{ 1, 20, "a\\(.*b\\)c", "axcaxbbbcsxbbbbbbbbc", },
{ 0, 0, "GA135", NULL, },
{ 1, 7, "\\(a\\(b\\(c\\(d\\(e\\)\\)\\)\\)\\)\\4", "abcdededede", },
- { 1, 2, "a\\(b\\)*c\\1", "acb", },
+ { 0, 0, NULL, "POSIX does not really specify whether a\\(b\\)*c\\1 matches acb." },
+ { 0, 0, NULL, "back references are supposed to expand to the last match, but what" },
+ { 0, 0, NULL, "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", },
{ 0, 0, "GA136", NULL, },
- { 1, 2, "a\\(b\\)*c\\1", "acb", },
- { 4, 7, "a\\(b\\(c\\(d\\(f\\)*\\)\\)\\)\\4", "xYzabcdePQRST", },
+ { 0, 0, NULL, "These two tests have the same problem as the test in GA135. No match" },
+ { 0, 0, NULL, "of a subexpression, why should the back reference be usable?" },
+ { 0, 0, NULL, "1 2 a\\(b\\)*c\\1 acb" },
+ { 0, 0, NULL, "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", },
{ 0, 0, "GA137", NULL, },
{ -2, -2, "\\(a\\(b\\)\\)\\3", "foo", },
{ -2, -2, "\\(a\\(b\\)\\)\\(a\\(b\\)\\)\\5", "foo", },
{ 1, 63, "a\\{1,63\\}", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", },
{ 0, 0, "2.8.3.4 BRE Precedence", NULL, },
{ 0, 0, "GA143", NULL, },
- { 2, 20, "\\^\\[[[.].]]\\\\(\\\\1\\\\)\\\\*\\\\{1,2\\\\}\\$", "a^[]\\(1\\)\\*\\{1,2\\}$b", },
+ { 0, 0, NULL, "There are numerous bugs in the original version." },
+ { 2, 19, "\\^\\[[[.].]]\\\\(\\\\1\\\\)\\*\\\\{1,2\\\\}\\$", "a^[]\\(\\1\\)*\\{1,2\\}$b", },
{ 1, 6, "[[=*=]][[=\\=]][[=]=]][[===]][[...]][[:punct:]]", "*\\]=.;", },
{ 1, 6, "[$\\(*\\)^]*", "$\\()*^", },
{ 1, 1, "[\\1]", "1", },