Provided by: libsdl3-doc_3.2.28+ds-1_all 

NAME
SDL_isgraph - Report if a character is any "printable" except space.
SYNOPSIS
#include <SDL3/SDL_stdinc.h>
int SDL_isgraph(int x);
DESCRIPTION
Be advised that "printable" has a definition that goes back to text terminals from the dawn of computing,
making this a sort of special case function that is not suitable for Unicode (or most any) text
management.
WARNING: Regardless of system locale, this is equivalent to (SDL_isprint(x)) && ((x) != ' ').
FUNCTION PARAMETERS
x character value to check.
RETURN VALUE
Returns non-zero if x falls within the character class, zero otherwise.
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
SDL_isprint(3)
Simple Directmedia Layer SDL 3.2.28 SDL_isgraph(3)