Files
git-mirror/t/t4013-diff-various.sh
Lidong Yan 3ed5d8bd73 diff: stop output garbled message in dry run mode
Earlier, b55e6d36 (diff: ensure consistent diff behavior with
ignore options, 2025-08-08) introduced "dry-run" mode to the
diff machinery so that content-based diff filtering (like
ignoring space changes or those that match -I<regex>) can first
try to produce a patch without emitting any output to see if
under the given diff filtering condition we would get any output
lines, and a new helper function diff_flush_patch_quietly() was
introduced to use the mode to see an individual filepair needs
to be shown.

However, the solution was not complete. When files are deleted,
file modes change, or there are unmerged entries in the index,
dry-run mode still produces output because we overlooked these
conditions, and as a result, dry-run mode was not quiet.

To fix this, return early in emit_diff_symbol_from_struct() if
we are in dry-run mode. This function will be called by all the
emit functions to output the results. Returning early can avoid
diff output when files are deleted or file modes are changed.
Stop print message in dry-run mode if we have unmerged entries
in index. Discard output of external diff tool in dry-run mode.

Signed-off-by: Lidong Yan <yldhome2d2@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2025-10-23 09:06:52 -07:00

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#!/bin/sh
#
# Copyright (c) 2006 Junio C Hamano
#
test_description='Various diff formatting options'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-diff.sh
if ! test_have_prereq PERL_TEST_HELPERS
then
skip_all='skipping diff various tests; Perl not available'
test_done
fi
test_expect_success setup '
GIT_AUTHOR_DATE="2006-06-26 00:00:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:00:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
mkdir dir &&
mkdir dir2 &&
test_write_lines 1 2 3 >file0 &&
test_write_lines A B >dir/sub &&
cat file0 >file2 &&
git add file0 file2 dir/sub &&
git commit -m Initial &&
git branch initial &&
git branch side &&
GIT_AUTHOR_DATE="2006-06-26 00:01:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:01:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
test_write_lines 4 5 6 >>file0 &&
test_write_lines C D >>dir/sub &&
rm -f file2 &&
git update-index --remove file0 file2 dir/sub &&
git commit -m "Second${LF}${LF}This is the second commit." &&
GIT_AUTHOR_DATE="2006-06-26 00:02:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:02:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
test_write_lines A B C >file1 &&
git add file1 &&
test_write_lines E F >>dir/sub &&
git update-index dir/sub &&
git commit -m Third &&
GIT_AUTHOR_DATE="2006-06-26 00:03:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:03:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
git checkout side &&
test_write_lines A B C >>file0 &&
test_write_lines 1 2 >>dir/sub &&
cat dir/sub >file3 &&
git add file3 &&
git update-index file0 dir/sub &&
git commit -m Side &&
GIT_AUTHOR_DATE="2006-06-26 00:04:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:04:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
git checkout main &&
git pull -s ours --no-rebase . side &&
GIT_AUTHOR_DATE="2006-06-26 00:05:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:05:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
