diff --git a/src/diff.c b/src/diff.c index d7433349a4..6e5097e4a8 100644 --- a/src/diff.c +++ b/src/diff.c @@ -1826,7 +1826,22 @@ diff_read( else { // second overlap of new block with existing block - dp->df_count[idx_new] += hunk->count_new; + + // if this hunk has different orig/new counts, adjust + // the diff block size first. When we handled the first hunk we + // would have expanded it to fit, without knowing that this + // hunk exists + int orig_size_in_dp = MIN(hunk->count_orig, + dp->df_lnum[idx_orig] + + dp->df_count[idx_orig] - hunk->lnum_orig); + int size_diff = hunk->count_new - orig_size_in_dp; + dp->df_count[idx_new] += size_diff; + + // grow existing block to include the overlap completely + off = hunk->lnum_new + hunk->count_new + - (dp->df_lnum[idx_new] + dp->df_count[idx_new]); + if (off > 0) + dp->df_count[idx_new] += off; if ((dp->df_lnum[idx_new] + dp->df_count[idx_new] - 1) > curtab->tp_diffbuf[idx_new]->b_ml.ml_line_count) dp->df_count[idx_new] = curtab->tp_diffbuf[idx_new]->b_ml.ml_line_count @@ -1839,8 +1854,16 @@ diff_read( - (dpl->df_lnum[idx_orig] + dpl->df_count[idx_orig]); if (off < 0) { - // new change ends in existing block, adjust the end - dp->df_count[idx_new] += -off; + // new change ends in existing block, adjust the end. We only + // need to do this once per block or we will over-adjust. + if (notset || dp != dpl) + { + // adjusting by 'off' here is only correct if + // there is not another hunk in this block. we + // adjust for this when we encounter a second + // overlap later. + dp->df_count[idx_new] += -off; + } if ((dp->df_lnum[idx_new] + dp->df_count[idx_new] - 1) > curtab->tp_diffbuf[idx_new]->b_ml.ml_line_count) dp->df_count[idx_new] = curtab->tp_diffbuf[idx_new]->b_ml.ml_line_count diff --git a/src/testdir/dumps/Test_diff_overlapped_3.40.dump b/src/testdir/dumps/Test_diff_overlapped_3.40.dump new file mode 100644 index 0000000000..4307cfb1c7 --- /dev/null +++ b/src/testdir/dumps/Test_diff_overlapped_3.40.dump @@ -0,0 +1,20 @@ +| +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1| @19||+1&&| +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1| @18||+1&&| +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1| @18 +| +0#0000e05#a8a8a8255@1|a+2#0000000#ff404010| +0&#ffd7ff255@21||+1&#ffffff0| 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@22||+1#0000000&|~+0#4040ff13&| @22 +|~| @23||+1#0000000&|~+0#4040ff13&| @22||+1#0000000&|~+0#4040ff13&| @22 +|~| @23||+1#0000000&|~+0#4040ff13&| @22||+1#0000000&|~+0#4040ff13&| @22 +|~| @23||+1#0000000&|~+0#4040ff13&| @22||+1#0000000&|~+0#4040ff13&| @22 +|~| @23||+1#0000000&|~+0#4040ff13&| @22||+1#0000000&|~+0#4040ff13&| @22 +|~| @23||+1#0000000&|~+0#4040ff13&| @22||+1#0000000&|~+0#4040ff13&| @22 +|~| @23||+1#0000000&|~+0#4040ff13&| @22||+1#0000000&|~+0#4040ff13&| @22 +|X+3#0000000&|d|i|f|i|l|e|1| @4|1|,|1| @5|A|l@1| |X+1&&|d|i|f|i|l|e|2| @3|1|,|1| @5|A|l@1| |X|d|i|f|i|l|e|3| @3|1|,|1| @5|A|l@1 +|:+0&&> @73 diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim index 36d3d9ba65..b62266bb8a 100644 --- a/src/testdir/test_diffmode.vim +++ b/src/testdir/test_diffmode.vim @@ -2296,6 +2296,30 @@ func Test_diff_overlapped_diff_blocks_will_be_merged() call WriteDiffFiles3(buf, ["a", "b", "c"], ["d", "e"], ["b"]) call VerifyBoth(buf, "Test_diff_overlapped_3.39", "") + " File 3 overlaps twice, 2nd overlap completely within the existing block. + call WriteDiffFiles3(buf, ["foo", "a", "b", "c", "bar"], ["foo", "w", "x", "y", "z", "bar"], ["foo", "1", "a", "b", "2", "bar"]) + call VerifyBoth(buf, "Test_diff_overlapped_3.40", "") + + " File 3 overlaps twice, 2nd overlap extends beyond existing block on new + " side. Make sure we don't over-extend the range and hit 'bar'. + call WriteDiffFiles3(buf, ["foo", "a", "b", "c", "d", "bar"], ["foo", "w", "x", "y", "z", "u", "bar"], ["foo", "1", "a", "b", "2", "d", "bar"]) + call VerifyBoth(buf, "Test_diff_overlapped_3.41", "") + + " Chained overlaps. File 3's 2nd overlap spans two diff blocks and is longer + " than the 2nd one. + call WriteDiffFiles3(buf, ["foo", "a", "b", "c", "d", "e", "f", "bar"], ["foo", "w", "x", "y", "z", "e", "u", "bar"], ["foo", "1", "b", "2", "3", "d", "4", "f", "bar"]) + call VerifyBoth(buf, "Test_diff_overlapped_3.42", "") + + " File 3 has 2 overlaps. An add and a delete. First overlap's expansion hits + " the 2nd one. Make sure we adjust the diff block to have fewer lines. + call WriteDiffFiles3(buf, ["foo", "a", "b", "bar"], ["foo", "x", "y", "bar"], ["foo", "1", "a", "bar"]) + call VerifyBoth(buf, "Test_diff_overlapped_3.43", "") + + " File 3 has 2 overlaps. An add and another add. First overlap's expansion hits + " the 2nd one. Make sure we adjust the diff block to have more lines. + call WriteDiffFiles3(buf, ["foo", "a", "b", "c", "d", "bar"], ["foo", "w", "x", "y", "z", "u", "bar"], ["foo", "1", "a", "b", "3", "4", "d", "bar"]) + call VerifyBoth(buf, "Test_diff_overlapped_3.44", "") + call StopVimInTerminal(buf) endfunc diff --git a/src/version.c b/src/version.c index 6fd80d6b12..48d11c4b39 100644 --- a/src/version.c +++ b/src/version.c @@ -704,6 +704,8 @@ static char *(features[]) = static int included_patches[] = { /* Add new patch number below this line */ +/**/ + 1165, /**/ 1164, /**/