kernel
/
git
mirror of https://git.kernel.org/pub/scm/git/git.git
1
0
Fork 0
Code Releases Activity
Browse Source

add -p: fix editing of intent-to-add paths 

A popular way of partially staging a new file is to run `git add -N
<path>` and then use the hunk editing of `git add -p` to select the
part of the file that the user wishes to stage. Since
85953a3187 ("diff-files --raw: show correct post-image of
intent-to-add files", 2020-07-01) this has stopped working as
intent-to-add paths are now show as new files rather than changes to
an empty blob and `git apply` refused to apply a creation patch for a
path that was marked as intent-to-add. 7cfde3fa0f ("apply: allow "new
file" patches on i-t-a entries", 2020-08-06) fixed the problem with
apply but it still wasn't possible to edit the added hunk properly.

2c8bd8471a ("checkout -p: handle new files correctly", 2020-05-27)
had previously changed `add -p` to handle new files but it did not
implement patch editing correctly. The perl version simply forbade
editing and the C version opened the editor with the full diff rather
that just the hunk which meant that the user had to edit the hunk
header manually to get it to work.

The root cause of the problem is that added files store the diff header
with the hunk data rather than separating the two as we do for other
changes. Changing added files to store the diff header separately
fixes the editing problem at the expense of having to special case
empty additions as they no longer have any hunks associated with them,
only the diff header.

The changes move some existing code into a conditional changing the
indentation, they are best viewed with
--color-moved-ws=allow-indentation-change (or --ignore-space-change
works well to get an overview of the changes)

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Reported-by: Thomas Sullivan <tom@msbit.com.au>
Reported-by: Yuchen Ying <ych@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Phillip Wood 4 years ago committed by Junio C Hamano
parent
3a238e539b
commit
75a009dc29
3 changed files with 173 additions and 94 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 140
      add-patch.c
  2. 89
      git-add--interactive.perl
  3. 38
      t/t3701-add-interactive.sh

140
add-patch.c
Unescape View File

@ -451,7 +451,7 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps) @@ -451,7 +451,7 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps)
pend = p + plain->len;
while (p != pend) {
char *eol = memchr(p, '\n', pend - p);
const char *deleted = NULL, *added = NULL, *mode_change = NULL;
const char *deleted = NULL, *mode_change = NULL;

if (!eol)
eol = pend;
@ -468,12 +468,11 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps) @@ -468,12 +468,11 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps)
} else if (p == plain->buf)
BUG("diff starts with unexpected line:\n"
"%.*s\n", (int)(eol - p), p);
else if (file_diff->deleted || file_diff->added)
else if (file_diff->deleted)
; /* keep the rest of the file in a single "hunk" */
else if (starts_with(p, "@@ ") ||
(hunk == &file_diff->head &&
(skip_prefix(p, "deleted file", &deleted) ||
skip_prefix(p, "new file", &added)))) {
(skip_prefix(p, "deleted file", &deleted)))) {
if (marker == '-' || marker == '+')
/*
* Should not happen; previous hunk did not end
@ -491,8 +490,6 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps) @@ -491,8 +490,6 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps)

if (deleted)
file_diff->deleted = 1;
else if (added)
file_diff->added = 1;
else if (parse_hunk_header(s, hunk) < 0)
return -1;

@ -501,6 +498,9 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps) @@ -501,6 +498,9 @@ static int parse_diff(struct add_p_state *s, const struct pathspec *ps)
* split
*/
marker = *p;
} else if (hunk == &file_diff->head &&
starts_with(p, "new file")) {
file_diff->added = 1;
} else if (hunk == &file_diff->head &&
skip_prefix(p, "old mode ", &mode_change) &&
is_octal(mode_change, eol - mode_change)) {
@ -1362,7 +1362,8 @@ static int patch_update_file(struct add_p_state *s, @@ -1362,7 +1362,8 @@ static int patch_update_file(struct add_p_state *s,
ALLOW_EDIT = 1 << 6
} permitted = 0;

if (!file_diff->hunk_nr)
/* Empty added files have no hunks */
if (!file_diff->hunk_nr && !file_diff->added)
return 0;

strbuf_reset(&s->buf);
@ -1371,21 +1372,25 @@ static int patch_update_file(struct add_p_state *s, @@ -1371,21 +1372,25 @@ static int patch_update_file(struct add_p_state *s,
for (;;) {
if (hunk_index >= file_diff->hunk_nr)
hunk_index = 0;
hunk = file_diff->hunk + hunk_index;

hunk = file_diff->hunk_nr
? file_diff->hunk + hunk_index
: &file_diff->head;
undecided_previous = -1;
for (i = hunk_index - 1; i >= 0; i--)
if (file_diff->hunk[i].use == UNDECIDED_HUNK) {
undecided_previous = i;
break;
}

undecided_next = -1;
for (i = hunk_index + 1; i < file_diff->hunk_nr; i++)
if (file_diff->hunk[i].use == UNDECIDED_HUNK) {
undecided_next = i;
break;
}

if (file_diff->hunk_nr) {
for (i = hunk_index - 1; i >= 0; i--)
if (file_diff->hunk[i].use == UNDECIDED_HUNK) {
undecided_previous = i;
break;
}

for (i = hunk_index + 1; i < file_diff->hunk_nr; i++)
if (file_diff->hunk[i].use == UNDECIDED_HUNK) {
undecided_next = i;
break;
}
}

