[vdr] Problem with ^A in Filename

Klaus Schmidinger Klaus.Schmidinger at cadsoft.de
Sun Apr 16 14:52:01 CEST 2006

Klaus Schmidinger wrote:
> Udo Richter wrote:
>> Klaus Schmidinger wrote:
>>> Patrick Fischer wrote:
>>>> @Ripley's unglaubliche Welt
>>>> will be saved as (only shown if I pipe "ll . > out.txt" and look at 
>>>> the file or by using xterm)
>>>> @Ripley^As_unglaubliche_Welt
>>> The single quote character is mapped to 0x01 so that in shell script
>>> it is guaranteed that no recording name contains such a character, and
>>> you can always be sure that enclosing a recording name in single quotes
>>> will work.
>> This is only true in classic mode. In VFAT-mode, unsafe characters 
>> like this are mapped to literal ascii codes, in this case '#27'.
>> Using ASCII control chars (0x01 alias SOH for ', 0x02 alias STX for /) 
>> in file names doesn't sound like a good idea to me anyway. Wouldn't it 
>> be better to use '#27' and '#2F' (and consequently '#23' for #) in 
>> non-VFAT mode too?
>> Cheers,
>> Udo
> I've now made it so that in "normal" mode (non-VFAT) the single quote
> is not mapped any more (IIRC I thought that this might be necessary
> for external commands, but with strescape() and "..." this works just
> fine). The '/' and '~' are swapped between internal and external
> representation, so that no more "control" characters are used.
> For backwards compatibility 0x01, 0x02 and 0x03 are still recognized.
> Please give the attached patch a try.
> Klaus

Well, my previous patch was actually much longer than necessary.
That's because originally I had followed that path of actually
en-/decoding these characters, but then I realized that this might
cause trouble with existing recording names that already contain
an unescaped '#'. Now I realized that a much smaller patch should
do the trick just as well, so here's a second try.

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