more on unescaping escapes

bvdp bob at mellowood.ca
Tue Feb 24 03:18:28 CET 2009


Gabriel Genellina wrote:
> En Mon, 23 Feb 2009 23:31:20 -0200, bvdp <bob at mellowood.ca> escribió:
>> Gabriel Genellina wrote:
>>> En Mon, 23 Feb 2009 22:46:34 -0200, bvdp <bob at mellowood.ca> escribió:
>>>> Chris Rebert wrote:
>>>>> On Mon, Feb 23, 2009 at 4:26 PM, bvdp <bob at mellowood.ca> wrote:
> 
>>>>> [problem with Python and Windows paths using backslashes]
>>>>>  Is there any particular reason you can't just internally use regular
>>>>> forward-slashes for the paths? [...]
>>>>
>>>> you are absolutely right! Just use '/' on both systems and be done 
>>>> with it. Of course I still need to use \x20 for spaces, but that is 
>>>> easy.
>>> Why is that? "\x20" is exactly the same as " ". It's not like %20 in 
>>> URLs, that becomes a space only after decoding.
>>
>> I need to use the \x20 because of my parser. I'm reading unquoted 
>> lines from a file. The file creater needs to use the form "foo\x20bar" 
>> without the quotes in the file so my parser can read it as a single 
>> token. Later, the string/token needs to be decoded with the \x20 
>> converted to a space.
>>
>> So, in my file "foo bar" (no quotes) is read as 2 tokens; "foo\x20bar" 
>> is one.
>>
>> So, it's not really a problem of what happens when you assign a string 
>> in the form "foo bar", rather how to convert the \x20 in a string to a 
>> space. I think the \\ just complicates the entire issue.
> 
> Just thinking, if you was reading the string from a file, why were you 
> worried about \\ and \ in the first place? (Ok, you moved to use / so 
> this is moot now).
> 

Just cruft introduced while I was trying to figure it all out. Having to 
figure the \\ and \x20 at same time with file and keyboard input just 
confused the entire issue :) Having the user set a line like 
c:\\Program\x20File ... works just fine. I'll suggest he use 
c:/program\x20files to make it bit simple for HIM, not my parser. 
Unfortunately, due to some bad design decisions on my part about 5 years 
ago I'm afraid I'm stuck with the \x20.

Thanks.




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