Function isBlankString 

unsafe fn isBlankString(s: *const c_char) -> Rboolean

Check if a string is blank (empty or only whitespace). Checked wrapper for isBlankString. Calls isBlankString_unchecked and routes through with_r_thread. Generated from source location line 3645, column 8. Generated from source file miniextendr-api/src/ffi.rs.