diff --git a/diff.c b/diff.c index 09af94e018..1e1b5127d1 100644 --- a/diff.c +++ b/diff.c @@ -1205,7 +1205,15 @@ static void mark_color_as_moved(struct diff_options *o, if (!match) { int i; - adjust_last_block(o, n, block_length); + if (!adjust_last_block(o, n, block_length) && + block_length > 1) { + /* + * Rewind in case there is another match + * starting at the second line of the block + */ + match = NULL; + n -= block_length; + } for(i = 0; i < pmb_nr; i++) moved_block_clear(&pmb[i]); pmb_nr = 0; @@ -1230,10 +1238,20 @@ static void mark_color_as_moved(struct diff_options *o, pmb_nr = shrink_potential_moved_blocks(pmb, pmb_nr); if (pmb_nr == 0) { - fill_potential_moved_blocks( - o, hm, match, l, &pmb, &pmb_alloc, &pmb_nr); - if (adjust_last_block(o, n, block_length) && - pmb_nr && last_symbol != l->s) + int contiguous = adjust_last_block(o, n, block_length); + + if (!contiguous && block_length > 1) + /* + * Rewind in case there is another match + * starting at the second line of the block + */ + n -= block_length; + else + fill_potential_moved_blocks(o, hm, match, l, + &pmb, &pmb_alloc, + &pmb_nr); + + if (contiguous && pmb_nr && last_symbol != l->s) flipped_block = (flipped_block + 1) % 2; else flipped_block = 0; diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh index 2c13b62d3c..308dc13659 100755 --- a/t/t4015-diff-whitespace.sh +++ b/t/t4015-diff-whitespace.sh @@ -1833,6 +1833,52 @@ test_expect_success '--color-moved treats adjacent blocks as separate for MIN_AL test_cmp expected actual ' +test_expect_success '--color-moved rewinds for MIN_ALNUM_COUNT' ' + git reset --hard && + test_write_lines >file \ + A B C one two three four five six seven D E F G H I J && + git add file && + test_write_lines >file \ + one two A B C D E F G H I J two three four five six seven && + git diff --color-moved=zebra -- file && + + git diff --color-moved=zebra --color -- file >actual.raw && + grep -v "index" actual.raw | test_decode_color >actual && + cat >expected <<-\EOF && + diff --git a/file b/file + --- a/file + +++ b/file + @@ -1,13 +1,8 @@ + +one + +two + A + B + C + -one + -two + -three + -four + -five + -six + -seven + D + E + F + @@ -15,3 +10,9 @@ G + H + I + J + +two + +three + +four + +five + +six + +seven + EOF + + test_cmp expected actual +' + test_expect_success 'move detection with submodules' ' test_create_repo bananas && echo ripe >bananas/recipe &&