Fixed handling of '-' for stdin

src/cmd.cpp

@@ -201,7 +201,7 @@ static constexpr size_t strlen_pre_eq(const char* str){
 
 #define CHECK_VALID_SHORT_ARG(opt, arg, type) \
 	{ \
-		if(next_arg == (argc-1) || !is_##type(arg)){ \
+		if(next_arg == argc || !is_##type(arg)){ \
 			fwprintf(stderr, L"'-%s' requires an argument of type " #type "\n", opt); \
 			ret.error = 1; \
 			break; \
@@ -226,6 +226,8 @@ cmd_args process_cmd_args(int argc, char** argv){
 		}
 		if(!strcmp(argv[i], "--")){
 			escaped = true;
+		}else if(!strcmp(argv[i], "-")){
+			ret.filenames.push_back(argv[i]);
 		}else if(IS_SHORT_OPTION(argv[i])){
 			size_t arg_len = strlen(argv[i]);
 			int next_arg = i+1;

src/roflcat.cpp

@@ -126,6 +126,7 @@ int print_files(cmd_args& args){
 				if(in == L'\n') //Only reset on newline to save print overhead
 					p.reset();
 			}
+			clearerr(stdin);
 		}else{ //everything besides stdin
 			FILE* fp = fopen(args.filenames[i], "r");
 			if(!fp){