[PATCH 0/3] solaris test results

[PATCH 0/3] solaris test results

[Jeff King]

I have now run every test script <= t9001 using the current 'master' on
the SunOS 5.8 box available to me. It _mostly_ passed. Following are
three patches:

  1/3: git_config_*: don't assume we are parsing a config file

       This is an actual minor bug which was covered by most platforms'
       ability to print (null) for NULL. I posted this earlier, but with
       a typo.

  2/3: t3404: use configured shell instead of /bin/sh

       This is a problem purely in the test script, not git itself.

  3/3: diff: fix java funcname pattern for solaris

       This is a Solaris-specific bug in git.

With these fixes, everything passes for me with a few exceptions:

  - Sun's diff doesn't understand "-u". I was able to use GNU diff.
    Since comparing actual and expected output is so common, we could
    potentially abstract this with a "test_cmp()" function and use
    something platform specific. It's probably not worth the trouble, as
    it impacts only the test suite, and only on systems with a totally
    broken diff.

  - t4020 fails without gnu grep, as it requires "grep -a"

  - t4024 fails unless /usr/xpg4/bin is in your path, as the regular
    version of 'expr' is unhappy with us (I didn't investigate too
    closely)

  - t4118, t4200, t8001, and t8002 fail unless you have GNU sed. The
    xpg4 sed barfs if there's no newline at the end of input (and this
    is specifically part of these tests)

  - I couldn't personally run t5502, t5505, t5512, t5520, or t9001, all
    of which require the Git.pm module; the version of perl on this
    machine is old (5.005_02) and complained about the 'our' keyword

  - t7505 uses a hook which hard-codes /bin/sh but uses syntax that
    the Solaris /bin/sh doesn't like. Maybe hooks should get their
    $SHELL value replaced?

  - t3900 mostly passes, but fails to correctly convert between EUCJP
    and ISO-2022-JP (in either direction). I didn't investigate very
    far.

  - git-filter-branch invokes "sh" for the commit filter, which invokes
    the broken Solaris /bin/sh. This isn't wrong, exactly, but it might
    make more sense to invoke $SHELL.

Now I must go gouge out my eyes, so that I may never see the output of
Solaris /bin/sh ever again.

-Peff

[PATCH 1/3] git_config_*: don't assume we are parsing a config file

[Jeff King]

These functions get called by other code, including parsing
config options from the command line. In that case,
config_file_name is NULL, leading to an ugly message or even
a segfault on some implementations of printf.

Signed-off-by: Jeff King <peff@peff.net>
---
 config.c |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/config.c b/config.c
index 8064cae..cba2bcf 100644
--- a/config.c
+++ b/config.c
@@ -280,11 +280,18 @@ int git_parse_ulong(const char *value, unsigned long *ret)
 	return 0;
 }
 
+static void die_bad_config(const char *name)
+{
+	if (config_file_name)
+		die("bad config value for '%s' in %s", name, config_file_name);
+	die("bad config value for '%s'", name);
+}
+
 int git_config_int(const char *name, const char *value)
 {
 	long ret;
 	if (!git_parse_long(value, &ret))
-		die("bad config value for '%s' in %s", name, config_file_name);
+		die_bad_config(name);
 	return ret;
 }
 
@@ -292,7 +299,7 @@ unsigned long git_config_ulong(const char *name, const char *value)
 {
 	unsigned long ret;
 	if (!git_parse_ulong(value, &ret))
-		die("bad config value for '%s' in %s", name, config_file_name);
+		die_bad_config(name);
 	return ret;
 }
 
-- 
1.5.4.2.247.g107bd

[PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

The fake-editor shell script invoked /bin/sh; normally this
is fine, unless the /bin/sh doesn't meet our compatibility
requirements, as is the case with Solaris. Specifically, the
$() syntax used by fake-editor is not understood.

Signed-off-by: Jeff King <peff@peff.net>
---
 t/t3404-rebase-interactive.sh |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index e5ed745..62e65d7 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -61,8 +61,8 @@ test_expect_success 'setup' '
 	git tag I
 '
 
-cat > fake-editor.sh <<\EOF
-#!/bin/sh
+echo "#!$SHELL" >fake-editor
+cat >> fake-editor.sh <<\EOF
 case "$1" in
 */COMMIT_EDITMSG)
 	test -z "$FAKE_COMMIT_MESSAGE" || echo "$FAKE_COMMIT_MESSAGE" > "$1"
-- 
1.5.4.2.247.g107bd

[PATCH 3/3] diff: fix java funcname pattern for solaris

[Jeff King]

The Solaris regex library doesn't like having the '$' anchor
inside capture parentheses. It rejects the match, causing
t4018 to fail.

Signed-off-by: Jeff King <peff@peff.net>
---
 diff.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/diff.c b/diff.c
index 58fe775..0f18ee9 100644
--- a/diff.c
+++ b/diff.c
@@ -1199,7 +1199,7 @@ static struct builtin_funcname_pattern {
 			"new\\|return\\|switch\\|throw\\|while\\)\n"
 			"^[ 	]*\\(\\([ 	]*"
 			"[A-Za-z_][A-Za-z_0-9]*\\)\\{2,\\}"
-			"[ 	]*([^;]*$\\)" },
+			"[ 	]*([^;]*\\)$" },
 	{ "tex", "^\\(\\\\\\(sub\\)*section{.*\\)$" },
 };
 
-- 
1.5.4.2.247.g107bd

Re: [PATCH 0/3] solaris test results

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

>   - Sun's diff doesn't understand "-u". I was able to use GNU diff.
>     Since comparing actual and expected output is so common, we could
>     potentially abstract this with a "test_cmp()" function and use
>     something platform specific. It's probably not worth the trouble, as
>     it impacts only the test suite, and only on systems with a totally
>     broken diff.

It is unfair to call diff without -u "totally broken".  It is
not even in POSIX yet IIRC.

>   - t7505 uses a hook which hard-codes /bin/sh but uses syntax that
>     the Solaris /bin/sh doesn't like. Maybe hooks should get their
>     $SHELL value replaced?

You've already did that in your [PATCH 2/3], haven't you?  So
why not?

Re: [PATCH 0/3] solaris test results

[Jeff King]

On Wed, Feb 20, 2008 at 04:34:25PM -0800, Junio C Hamano wrote:

> >   - Sun's diff doesn't understand "-u". I was able to use GNU diff.
> >     Since comparing actual and expected output is so common, we could
> >     potentially abstract this with a "test_cmp()" function and use
> >     something platform specific. It's probably not worth the trouble, as
> >     it impacts only the test suite, and only on systems with a totally
> >     broken diff.
> 
> It is unfair to call diff without -u "totally broken".  It is
> not even in POSIX yet IIRC.

Fair enough (and you are right that it is not even POSIX). Is it
something we want to work around? We "diff -u" quite a bit in the test
suite.

> >   - t7505 uses a hook which hard-codes /bin/sh but uses syntax that
> >     the Solaris /bin/sh doesn't like. Maybe hooks should get their
> >     $SHELL value replaced?
> 
> You've already did that in your [PATCH 2/3], haven't you?  So
> why not?

Because I didn't look very closely, and I assumed it was one of the
regular hooks. But yes, it is defined in the script and could get the
same treatment.

-Peff

Re: [PATCH 0/3] solaris test results

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> On Wed, Feb 20, 2008 at 04:34:25PM -0800, Junio C Hamano wrote:
>
>> >   - Sun's diff doesn't understand "-u". I was able to use GNU diff.
>> >     Since comparing actual and expected output is so common, we could
>> >     potentially abstract this with a "test_cmp()" function and use
>> >     something platform specific. It's probably not worth the trouble, as
>> >     it impacts only the test suite, and only on systems with a totally
>> >     broken diff.
>> 
>> It is unfair to call diff without -u "totally broken".  It is
>> not even in POSIX yet IIRC.
>
> Fair enough (and you are right that it is not even POSIX). Is it
> something we want to work around? We "diff -u" quite a bit in the test
> suite.

Here is a possible solution.