test_write_lines A B C >>file0 &&
test_write_lines 1 2 >>dir/sub &&
git update-index file0 dir/sub &&
mkdir dir3 &&
cp dir/sub dir3/sub &&
test-tool chmtime +1 dir3/sub &&
git config log.showroot false &&
git commit --amend &&
GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
git checkout -b rearrange initial &&
test_write_lines B A >dir/sub &&
git add dir/sub &&
git commit -m "Rearranged lines in dir/sub" &&
git checkout main &&
GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
git checkout -b mode initial &&
git update-index --chmod=+x file0 &&
git commit -m "update mode" &&
git checkout -f main &&
GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" &&
GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" &&
export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
git checkout -b note initial &&
git update-index --chmod=+x file2 &&
git commit -m "update mode (file2)" &&
git notes add -m "note" &&
git checkout -f main &&
# Same merge as main, but with parents reversed. Hide it in a
# pseudo-ref to avoid impacting tests with --all.
commit=$(echo reverse |
git commit-tree -p main^2 -p main^1 main^{tree}) &&
git update-ref REVERSE $commit &&
git config diff.renames false &&
git show-branch
'
: <<\EOF
! [initial] Initial
* [main] Merge branch 'side'
! [rearrange] Rearranged lines in dir/sub
! [side] Side
----
+ [rearrange] Rearranged lines in dir/sub
- [main] Merge branch 'side'
* + [side] Side
* [main^] Third
* [main~2] Second
+*++ [initial] Initial
EOF
process_diffs () {
perl -e '
my $oid_length = length($ARGV[0]);
my $x40 = "[0-9a-f]{40}";
my $xab = "[0-9a-f]{4,16}";
my $orx = "[0-9a-f]" x $oid_length;
sub munge_oid {
my ($oid) = @_;
my $x;
return "" unless length $oid;
if ($oid =~ /^(100644|100755|120000)$/) {
return $oid;
}
if ($oid =~ /^0*$/) {
$x = "0";
} else {
$x = "f";
}
if (length($oid) == 40) {
return $x x $oid_length;
} else {
return $x x length($oid);
}
}
while (<STDIN>) {
s/($orx)/munge_oid($1)/ge;
s/From ($x40)( |\))/"From " . munge_oid($1) . $2/ge;
s/commit ($x40)($| \(from )($x40?)/"commit " . munge_oid($1) . $2 . munge_oid($3)/ge;
s/\b($x40)( |\.\.|$)/munge_oid($1) . $2/ge;
s/^($x40)($| )/munge_oid($1) . $2/e;
s/($xab)(\.\.|,| |\.\.\.|$)/munge_oid($1) . $2/ge;
print;
}
' "$ZERO_OID" <"$1"
}
V=$(git version | sed -e 's/^git version //' -e 's/\./\\./g')
while read magic cmd
do
case "$magic" in
'' | '#'*)
continue ;;
:noellipses)
magic=noellipses
label="$magic-$cmd"
;;
:*)
BUG "unknown magic $magic"
;;
*)
cmd="$magic $cmd"
magic=
label="$cmd"
;;
esac
test=$(echo "$label" | sed -e 's|[/ ][/ ]*|_|g')
pfx=$(printf "%04d" $test_count)
expect="$TEST_DIRECTORY/t4013/diff.$test"
actual="$pfx-diff.$test"
case "$cmd" in
whatchanged | whatchanged" "*)
prereq=!WITH_BREAKING_CHANGES
;;
*)
prereq=;;
esac
test_expect_success $prereq "git $cmd # magic is ${magic:-(not used)}" '
{
echo "$ git $cmd"
case "$cmd" in
whatchanged | whatchanged" "*)
run="whatchanged --i-still-use-this"
run="$run ${cmd#whatchanged}" ;;
*)
run=$cmd ;;
esac &&
case "$magic" in
"")
GIT_PRINT_SHA1_ELLIPSIS=yes git $run ;;
noellipses)
git $run ;;
esac |
sed -e "s/^\\(-*\\)$V\\(-*\\)\$/\\1g-i-t--v-e-r-s-i-o-n\2/" \
-e "s/^\\(.*mixed; boundary=\"-*\\)$V\\(-*\\)\"\$/\\1g-i-t--v-e-r-s-i-o-n\2\"/"
echo "\$"
} >"$actual" &&
if test -f "$expect"
then
process_diffs "$actual" >actual &&
process_diffs "$expect" >expect &&
case $cmd in
*format-patch* | *-stat*)
test_cmp expect actual;;
*)
test_cmp expect actual;;
