Add missing comment for the offset argument of tokenize. Add error checko on the offset.
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@@ -61,7 +61,7 @@ int unlink(const char *path);
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int symlink(const char *linkname, const char *path);
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/// @brief Read the symbolic link, if present.
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/// @param file the file for which we want to read the symbolic link information.
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/// @param path the file for which we want to read the symbolic link information.
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/// @param buffer the buffer where we will store the symbolic link path.
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/// @param bufsize the size of the buffer.
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/// @return The number of read characters on success, -1 otherwise and errno is set to indicate the error.
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