This is a fairly mechanical substitution (grepping for "git diff -u"
and "diff -u", and replacing them with test_compare_expect.

Some tests get the order of comparison wrong (should always be
"diff expect current" to make the error stand out in -v output),
but I did not update them.  That would be for later rounds,
perhaps, if we decide to do this.

-- >8 --
Subject: [PATCH] tests: test_compare_expect helper function

We tend to use "diff -u" for comparing expected output from
actual, but diff on some platforms lack "-u" (it is not in POSIX
yet).

This mechanically replaces "diff -u expected actual" with
test_compare_expect helper function.

Test scripts can be run with --no-diff-u option, to use "git
diff -u --no-index" for comparison instead.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t0003-attributes.sh              |    2 +-
 t/t0022-crlf-rename.sh             |    2 +-
 t/t1300-repo-config.sh             |    2 +-
 t/t2200-add-update.sh              |    2 +-
 t/t3001-ls-files-others-exclude.sh |    2 +-
 t/t3030-merge-recursive.sh         |   42 ++++++++++++++++++------------------
 t/t3050-subprojects-fetch.sh       |    4 +-
 t/t3060-ls-files-with-tree.sh      |    2 +-
 t/t3201-branch-contains.sh         |    6 ++--
 t/t3404-rebase-interactive.sh      |    4 +-
 t/t3405-rebase-malformed.sh        |    4 +-
 t/t3406-rebase-message.sh          |    2 +-
 t/t3701-add-interactive.sh         |    4 +-
 t/t3902-quoted.sh                  |   16 ++++++------
 t/t3903-stash.sh                   |    2 +-
 t/t4023-diff-rename-typechange.sh  |    6 ++--
 t/t4024-diff-optimize-common.sh    |    2 +-
 t/t4025-hunk-header.sh             |    2 +-
 t/t4201-shortlog.sh                |    2 +-
 t/t5505-remote.sh                  |    6 ++--
 t/t5510-fetch.sh                   |    2 +-
 t/t5512-ls-remote.sh               |    8 +++---
 t/t5515-fetch-merge-logic.sh       |    2 +-
 t/t6004-rev-list-path-optim.sh     |    2 +-
 t/t6009-rev-list-parent.sh         |    2 +-
 t/t6027-merge-binary.sh            |    4 +-
 t/t7010-setup.sh                   |   18 +++++++-------
 t/t7501-commit.sh                  |   14 ++++++------
 t/t7502-commit.sh                  |   14 ++++++------
 t/t7502-status.sh                  |    2 +-
 t/t7600-merge.sh                   |    2 +-
 t/t8003-blame.sh                   |    4 +-
 t/t9001-send-email.sh              |    2 +-
 t/t9116-git-svn-log.sh             |   24 ++++++++++----------
 t/t9200-git-cvsexportcommit.sh     |   14 ++++++------
 t/t9300-fast-import.sh             |    2 +-
 t/test-lib.sh                      |   27 +++++++++++++++++++++++
 37 files changed, 142 insertions(+), 115 deletions(-)

diff --git a/t/t0003-attributes.sh b/t/t0003-attributes.sh
index 47f08a4..8d85acb 100755
--- a/t/t0003-attributes.sh
+++ b/t/t0003-attributes.sh
@@ -11,7 +11,7 @@ attr_check () {
 
 	git check-attr test -- "$path" >actual &&
 	echo "$path: test: $2" >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 }
 
diff --git a/t/t0022-crlf-rename.sh b/t/t0022-crlf-rename.sh
index 430a1d1..651ce2f 100755
--- a/t/t0022-crlf-rename.sh
+++ b/t/t0022-crlf-rename.sh
@@ -26,7 +26,7 @@ test_expect_success 'diff -M' '
 	git diff-tree -M -r --name-status HEAD^ HEAD |
 	sed -e "s/R[0-9]*/RNUM/" >actual &&
 	echo "RNUM	sample	elpmas" >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 4928a57..e0e95ce 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -465,7 +465,7 @@ weird
 EOF
 
 test_expect_success "section was removed properly" \
-	"git diff -u expect .git/config"
+	"test_compare_expect expect .git/config"
 
 rm .git/config
 
diff --git a/t/t2200-add-update.sh b/t/t2200-add-update.sh
index 24f892f..75abda1 100755
--- a/t/t2200-add-update.sh
+++ b/t/t2200-add-update.sh
@@ -62,7 +62,7 @@ test_expect_success 'cache tree has not been corrupted' '
 	sed -e "s/ 0	/	/" >expect &&
 	git ls-tree -r $(git write-tree) |
 	sed -e "s/ blob / /" >current &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
diff --git a/t/t3001-ls-files-others-exclude.sh b/t/t3001-ls-files-others-exclude.sh
index b4297ba..0b9d2ea 100755
--- a/t/t3001-ls-files-others-exclude.sh
+++ b/t/t3001-ls-files-others-exclude.sh
@@ -97,7 +97,7 @@ cat > expect << EOF
 EOF
 
 test_expect_success 'git-status honours core.excludesfile' \
-	'diff -u expect output'
+	'test_compare_expect expect output'
 
 test_expect_success 'trailing slash in exclude allows directory match(1)' '
 
diff --git a/t/t3030-merge-recursive.sh b/t/t3030-merge-recursive.sh
index 607f57f..edfdbfd 100755
--- a/t/t3030-merge-recursive.sh
+++ b/t/t3030-merge-recursive.sh
@@ -43,7 +43,7 @@ test_expect_success 'setup 1' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_expect_success 'setup 2' '
@@ -61,7 +61,7 @@ test_expect_success 'setup 2' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual &&
+	test_compare_expect expected actual &&
 
 	echo goodbye >>a &&
 	o2=$(git hash-object a) &&
@@ -82,7 +82,7 @@ test_expect_success 'setup 2' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_expect_success 'setup 3' '
@@ -100,7 +100,7 @@ test_expect_success 'setup 3' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual &&
+	test_compare_expect expected actual &&
 
 	rm -f b && mkdir b && echo df-1 >b/c && git add b/c &&
 	o3=$(git hash-object b/c) &&
@@ -119,7 +119,7 @@ test_expect_success 'setup 3' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_expect_success 'setup 4' '
@@ -137,7 +137,7 @@ test_expect_success 'setup 4' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual &&
+	test_compare_expect expected actual &&
 
 	rm -f a && mkdir a && echo df-2 >a/c && git add a/c &&
 	o4=$(git hash-object a/c) &&
@@ -156,7 +156,7 @@ test_expect_success 'setup 4' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_expect_success 'setup 5' '
@@ -174,7 +174,7 @@ test_expect_success 'setup 5' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual &&
+	test_compare_expect expected actual &&
 
 	rm -f b &&
 	echo remove-conflict >a &&
@@ -195,7 +195,7 @@ test_expect_success 'setup 5' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -214,7 +214,7 @@ test_expect_success 'setup 6' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o0 0	d/e"
 	) >expected &&
-	git diff -u expected actual &&
+	test_compare_expect expected actual &&
 
 	rm -fr d && echo df-3 >d && git add d &&
 	o6=$(git hash-object d) &&
@@ -233,7 +233,7 @@ test_expect_success 'setup 6' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o6 0	d"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_expect_success 'merge-recursive simple' '
@@ -265,7 +265,7 @@ test_expect_success 'merge-recursive result' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -297,7 +297,7 @@ test_expect_success 'merge-recursive remove conflict' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -318,7 +318,7 @@ test_expect_success 'merge-recursive result' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -352,7 +352,7 @@ test_expect_success 'merge-recursive d/f conflict result' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -386,7 +386,7 @@ test_expect_success 'merge-recursive d/f conflict result the other way' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -420,7 +420,7 @@ test_expect_success 'merge-recursive d/f conflict result' '
 		echo "100644 $o0 1	d/e"
 		echo "100644 $o1 2	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -454,7 +454,7 @@ test_expect_success 'merge-recursive d/f conflict result' '
 		echo "100644 $o0 1	d/e"
 		echo "100644 $o1 3	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -480,7 +480,7 @@ test_expect_success 'reset and bind merge' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual &&
+	test_compare_expect expected actual &&
 
