Hussein Shafie escribi?:
> Andy Black wrote:
>> On 10/1/2009 8:04 AM, Hussein Shafie wrote:
>>> Andy Black wrote:
>>>
>>>> I recently noticed that the %P macro variable on Windows behaves
>>>> differently when the path is at the top (or root) directory than when
>>>> the path contains a directory. When it is at the root, it ends with a
>>>> backslash (e.g. "E:\") whereas when it contains a directory, it does not
>>>> end with a backslash (e.g. "E:\My Data"). ..
>>> ...The filename of a directory is *not* expected to end with '/' (or '\' on
>>> Windows). That's why this does not need to be documented,
>>>
>>> Note the filename of the root directory of a filesystem is always
>>> singular. This filename is '/' on Unix and something like c:\ on
>>> windows. That is, %P necessarily ends with '/' (or '\' on Windows) for
>>> the root directory of a filesystem.
>>>
>> Thanks, Hussein, for the good explanation.
>>
>> I'm wondering if it would be possible for XXE to detect this internally
>> and remove the final slash for when the filename is at the root. The
>> reason is that then when one has a sequence like %{P}%{S}, one never
>> gets double slashes when %{P} happens to be at the root. I had to do
>> some fancy footwork in my commands to overcome this issue. It was a
>> problem for one command
>>
>> <cfg:command name="run" parameter="[Windows] del
>> "%{P}%{S}XLingPaperPDFTemp%{S}%{R}.txt""/>
>>
>> where it failed to run if the file was at the top directory. It gave a
>> message of "The network path was not found" presumably because it saw
>> the "\\" and interpreted it as network path.
>>
>> Thanks for considering this request.
>
> I'm sorry but we'll not change current behavior[*]. What if a command
> really needs to act on a directory? In such case the %P of the root
> directory would be substituted with something like "C:", which means
> nothing at all.
It is worse than that. In Windows, C: as a directory means "the current
directory on the C: disk". Please remember that in Windows the concept of
"current directory" is set on a per-disk basis.
If you want to refer to the root of the C: disk you must write C:\, as
stated before.
>
> ---
> [*] Moreover this would break a large number of existing commands. The
> only solution would be to support a new variable, e.g. %Q.
--
Manuel Collado - http://lml.ls.fi.upm.es/~mcollado
