:   '''file split''' ''name''

Returns a list whose elements are the path components in ''name''. 
The first element of the list will have the same path type as ''name''. All other elements will be relative. 


***Keep ambiguous path separators***

Path separators will be discarded unless they are needed ensure that an element is unambiguously relative. 
For example, under Unix
======
 file split /foo/~bar/baz
======
returns '''/ foo ./~bar baz''' to ensure that later commands that use the third component do not attempt to perform tilde substitution.

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***Discard double "//"***

[HaO] 2017-04-10:

It might be a side effect, but the following combination may be used to discard double "//" within the specification:

======
file join {*}[file split $Path]
======

Example:
======
% file split //a//b/c//d.txt
//a/b c d.txt
% file join {*}[file split //a//b/c//d.txt]
//a/b/c/d.txt
======

A "//" is allowed at the beginning to specify network resouces (at least on windows), but not within the path.
So, a leading "//" must be preserved, while all others are removed.

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**See also**
   * [file]
   * [file join]
   * [file separator]
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