 	git read-tree --prefix=a1/ master &&
 	git ls-files -s >actual &&
@@ -498,7 +498,7 @@ test_expect_success 'reset and bind merge' '
 		echo "100644 $o0 0	c"
 		echo "100644 $o1 0	d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 	git read-tree --prefix=z/ master &&
 	git ls-files -s >actual &&
@@ -520,7 +520,7 @@ test_expect_success 'reset and bind merge' '
 		echo "100644 $o0 0	z/c"
 		echo "100644 $o1 0	z/d/e"
 	) >expected &&
-	git diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
diff --git a/t/t3050-subprojects-fetch.sh b/t/t3050-subprojects-fetch.sh
index 34f26a8..15fbdf3 100755
--- a/t/t3050-subprojects-fetch.sh
+++ b/t/t3050-subprojects-fetch.sh
@@ -26,7 +26,7 @@ test_expect_success clone '
 		cd cloned &&
 		(git rev-parse HEAD; git ls-files -s) >../actual
 	) &&
-	diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_expect_success advance '
@@ -46,7 +46,7 @@ test_expect_success fetch '
 		git pull &&
 		(git rev-parse HEAD; git ls-files -s) >../actual
 	) &&
-	diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_done
diff --git a/t/t3060-ls-files-with-tree.sh b/t/t3060-ls-files-with-tree.sh
index 68eb266..ece38d0 100755
--- a/t/t3060-ls-files-with-tree.sh
+++ b/t/t3060-ls-files-with-tree.sh
@@ -66,6 +66,6 @@ test_expect_success 'git -ls-files --with-tree should succeed from subdir' '
 cd ..
 test_expect_success \
     'git -ls-files --with-tree should add entries from named tree.' \
-    'diff -u expected output'
+    'test_compare_expect expected output'
 
 test_done
diff --git a/t/t3201-branch-contains.sh b/t/t3201-branch-contains.sh
index 9ef593f..a711f54 100755
--- a/t/t3201-branch-contains.sh
+++ b/t/t3201-branch-contains.sh
@@ -31,7 +31,7 @@ test_expect_success 'branch --contains=master' '
 	{
 		echo "  master" && echo "* side"
 	} >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -41,7 +41,7 @@ test_expect_success 'branch --contains master' '
 	{
 		echo "  master" && echo "* side"
 	} >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -51,7 +51,7 @@ test_expect_success 'branch --contains=side' '
 	{
 		echo "* side"
 	} >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 62e65d7..76927f8 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -146,8 +146,8 @@ EOF
 test_expect_success 'stop on conflicting pick' '
 	git tag new-branch1 &&
 	! git rebase -i master &&
-	diff -u expect .git/.dotest-merge/patch &&
-	diff -u expect2 file1 &&
+	test_compare_expect expect .git/.dotest-merge/patch &&
+	test_compare_expect expect2 file1 &&
 	test 4 = $(grep -v "^#" < .git/.dotest-merge/done | wc -l) &&
 	test 0 = $(grep -ve "^#" -e "^$" < .git/.dotest-merge/git-rebase-todo |
 		wc -l)
diff --git a/t/t3405-rebase-malformed.sh b/t/t3405-rebase-malformed.sh
index e4e2e64..8bb412e 100755
--- a/t/t3405-rebase-malformed.sh
+++ b/t/t3405-rebase-malformed.sh
@@ -41,8 +41,8 @@ test_expect_success rebase '
 	git rebase master side &&
 	git cat-file commit HEAD | sed -e "1,/^\$/d" >F1 &&
 
-	diff -u F0 F1 &&
-	diff -u F F0
+	test_compare_expect F0 F1 &&
+	test_compare_expect F F0
 '
 
 test_done
diff --git a/t/t3406-rebase-message.sh b/t/t3406-rebase-message.sh
index 332b2b2..9753939 100755
--- a/t/t3406-rebase-message.sh
+++ b/t/t3406-rebase-message.sh
@@ -37,7 +37,7 @@ test_expect_success 'rebase -m' '
 	git rebase -m master >report &&
 	sed -n -e "/^Already applied: /p" \
 		-e "/^Committed: /p" report >actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
diff --git a/t/t3701-add-interactive.sh b/t/t3701-add-interactive.sh
index c8dc1ac..1bb2aae 100755
--- a/t/t3701-add-interactive.sh
+++ b/t/t3701-add-interactive.sh
@@ -24,7 +24,7 @@ EOF
 test_expect_success 'diff works (initial)' '
 	(echo d; echo 1) | git add -i >output &&
 	sed -ne "/new file/,/content/p" <output >diff &&
-	diff -u expected diff
+	test_compare_expect expected diff
 '
 test_expect_success 'revert works (initial)' '
 	git add file &&
@@ -57,7 +57,7 @@ EOF
 test_expect_success 'diff works (commit)' '
 	(echo d; echo 1) | git add -i >output &&
 	sed -ne "/^index/,/content/p" <output >diff &&
-	diff -u expected diff
+	test_compare_expect expected diff
 '
 test_expect_success 'revert works (commit)' '
 	git add file &&
diff --git a/t/t3902-quoted.sh b/t/t3902-quoted.sh
index 73da45f..02eb9ff 100755
--- a/t/t3902-quoted.sh
+++ b/t/t3902-quoted.sh
@@ -78,28 +78,28 @@ EOF
 
 test_expect_success 'check fully quoted output from ls-files' '
 
-	git ls-files >current && diff -u expect.quoted current
+	git ls-files >current && test_compare_expect expect.quoted current
 
 '
 
 test_expect_success 'check fully quoted output from diff-files' '
 
 	git diff --name-only >current &&
-	diff -u expect.quoted current
+	test_compare_expect expect.quoted current
 
 '
 
 test_expect_success 'check fully quoted output from diff-index' '
 
 	git diff --name-only HEAD >current &&
-	diff -u expect.quoted current
+	test_compare_expect expect.quoted current
 
 '
 
 test_expect_success 'check fully quoted output from diff-tree' '
 
 	git diff --name-only HEAD^ HEAD >current &&
-	diff -u expect.quoted current
+	test_compare_expect expect.quoted current
 
 '
 
@@ -111,28 +111,28 @@ test_expect_success 'setting core.quotepath' '
 
 test_expect_success 'check fully quoted output from ls-files' '
 
-	git ls-files >current && diff -u expect.raw current
+	git ls-files >current && test_compare_expect expect.raw current
 
 '
 
 test_expect_success 'check fully quoted output from diff-files' '
 
 	git diff --name-only >current &&
-	diff -u expect.raw current
+	test_compare_expect expect.raw current
 
 '
 
 test_expect_success 'check fully quoted output from diff-index' '
 
 	git diff --name-only HEAD >current &&
-	diff -u expect.raw current
+	test_compare_expect expect.raw current
 
 '
 
 test_expect_success 'check fully quoted output from diff-tree' '
 
 	git diff --name-only HEAD^ HEAD >current &&
-	diff -u expect.raw current
+	test_compare_expect expect.raw current
 
