On 28 Feb 2012, at 20:50, Marco Borsari wrote:

> on system with long file name support activated (I have FreeDos with doslfn), 
> the example below types all files instead of directory only.

That is by design, see 
http://www.freepascal.org/docs-html/rtl/sysutils/findfirst.html (the same goes 
for the findfirst from the Dos unit), in particular:

***
It is a common misconception that Attr specifies a set of attributes which must 
be matched in order for a file to be included in the list. This is not so: The 
value of Attr specifies additional attributes, this means that the returned 
files are either normal files or have an attribute which is present in Attr.

Specifically: specifying faDirectory as a value for Attr does not mean that 
only directories will be returned. Normal files and directories will be 
returned.
***

You have to check the attributes of the returned entries to see whether they 
match what you want. This is TP/Delphi-compatible.


Jonas_______________________________________________
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