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http://bugs.gentoo.org/337329
do not interpret \\1 as an octal sequence. require it to start with \\0.
--- a/src/bltin/printf.c
+++ b/src/bltin/printf.c
@@ -247,18 +247,10 @@ conv_escape_str(char *str)
* They start with a \0, and are followed by 0, 1, 2,
* or 3 octal digits.
*/
- if (ch == '0') {
- unsigned char i;
- i = 3;
- ch = 0;
- do {
- unsigned k = octtobin(*str);
- if (k > 7)
- break;
- str++;
- ch <<= 3;
- ch += k;
- } while (--i);
+ if (ch >= '1' && ch <= '9') {
+ /* Filter \1...\9; let \0 fall to conv_escape(). */
+ ch = '\\';
+ --str;
continue;
}
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