'
cat > expect << EOF
+beta.noindent
+nextsection.nonewline
+123456.a123
+version.1.2.3eX.alpha
+EOF
+
+test_expect_success '--name-only --list' '
+ git config --name-only --list >output &&
+ test_cmp expect output
+'
+
+cat > expect << EOF
beta.noindent sillyValue
nextsection.nonewline wow2 for me
EOF
'
cat > expect << EOF
+beta.noindent
+nextsection.nonewline
+EOF
+
+test_expect_success '--name-only --get-regexp' '
+ git config --name-only --get-regexp in >output &&
+ test_cmp expect output
+'
+
+cat > expect << EOF
wow2 for me
wow4 for you
EOF
test_cmp expect .git/config
'
-test_expect_success 'alternative GIT_CONFIG (non-existing file should fail)' '
+test_expect_success 'alternative --file (non-existing file should fail)' '
test_must_fail git config --file non-existing-config -l
'
EOF
test_expect_success 'alternative GIT_CONFIG' '
- GIT_CONFIG=other-config git config -l >output &&
+ GIT_CONFIG=other-config git config --list >output &&
test_cmp expect output
'
test_expect_success 'alternative GIT_CONFIG (--file)' '
- git config --file other-config -l > output &&
+ git config --file other-config --list >output &&
test_cmp expect output
'
+test_expect_success 'alternative GIT_CONFIG (--file=-)' '
+ git config --file - --list <other-config >output &&
+ test_cmp expect output
+'
+
+test_expect_success 'setting a value in stdin is an error' '
+ test_must_fail git config --file - some.value foo
+'
+
+test_expect_success 'editing stdin is an error' '
+ test_must_fail git config --file - --edit
+'
+
test_expect_success 'refer config from subdirectory' '
mkdir x &&
(
'
-test_expect_success 'refer config from subdirectory via GIT_CONFIG' '
+test_expect_success 'refer config from subdirectory via --file' '
(
cd x &&
- GIT_CONFIG=../other-config git config --get ein.bahn >actual &&
+ git config --file=../other-config --get ein.bahn >actual &&
test_cmp expect actual
)
'
park = ausweis
EOF
-test_expect_success '--set in alternative GIT_CONFIG' '
- GIT_CONFIG=other-config git config anwohner.park ausweis &&
+test_expect_success '--set in alternative file' '
+ git config --file=other-config anwohner.park ausweis &&
test_cmp expect other-config
'
test_cmp expect actual
'
+test_expect_success '--int is at least 64 bits' '
+ git config giga.watts 121g &&
+ echo 129922760704 >expect &&
+ git config --int --get giga.watts >actual &&
+ test_cmp expect actual
+'
+
test_expect_success 'invalid unit' '
git config aninvalid.unit "1auto" &&
echo 1auto >expect &&
git config aninvalid.unit >actual &&
test_cmp expect actual &&
- cat > expect <<-\EOF
- fatal: bad config value for '\''aninvalid.unit'\'' in .git/config
- EOF
test_must_fail git config --int --get aninvalid.unit 2>actual &&
- test_cmp actual expect
+ test_i18ngrep "bad numeric config value .1auto. for .aninvalid.unit. in file .git/config: invalid unit" actual
+'
+
+test_expect_success 'line number is reported correctly' '
+ printf "[bool]\n\tvar\n" >invalid &&
+ test_must_fail git config -f invalid --path bool.var 2>actual &&
+ test_i18ngrep "line 2" actual
+'
+
+test_expect_success 'invalid stdin config' '
+ echo "[broken" | test_must_fail git config --list --file - >output 2>&1 &&
+ test_i18ngrep "bad config line 1 in standard input" output
'
cat > expect << EOF
trailingtilde = foo~
EOF
-test_expect_success NOT_MINGW 'set --path' '
+test_expect_success !MINGW 'set --path' '
rm -f .git/config &&
git config --path path.home "~/" &&
git config --path path.normal "/dev/null" &&
git config --path path.trailingtilde "foo~" &&
test_cmp expect .git/config'
-if test_have_prereq NOT_MINGW && test "${HOME+set}"