 '
 
diff --git a/t/t3903-stash.sh b/t/t3903-stash.sh
index 9a9a250..4f5e579 100755
--- a/t/t3903-stash.sh
+++ b/t/t3903-stash.sh
@@ -34,7 +34,7 @@ EOF
 test_expect_success 'parents of stash' '
 	test $(git rev-parse stash^) = $(git rev-parse HEAD) &&
 	git diff stash^2..stash > output &&
-	diff -u output expect
+	test_compare_expect output expect
 '
 
 test_expect_success 'apply needs clean working directory' '
diff --git a/t/t4023-diff-rename-typechange.sh b/t/t4023-diff-rename-typechange.sh
index 255604e..177e78a 100755
--- a/t/t4023-diff-rename-typechange.sh
+++ b/t/t4023-diff-rename-typechange.sh
@@ -57,7 +57,7 @@ test_expect_success 'cross renames to be detected for regular files' '
 		echo "R100	foo	bar"
 		echo "R100	bar	foo"
 	} | sort >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -68,7 +68,7 @@ test_expect_success 'cross renames to be detected for typechange' '
 		echo "R100	foo	bar"
 		echo "R100	bar	foo"
 	} | sort >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -79,7 +79,7 @@ test_expect_success 'moves and renames' '
 		echo "R100	foo	bar"
 		echo "T100	foo"
 	} | sort >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
diff --git a/t/t4024-diff-optimize-common.sh b/t/t4024-diff-optimize-common.sh
index 3c66102..318ce54 100755
--- a/t/t4024-diff-optimize-common.sh
+++ b/t/t4024-diff-optimize-common.sh
@@ -150,7 +150,7 @@ test_expect_success 'diff -U0' '
 	do
 		git diff -U0 file-?$n
 	done | zc >actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
diff --git a/t/t4025-hunk-header.sh b/t/t4025-hunk-header.sh
index 9ba06b7..542bf30 100755
--- a/t/t4025-hunk-header.sh
+++ b/t/t4025-hunk-header.sh
@@ -37,7 +37,7 @@ test_expect_success 'hunk header truncation with an overly long line' '
 		echo " A $N$N$N$N$N$N$N$N$N2"
 		echo " L  $N$N$N$N$N$N$N$N$N1"
 	) >expected &&
-	diff -u actual expected
+	test_compare_expect actual expected
 
 '
 
diff --git a/t/t4201-shortlog.sh b/t/t4201-shortlog.sh
index 6d12efb..f9859bc 100755
--- a/t/t4201-shortlog.sh
+++ b/t/t4201-shortlog.sh
@@ -45,6 +45,6 @@ A U Thor (5):
 
 EOF
 
-test_expect_success 'shortlog wrapping' 'diff -u expect out'
+test_expect_success 'shortlog wrapping' 'test_compare_expect expect out'
 
 test_done
diff --git a/t/t5505-remote.sh b/t/t5505-remote.sh
index 636aec2..cf20ec4 100755
--- a/t/t5505-remote.sh
+++ b/t/t5505-remote.sh
@@ -25,7 +25,7 @@ setup_repository () {
 tokens_match () {
 	echo "$1" | tr ' ' '\012' | sort | sed -e '/^$/d' >expect &&
 	echo "$2" | tr ' ' '\012' | sort | sed -e '/^$/d' >actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 }
 
 check_remote_track () {
@@ -74,7 +74,7 @@ test_expect_success 'add another remote' '
 	sed -e "/^refs\/remotes\/origin\//d" \
 	    -e "/^refs\/remotes\/second\//d" >actual &&
 	>expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 )
 '
 
@@ -93,7 +93,7 @@ test_expect_success 'remove remote' '
 	git for-each-ref "--format=%(refname)" refs/remotes |
 	sed -e "/^refs\/remotes\/origin\//d" >actual &&
 	>expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 )
 '
 
diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh
index 9b948c1..17add89 100755
--- a/t/t5510-fetch.sh
+++ b/t/t5510-fetch.sh
@@ -249,7 +249,7 @@ test_expect_success 'bundle should record HEAD correctly' '
 	do
 		echo "$(git rev-parse --verify $h) $h"
 	done >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
diff --git a/t/t5512-ls-remote.sh b/t/t5512-ls-remote.sh
index 6ec5f7c..60def72 100755
--- a/t/t5512-ls-remote.sh
+++ b/t/t5512-ls-remote.sh
@@ -24,28 +24,28 @@ test_expect_success setup '
 test_expect_success 'ls-remote --tags .git' '
 
 	git ls-remote --tags .git >actual &&
-	diff -u expected.tag actual
+	test_compare_expect expected.tag actual
 
 '
 
 test_expect_success 'ls-remote .git' '
 
 	git ls-remote .git >actual &&
-	diff -u expected.all actual
+	test_compare_expect expected.all actual
 
 '
 
 test_expect_success 'ls-remote --tags self' '
 
 	git ls-remote --tags self >actual &&
-	diff -u expected.tag actual
+	test_compare_expect expected.tag actual
 
 '
 
 test_expect_success 'ls-remote self' '
 
 	git ls-remote self >actual &&
-	diff -u expected.all actual
+	test_compare_expect expected.all actual
 
 '
 
diff --git a/t/t5515-fetch-merge-logic.sh b/t/t5515-fetch-merge-logic.sh
index 31c1081..85ff226 100755
--- a/t/t5515-fetch-merge-logic.sh
+++ b/t/t5515-fetch-merge-logic.sh
@@ -148,7 +148,7 @@ do
 		} >"$actual" &&
 		if test -f "$expect"
 		then
-			git diff -u "$expect" "$actual" &&
+			test_compare_expect "$expect" "$actual" &&
 			rm -f "$actual"
 		else
 			# this is to help developing new tests.
diff --git a/t/t6004-rev-list-path-optim.sh b/t/t6004-rev-list-path-optim.sh
index 80d7198..0624cc4 100755
--- a/t/t6004-rev-list-path-optim.sh
+++ b/t/t6004-rev-list-path-optim.sh
@@ -45,7 +45,7 @@ test_expect_success 'further setup' '
 test_expect_success 'path optimization 2' '
 	( echo "$side"; echo "$initial" ) >expected &&
 	git rev-list HEAD -- a >actual &&
-	diff -u expected actual
+	test_compare_expect expected actual
 '
 
 test_done
diff --git a/t/t6009-rev-list-parent.sh b/t/t6009-rev-list-parent.sh
index be3d238..763934a 100755
--- a/t/t6009-rev-list-parent.sh
+++ b/t/t6009-rev-list-parent.sh
@@ -31,7 +31,7 @@ test_expect_failure 'one is ancestor of others and should not be shown' '
 
 	git rev-list one --not four >result &&
 	>expect &&
-	diff -u expect result
+	test_compare_expect expect result
 
 '
 
diff --git a/t/t6027-merge-binary.sh b/t/t6027-merge-binary.sh
index a7358f7..0731022 100755
--- a/t/t6027-merge-binary.sh
+++ b/t/t6027-merge-binary.sh
@@ -45,7 +45,7 @@ test_expect_success resolve '
 		false
 	else
 		git ls-files -s >current
-		diff -u current expect
+		test_compare_expect current expect
 	fi
 '
 
@@ -60,7 +60,7 @@ test_expect_success recursive '
 		false
 	else
 		git ls-files -s >current
-		diff -u current expect
+		test_compare_expect current expect
 	fi
 '
 
diff --git a/t/t7010-setup.sh b/t/t7010-setup.sh
index e809e0e..8351841 100755
--- a/t/t7010-setup.sh
+++ b/t/t7010-setup.sh
@@ -18,7 +18,7 @@ test_expect_success 'git add (absolute)' '
 	git add "$D/a/b/c/d" &&
 	git ls-files >current &&
 	echo a/b/c/d >expect &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
@@ -32,7 +32,7 @@ test_expect_success 'git add (funny relative)' '
 	) &&
 	git ls-files >current &&
 	echo a/e/f >expect &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
@@ -43,7 +43,7 @@ test_expect_success 'git rm (absolute)' '
 	git rm -f --cached "$D/a/b/c/d" &&
 	git ls-files >current &&
 	echo a/e/f >expect &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
@@ -57,7 +57,7 @@ test_expect_success 'git rm (funny relative)' '
 	) &&
 	git ls-files >current &&
 	echo a/b/c/d >expect &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
@@ -67,7 +67,7 @@ test_expect_success 'git ls-files (absolute)' '
 	git add a &&
 	git ls-files "$D/a/e/../b" >current &&
 	echo a/b/c/d >expect &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
@@ -80,7 +80,7 @@ test_expect_success 'git ls-files (relative #1)' '
 		git ls-files "../b/c"
 	)  >current &&
 	echo c/d >expect &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
@@ -93,7 +93,7 @@ test_expect_success 'git ls-files (relative #2)' '
 		git ls-files --full-name "../e/f"
 	)  >current &&
 	echo a/e/f >expect &&
-	diff -u expect current
+	test_compare_expect expect current
 
