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Utility Functions

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<!-- ##### FUNCTION thunar_vfs_canonicalize_filename ##### -->
<para>

</para>

@filename: 
@Returns: 


<!-- ##### FUNCTION thunar_vfs_expand_filename ##### -->
<para>

</para>

@filename: 
@error: 
@Returns: 


<!-- ##### FUNCTION thunar_vfs_humanize_size ##### -->
<para>

</para>

@size: 
@buffer: 
@buflen: 
@Returns: 