/* Everything decided? */
if (undecided_previous < 0 && undecided_next < 0 &&
@ -1393,38 +1398,40 @@ static int patch_update_file(struct add_p_state *s, @@ -1393,38 +1398,40 @@ static int patch_update_file(struct add_p_state *s,
break;

strbuf_reset(&s->buf);
render_hunk(s, hunk, 0, colored, &s->buf);
fputs(s->buf.buf, stdout);
if (file_diff->hunk_nr) {
render_hunk(s, hunk, 0, colored, &s->buf);
fputs(s->buf.buf, stdout);

strbuf_reset(&s->buf);
if (undecided_previous >= 0) {
permitted |= ALLOW_GOTO_PREVIOUS_UNDECIDED_HUNK;
strbuf_addstr(&s->buf, ",k");
}
if (hunk_index) {
permitted |= ALLOW_GOTO_PREVIOUS_HUNK;
strbuf_addstr(&s->buf, ",K");
}
if (undecided_next >= 0) {
permitted |= ALLOW_GOTO_NEXT_UNDECIDED_HUNK;
strbuf_addstr(&s->buf, ",j");
}
if (hunk_index + 1 < file_diff->hunk_nr) {
permitted |= ALLOW_GOTO_NEXT_HUNK;
strbuf_addstr(&s->buf, ",J");
}
if (file_diff->hunk_nr > 1) {
permitted |= ALLOW_SEARCH_AND_GOTO;
strbuf_addstr(&s->buf, ",g,/");
}
if (hunk->splittable_into > 1) {
permitted |= ALLOW_SPLIT;
strbuf_addstr(&s->buf, ",s");
}
if (hunk_index + 1 > file_diff->mode_change &&
!file_diff->deleted) {
permitted |= ALLOW_EDIT;
strbuf_addstr(&s->buf, ",e");
strbuf_reset(&s->buf);
if (undecided_previous >= 0) {
permitted |= ALLOW_GOTO_PREVIOUS_UNDECIDED_HUNK;
strbuf_addstr(&s->buf, ",k");
}
if (hunk_index) {
permitted |= ALLOW_GOTO_PREVIOUS_HUNK;
strbuf_addstr(&s->buf, ",K");
}
if (undecided_next >= 0) {
permitted |= ALLOW_GOTO_NEXT_UNDECIDED_HUNK;
strbuf_addstr(&s->buf, ",j");
}
if (hunk_index + 1 < file_diff->hunk_nr) {
permitted |= ALLOW_GOTO_NEXT_HUNK;
strbuf_addstr(&s->buf, ",J");
}
if (file_diff->hunk_nr > 1) {
permitted |= ALLOW_SEARCH_AND_GOTO;
strbuf_addstr(&s->buf, ",g,/");
}
if (hunk->splittable_into > 1) {
permitted |= ALLOW_SPLIT;
strbuf_addstr(&s->buf, ",s");
}
if (hunk_index + 1 > file_diff->mode_change &&
!file_diff->deleted) {
permitted |= ALLOW_EDIT;
strbuf_addstr(&s->buf, ",e");
}
}
if (file_diff->deleted)
prompt_mode_type = PROMPT_DELETION;
@ -1438,7 +1445,9 @@ static int patch_update_file(struct add_p_state *s, @@ -1438,7 +1445,9 @@ static int patch_update_file(struct add_p_state *s,
color_fprintf(stdout, s->s.prompt_color,
"(%"PRIuMAX"/%"PRIuMAX") ",
(uintmax_t)hunk_index + 1,
(uintmax_t)file_diff->hunk_nr);
(uintmax_t)(file_diff->hunk_nr
? file_diff->hunk_nr
: 1));
color_fprintf(stdout, s->s.prompt_color,
_(s->mode->prompt_mode[prompt_mode_type]),
s->buf.buf);
@ -1458,16 +1467,24 @@ soft_increment: @@ -1458,16 +1467,24 @@ soft_increment:
hunk->use = SKIP_HUNK;
goto soft_increment;
} else if (ch == 'a') {
for (; hunk_index < file_diff->hunk_nr; hunk_index++) {
hunk = file_diff->hunk + hunk_index;
if (hunk->use == UNDECIDED_HUNK)
hunk->use = USE_HUNK;
if (file_diff->hunk_nr) {
for (; hunk_index < file_diff->hunk_nr; hunk_index++) {
hunk = file_diff->hunk + hunk_index;
if (hunk->use == UNDECIDED_HUNK)
hunk->use = USE_HUNK;
}
} else if (hunk->use == UNDECIDED_HUNK) {
hunk->use = USE_HUNK;
}
} else if (ch == 'd' || ch == 'q') {
for (; hunk_index < file_diff->hunk_nr; hunk_index++) {
hunk = file_diff->hunk + hunk_index;
if (hunk->use == UNDECIDED_HUNK)
hunk->use = SKIP_HUNK;
if (file_diff->hunk_nr) {
for (; hunk_index < file_diff->hunk_nr; hunk_index++) {
hunk = file_diff->hunk + hunk_index;
if (hunk->use == UNDECIDED_HUNK)
hunk->use = SKIP_HUNK;
}
} else if (hunk->use == UNDECIDED_HUNK) {
hunk->use = SKIP_HUNK;
}
if (ch == 'q') {
quit = 1;
@ -1625,7 +1642,8 @@ soft_increment: @@ -1625,7 +1642,8 @@ soft_increment:
if (file_diff->hunk[i].use == USE_HUNK)
break;