 '
 
@@ -126,13 +126,13 @@ test_expect_success 'log using absolute path names' '
 
 	git log a/b/c/d >f1.txt &&
 	git log "$(pwd)/a/b/c/d" >f2.txt &&
-	diff -u f1.txt f2.txt
+	test_compare_expect f1.txt f2.txt
 '
 
 test_expect_success 'blame using absolute path names' '
 	git blame a/b/c/d >f1.txt &&
 	git blame "$(pwd)/a/b/c/d" >f2.txt &&
-	diff -u f1.txt f2.txt
+	test_compare_expect f1.txt f2.txt
 '
 
 test_expect_success 'setup deeper work tree' '
diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 361886c..f2d89c0 100755
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -203,7 +203,7 @@ test_expect_success 'sign off (1)' '
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
-	diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -223,7 +223,7 @@ $existing" &&
 		git var GIT_COMMITTER_IDENT |
 		sed -e "s/>.*/>/" -e "s/^/Signed-off-by: /"
 	) >expected &&
-	diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -240,7 +240,7 @@ test_expect_success 'multiple -m' '
 		echo
 		echo three
 	) >expected &&
-	diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -301,12 +301,12 @@ test_expect_success 'same tree (merge and amend merge)' '
 	git merge -s ours side -m "empty ok" &&
 	git diff HEAD^ HEAD >actual &&
 	: >expected &&
-	diff -u expected actual &&
+	test_compare_expect expected actual &&
 
 	git commit --amend -m "empty really ok" &&
 	git diff HEAD^ HEAD >actual &&
 	: >expected &&
-	diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -323,7 +323,7 @@ test_expect_success 'amend using the message from another commit' '
 	git commit --allow-empty --amend -C "$old" &&
 	git show --pretty="format:%ad %s" "$old" >expected &&
 	git show --pretty="format:%ad %s" HEAD >actual &&
-	diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
@@ -341,7 +341,7 @@ test_expect_success 'amend using the message from a commit named with tag' '
 	git commit --allow-empty --amend -C tagged-old &&
 	git show --pretty="format:%ad %s" "$old" >expected &&
 	git show --pretty="format:%ad %s" HEAD >actual &&
-	diff -u expected actual
+	test_compare_expect expected actual
 
 '
 
diff --git a/t/t7502-commit.sh b/t/t7502-commit.sh
index b780fdd..f9616bf 100755
--- a/t/t7502-commit.sh
+++ b/t/t7502-commit.sh
@@ -85,7 +85,7 @@ test_expect_success 'verbose' '
 	git add negative &&
 	git status -v | sed -ne "/^diff --git /p" >actual &&
 	echo "diff --git a/negative b/negative" >expect &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -95,7 +95,7 @@ test_expect_success 'cleanup commit messages (verbatim,-t)' '
 	{ echo;echo "# text";echo; } >expect &&
 	git commit --cleanup=verbatim -t expect -a &&
 	git cat-file -p HEAD |sed -e "1,/^\$/d" |head -n 3 >actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -104,7 +104,7 @@ test_expect_success 'cleanup commit messages (verbatim,-F)' '
 	echo >>negative &&
 	git commit --cleanup=verbatim -F expect -a &&
 	git cat-file -p HEAD |sed -e "1,/^\$/d">actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -113,7 +113,7 @@ test_expect_success 'cleanup commit messages (verbatim,-m)' '
 	echo >>negative &&
 	git commit --cleanup=verbatim -m "$(cat expect)" -a &&
 	git cat-file -p HEAD |sed -e "1,/^\$/d">actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -124,7 +124,7 @@ test_expect_success 'cleanup commit messages (whitespace,-F)' '
 	echo "# text" >expect &&
 	git commit --cleanup=whitespace -F text -a &&
 	git cat-file -p HEAD |sed -e "1,/^\$/d">actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -135,7 +135,7 @@ test_expect_success 'cleanup commit messages (strip,-F)' '
 	echo sample >expect &&
 	git commit --cleanup=strip -F text -a &&
 	git cat-file -p HEAD |sed -e "1,/^\$/d">actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
@@ -150,7 +150,7 @@ test_expect_success 'cleanup commit messages (strip,-F,-e)' '
 	{ echo;echo sample;echo; } >text &&
 	git commit -e -F text -a &&
 	head -n 4 .git/COMMIT_EDITMSG >actual &&
-	diff -u expect actual
+	test_compare_expect expect actual
 
 '
 
diff --git a/t/t7502-status.sh b/t/t7502-status.sh
index e006074..9b9c7a7 100755
--- a/t/t7502-status.sh
+++ b/t/t7502-status.sh
@@ -146,7 +146,7 @@ cat <<EOF >expect
 EOF
 test_expect_success 'status of partial commit excluding new file in index' '
 	git status dir1/modified >output &&
-	diff -u expect output
+	test_compare_expect expect output
 '
 
 test_done
diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index 50c51c8..15efd65 100755
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -108,7 +108,7 @@ create_merge_msgs() {
 }
 
 verify_diff() {
-	if ! diff -u "$1" "$2"
+	if ! test_compare_expect "$1" "$2"
 	then
 		echo "$3"
 		false
diff --git a/t/t8003-blame.sh b/t/t8003-blame.sh
index db51b3a..153f3e2 100755
--- a/t/t8003-blame.sh
+++ b/t/t8003-blame.sh
@@ -112,7 +112,7 @@ test_expect_success 'blame wholesale copy' '
 		echo mouse-Second
 		echo mouse-Third
 	} >expected &&
-	diff -u expected current
+	test_compare_expect expected current
 
 '
 
@@ -125,7 +125,7 @@ test_expect_success 'blame wholesale copy and more' '
 		echo cow-Fifth
 		echo mouse-Third
 	} >expected &&
-	diff -u expected current
+	test_compare_expect expected current
 
 '
 
diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index 2efaed4..7342780 100755
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -75,7 +75,7 @@ test_expect_success 'Show all headers' '
 		-e "s/^\(Message-Id:\).*/\1 MESSAGE-ID-STRING/" \
 		-e "s/^\(X-Mailer:\).*/\1 X-MAILER-STRING/" \
 		>actual-show-all-headers &&
-	diff -u expected-show-all-headers actual-show-all-headers
+	test_compare_expect expected-show-all-headers actual-show-all-headers
 '
 
 z8=zzzzzzzz
diff --git a/t/t9116-git-svn-log.sh b/t/t9116-git-svn-log.sh
index 902ed41..80f3b39 100755
--- a/t/t9116-git-svn-log.sh
+++ b/t/t9116-git-svn-log.sh
@@ -55,74 +55,74 @@ printf 'r1 \nr2 \nr4 \n' > expected-range-r1-r2-r4
 
 test_expect_success 'test ascending revision range' "
 	git reset --hard trunk &&
-	git svn log -r 1:4 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r1-r2-r4 -
+	git svn log -r 1:4 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r1-r2-r4 -
 	"
 
 printf 'r4 \nr2 \nr1 \n' > expected-range-r4-r2-r1
 
 test_expect_success 'test descending revision range' "
 	git reset --hard trunk &&
-	git svn log -r 4:1 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r4-r2-r1 -
+	git svn log -r 4:1 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r4-r2-r1 -
 	"
 
 printf 'r1 \nr2 \n' > expected-range-r1-r2
 
 test_expect_success 'test ascending revision range with unreachable revision' "
 	git reset --hard trunk &&
-	git svn log -r 1:3 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r1-r2 -
+	git svn log -r 1:3 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r1-r2 -
 	"
 
 printf 'r2 \nr1 \n' > expected-range-r2-r1
 
 test_expect_success 'test descending revision range with unreachable revision' "
 	git reset --hard trunk &&
-	git svn log -r 3:1 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r2-r1 -
+	git svn log -r 3:1 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r2-r1 -
 	"
 
