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diff --color-moved: rewind when discarding pmb

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Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Phillip Wood 2021-12-09 10:29:58 +00:00 committed by Junio C Hamano
parent 7dfe427107
commit 0990658bf8
2 changed files with 69 additions and 5 deletions
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28
diff.c
View File

@ -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;

46
t/t4015-diff-whitespace.sh
View File

@ -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 &&
<BOLD>diff --git a/file b/file<RESET>
<BOLD>--- a/file<RESET>
<BOLD>+++ b/file<RESET>
<CYAN>@@ -1,13 +1,8 @@<RESET>
<GREEN>+<RESET><GREEN>one<RESET>
<GREEN>+<RESET><GREEN>two<RESET>
A<RESET>
B<RESET>
C<RESET>
<RED>-one<RESET>
<BOLD;MAGENTA>-two<RESET>
<BOLD;MAGENTA>-three<RESET>
<BOLD;MAGENTA>-four<RESET>
<BOLD;MAGENTA>-five<RESET>
<BOLD;MAGENTA>-six<RESET>
<BOLD;MAGENTA>-seven<RESET>
D<RESET>
E<RESET>
F<RESET>
<CYAN>@@ -15,3 +10,9 @@<RESET> <RESET>G<RESET>
H<RESET>
I<RESET>
J<RESET>
<BOLD;CYAN>+<RESET><BOLD;CYAN>two<RESET>
<BOLD;CYAN>+<RESET><BOLD;CYAN>three<RESET>
<BOLD;CYAN>+<RESET><BOLD;CYAN>four<RESET>
<BOLD;CYAN>+<RESET><BOLD;CYAN>five<RESET>
<BOLD;CYAN>+<RESET><BOLD;CYAN>six<RESET>
<BOLD;CYAN>+<RESET><BOLD;CYAN>seven<RESET>
EOF
test_cmp expected actual
'
test_expect_success 'move detection with submodules' '
test_create_repo bananas &&
echo ripe >bananas/recipe &&