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String Utility Functions

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<!-- ##### FUNCTION exo_str_elide_underscores ##### -->
<para>

</para>

@text: 
@Returns: 


<!-- ##### FUNCTION exo_str_is_equal ##### -->
<para>

</para>

@a: 
@b: 
@Returns: 


<!-- ##### MACRO exo_str_is_empty ##### -->
<para>

</para>

@string: 


<!-- ##### FUNCTION exo_str_looks_like_an_uri ##### -->
<para>

</para>

@str: 
@Returns: 


<!-- ##### FUNCTION exo_str_replace ##### -->
<para>

</para>

@str: 
@pattern: 
@replacement: 
@Returns: 


<!-- ##### FUNCTION exo_strdup_strftime ##### -->
<para>

</para>

@format: 
@tm: 
@Returns: 


<!-- ##### FUNCTION exo_strndupv ##### -->
<para>

</para>

@strv: 
@num: 
@Returns: 


<!-- ##### MACRO I_ ##### -->
<para>

</para>

@string: 