 printf 'r2 \n' > expected-range-r2
 
 test_expect_success 'test ascending revision range with unreachable upper boundary revision and 1 commit' "
 	git reset --hard trunk &&
-	git svn log -r 2:3 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r2 -
+	git svn log -r 2:3 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r2 -
 	"
 
 test_expect_success 'test descending revision range with unreachable upper boundary revision and 1 commit' "
 	git reset --hard trunk &&
-	git svn log -r 3:2 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r2 -
+	git svn log -r 3:2 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r2 -
 	"
 
 printf 'r4 \n' > expected-range-r4
 
 test_expect_success 'test ascending revision range with unreachable lower boundary revision and 1 commit' "
 	git reset --hard trunk &&
-	git svn log -r 3:4 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r4 -
+	git svn log -r 3:4 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r4 -
 	"
 
 test_expect_success 'test descending revision range with unreachable lower boundary revision and 1 commit' "
 	git reset --hard trunk &&
-	git svn log -r 4:3 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r4 -
+	git svn log -r 4:3 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r4 -
 	"
 
 printf -- '------------------------------------------------------------------------\n' > expected-separator
 
 test_expect_success 'test ascending revision range with unreachable boundary revisions and no commits' "
 	git reset --hard trunk &&
-	git svn log -r 5:6 | diff -u expected-separator -
+	git svn log -r 5:6 | test_compare_expect expected-separator -
 	"
 
 test_expect_success 'test descending revision range with unreachable boundary revisions and no commits' "
 	git reset --hard trunk &&
-	git svn log -r 6:5 | diff -u expected-separator -
+	git svn log -r 6:5 | test_compare_expect expected-separator -
 	"
 
 test_expect_success 'test ascending revision range with unreachable boundary revisions and 1 commit' "
 	git reset --hard trunk &&
-	git svn log -r 3:5 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r4 -
+	git svn log -r 3:5 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r4 -
 	"
 
 test_expect_success 'test descending revision range with unreachable boundary revisions and 1 commit' "
 	git reset --hard trunk &&
-	git svn log -r 5:3 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r4 -
+	git svn log -r 5:3 | grep '^r[0-9]' | cut -d'|' -f1 | test_compare_expect expected-range-r4 -
 	"
 
 test_done
diff --git a/t/t9200-git-cvsexportcommit.sh b/t/t9200-git-cvsexportcommit.sh
index 58c59ed..2677799 100755
--- a/t/t9200-git-cvsexportcommit.sh
+++ b/t/t9200-git-cvsexportcommit.sh
@@ -37,7 +37,7 @@ check_entries () {
 	else
 		printf '%s\n' "$2" | tr '|' '\012' >expected
 	fi
-	diff -u expected actual
+	test_compare_expect expected actual
 }
 
 test_expect_success \
@@ -257,8 +257,8 @@ test_expect_success '-w option should work with relative GIT_DIR' '
       (cd "$GIT_DIR" &&
       GIT_DIR=. git cvsexportcommit -w "$CVSWORK" -c $id &&
       check_entries "$CVSWORK/W" "file1.txt/1.1/|file2.txt/1.1/" &&
-      diff -u "$CVSWORK/W/file1.txt" ../W/file1.txt &&
-      diff -u "$CVSWORK/W/file2.txt" ../W/file2.txt
+      test_compare_expect "$CVSWORK/W/file1.txt" ../W/file1.txt &&
+      test_compare_expect "$CVSWORK/W/file2.txt" ../W/file2.txt
       )
 '
 
@@ -279,9 +279,9 @@ test_expect_success 'check files before directories' '
 	git cvsexportcommit -w "$CVSWORK" -c $id &&
 	check_entries "$CVSWORK/E" "DS/1.1/|newfile5.txt/1.1/" &&
 	check_entries "$CVSWORK" "DS/1.1/|release-notes/1.2/" &&
-	diff -u "$CVSWORK/DS" DS &&
-	diff -u "$CVSWORK/E/DS" E/DS &&
-	diff -u "$CVSWORK/release-notes" release-notes
+	test_compare_expect "$CVSWORK/DS" DS &&
+	test_compare_expect "$CVSWORK/E/DS" E/DS &&
+	test_compare_expect "$CVSWORK/release-notes" release-notes
 
 '
 
@@ -293,7 +293,7 @@ test_expect_success 'commit a file with leading spaces in the name' '
 	id=$(git rev-parse HEAD) &&
 	git cvsexportcommit -w "$CVSWORK" -c $id &&
 	check_entries "$CVSWORK" " space/1.1/|DS/1.1/|release-notes/1.2/" &&
-	diff -u "$CVSWORK/ space" " space"
+	test_compare_expect "$CVSWORK/ space" " space"
 
 '
 
diff --git a/t/t9300-fast-import.sh b/t/t9300-fast-import.sh
index cceedbb..5b5ef19 100755
--- a/t/t9300-fast-import.sh
+++ b/t/t9300-fast-import.sh
@@ -117,7 +117,7 @@ test_expect_success \
 		--import-marks=marks.out \
 		--export-marks=marks.new \
 		</dev/null &&
-	git diff -u expect marks.new'
+	test_compare_expect expect marks.new'
 
 test_tick
 cat >input <<INPUT_END
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 83889c4..73cc867 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -52,6 +52,9 @@ case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
 		;;
 esac
 
+test_use_diff_u=t
+test_compare_stdin_file_=
+
 # Each test should start with something like this, after copyright notices:
 #
 # test_description='Description of this test...
@@ -79,6 +82,8 @@ do
 		verbose=t; shift ;;
 	-q|--q|--qu|--qui|--quie|--quiet)
 		quiet=t; shift ;;
+	--no-diff-u)
+		test_use_diff_u=; shift ;;
 	--no-color)
 	    color=; shift ;;
 	--no-python)
@@ -270,6 +275,24 @@ test_expect_code () {
 	echo >&3 ""
 }
 
+# Compare expected output and actual one.  The latter can be
+# '-' to compare the expected with the standard input
+test_compare_expect () {
+	case "$test_use_diff_u" in
+	t)
+		diff -u "$1" "$2" ;;
+	*)
+		case "$test_compare_stdin_file_" in
+		'')
+			test_compare_stdin_file_=/tmp/gittest.$$
+		esac
+		cat "$1" >"$test_compare_stdin_file_.1"
+		cat "$2" >"$test_compare_stdin_file_.2"
+		git diff -u --no-index \
+		"$test_compare_stdin_file_.1" "$test_compare_stdin_file_.2" ;;
+	esac
+}
+
 # Most tests can use the created repository, but some may need to create more.
 # Usage: test_create_repo <directory>
 test_create_repo () {
@@ -288,6 +311,10 @@ test_create_repo () {
 test_done () {
 	trap - exit
 
+	if test -n "$test_compare_stdin_file_"
+	then
+		rm -f "$test_compare_stdin_file_.[12]"
+	fi
 	if test "$test_fixed" != 0
 	then
 		say_color pass "fixed $test_fixed known breakage(s)"
-- 
1.5.4.2.261.g851a5

Re: [PATCH 0/3] solaris test results

[Junio C Hamano]

Junio C Hamano <gitster@pobox.com> writes:

> Jeff King <peff@peff.net> writes:
>
>> On Wed, Feb 20, 2008 at 04:34:25PM -0800, Junio C Hamano wrote:
>> ...
>>> It is unfair to call diff without -u "totally broken".  It is
>>> not even in POSIX yet IIRC.
>>
>> Fair enough (and you are right that it is not even POSIX). Is it
>> something we want to work around? We "diff -u" quite a bit in the test
>> suite.
>
> Here is a possible solution.

I have another one that converts "cmp" and "cmp -s" to the same
test_compare_expect, but I do not think it is worth posting
here.

I'll either apply both or discard both.  Haven't decided.

Re: [PATCH 0/3] solaris test results

[Jeff King]

On Thu, Feb 21, 2008 at 09:26:44PM -0800, Junio C Hamano wrote:

> Here is a possible solution.
> 
> This is a fairly mechanical substitution (grepping for "git diff -u"
> and "diff -u", and replacing them with test_compare_expect.