+if test_have_prereq !MINGW && test "${HOME+set}"
then
test_set_prereq HOMEVAR
fi
foo~
EOF
-test_expect_success NOT_MINGW 'get --path copes with unset $HOME' '
+test_expect_success !MINGW 'get --path copes with unset $HOME' '
(
unset HOME;
test_must_fail git config --get --path path.home \
git config --get --path path.normal >>result &&
git config --get --path path.trailingtilde >>result
) &&
- grep "[Ff]ailed to expand.*~/" msg &&
+ test_i18ngrep "[Ff]ailed to expand.*~/" msg &&
test_cmp expect result
'
test_must_fail git config --get --path path.bool
'
+test_expect_success 'get --expiry-date' '
+ rel="3.weeks.5.days.00:00" &&
+ rel_out="$rel ->" &&
+ cat >.git/config <<-\EOF &&
+ [date]
+ valid1 = "3.weeks.5.days 00:00"
+ valid2 = "Fri Jun 4 15:46:55 2010"
+ valid3 = "2017/11/11 11:11:11PM"
+ valid4 = "2017/11/10 09:08:07 PM"
+ valid5 = "never"
+ invalid1 = "abc"
+ EOF
+ cat >expect <<-EOF &&
+ $(test-date timestamp $rel)
+ 1275666415
+ 1510441871
+ 1510348087
+ 0
+ EOF
+ {
+ echo "$rel_out $(git config --expiry-date date.valid1)"
+ git config --expiry-date date.valid2 &&
+ git config --expiry-date date.valid3 &&
+ git config --expiry-date date.valid4 &&
+ git config --expiry-date date.valid5
+ } >actual &&
+ test_cmp expect actual &&
+ test_must_fail git config --expiry-date date.invalid1
+'
+
cat > expect << EOF
[quote]
leading = " test"
Qsection.sub=section.val5Q
EOF
test_expect_success '--null --list' '
- git config --null --list | nul_to_q >result &&
+ git config --null --list >result.raw &&
+ nul_to_q <result.raw >result &&
echo >>result &&
test_cmp expect result
'
test_expect_success '--null --get-regexp' '
- git config --null --get-regexp "val[0-9]" | nul_to_q >result &&
+ git config --null --get-regexp "val[0-9]" >result.raw &&
+ nul_to_q <result.raw >result &&
echo >>result &&
test_cmp expect result
'
test_expect_success SYMLINKS 'symlinked configuration' '
ln -s notyet myconfig &&
- GIT_CONFIG=myconfig git config test.frotz nitfol &&
+ git config --file=myconfig test.frotz nitfol &&
test -h myconfig &&
test -f notyet &&
- test "z$(GIT_CONFIG=notyet git config test.frotz)" = znitfol &&
- GIT_CONFIG=myconfig git config test.xyzzy rezrov &&
+ test "z$(git config --file=notyet test.frotz)" = znitfol &&
+ git config --file=myconfig test.xyzzy rezrov &&
test -h myconfig &&
test -f notyet &&
cat >expect <<-\EOF &&
rezrov
EOF
{
- GIT_CONFIG=notyet git config test.frotz &&
- GIT_CONFIG=notyet git config test.xyzzy
+ git config --file=notyet test.frotz &&
+ git config --file=notyet test.xyzzy
} >actual &&
test_cmp expect actual
'
test_expect_success 'nonexistent configuration' '
- (
- GIT_CONFIG=doesnotexist &&
- export GIT_CONFIG &&
- test_must_fail git config --list &&
- test_must_fail git config test.xyzzy
- )
+ test_must_fail git config --file=doesnotexist --list &&
+ test_must_fail git config --file=doesnotexist test.xyzzy
'
test_expect_success SYMLINKS 'symlink to nonexistent configuration' '
ln -s doesnotexist linktonada &&
ln -s linktonada linktolinktonada &&
- (
- GIT_CONFIG=linktonada &&
- export GIT_CONFIG &&
- test_must_fail git config --list &&
- GIT_CONFIG=linktolinktonada &&
- test_must_fail git config --list
- )
+ test_must_fail git config --file=linktonada --list &&
+ test_must_fail git config --file=linktolinktonada --list
'
test_expect_success 'check split_cmdline return' "
test_must_fail git -c name=value config core.name
'
+# We just need a type-specifier here that cares about the
+# distinction internally between a NULL boolean and a real
+# string (because most of git's internal parsers do care).
