diff options
Diffstat (limited to 'posix/PTESTS')
| -rw-r--r-- | posix/PTESTS | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/posix/PTESTS b/posix/PTESTS index 8732a2ccfe..02b357cf2e 100644 --- a/posix/PTESTS +++ b/posix/PTESTS @@ -226,11 +226,18 @@ 1¦20¦a\(.*b\)c¦axcaxbbbcsxbbbbbbbbc¦ # GA135 1¦7¦\(a\(b\(c\(d\(e\)\)\)\)\)\4¦abcdededede¦ -1¦2¦a\(b\)*c\1¦acb¦ +#W POSIX does not really specify whether a\(b\)*c\1 matches acb. +#W back references are supposed to expand to the last match, but what +#W if there never was a match as in this case? +-1¦-1¦a\(b\)*c\1¦acb¦ 1¦11¦\(a\(b\(c\(d\(e\(f\(g\)h\(i\(j\)\)\)\)\)\)\)\)\9¦abcdefghijjk¦ # GA136 -1¦2¦a\(b\)*c\1¦acb¦ -4¦7¦a\(b\(c\(d\(f\)*\)\)\)\4¦xYzabcdePQRST¦ +#W These two tests have the same problem as the test in GA135. No match +#W of a subexpression, why should the back reference be usable? +#W 1 2 a\(b\)*c\1 acb +#W 4 7 a\(b\(c\(d\(f\)*\)\)\)\4¦xYzabcdePQRST +-1¦-1¦a\(b\)*c\1¦acb¦ +-1¦-1¦a\(b\(c\(d\(f\)*\)\)\)\4¦xYzabcdePQRST¦ # GA137 -2¦-2¦\(a\(b\)\)\3¦foo¦ -2¦-2¦\(a\(b\)\)\(a\(b\)\)\5¦foo¦ |