I think this approach is reasonable (though as I suggested in my
original message, I probably would have selected something a little
easier to type, like test_cmp).

> Test scripts can be run with --no-diff-u option, to use "git
> diff -u --no-index" for comparison instead.

I thought you were against using "git diff" in the test suite for this
purpose.  Using "diff -u" produces nice output in case of failure, but
even "cmp" can do the job of returning an exit code. Perhaps it makes
sense as a more robust fallback.

Perhaps the command line option should be --compare=cmp, which lets the
caller choose an appropriate fallback for their system (and which means
that you can use --compare="git diff" to make debugging more pleasant,
but confirm with --compare="cmp" before claiming breakage on the list).

But honestly, I do not care that much about this. I don't even usually
use Solaris; I happened to have access to a box, so I followed up on
Whit's bug report. It is probably not worth spending a lot of time
over-engineering a solution. I have no idea how common it is to run the
test suite on boxes without GNU diff.

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Johannes Sixt]

On Thursday 21 February 2008 01:00, Jeff King wrote:
> The fake-editor shell script invoked /bin/sh; normally this
> is fine, unless the /bin/sh doesn't meet our compatibility
> requirements, as is the case with Solaris. Specifically, the
> $() syntax used by fake-editor is not understood.
>
> Signed-off-by: Jeff King <peff@peff.net>
...
> -cat > fake-editor.sh <<\EOF
> -#!/bin/sh
> +echo "#!$SHELL" >fake-editor

Did you mean fake-editor.sh here?

> +cat >> fake-editor.sh <<\EOF
>  case "$1" in
>  */COMMIT_EDITMSG)
>  	test -z "$FAKE_COMMIT_MESSAGE" || echo "$FAKE_COMMIT_MESSAGE" > "$1"

-- Hannes

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

Good eyes ;-)

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

SHELL can be just "bash" or "dash" or whatever.  Makefile sets
and exports SHELL_PATH so use it when telling which shell to use
to fake-editor.sh

 t/t3404-rebase-interactive.sh |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 62e65d7..049aa37 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -61,7 +61,7 @@ test_expect_success 'setup' '
 	git tag I
 '
 
-echo "#!$SHELL" >fake-editor
+echo "#!$SHELL_PATH" >fake-editor.sh
 cat >> fake-editor.sh <<\EOF
 case "$1" in
 */COMMIT_EDITMSG)

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 09:13:39PM +0100, Johannes Sixt wrote:

> > -cat > fake-editor.sh <<\EOF
> > -#!/bin/sh
> > +echo "#!$SHELL" >fake-editor
> 
> Did you mean fake-editor.sh here?

Gah, yes. Not sure how I was even able to run the test with that error.

Junio, your $SHELL_PATH fix looks sensible, too.

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> On Sat, Feb 23, 2008 at 09:13:39PM +0100, Johannes Sixt wrote:
>
>> > -cat > fake-editor.sh <<\EOF
>> > -#!/bin/sh
>> > +echo "#!$SHELL" >fake-editor
>> 
>> Did you mean fake-editor.sh here?
>
> Gah, yes. Not sure how I was even able to run the test with that error.

Simple.  fake-editor.sh does not begin with #! anymore and exec
causes /bin/sh to run, and your system happens to have a sane
shell there.  If you used $SHELL not $SHELL_PATH and wrote to
fake-editor.sh, you would have noticed that using $SHELL there
was wrong as it would have said "#!bash" for you ;-)

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Johannes Sixt]

On Saturday 23 February 2008 21:34, Junio C Hamano wrote:
> -echo "#!$SHELL" >fake-editor
> +echo "#!$SHELL_PATH" >fake-editor.sh

Hm, when we run the test outside make, like

   $ sh t3404-rebase-interactive.sh

then the fake-editor.sh script begins with this line:

   #!

Isn't this a trap similar to what Jeff wanted to avoid?

-- Hannes

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 12:50:28PM -0800, Junio C Hamano wrote:

> > Gah, yes. Not sure how I was even able to run the test with that error.
> 
> Simple.  fake-editor.sh does not begin with #! anymore and exec
> causes /bin/sh to run, and your system happens to have a sane

I thought I tested it on the Solaris box with the broken shell, but
perhaps not.

> shell there.  If you used $SHELL not $SHELL_PATH and wrote to
> fake-editor.sh, you would have noticed that using $SHELL there
> was wrong as it would have said "#!bash" for you ;-)

Actually, my $SHELL is "/usr/local/bin/bash" on the box in question.

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 10:09:41PM +0100, Johannes Sixt wrote:

> On Saturday 23 February 2008 21:34, Junio C Hamano wrote:
> > -echo "#!$SHELL" >fake-editor
> > +echo "#!$SHELL_PATH" >fake-editor.sh
> 
> Hm, when we run the test outside make, like
> 
>    $ sh t3404-rebase-interactive.sh
> 
> then the fake-editor.sh script begins with this line:
> 
>    #!
> 
> Isn't this a trap similar to what Jeff wanted to avoid?

Well, the trap I wanted to avoid is that "/bin/sh" specifically is
broken. But yes, I think losing the ability to run the tests from the
commandline is bad.

Ideally we figured out a sane shell for our shell scripts in the main
build process, and we want to always use that here.  I think "git
rev-parse --sane-shell-path" is probably overkill. Maybe test-lib.sh can
source a file of build-time options? The "diff -u" vs "cmp" thing could
go there, as well.

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> Well, the trap I wanted to avoid is that "/bin/sh" specifically is
> broken. But yes, I think losing the ability to run the tests from the
> commandline is bad.

We never had it.  "make t3404-rebase-interactive" is the way to
do so.

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 04:12:19PM -0500, Jeff King wrote:

> > shell there.  If you used $SHELL not $SHELL_PATH and wrote to
> > fake-editor.sh, you would have noticed that using $SHELL there
> > was wrong as it would have said "#!bash" for you ;-)
> 
> Actually, my $SHELL is "/usr/local/bin/bash" on the box in question.

Hmm. Actually, we just set SHELL_PATH to SHELL in the Makefile. So I
really don't see the point of SHELL_PATH at all, unless there are some
setups where it is already set outside of git.

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> On Sat, Feb 23, 2008 at 04:12:19PM -0500, Jeff King wrote:
>
>> > shell there.  If you used $SHELL not $SHELL_PATH and wrote to
>> > fake-editor.sh, you would have noticed that using $SHELL there
>> > was wrong as it would have said "#!bash" for you ;-)
>> 
>> Actually, my $SHELL is "/usr/local/bin/bash" on the box in question.
>
> Hmm. Actually, we just set SHELL_PATH to SHELL in the Makefile. So I
> really don't see the point of SHELL_PATH at all, unless there are some
> setups where it is already set outside of git.

Well, on one of my machines, I seem to be getting SHELL=bash
(not /bin/bash).

Honestly, I do not think it matters getting the value from
Makefile for this particular case, but I'd rather get people
into habits to run "make tXXXX-name", not "sh ./tXXXX-name.sh",
unless they know what they are doing.

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 01:56:38PM -0800, Junio C Hamano wrote:

> > Well, the trap I wanted to avoid is that "/bin/sh" specifically is
> > broken. But yes, I think losing the ability to run the tests from the
> > commandline is bad.
> 
> We never had it.  "make t3404-rebase-interactive" is the way to
> do so.

Well, that is a surprise to me, since I have been using it for almost
two years with no problems. And I know I am not alone because others
have posted snippets on the list invoking a test via "sh -x", including
both Dscho and you.

Is there a good reason not to do so?

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 02:35:33PM -0800, Junio C Hamano wrote:

> > Hmm. Actually, we just set SHELL_PATH to SHELL in the Makefile. So I
> > really don't see the point of SHELL_PATH at all, unless there are some
> > setups where it is already set outside of git.
> 
> Well, on one of my machines, I seem to be getting SHELL=bash
> (not /bin/bash).

