62 vis(char *dst, int c, int flag, int nextc)  in vis()  argument
67 			*dst++ = '\\';  in vis()
68 		*dst++ = c;  in vis()
69 		*dst = '\0';  in vis()
70 		return (dst);  in vis()
76 			*dst++ = '\\';  in vis()
77 			*dst++ = 'n';  in vis()
80 			*dst++ = '\\';  in vis()
81 			*dst++ = 'r';  in vis()
84 			*dst++ = '\\';  in vis()
85 			*dst++ = 'b';  in vis()
88 			*dst++ = '\\';  in vis()
89 			*dst++ = 'a';  in vis()
92 			*dst++ = '\\';  in vis()
93 			*dst++ = 'v';  in vis()
96 			*dst++ = '\\';  in vis()
97 			*dst++ = 't';  in vis()
100 			*dst++ = '\\';  in vis()
101 			*dst++ = 'f';  in vis()
104 			*dst++ = '\\';  in vis()
105 			*dst++ = 's';  in vis()
108 			*dst++ = '\\';  in vis()
109 			*dst++ = '0';  in vis()
111 				*dst++ = '0';  in vis()
112 				*dst++ = '0';  in vis()
119 		*dst++ = '\\';  in vis()
120 		*dst++ = ((u_char)c >> 6 & 07) + '0';  in vis()
121 		*dst++ = ((u_char)c >> 3 & 07) + '0';  in vis()
122 		*dst++ = ((u_char)c & 07) + '0';  in vis()
126 		*dst++ = '\\';  in vis()
129 		*dst++ = 'M';  in vis()
132 		*dst++ = '^';  in vis()
134 			*dst++ = '?';  in vis()
136 			*dst++ = c + '@';  in vis()
138 		*dst++ = '-';  in vis()
139 		*dst++ = c;  in vis()
142 	*dst = '\0';  in vis()
143 	return (dst);  in vis()
161 strvis(char *dst, const char *src, int flag)  in strvis()  argument
166 	for (start = dst; (c = *src);)  in strvis()
167 		dst = vis(dst, c, flag, *++src);  in strvis()
168 	*dst = '\0';  in strvis()
169 	return (dst - start);  in strvis()
174 strnvis(char *dst, const char *src, size_t siz, int flag)  in strnvis()  argument
181 	for (start = dst, end = start + siz - 1; (c = *src) && dst < end; ) {  in strnvis()
186 				if (dst + 1 >= end) {  in strnvis()
190 				*dst++ = '\\';  in strnvis()
193 			*dst++ = c;  in strnvis()
197 			if (dst + i <= end) {  in strnvis()
198 				memcpy(dst, tbuf, i);  in strnvis()
199 				dst += i;  in strnvis()
207 		*dst = '\0';  in strnvis()
208 	if (dst + i > end) {  in strnvis()
211 			dst += vis(tbuf, c, flag, *++src) - tbuf;  in strnvis()
213 	return (dst - start);  in strnvis()
236 strvisx(char *dst, const char *src, size_t len, int flag)  in strvisx()  argument
241 	for (start = dst; len > 1; len--) {  in strvisx()
243 		dst = vis(dst, c, flag, *++src);  in strvisx()
246 		dst = vis(dst, *src, flag, '\0');  in strvisx()
247 	*dst = '\0';  in strvisx()
248 	return (dst - start);  in strvisx()