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- To: vim_dev@googlegroups.com
- Subject: Patch 7.4.351
- Fcc: outbox
- From: Bram Moolenaar <Bram@moolenaar.net>
- Mime-Version: 1.0
- Content-Type: text/plain; charset=UTF-8
- Content-Transfer-Encoding: 8bit
- ------------
-
- Patch 7.4.351
- Problem: sort() is not stable.
- Solution: When the items are identical, compare the pointers.
- Files: src/eval.c, src/testdir/test55.in, src/testdir/test55.ok
-
-
- *** ../vim-7.4.350/src/eval.c 2014-06-25 17:31:04.942737863 +0200
- --- src/eval.c 2014-07-02 18:52:19.102313288 +0200
- ***************
- *** 17334,17339 ****
- --- 17334,17340 ----
- static char_u *item_compare_func;
- static dict_T *item_compare_selfdict;
- static int item_compare_func_err;
- + static int item_compare_keep_zero;
- static void do_sort_uniq __ARGS((typval_T *argvars, typval_T *rettv, int sort));
- #define ITEM_COMPARE_FAIL 999
-
- ***************
- *** 17374,17379 ****
- --- 17375,17386 ----
- n2 = strtod((char *)p2, (char **)&p2);
- res = n1 == n2 ? 0 : n1 > n2 ? 1 : -1;
- }
- +
- + /* When the result would be zero, compare the pointers themselves. Makes
- + * the sort stable. */
- + if (res == 0 && !item_compare_keep_zero)
- + res = s1 > s2 ? 1 : -1;
- +
- vim_free(tofree1);
- vim_free(tofree2);
- return res;
- ***************
- *** 17396,17402 ****
- if (item_compare_func_err)
- return 0;
-
- ! /* copy the values. This is needed to be able to set v_lock to VAR_FIXED
- * in the copy without changing the original list items. */
- copy_tv(&(*(listitem_T **)s1)->li_tv, &argv[0]);
- copy_tv(&(*(listitem_T **)s2)->li_tv, &argv[1]);
- --- 17403,17409 ----
- if (item_compare_func_err)
- return 0;
-
- ! /* Copy the values. This is needed to be able to set v_lock to VAR_FIXED
- * in the copy without changing the original list items. */
- copy_tv(&(*(listitem_T **)s1)->li_tv, &argv[0]);
- copy_tv(&(*(listitem_T **)s2)->li_tv, &argv[1]);
- ***************
- *** 17415,17420 ****
- --- 17422,17433 ----
- if (item_compare_func_err)
- res = ITEM_COMPARE_FAIL; /* return value has wrong type */
- clear_tv(&rettv);
- +
- + /* When the result would be zero, compare the pointers themselves. Makes
- + * the sort stable. */
- + if (res == 0 && !item_compare_keep_zero)
- + res = s1 > s2 ? 1 : -1;
- +
- return res;
- }
-
- ***************
- *** 17509,17514 ****
- --- 17522,17528 ----
- ptrs[i++] = li;
-
- item_compare_func_err = FALSE;
- + item_compare_keep_zero = FALSE;
- /* test the compare function */
- if (item_compare_func != NULL
- && item_compare2((void *)&ptrs[0], (void *)&ptrs[1])
- ***************
- *** 17536,17541 ****
- --- 17550,17556 ----
-
- /* f_uniq(): ptrs will be a stack of items to remove */
- item_compare_func_err = FALSE;
- + item_compare_keep_zero = TRUE;
- item_compare_func_ptr = item_compare_func
- ? item_compare2 : item_compare;
-
- *** ../vim-7.4.350/src/testdir/test55.in 2014-06-26 22:33:47.850693627 +0200
- --- src/testdir/test55.in 2014-07-02 19:00:09.238320492 +0200
- ***************
- *** 332,340 ****
- :$put =string(reverse(sort(l)))
- :$put =string(sort(reverse(sort(l))))
- :$put =string(uniq(sort(l)))
- ! :let l=[7, 9, 18, 12, 22, 10.0e-16, -1, 0xff, 0.22, 'foo']
- :$put =string(sort(copy(l), 'n'))
- ! :let l=[7, 9, 18, 12, 22, 10.0e-16, -1, 0xff, 0, -0, 0.22, 'foo', 'FOOBAR',{}, []]
- :$put =string(sort(copy(l), 1))
- :$put =string(sort(copy(l), 'i'))
- :$put =string(sort(copy(l)))
- --- 332,340 ----
- :$put =string(reverse(sort(l)))
- :$put =string(sort(reverse(sort(l))))
- :$put =string(uniq(sort(l)))
- ! :let l=[7, 9, 'one', 18, 12, 22, 'two', 10.0e-16, -1, 'three', 0xff, 0.22, 'four']
- :$put =string(sort(copy(l), 'n'))
- ! :let l=[7, 9, 18, 12, 22, 10.0e-16, -1, 0xff, 0, -0, 0.22, 'bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', {}, []]
- :$put =string(sort(copy(l), 1))
- :$put =string(sort(copy(l), 'i'))
- :$put =string(sort(copy(l)))
- *** ../vim-7.4.350/src/testdir/test55.ok 2014-06-26 22:33:47.850693627 +0200
- --- src/testdir/test55.ok 2014-07-02 19:00:57.078321225 +0200
- ***************
- *** 101,110 ****
- [[0, 1, 2], [0, 1, 2], 4, 2, 2, 1.5, 'xaaa', 'x8', 'foo6', 'foo', 'foo', 'A11', '-0']
- ['-0', 'A11', 'foo', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 2, 4, [0, 1, 2], [0, 1, 2]]
- ['-0', 'A11', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 4, [0, 1, 2]]
- ! [-1, 'foo', 1.0e-15, 0.22, 7, 9, 12, 18, 22, 255]
- ! ['foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
- ! ['foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
- ! ['FOOBAR', 'foo', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
- ['aa', 'bb']
- ['aa', 'bb']
- ['', 'aa', 'bb', '']
- --- 101,110 ----
- [[0, 1, 2], [0, 1, 2], 4, 2, 2, 1.5, 'xaaa', 'x8', 'foo6', 'foo', 'foo', 'A11', '-0']
- ['-0', 'A11', 'foo', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 2, 4, [0, 1, 2], [0, 1, 2]]
- ['-0', 'A11', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 4, [0, 1, 2]]
- ! [-1, 'one', 'two', 'three', 'four', 1.0e-15, 0.22, 7, 9, 12, 18, 22, 255]
- ! ['bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
- ! ['bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
- ! ['BAR', 'Bar', 'FOO', 'FOOBAR', 'Foo', 'bar', 'foo', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
- ['aa', 'bb']
- ['aa', 'bb']
- ['', 'aa', 'bb', '']
- *** ../vim-7.4.350/src/version.c 2014-07-02 18:27:44.662290695 +0200
- --- src/version.c 2014-07-02 18:46:38.230308065 +0200
- ***************
- *** 736,737 ****
- --- 736,739 ----
- { /* Add new patch number below this line */
- + /**/
- + 351,
- /**/
-
- --
- The early bird gets the worm. If you want something else for
- breakfast, get up later.
-
- /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
- /// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
- \\\ an exciting new programming language -- http://www.Zimbu.org ///
- \\\ help me help AIDS victims -- http://ICCF-Holland.org ///
-