+# Using "--path" works, but we do not otherwise care about
+# its semantics.
+test_expect_success 'git -c can represent empty string' '
+ echo >expect &&
+ git -c foo.empty= config --path foo.empty >actual &&
+ test_cmp expect actual
+'
+
test_expect_success 'key sanity-checking' '
test_must_fail git config foo=bar &&
test_must_fail git config foo=.bar &&
test_cmp expect actual
'
+test_expect_success 'aliases can be CamelCased' '
+ test_config alias.CamelCased "rev-parse HEAD" &&
+ git CamelCased >out &&
+ git rev-parse HEAD >expect &&
+ test_cmp expect out
+'
+
test_expect_success 'git -c does not split values on equals' '
echo "value with = in it" >expect &&
git -c core.foo="value with = in it" config core.foo >actual &&
test_must_fail git -c "" rev-parse
'
+test_expect_success 'multiple git -c appends config' '
+ test_config alias.x "!git -c x.two=2 config --get-regexp ^x\.*" &&
+ cat >expect <<-\EOF &&
+ x.one 1
+ x.two 2
+ EOF
+ git -c x.one=1 x >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'last one wins: two level vars' '
+
+ # sec.var and sec.VAR are the same variable, as the first
+ # and the last level of a configuration variable name is
+ # case insensitive.
+
+ echo VAL >expect &&
+
+ git -c sec.var=val -c sec.VAR=VAL config --get sec.var >actual &&
+ test_cmp expect actual &&
+ git -c SEC.var=val -c sec.var=VAL config --get sec.var >actual &&
+ test_cmp expect actual &&
+
+ git -c sec.var=val -c sec.VAR=VAL config --get SEC.var >actual &&
+ test_cmp expect actual &&
+ git -c SEC.var=val -c sec.var=VAL config --get sec.VAR >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'last one wins: three level vars' '
+
+ # v.a.r and v.A.r are not the same variable, as the middle
+ # level of a three-level configuration variable name is
+ # case sensitive.
+
+ echo val >expect &&
+ git -c v.a.r=val -c v.A.r=VAL config --get v.a.r >actual &&
+ test_cmp expect actual &&
+ git -c v.a.r=val -c v.A.r=VAL config --get V.a.R >actual &&
+ test_cmp expect actual &&
+
+ # v.a.r and V.a.R are the same variable, as the first
+ # and the last level of a configuration variable name is
+ # case insensitive.
+
+ echo VAL >expect &&
+ git -c v.a.r=val -c v.a.R=VAL config --get v.a.r >actual &&
+ test_cmp expect actual &&
+ git -c v.a.r=val -c V.a.r=VAL config --get v.a.r >actual &&
+ test_cmp expect actual &&
+ git -c v.a.r=val -c v.a.R=VAL config --get V.a.R >actual &&
+ test_cmp expect actual &&
+ git -c v.a.r=val -c V.a.r=VAL config --get V.a.R >actual &&
+ test_cmp expect actual
+'
+
+for VAR in a .a a. a.0b a."b c". a."b c".0d
+do
+ test_expect_success "git -c $VAR=VAL rejects invalid '$VAR'" '
+ test_must_fail git -c "$VAR=VAL" config -l
+ '
+done
+
+for VAR in a.b a."b c".d
+do
+ test_expect_success "git -c $VAR=VAL works with valid '$VAR'" '
+ echo VAL >expect &&
+ git -c "$VAR=VAL" config --get "$VAR" >actual &&
+ test_cmp expect actual
+ '
+done
+
+test_expect_success 'git -c is not confused by empty environment' '
+ GIT_CONFIG_PARAMETERS="" git -c x.one=1 config --list
+'
+
test_expect_success 'git config --edit works' '
git config -f tmp test.value no &&
echo test.value=yes >expect &&
key garbage
EOF
test_must_fail git config --get section.key >actual 2>error &&
- grep " line 3 " error
+ test_i18ngrep " line 3 " error
'
test_expect_success 'barf on incomplete section header' '
key = value
EOF
test_must_fail git config --get section.key >actual 2>error &&
- grep " line 2 " error
+ test_i18ngrep " line 2 " error
'
test_expect_success 'barf on incomplete string' '
key = "value string
EOF
test_must_fail git config --get section.key >actual 2>error &&
- grep " line 3 " error
+ test_i18ngrep " line 3 " error
+'
+
+test_expect_success 'urlmatch' '
+ cat >.git/config <<-\EOF &&
+ [http]
+ sslVerify
+ [http "https://weak.example.com"]
+ sslVerify = false
+ cookieFile = /tmp/cookie.txt
+ EOF
+
+ test_expect_code 1 git config --bool --get-urlmatch doesnt.exist https://good.example.com >actual &&
+ test_must_be_empty actual &&
+
+ echo true >expect &&
+ git config --bool --get-urlmatch http.SSLverify https://good.example.com >actual &&