if (i < file_diff->hunk_nr) {
if (i < file_diff->hunk_nr ||
(!file_diff->hunk_nr && file_diff->head.use == USE_HUNK)) {
/* At least one hunk selected: apply */
strbuf_reset(&s->buf);
reassemble_patch(s, file_diff, 0, &s->buf);

89
git-add--interactive.perl
Unescape View File

@ -754,13 +754,16 @@ sub parse_diff_header { @@ -754,13 +754,16 @@ sub parse_diff_header {
my $head = { TEXT => [], DISPLAY => [], TYPE => 'header' };
my $mode = { TEXT => [], DISPLAY => [], TYPE => 'mode' };
my $deletion = { TEXT => [], DISPLAY => [], TYPE => 'deletion' };
my $addition = { TEXT => [], DISPLAY => [], TYPE => 'addition' };
my $addition;

for (my $i = 0; $i < @{$src->{TEXT}}; $i++) {
if ($src->{TEXT}->[$i] =~ /^new file/) {
$addition = 1;
$head->{TYPE} = 'addition';
}
my $dest =
$src->{TEXT}->[$i] =~ /^(old|new) mode (\d+)$/ ? $mode :
$src->{TEXT}->[$i] =~ /^deleted file/ ? $deletion :
$src->{TEXT}->[$i] =~ /^new file/ ? $addition :
$head;
push @{$dest->{TEXT}}, $src->{TEXT}->[$i];
push @{$dest->{DISPLAY}}, $src->{DISPLAY}->[$i];
@ -1501,12 +1504,6 @@ sub patch_update_file { @@ -1501,12 +1504,6 @@ sub patch_update_file {
push @{$deletion->{DISPLAY}}, @{$hunk->{DISPLAY}};
}
@hunk = ($deletion);
} elsif (@{$addition->{TEXT}}) {
foreach my $hunk (@hunk) {
push @{$addition->{TEXT}}, @{$hunk->{TEXT}};
push @{$addition->{DISPLAY}}, @{$hunk->{DISPLAY}};
}
@hunk = ($addition);
}

$num = scalar @hunk;
@ -1516,6 +1513,7 @@ sub patch_update_file { @@ -1516,6 +1513,7 @@ sub patch_update_file {
my ($prev, $next, $other, $undecided, $i);
$other = '';

last if ($ix and !$num);
if ($num <= $ix) {
$ix = 0;
}
@ -1548,35 +1546,51 @@ sub patch_update_file { @@ -1548,35 +1546,51 @@ sub patch_update_file {
last;
}
}
last if (!$undecided);
last if (!$undecided && ($num || !$addition));

if ($hunk[$ix]{TYPE} eq 'hunk' &&
hunk_splittable($hunk[$ix]{TEXT})) {
$other .= ',s';
}
if ($hunk[$ix]{TYPE} eq 'hunk') {
$other .= ',e';
}
for (@{$hunk[$ix]{DISPLAY}}) {
print;
if ($num) {
if ($hunk[$ix]{TYPE} eq 'hunk' &&
hunk_splittable($hunk[$ix]{TEXT})) {
$other .= ',s';
}
if ($hunk[$ix]{TYPE} eq 'hunk') {
$other .= ',e';
}
for (@{$hunk[$ix]{DISPLAY}}) {
print;
}
}
print colored $prompt_color, "(", ($ix+1), "/$num) ",
sprintf(__($patch_update_prompt_modes{$patch_mode}{$hunk[$ix]{TYPE}}), $other);
my $type = $num ? $hunk[$ix]{TYPE} : $head->{TYPE};
print colored $prompt_color, "(", ($ix+1), "/", ($num ? $num : 1), ") ",
sprintf(__($patch_update_prompt_modes{$patch_mode}{$type}), $other);

