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Number   :  281
Date     :  2001-06-24
Author   :  Kan Yabumoto
Subject  :  Corrections of my earlier messages
Size(KB) :  2



Let me correct errors in my earlier messages posted in this group.

In my earlier post (Msg #260)

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Gabe's original command line had both /H0 and /ATH.
/ATH is synonymous to /H. Therefore /H0/ATH is the
same as /H0/H which can be specified simply by /H.
The /AT switch was added as a generalized scheme to
handle any combination of attribute-based file selection.
If the H-bit (hidden attribute) is the only concern
here, /H is simpler and quite intuitive as well.
------------------------------------------------------

This was quite wrong and I tried to correct myself.
In Msg #267 I made the following (misleading) statement:

================================================================
Let me correct my mistake in my own explanation in my
Msg #260 with regard to the relationship to /ATH and /H.
I picked the wrong switch.

/ATH is not the same as /H.

--------------------------------------------------------------
/ATH excludes the files which do not have the H-bit set.
/Ho (exactly the same as /ATH)
/H excludes nothing cancelling /H0 (which excludes hidden files)
-------------------------------------------------------------------
===================================================================

This was not 100% correct either. So, let me offer my 2nd attempt
to explain this.

The three hidden file-related switches can be substituted by
combinations of /AT and /AX as follows:

/H0 (default value) is equivalent to /AXH/AXS
/H (regular switch to include hidden and system files)
/Ho (hidden only) is equivalent to /ATHS

My earlier statement which said "/Ho is exactly the same as /ATH"
forgot the fact that these switches are affected by the System file
attributes in addition to the Hidden file attribute.


/AXH is to exclude the files whose Hidden file attribute is set.
/AXS is to exclude the files whose System file attribute is set.
By combining these two, it reads "the /H0 switch excludes when
H-bit is set and also when S-bit is set.
(/AXHS would exclude files whose H-bit and S-bit are both set.)

/ATHS is to select files with either H or S bits set (in other
word, this switch excludes files if both H-bit and S-bit
are 0). This is how the /Ho switch behaves.

Sorry for the confusion (I was confused, too).

Kan Yabumoto

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