+ test_cmp expect actual &&
+
+ echo false >expect &&
+ git config --bool --get-urlmatch http.sslverify https://weak.example.com >actual &&
+ test_cmp expect actual &&
+
+ {
+ echo http.cookiefile /tmp/cookie.txt &&
+ echo http.sslverify false
+ } >expect &&
+ git config --get-urlmatch HTTP https://weak.example.com >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'urlmatch favors more specific URLs' '
+ cat >.git/config <<-\EOF &&
+ [http "https://example.com/"]
+ cookieFile = /tmp/root.txt
+ [http "https://example.com/subdirectory"]
+ cookieFile = /tmp/subdirectory.txt
+ [http "https://user@example.com/"]
+ cookieFile = /tmp/user.txt
+ [http "https://averylonguser@example.com/"]
+ cookieFile = /tmp/averylonguser.txt
+ [http "https://preceding.example.com"]
+ cookieFile = /tmp/preceding.txt
+ [http "https://*.example.com"]
+ cookieFile = /tmp/wildcard.txt
+ [http "https://*.example.com/wildcardwithsubdomain"]
+ cookieFile = /tmp/wildcardwithsubdomain.txt
+ [http "https://trailing.example.com"]
+ cookieFile = /tmp/trailing.txt
+ [http "https://user@*.example.com/"]
+ cookieFile = /tmp/wildcardwithuser.txt
+ [http "https://sub.example.com/"]
+ cookieFile = /tmp/sub.txt
+ EOF
+
+ echo http.cookiefile /tmp/root.txt >expect &&
+ git config --get-urlmatch HTTP https://example.com >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/subdirectory.txt >expect &&
+ git config --get-urlmatch HTTP https://example.com/subdirectory >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/subdirectory.txt >expect &&
+ git config --get-urlmatch HTTP https://example.com/subdirectory/nested >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/user.txt >expect &&
+ git config --get-urlmatch HTTP https://user@example.com/ >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/subdirectory.txt >expect &&
+ git config --get-urlmatch HTTP https://averylonguser@example.com/subdirectory >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/preceding.txt >expect &&
+ git config --get-urlmatch HTTP https://preceding.example.com >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/wildcard.txt >expect &&
+ git config --get-urlmatch HTTP https://wildcard.example.com >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/sub.txt >expect &&
+ git config --get-urlmatch HTTP https://sub.example.com/wildcardwithsubdomain >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/trailing.txt >expect &&
+ git config --get-urlmatch HTTP https://trailing.example.com >actual &&
+ test_cmp expect actual &&
+
+ echo http.cookiefile /tmp/sub.txt >expect &&
+ git config --get-urlmatch HTTP https://user@sub.example.com >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'urlmatch with wildcard' '
+ cat >.git/config <<-\EOF &&
+ [http]
+ sslVerify
+ [http "https://*.example.com"]
+ sslVerify = false
+ cookieFile = /tmp/cookie.txt
+ EOF
+
+ test_expect_code 1 git config --bool --get-urlmatch doesnt.exist https://good.example.com >actual &&
+ test_must_be_empty actual &&
+
+ echo true >expect &&
+ git config --bool --get-urlmatch http.SSLverify https://example.com >actual &&
+ test_cmp expect actual &&
+
+ echo true >expect &&
+ git config --bool --get-urlmatch http.SSLverify https://good-example.com >actual &&
+ test_cmp expect actual &&
+
+ echo true >expect &&
+ git config --bool --get-urlmatch http.sslverify https://deep.nested.example.com >actual &&
+ test_cmp expect actual &&
+
+ echo false >expect &&
+ git config --bool --get-urlmatch http.sslverify https://good.example.com >actual &&
+ test_cmp expect actual &&
+
+ {
+ echo http.cookiefile /tmp/cookie.txt &&
+ echo http.sslverify false
+ } >expect &&
+ git config --get-urlmatch HTTP https://good.example.com >actual &&
+ test_cmp expect actual &&
+
+ echo http.sslverify >expect &&
+ git config --get-urlmatch HTTP https://more.example.com.au >actual &&
+ test_cmp expect actual
+'
+
+# good section hygiene
+test_expect_failure 'unsetting the last key in a section removes header' '
+ cat >.git/config <<-\EOF &&
+ # some generic comment on the configuration file itself
+ # a comment specific to this "section" section.