esac &&
rm -f "$actual" actual expect
else
# this is to help developing new tests.
cp "$actual" "$expect"
false
fi
'
done <<\EOF
diff-tree initial
diff-tree -r initial
diff-tree -r --abbrev initial
diff-tree -r --abbrev=4 initial
diff-tree --root initial
diff-tree --root --abbrev initial
:noellipses diff-tree --root --abbrev initial
diff-tree --root -r initial
diff-tree --root -r --abbrev initial
:noellipses diff-tree --root -r --abbrev initial
diff-tree --root -r --abbrev=4 initial
:noellipses diff-tree --root -r --abbrev=4 initial
diff-tree -p initial
diff-tree --root -p initial
diff-tree --root -p --abbrev=10 initial
diff-tree --root -p --full-index initial
diff-tree --root -p --full-index --abbrev=10 initial
diff-tree --patch-with-stat initial
diff-tree --root --patch-with-stat initial
diff-tree --patch-with-raw initial
diff-tree --root --patch-with-raw initial
diff-tree --pretty initial
diff-tree --pretty --root initial
diff-tree --pretty -p initial
diff-tree --pretty --stat initial
diff-tree --pretty --summary initial
diff-tree --pretty --stat --summary initial
diff-tree --pretty --root -p initial
diff-tree --pretty --root --stat initial
# improved by Timo's patch
diff-tree --pretty --root --summary initial
# improved by Timo's patch
diff-tree --pretty --root --summary -r initial
diff-tree --pretty --root --stat --summary initial
diff-tree --pretty --patch-with-stat initial
diff-tree --pretty --root --patch-with-stat initial
diff-tree --pretty --patch-with-raw initial
diff-tree --pretty --root --patch-with-raw initial
diff-tree --pretty=oneline initial
diff-tree --pretty=oneline --root initial
diff-tree --pretty=oneline -p initial
diff-tree --pretty=oneline --root -p initial
diff-tree --pretty=oneline --patch-with-stat initial
# improved by Timo's patch
diff-tree --pretty=oneline --root --patch-with-stat initial
diff-tree --pretty=oneline --patch-with-raw initial
diff-tree --pretty=oneline --root --patch-with-raw initial
diff-tree --pretty side
diff-tree --pretty -p side
diff-tree --pretty --patch-with-stat side
diff-tree initial mode
diff-tree --stat initial mode
diff-tree --summary initial mode
diff-tree main
diff-tree -m main
diff-tree -p main
diff-tree -p -m main
diff-tree -c main
diff-tree -c --abbrev main
:noellipses diff-tree -c --abbrev main
diff-tree --cc main
# stat only should show the diffstat with the first parent
diff-tree -c --stat main
diff-tree --cc --stat main
diff-tree -c --stat --summary main
diff-tree --cc --stat --summary main
# stat summary should show the diffstat and summary with the first parent
diff-tree -c --stat --summary side
diff-tree --cc --stat --summary side
diff-tree --cc --shortstat main
diff-tree --cc --summary REVERSE
# improved by Timo's patch
diff-tree --cc --patch-with-stat main
# improved by Timo's patch
diff-tree --cc --patch-with-stat --summary main
# this is correct
diff-tree --cc --patch-with-stat --summary side
log main
log -p main
log --root main
log --root -p main
log --patch-with-stat main
log --root --patch-with-stat main
log --root --patch-with-stat --summary main
# improved by Timo's patch
log --root -c --patch-with-stat --summary main
# improved by Timo's patch
log --root --cc --patch-with-stat --summary main
log --no-diff-merges -p --first-parent main
log --diff-merges=off -p --first-parent main
log --first-parent --diff-merges=off -p main
log -p --first-parent main
log -p --diff-merges=first-parent main
log --diff-merges=first-parent main
log -m -p --first-parent main
log -m -p main
log --cc -m -p main
log -c -m -p main
log -m --raw main
log -m --stat main
log -SF main
log -S F main
log -SF -p main
log -SF main --max-count=0
log -SF main --max-count=1
log -SF main --max-count=2
log -GF main
log -GF -p main
log -GF -p --pickaxe-all main
log -IA -IB -I1 -I2 -p main
log --decorate --all
log --decorate=full --all
log --decorate --clear-decorations --all
log --decorate=full --clear-decorations --all
rev-list --parents HEAD
rev-list --children HEAD
whatchanged main
:noellipses whatchanged main
whatchanged -p main
whatchanged --root main
:noellipses whatchanged --root main
whatchanged --root -p main
whatchanged --patch-with-stat main
whatchanged --root --patch-with-stat main
whatchanged --root --patch-with-stat --summary main
# improved by Timo's patch
whatchanged --root -c --patch-with-stat --summary main
# improved by Timo's patch
whatchanged --root --cc --patch-with-stat --summary main
