I seem to recall that the brave (ie, risky) decisions to remove octal was taken 
over 11 years ago. Except for Opera, no-one has dared to implement the 
decision. That probably says something.

I also seem to recall that implementing octal in JScript .NET was far easier 
than updating all of the test cases that failed if I did not. ;-)

Herman

From: [email protected] [mailto:[email protected]] On 
Behalf Of Allen Wirfs-Brock
Sent: Friday, February 20, 2009 12:15 PM
To: [email protected]
Subject: parseInt and implicit octal constants

15.1.2.2 says:
When radix is 0 or undefined and the string's number begins with a 0 digit not 
followed by an x or X, then the implementation may, at its discretion, 
interpret the number either as being octal or as being decimal. Implementations 
are encouraged to interpret numbers in this case as being decimal.

This is item 3.10 in the JScript Deviations document and my notes  from when we 
reviewed the deviations document for
ES3.1 changes says we decided to disallow the octal interpretation in ES3.1.  
However that change has never been made in the ES3.1 draft.

Does anyone remember if there was a subsequent explicit decision to keep the 
ES3 status quo or is this just an editing oversight?

Note that IE, FF, and Safari all interpret leading 0 strings as octal while 
Opera does not.  So, arguably ,the de facto standard is to support such octal 
strings.

The argument for removing the option and mandating either one of the 
alternatives is improved interoperability across all browsers over the long 
term.
The argument for disallowing such implicit octal strings is that they are an 
error hazard.
The argument of requiring support of implicit octal strings is that it is the 
de facto standard of the web and that disallowing them may break existing 
webapps.

The cop-out is to just leave it as it is.
The safe decision is to mandate the current  de facto standard.
The brave (ie, risky) decision for a better long term language is to disallow 
octal.

Thoughts?
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