+ [section]
+ # some intervening lines
+ # that should also be dropped
+
+ key = value
+ # please be careful when you update the above variable
+ EOF
+
+ cat >expect <<-\EOF &&
+ # some generic comment on the configuration file itself
+ EOF
+
+ git config --unset section.key &&
+ test_cmp expect .git/config
+'
+
+test_expect_failure 'adding a key into an empty section reuses header' '
+ cat >.git/config <<-\EOF &&
+ [section]
+ EOF
+
+ q_to_tab >expect <<-\EOF &&
+ [section]
+ Qkey = value
+ EOF
+
+ git config section.key value &&
+ test_cmp expect .git/config
+'
+
+test_expect_success POSIXPERM,PERL 'preserves existing permissions' '
+ chmod 0600 .git/config &&
+ git config imap.pass Hunter2 &&
+ perl -e \
+ "die q(badset) if ((stat(q(.git/config)))[2] & 07777) != 0600" &&
+ git config --rename-section imap pop &&
+ perl -e \
+ "die q(badrename) if ((stat(q(.git/config)))[2] & 07777) != 0600"
+'
+
+! test_have_prereq MINGW ||
+HOME="$(pwd)" # convert to Windows path
+
+test_expect_success 'set up --show-origin tests' '
+ INCLUDE_DIR="$HOME/include" &&
+ mkdir -p "$INCLUDE_DIR" &&
+ cat >"$INCLUDE_DIR"/absolute.include <<-\EOF &&
+ [user]
+ absolute = include
+ EOF
+ cat >"$INCLUDE_DIR"/relative.include <<-\EOF &&
+ [user]
+ relative = include
+ EOF
+ cat >"$HOME"/.gitconfig <<-EOF &&
+ [user]
+ global = true
+ override = global
+ [include]
+ path = "$INCLUDE_DIR/absolute.include"
+ EOF
+ cat >.git/config <<-\EOF
+ [user]
+ local = true
+ override = local
+ [include]
+ path = ../include/relative.include
+ EOF
+'
+
+test_expect_success '--show-origin with --list' '
+ cat >expect <<-EOF &&
+ file:$HOME/.gitconfig user.global=true
+ file:$HOME/.gitconfig user.override=global
+ file:$HOME/.gitconfig include.path=$INCLUDE_DIR/absolute.include
+ file:$INCLUDE_DIR/absolute.include user.absolute=include
+ file:.git/config user.local=true
+ file:.git/config user.override=local
+ file:.git/config include.path=../include/relative.include
+ file:.git/../include/relative.include user.relative=include
+ command line: user.cmdline=true
+ EOF
+ git -c user.cmdline=true config --list --show-origin >output &&
+ test_cmp expect output
+'
+
+test_expect_success '--show-origin with --list --null' '
+ cat >expect <<-EOF &&
+ file:$HOME/.gitconfigQuser.global
+ trueQfile:$HOME/.gitconfigQuser.override
+ globalQfile:$HOME/.gitconfigQinclude.path
+ $INCLUDE_DIR/absolute.includeQfile:$INCLUDE_DIR/absolute.includeQuser.absolute
+ includeQfile:.git/configQuser.local
+ trueQfile:.git/configQuser.override
+ localQfile:.git/configQinclude.path
+ ../include/relative.includeQfile:.git/../include/relative.includeQuser.relative
+ includeQcommand line:Quser.cmdline
+ trueQ
+ EOF
+ git -c user.cmdline=true config --null --list --show-origin >output.raw &&
+ nul_to_q <output.raw >output &&
+ # The here-doc above adds a newline that the --null output would not
+ # include. Add it here to make the two comparable.
