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#pragma once
#include <stdbool.h>
#include <stddef.h>
/** Reduce a path to its simplest form.
* *in and *out can't overlap unless they're equal. Then, the path is modified
* in-place.
*
* @return length of the string in *out, always less than len. Negative if the path was invalid.
*/
int path_simplify(const char *in, char *out, size_t len);
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