46 #define	isvisible(c,flag)						\  argument
47 	(((c) == '\\' || (flag & VIS_ALL) == 0) &&			\
50 		(flag & VIS_GLOB) == 0) && isgraph((u_char)(c))) ||	\
51 	((flag & VIS_SP) == 0 && (c) == ' ') ||				\
52 	((flag & VIS_TAB) == 0 && (c) == '\t') ||			\
53 	((flag & VIS_NL) == 0 && (c) == '\n') ||			\
54 	((flag & VIS_SAFE) && ((c) == '\b' ||				\
62 vis(char *dst, int c, int flag, int nextc)  in vis()  argument
64 	if (isvisible(c, flag)) {  in vis()
65 		if ((c == '"' && (flag & VIS_DQ) != 0) ||  in vis()
66 		    (c == '\\' && (flag & VIS_NOSLASH) == 0))  in vis()
73 	if (flag & VIS_CSTYLE) {  in vis()
117 	if (((c & 0177) == ' ') || (flag & VIS_OCTAL) ||  in vis()
118 	    ((flag & VIS_GLOB) && (c == '*' || c == '?' || c == '[' || c == '#'))) {  in vis()
125 	if ((flag & VIS_NOSLASH) == 0)  in vis()
161 strvis(char *dst, const char *src, int flag)  in strvis()  argument
167 		dst = vis(dst, c, flag, *++src);  in strvis()
174 strnvis(char *dst, const char *src, size_t siz, int flag)  in strnvis()  argument
182 		if (isvisible(c, flag)) {  in strnvis()
183 			if ((c == '"' && (flag & VIS_DQ) != 0) ||  in strnvis()
184 			    (c == '\\' && (flag & VIS_NOSLASH) == 0)) {  in strnvis()
196 			i = vis(tbuf, c, flag, *++src) - tbuf;  in strnvis()
211 			dst += vis(tbuf, c, flag, *++src) - tbuf;  in strnvis()
217 stravis(char **outp, const char *src, int flag)  in stravis()  argument
225 	len = strvis(buf, src, flag);  in stravis()
236 strvisx(char *dst, const char *src, size_t len, int flag)  in strvisx()  argument
243 		dst = vis(dst, c, flag, *++src);  in strvisx()
246 		dst = vis(dst, *src, flag, '\0');  in strvisx()