+ echo >>output &&
+ test_cmp expect output
+'
+
+test_expect_success '--show-origin with single file' '
+ cat >expect <<-\EOF &&
+ file:.git/config user.local=true
+ file:.git/config user.override=local
+ file:.git/config include.path=../include/relative.include
+ EOF
+ git config --local --list --show-origin >output &&
+ test_cmp expect output
+'
+
+test_expect_success '--show-origin with --get-regexp' '
+ cat >expect <<-EOF &&
+ file:$HOME/.gitconfig user.global true
+ file:.git/config user.local true
+ EOF
+ git config --show-origin --get-regexp "user\.[g|l].*" >output &&
+ test_cmp expect output
+'
+
+test_expect_success '--show-origin getting a single key' '
+ cat >expect <<-\EOF &&
+ file:.git/config local
+ EOF
+ git config --show-origin user.override >output &&
+ test_cmp expect output
+'
+
+test_expect_success 'set up custom config file' '
+ CUSTOM_CONFIG_FILE="file\" (dq) and spaces.conf" &&
+ cat >"$CUSTOM_CONFIG_FILE" <<-\EOF
+ [user]
+ custom = true
+ EOF
+'
+
+test_expect_success !MINGW '--show-origin escape special file name characters' '
+ cat >expect <<-\EOF &&
+ file:"file\" (dq) and spaces.conf" user.custom=true
+ EOF
+ git config --file "$CUSTOM_CONFIG_FILE" --show-origin --list >output &&
+ test_cmp expect output
+'
+
+test_expect_success '--show-origin stdin' '
+ cat >expect <<-\EOF &&
+ standard input: user.custom=true
+ EOF
+ git config --file - --show-origin --list <"$CUSTOM_CONFIG_FILE" >output &&
+ test_cmp expect output
+'
+
+test_expect_success '--show-origin stdin with file include' '
+ cat >"$INCLUDE_DIR"/stdin.include <<-EOF &&
+ [user]
+ stdin = include
+ EOF
+ cat >expect <<-EOF &&
+ file:$INCLUDE_DIR/stdin.include include
+ EOF
+ echo "[include]path=\"$INCLUDE_DIR\"/stdin.include" \
+ | git config --show-origin --includes --file - user.stdin >output &&
+ test_cmp expect output
+'
+
+test_expect_success !MINGW '--show-origin blob' '
+ cat >expect <<-\EOF &&
+ blob:a9d9f9e555b5c6f07cbe09d3f06fe3df11e09c08 user.custom=true
+ EOF
+ blob=$(git hash-object -w "$CUSTOM_CONFIG_FILE") &&
+ git config --blob=$blob --show-origin --list >output &&
+ test_cmp expect output
+'
+
+test_expect_success !MINGW '--show-origin blob ref' '
+ cat >expect <<-\EOF &&
+ blob:"master:file\" (dq) and spaces.conf" user.custom=true
+ EOF
+ git add "$CUSTOM_CONFIG_FILE" &&
+ git commit -m "new config file" &&
+ git config --blob=master:"$CUSTOM_CONFIG_FILE" --show-origin --list >output &&
+ test_cmp expect output
+'
+
+test_expect_success '--local requires a repo' '
+ # we expect 128 to ensure that we do not simply
+ # fail to find anything and return code "1"
+ test_expect_code 128 nongit git config --local foo.bar
'
test_done
projects / platform / upstream / git.git / blobdiff