:sig
String path_join(String base, String child)

:params
base : base path
child : path to append
return value : the two joined with a single separator

:content
Joins two path fragments with exactly one separator, regardless of whether `base` ends in a slash or `child` begins with one. Use it instead of string concatenation to build paths safely.

:example
print(path_join("/var/www", "site/index.uce"), "\n");

:see
>sys
basename
dirname
path_real
