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const char *
pr29_strerror (Pr29_rc rc);
Convert a return code integer to a text string. This string can be used to output a diagnostic message to the user.
PR29_SUCCESS: Successful operation.  This value is guaranteed to
  always be zero, the remaining ones are only guaranteed to hold
  non-zero values, for logical comparison purposes.
PR29_PROBLEM: A problem sequence was encountered.
PR29_STRINGPREP_ERROR: The character set conversion failed (only
  for pr29_8z()).
int pr29_4 (const uint32_t *in,size_t len);
Check the input to see if it may be normalized into different strings by different NFKC implementations, due to an anomaly in the NFKC specifications.
| in | input array with unicode code points. | |
| len | length of input array with unicode code points. | 
 Returns the Pr29_rc value PR29_SUCCESS on success,
and PR29_PROBLEM if the input sequence is a "problem sequence"
(i.e., may be normalized into different strings by different
implementations).
int
pr29_4z (const uint32_t *in);
Check the input to see if it may be normalized into different strings by different NFKC implementations, due to an anomaly in the NFKC specifications.
 Returns the Pr29_rc value PR29_SUCCESS on success,
and PR29_PROBLEM if the input sequence is a "problem sequence"
(i.e., may be normalized into different strings by different
implementations).
int
pr29_8z (const char *in);
Check the input to see if it may be normalized into different strings by different NFKC implementations, due to an anomaly in the NFKC specifications.
 Returns the Pr29_rc value PR29_SUCCESS on success,
and PR29_PROBLEM if the input sequence is a "problem sequence"
(i.e., may be normalized into different strings by different
implementations), or PR29_STRINGPREP_ERROR if there was a
problem converting the string from UTF-8 to UCS-4.
#define IDNAPI
Symbol holding shared library API visibility decorator.
This is used internally by the library header file and should never be used or modified by the application.
https://www.gnu.org/software/gnulib/manual/html_node/Exported-Symbols-of-Shared-Libraries.html
Enumerated return codes for pr29_4(), pr29_4z(), pr29_8z().  The
value 0 is guaranteed to always correspond to success.
| Successful operation. This value is guaranteed to always be zero, the remaining ones are only guaranteed to hold non-zero values, for logical comparison purposes. | ||
| A problem sequence was encountered. | ||
| The character set conversion failed (only
for  |