whatchanged -SF main
:noellipses whatchanged -SF main
whatchanged -SF -p main
log --patch-with-stat main -- dir/
whatchanged --patch-with-stat main -- dir/
log --patch-with-stat --summary main -- dir/
whatchanged --patch-with-stat --summary main -- dir/
show initial
show --root initial
show side
show main
show -c main
show -m main
show --first-parent main
show --stat side
show --stat --summary side
show --patch-with-stat side
show --patch-with-raw side
:noellipses show --patch-with-raw side
show --patch-with-stat --summary side
format-patch --stdout initial..side
format-patch --stdout initial..main^
format-patch --stdout initial..main
format-patch --stdout --no-numbered initial..main
format-patch --stdout --numbered initial..main
format-patch --attach --stdout initial..side
format-patch --attach --stdout --suffix=.diff initial..side
format-patch --attach --stdout initial..main^
format-patch --attach --stdout initial..main
format-patch --inline --stdout initial..side
format-patch --inline --stdout initial..main^
format-patch --inline --stdout --numbered-files initial..main
format-patch --inline --stdout initial..main
format-patch --inline --stdout --subject-prefix=TESTCASE initial..main
config format.subjectprefix DIFFERENT_PREFIX
format-patch --inline --stdout initial..main^^
format-patch --stdout --cover-letter -n initial..main^
diff --abbrev initial..side
diff -U initial..side
diff -U1 initial..side
diff -r initial..side
diff --stat initial..side
diff -r --stat initial..side
diff initial..side
diff --patch-with-stat initial..side
diff --patch-with-raw initial..side
:noellipses diff --patch-with-raw initial..side
diff --patch-with-stat -r initial..side
diff --patch-with-raw -r initial..side
:noellipses diff --patch-with-raw -r initial..side
diff --name-status dir2 dir
diff --no-index --name-status dir2 dir
diff --no-index --name-status -- dir2 dir
diff --no-index dir dir3
diff main main^ side
# Can't use spaces...
diff --line-prefix=abc main main^ side
diff --dirstat main~1 main~2
diff --dirstat initial rearrange
diff --dirstat-by-file initial rearrange
diff --dirstat --cc main~1 main
# No-index --abbrev and --no-abbrev
diff --raw initial
:noellipses diff --raw initial
diff --raw --abbrev=4 initial
:noellipses diff --raw --abbrev=4 initial
diff --raw --no-abbrev initial
diff --no-index --raw dir2 dir
:noellipses diff --no-index --raw dir2 dir
diff --no-index --raw --abbrev=4 dir2 dir
:noellipses diff --no-index --raw --abbrev=4 dir2 dir
diff --no-index --raw --no-abbrev dir2 dir
diff-tree --pretty --root --stat --compact-summary initial
diff-tree --pretty -R --root --stat --compact-summary initial
diff-tree --pretty note
diff-tree --pretty --notes note
diff-tree --format=%N note
diff-tree --stat --compact-summary initial mode
diff-tree -R --stat --compact-summary initial mode
EOF
test_expect_success !WITH_BREAKING_CHANGES 'whatchanged needs --i-still-use-this' '
test_must_fail git whatchanged >message 2>&1 &&
test_grep "nominated for removal" message
'
test_expect_success 'log -m matches pure log' '
git log main >result &&
process_diffs result >expected &&
git log -m >result &&
process_diffs result >actual &&
test_cmp expected actual
'
test_expect_success 'log --diff-merges=on matches --diff-merges=separate' '
git log -p --diff-merges=separate main >result &&
process_diffs result >expected &&
git log -p --diff-merges=on main >result &&
process_diffs result >actual &&
test_cmp expected actual
'
test_expect_success 'log --dd matches --diff-merges=1 -p' '
git log --diff-merges=1 -p main >result &&
process_diffs result >expected &&
git log --dd main >result &&
process_diffs result >actual &&
test_cmp expected actual
'
test_expect_success 'deny wrong log.diffMerges config' '
test_config log.diffMerges wrong-value &&
test_expect_code 128 git log
'
test_expect_success 'git config log.diffMerges first-parent' '
git log -p --diff-merges=first-parent main >result &&
process_diffs result >expected &&
test_config log.diffMerges first-parent &&
git log -p --diff-merges=on main >result &&
process_diffs result >actual &&
test_cmp expected actual
'
test_expect_success 'git config log.diffMerges first-parent vs -m' '
git log -p --diff-merges=first-parent main >result &&
process_diffs result >expected &&
test_config log.diffMerges first-parent &&
git log -p -m main >result &&
process_diffs result >actual &&
test_cmp expected actual
'
