Report if a character is a punctuation mark.
**WARNING**: Regardless of system locale, this is equivalent to ((SDL_isgraph(x)) && (!SDL_isalnum(x))).
\param x character value to check. \returns non-zero if x falls within the character class, zero otherwise.
\threadsafety It is safe to call this function from any thread.
\since This function is available since SDL 3.2.0.
\sa SDL_isgraph \sa SDL_isalnum
See Implementation
Report if a character is a punctuation mark.
**WARNING**: Regardless of system locale, this is equivalent to ((SDL_isgraph(x)) && (!SDL_isalnum(x))).
\param x character value to check. \returns non-zero if x falls within the character class, zero otherwise.
\threadsafety It is safe to call this function from any thread.
\since This function is available since SDL 3.2.0.
\sa SDL_isgraph \sa SDL_isalnum