clojure/lang/LispReader.java line 68:
>>
>> static Pattern intPat =
>> Pattern.compile(
>>
>> "([-+]?)(?:(0)|(0*[1-9][0-9]*)|0[xX]([0-9A-Fa-f]+)|([0-7]{3})|([1-9][0-9]?)[rR]([0-9A-Za-z]+)|0[0-9]+)(N)?");
>>
>>
>> Without this change the 1.8.0 clojure reader fails on some simple things
>> like:
>>
>> (read-string "08")
>> (read-string "09")
>>
>> I see that the prior commit was trying to get old style octal identifiers to
>> work (and this change doesn't get this right either) but octal can still be
>> correctly read using the radix notation, eg (read-string "8r45") works.
>>
>> Perhaps someone here can get this change or a more sophisticated fix
>> committed that will allow numeric strings with leading zeros to be
>> successfully read.
>>
>> Regards,
>> Frank Pursel
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