# -m in "git diff-index" means "match missing", that differs
# from its meaning in "git diff". Let's check it in diff-index.
# The line in the output for removed file should disappear when
# we provide -m in diff-index.
test_expect_success 'git diff-index -m' '
rm -f file1 &&
git diff-index HEAD >without-m &&
lines_count=$(wc -l <without-m) &&
git diff-index -m HEAD >with-m &&
git restore file1 &&
test_line_count = $((lines_count - 1)) with-m
'
test_expect_success 'log -S requires an argument' '
test_must_fail git log -S
'
test_expect_success 'diff --cached on unborn branch' '
git symbolic-ref HEAD refs/heads/unborn &&
git diff --cached >result &&
process_diffs result >actual &&
process_diffs "$TEST_DIRECTORY/t4013/diff.diff_--cached" >expected &&
test_cmp expected actual
'
test_expect_success 'diff --cached -- file on unborn branch' '
git diff --cached -- file0 >result &&
process_diffs result >actual &&
process_diffs "$TEST_DIRECTORY/t4013/diff.diff_--cached_--_file0" >expected &&
test_cmp expected actual
'
test_expect_success 'diff --line-prefix with spaces' '
git diff --line-prefix="| | | " --cached -- file0 >result &&
process_diffs result >actual &&
process_diffs "$TEST_DIRECTORY/t4013/diff.diff_--line-prefix_--cached_--_file0" >expected &&
test_cmp expected actual
'
test_expect_success 'diff-tree --stdin with log formatting' '
cat >expect <<-\EOF &&
Side
Third
Second
EOF
git rev-list main | git diff-tree --stdin --format=%s -s >actual &&
test_cmp expect actual
'
test_expect_success 'diff-tree --stdin with pathspec' '
cat >expect <<-EOF &&
Third
dir/sub
Second
dir/sub
EOF
git rev-list main^ |
git diff-tree -r --stdin --name-only --format=%s dir >actual &&
test_cmp expect actual
'
test_expect_success 'show A B ... -- <pathspec>' '
# side touches dir/sub, file0, and file3
# main^ touches dir/sub, and file1
# main^^ touches dir/sub, file0, and file2
git show --name-only --format="<%s>" side main^ main^^ -- dir >actual &&
cat >expect <<-\EOF &&
<Side>
dir/sub
<Third>
dir/sub
<Second>
dir/sub
EOF
test_cmp expect actual
'
test_expect_success 'diff -I<regex>: setup' '
git checkout main &&
test_seq 50 >file0 &&
git commit -m "Set up -I<regex> test file" file0 &&
test_seq 50 | sed -e "s/13/ten and three/" -e "/7\$/d" >file0 &&
echo >>file0
'
test_expect_success 'diff -I<regex>' '
git diff --ignore-blank-lines -I"ten.*e" -I"^[124-9]" >actual &&
cat >expect <<-\EOF &&
diff --git a/file0 b/file0
--- a/file0
+++ b/file0
@@ -34,7 +31,6 @@
34
35
36
-37
38
39
40
EOF
compare_diff_patch expect actual
'
test_expect_success 'diff -I<regex> --stat' '
git diff --stat --ignore-blank-lines -I"ten.*e" -I"^[124-9]" >actual &&
cat >expect <<-\EOF &&
file0 | 1 -
1 file changed, 1 deletion(-)
EOF
test_cmp expect actual
'
test_expect_success 'diff -I<regex>: detect malformed regex' '
test_expect_code 129 git diff --ignore-matching-lines="^[124-9" 2>error &&
test_grep "invalid regex given to -I: " error
'
test_expect_success 'diff -I<regex>: ignore matching file' '
test_when_finished "git rm -f file1" &&
test_seq 50 >file1 &&
git add file1 &&
test_seq 50 | sed -e "s/13/ten and three/" -e "s/^[124-9].*/& /" >file1 &&
: >actual &&
git diff --raw --ignore-blank-lines -I"ten.*e" -I"^[124-9]" >>actual &&
git diff --name-only --ignore-blank-lines -I"ten.*e" -I"^[124-9]" >>actual &&
git diff --name-status --ignore-blank-lines -I"ten.*e" -I"^[124-9]" >>actual &&
test_grep ! "file1" actual
'