my $line = prompt_single_character;
last unless defined $line;
if ($line) {
if ($line =~ /^y/i) {
$hunk[$ix]{USE} = 1;
if ($num) {
$hunk[$ix]{USE} = 1;
} else {
$head->{USE} = 1;
}
}
elsif ($line =~ /^n/i) {
$hunk[$ix]{USE} = 0;
if ($num) {
$hunk[$ix]{USE} = 0;
} else {
$head->{USE} = 0;
}
}
elsif ($line =~ /^a/i) {
while ($ix < $num) {
if (!defined $hunk[$ix]{USE}) {
$hunk[$ix]{USE} = 1;
if ($num) {
while ($ix < $num) {
if (!defined $hunk[$ix]{USE}) {
$hunk[$ix]{USE} = 1;
}
$ix++;
}
} else {
$head->{USE} = 1;
$ix++;
}
next;
@ -1613,19 +1627,28 @@ sub patch_update_file { @@ -1613,19 +1627,28 @@ sub patch_update_file {
next;
}
elsif ($line =~ /^d/i) {
while ($ix < $num) {
if (!defined $hunk[$ix]{USE}) {
$hunk[$ix]{USE} = 0;
if ($num) {
while ($ix < $num) {
if (!defined $hunk[$ix]{USE}) {
$hunk[$ix]{USE} = 0;
}
$ix++;
}
} else {
$head->{USE} = 0;
$ix++;
}
next;
}
elsif ($line =~ /^q/i) {
for ($i = 0; $i < $num; $i++) {
if (!defined $hunk[$i]{USE}) {
$hunk[$i]{USE} = 0;
if ($num) {
for ($i = 0; $i < $num; $i++) {
if (!defined $hunk[$i]{USE}) {
$hunk[$i]{USE} = 0;
}
}
} elsif (!defined $head->{USE}) {
$head->{USE} = 0;
}
$quit = 1;
last;
@ -1743,7 +1766,7 @@ sub patch_update_file { @@ -1743,7 +1766,7 @@ sub patch_update_file {
}
}

@hunk = coalesce_overlapping_hunks(@hunk);
@hunk = coalesce_overlapping_hunks(@hunk) if ($num);

my $n_lofs = 0;
my @result = ();
@ -1753,7 +1776,7 @@ sub patch_update_file { @@ -1753,7 +1776,7 @@ sub patch_update_file {
}
}

if (@result) {
if (@result or $head->{USE}) {
my @patch = reassemble_patch($head->{TEXT}, @result);
my $apply_routine = $patch_mode_flavour{APPLY};
&$apply_routine(@patch);

38
t/t3701-add-interactive.sh
Unescape View File

@ -814,6 +814,44 @@ test_expect_success 'checkout -p works with pathological context lines' ' @@ -814,6 +814,44 @@ test_expect_success 'checkout -p works with pathological context lines' '
test_cmp expect a
'

# This should be called from a subshell as it sets a temporary editor
setup_new_file() {
write_script new-file-editor.sh <<-\EOF &&
sed /^#/d "$1" >patch &&
sed /^+c/d patch >"$1"
EOF
test_set_editor "$(pwd)/new-file-editor.sh" &&
test_write_lines a b c d e f >new-file &&
test_write_lines a b d e f >new-file-expect &&
test_write_lines "@@ -0,0 +1,6 @@" +a +b +c +d +e +f >patch-expect
}

test_expect_success 'add -N followed by add -p patch editing' '
git reset --hard &&
(
setup_new_file &&
git add -N new-file &&
test_write_lines e n q | git add -p &&
git cat-file blob :new-file >actual &&
test_cmp new-file-expect actual &&
test_cmp patch-expect patch
)
'

test_expect_success 'checkout -p patch editing of added file' '
git reset --hard &&
(
setup_new_file &&
git add new-file &&
git commit -m "add new file" &&
git rm new-file &&
git commit -m "remove new file" &&
test_write_lines e n q | git checkout -p HEAD^ &&
test_cmp new-file-expect new-file &&
test_cmp patch-expect patch
)
'

test_expect_success 'show help from add--helper' '
git reset --hard &&
cat >expect <<-EOF &&

Write Preview
Loading…
Cancel
Save