[Python-Dev] Yet another string formatting proposal

Oren Tirosh oren-py-d@hishome.net
Thu, 21 Nov 2002 17:46:18 -0500

On Thu, Nov 21, 2002 at 10:22:48PM +0100, Fredrik Lundh wrote:
> Oren Tirosh wrote:    
> > Yes, it might break some existing code that doesn't use proper \\ escaping
> > or raw strings for regular expression. Note that such code is already 
> > broken in the sense that it uses an undefined escape.
> "not proper"?  "broken"?  "undefined"?
> Please read the section on string escapes in the *Python* language
> reference, and try again.  Start here:
>     http://www.python.org/doc/current/ref/strings.html

   Unlike Standard C, all UNRECOGNIZED escape sequences are left in 
   the string unchanged, i.e., the backslash is left in the string. 
   (This behavior is useful when deBUGging: if an escape sequence is 
   MISTYPED, the resulting output is more easily recognized as 

My mistake. I should have RTFM. There was no excuse for me calling such 
escape sequences "undefined" and not "proper" when the documentation 
describes escape sequences not listed in the table as merely 
"unrecognized" or possibly "mistyped". Sorry.