test_expect_success 'diff -I<regex>: ignore all content changes' '
test_when_finished "git rm -f file1 file2 file3" &&
: >file1 &&
git add file1 &&
: >file2 &&
git add file2 &&
: >file3 &&
git add file3 &&
rm -f file1 file2 &&
mkdir file2 &&
echo "A" >file3 &&
A_hash=$(git hash-object -w file3) &&
echo "B" >file3 &&
B_hash=$(git hash-object -w file3) &&
cat <<-EOF | git update-index --index-info &&
100644 $A_hash 1 file3
100644 $B_hash 2 file3
EOF
test_diff_no_content_changes () {
git diff $1 --ignore-blank-lines -I".*" >actual &&
test_line_count = 3 actual &&
test_grep "file1" actual &&
test_grep "file2" actual &&
test_grep "file3" actual &&
test_grep ! "diff --git" actual
} &&
test_diff_no_content_changes "--raw" &&
test_diff_no_content_changes "--name-only" &&
test_diff_no_content_changes "--name-status" &&
: >actual &&
test_must_fail git diff --quiet -I".*" >actual &&
test_must_be_empty actual
'
# check_prefix <patch> <src> <dst>
# check only lines with paths to avoid dependency on exact oid/contents
check_prefix () {
grep -E '^(diff|---|\+\+\+) ' "$1" >actual.paths &&
cat >expect <<-EOF &&
diff --git $2 $3
--- $2
+++ $3
EOF
test_cmp expect actual.paths
}
test_expect_success 'diff-files does not respect diff.noPrefix' '
git -c diff.noPrefix diff-files -p >actual &&
check_prefix actual a/file0 b/file0
'
test_expect_success 'diff-files respects --no-prefix' '
git diff-files -p --no-prefix >actual &&
check_prefix actual file0 file0
'
test_expect_success 'diff respects diff.noPrefix' '
git -c diff.noPrefix diff >actual &&
check_prefix actual file0 file0
'
test_expect_success 'diff --default-prefix overrides diff.noPrefix' '
git -c diff.noPrefix diff --default-prefix >actual &&
check_prefix actual a/file0 b/file0
'
test_expect_success 'diff respects diff.mnemonicPrefix' '
git -c diff.mnemonicPrefix diff >actual &&
check_prefix actual i/file0 w/file0
'
test_expect_success 'diff --default-prefix overrides diff.mnemonicPrefix' '
git -c diff.mnemonicPrefix diff --default-prefix >actual &&
check_prefix actual a/file0 b/file0
'
test_expect_success 'diff respects diff.srcPrefix' '
git -c diff.srcPrefix=x/ diff >actual &&
check_prefix actual x/file0 b/file0
'
test_expect_success 'diff respects diff.dstPrefix' '
git -c diff.dstPrefix=y/ diff >actual &&
check_prefix actual a/file0 y/file0
'
test_expect_success 'diff --src-prefix overrides diff.srcPrefix' '
git -c diff.srcPrefix=y/ diff --src-prefix=z/ >actual &&
check_prefix actual z/file0 b/file0
'
test_expect_success 'diff --dst-prefix overrides diff.dstPrefix' '
git -c diff.dstPrefix=y/ diff --dst-prefix=z/ >actual &&
check_prefix actual a/file0 z/file0
'
test_expect_success 'diff.{src,dst}Prefix ignored with diff.noPrefix' '
git -c diff.dstPrefix=y/ -c diff.srcPrefix=x/ -c diff.noPrefix diff >actual &&
check_prefix actual file0 file0
'
test_expect_success 'diff.{src,dst}Prefix ignored with diff.mnemonicPrefix' '
git -c diff.dstPrefix=x/ -c diff.srcPrefix=y/ -c diff.mnemonicPrefix diff >actual &&
check_prefix actual i/file0 w/file0
'
test_expect_success 'diff.{src,dst}Prefix ignored with --default-prefix' '
git -c diff.dstPrefix=x/ -c diff.srcPrefix=y/ diff --default-prefix >actual &&
check_prefix actual a/file0 b/file0
'
test_expect_success 'diff --no-renames cannot be abbreviated' '
test_expect_code 129 git diff --no-rename >actual 2>error &&
test_must_be_empty actual &&
grep "invalid option: --no-rename" error
'
test_done