57 vis(char *dst, int c, int flag, int nextc)  in vis()  argument
60 		*dst++ = c;  in vis()
62 			*dst++ = '\\';  in vis()
63 		*dst = '\0';  in vis()
64 		return (dst);  in vis()
70 			*dst++ = '\\';  in vis()
71 			*dst++ = 'n';  in vis()
74 			*dst++ = '\\';  in vis()
75 			*dst++ = 'r';  in vis()
78 			*dst++ = '\\';  in vis()
79 			*dst++ = 'b';  in vis()
82 			*dst++ = '\\';  in vis()
83 			*dst++ = 'a';  in vis()
86 			*dst++ = '\\';  in vis()
87 			*dst++ = 'v';  in vis()
90 			*dst++ = '\\';  in vis()
91 			*dst++ = 't';  in vis()
94 			*dst++ = '\\';  in vis()
95 			*dst++ = 'f';  in vis()
98 			*dst++ = '\\';  in vis()
99 			*dst++ = 's';  in vis()
102 			*dst++ = '\\';  in vis()
103 			*dst++ = '0';  in vis()
105 				*dst++ = '0';  in vis()
106 				*dst++ = '0';  in vis()
113 		*dst++ = '\\';  in vis()
114 		*dst++ = ((u_char)c >> 6 & 07) + '0';  in vis()
115 		*dst++ = ((u_char)c >> 3 & 07) + '0';  in vis()
116 		*dst++ = ((u_char)c & 07) + '0';  in vis()
120 		*dst++ = '\\';  in vis()
123 		*dst++ = 'M';  in vis()
126 		*dst++ = '^';  in vis()
128 			*dst++ = '?';  in vis()
130 			*dst++ = c + '@';  in vis()
132 		*dst++ = '-';  in vis()
133 		*dst++ = c;  in vis()
136 	*dst = '\0';  in vis()
137 	return (dst);  in vis()
154 strvis(char *dst, const char *src, int flag)  in strvis()  argument
159 	for (start = dst; (c = *src);)  in strvis()
160 		dst = vis(dst, c, flag, *++src);  in strvis()
161 	*dst = '\0';  in strvis()
162 	return (dst - start);  in strvis()
166 strnvis(char *dst, const char *src, size_t siz, int flag)  in strnvis()  argument
173 	for (start = dst, end = start + siz - 1; (c = *src) && dst < end; ) {  in strnvis()
176 			*dst++ = c;  in strnvis()
179 				if (dst < end)  in strnvis()
180 					*dst++ = '\\';  in strnvis()
182 					dst--;  in strnvis()
190 			if (dst + i <= end) {  in strnvis()
191 				memcpy(dst, tbuf, i);  in strnvis()
192 				dst += i;  in strnvis()
200 		*dst = '\0';  in strnvis()
201 	if (dst + i > end) {  in strnvis()
204 			dst += vis(tbuf, c, flag, *++src) - tbuf;  in strnvis()
206 	return (dst - start);  in strnvis()
210 strvisx(char *dst, const char *src, size_t len, int flag)  in strvisx()  argument
215 	for (start = dst; len > 1; len--) {  in strvisx()
217 		dst = vis(dst, c, flag, *++src);  in strvisx()
220 		dst = vis(dst, *src, flag, '\0');  in strvisx()
221 	*dst = '\0';  in strvisx()
222 	return (dst - start);  in strvisx()