My point is that nothing ever turns that into /bin/bash, unless there is
something totally outside of git setting up SHELL_PATH (which is not set
up on any of my systems). I would think to handle the case you're
talking about, you would want to change

  SHELL_PATH ?= $(SHELL)

to something like

  SHELL_PATH ?= $(shell which $(SHELL))

> Honestly, I do not think it matters getting the value from
> Makefile for this particular case, but I'd rather get people
> into habits to run "make tXXXX-name", not "sh ./tXXXX-name.sh",
> unless they know what they are doing.

Why?

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> On Sat, Feb 23, 2008 at 01:56:38PM -0800, Junio C Hamano wrote:
>
>> > Well, the trap I wanted to avoid is that "/bin/sh" specifically is
>> > broken. But yes, I think losing the ability to run the tests from the
>> > commandline is bad.
>> 
>> We never had it.  "make t3404-rebase-interactive" is the way to
>> do so.
>
> Well, that is a surprise to me, since I have been using it for almost
> two years with no problems. And I know I am not alone because others
> have posted snippets on the list invoking a test via "sh -x", including
> both Dscho and you.
>
> Is there a good reason not to do so?

I think our messages are crossing, but (1) currently we do not
export much from t/Makefile and the only people who can get
affected are on platforms that do need custom configuration, and
the difference being subtle and rare makes it more surprising
and harder to diagnose when the difference does matter, (2) I'd
like to place some stuff in t/Makefile in such a way that no
tests that runs a server that listens to a network port is not
run by default, among other things, which means the difference
between "sh tXXXX-name.sh" and "make tXXXX-name" will get
bigger not smaller.

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 02:46:30PM -0800, Junio C Hamano wrote:

> I think our messages are crossing, but (1) currently we do not
> export much from t/Makefile and the only people who can get
> affected are on platforms that do need custom configuration, and
> the difference being subtle and rare makes it more surprising
> and harder to diagnose when the difference does matter, (2) I'd
> like to place some stuff in t/Makefile in such a way that no
> tests that runs a server that listens to a network port is not
> run by default, among other things, which means the difference
> between "sh tXXXX-name.sh" and "make tXXXX-name" will get
> bigger not smaller.

OK, thanks for explaining (point 2 was what I was looking for).
Personally, I think we are better off putting such configuration into a
file that gets sourced by test-lib.sh, but I don't overly care. I _do_
find "sh -x tXXXX-name.sh" useful from time to time, but mainly only
while debugging the test scripts themselves.

-Peff

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> Personally, I think we are better off putting such configuration into a
> file that gets sourced by test-lib.sh, but I don't overly care. I _do_
> find "sh -x tXXXX-name.sh" useful from time to time, but mainly only
> while debugging the test scripts themselves.

I do too.

I think the basic goal should be to come up with a way to make
sure that "cd t/ && make" and "cd t/ && sh -x tXXXX-name.sh"
would get an environment as close as possible to what happens
when you run "make test" at the toplevel.

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 02:55:42PM -0800, Junio C Hamano wrote:

> I think the basic goal should be to come up with a way to make
> sure that "cd t/ && make" and "cd t/ && sh -x tXXXX-name.sh"
> would get an environment as close as possible to what happens
> when you run "make test" at the toplevel.

I was thinking of something like this:

---
diff --git a/Makefile b/Makefile
index d33a556..9046b43 100644
--- a/Makefile
+++ b/Makefile
@@ -808,7 +808,7 @@ export TAR INSTALL DESTDIR SHELL_PATH
 
 ### Build rules
 
-all:: $(ALL_PROGRAMS) $(BUILT_INS) $(OTHER_PROGRAMS)
+all:: $(ALL_PROGRAMS) $(BUILT_INS) $(OTHER_PROGRAMS) GIT-BUILD-OPTIONS
 ifneq (,$X)
 	$(foreach p,$(patsubst %$X,%,$(filter %$X,$(ALL_PROGRAMS) $(BUILT_INS) git$X)), $(RM) '$p';)
 endif
@@ -1010,6 +1010,9 @@ GIT-CFLAGS: .FORCE-GIT-CFLAGS
 		echo "$$FLAGS" >GIT-CFLAGS; \
             fi
 
+GIT-BUILD-OPTIONS: .FORCE-GIT-BUILD-OPTIONS
+	@echo SHELL_PATH='$(SHELL_PATH_SQ)' >$@
+
 ### Detect Tck/Tk interpreter path changes
 ifndef NO_TCLTK
 TRACK_VARS = $(subst ','\'',-DTCLTK_PATH='$(TCLTK_PATH_SQ)')
@@ -1169,6 +1172,7 @@ endif
 
 .PHONY: all install clean strip
 .PHONY: .FORCE-GIT-VERSION-FILE TAGS tags cscope .FORCE-GIT-CFLAGS
+.PHONY: .FORCE-GIT-BUILD-OPTIONS
 
 ### Check documentation
 #
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 62e65d7..049aa37 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -61,7 +61,7 @@ test_expect_success 'setup' '
 	git tag I
 '
 
-echo "#!$SHELL" >fake-editor
+echo "#!$SHELL_PATH" >fake-editor.sh
 cat >> fake-editor.sh <<\EOF
 case "$1" in
 */COMMIT_EDITMSG)
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 83889c4..3c4e21f 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -342,6 +342,8 @@ if ! test -x ../test-chmtime; then
 	exit 1
 fi
 
+. ../GIT-BUILD-OPTIONS
+
 # Test repository
 test=trash
 rm -fr "$test"

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Junio C Hamano]

Jeff King <peff@peff.net> writes:

> On Sat, Feb 23, 2008 at 02:55:42PM -0800, Junio C Hamano wrote:
>
>> I think the basic goal should be to come up with a way to make
>> sure that "cd t/ && make" and "cd t/ && sh -x tXXXX-name.sh"
>> would get an environment as close as possible to what happens
>> when you run "make test" at the toplevel.
>
> I was thinking of something like this:
> ...
> diff --git a/t/test-lib.sh b/t/test-lib.sh
> index 83889c4..3c4e21f 100644
> --- a/t/test-lib.sh
> +++ b/t/test-lib.sh
> @@ -342,6 +342,8 @@ if ! test -x ../test-chmtime; then
>  	exit 1
>  fi
>  
> +. ../GIT-BUILD-OPTIONS

Sounds sane to me.

Re: [PATCH 2/3] t3404: use configured shell instead of /bin/sh

[Jeff King]

On Sat, Feb 23, 2008 at 04:03:44PM -0800, Junio C Hamano wrote:

> Sounds sane to me.

OK, here it is cleaned up a little (adding some missing quotation marks
and the proper gitignore) and with a commit message.

Possibly t/Makefile should also be getting this information to actually
run the test scripts. That would require either:
  - making the GIT-BUILD-OPTIONS both make and shell parseable, meaning
    changing SHELL_PATH='$(SHELL_PATH_SQ)' into SHELL_PATH=$(SHELL_PATH)
    and hoping nobody uses metacharacters
  - writing two separate files, one for shell and one for make
  - working some Makefile magic to set variables from the shell; this is
    not possible in ordinary make, but I suspect there are some GNU-isms
    we could use

-- >8 --
use build-time SHELL_PATH in test scripts

The top-level Makefile now creates a GIT-BUILD-OPTIONS file
which stores any options selected by the make process that
may be of use to further parts of the build process.
Specifically, we store the SHELL_PATH so that it can be used
by tests to construct shell scripts on the fly.

The format of the GIT-BUILD-OPTIONS file is Bourne shell,
and it is sourced by test-lib.sh; all tests can rely on just
having $SHELL_PATH correctly set in the environment.

The GIT-BUILD-OPTIONS file is written every time the
toplevel 'make' is invoked. Since the only users right now
are the test scripts, there's no drawback to updating its
timestamp. If something build-related depends on this, we
can do a trick similar to the one used by GIT-CFLAGS.

Signed-off-by: Jeff King <peff@peff.net>
---
 .gitignore                    |    1 +
 Makefile                      |    6 +++++-
 t/t3404-rebase-interactive.sh |    2 +-
 t/test-lib.sh                 |    2 ++
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 165b256..4ff2fec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+GIT-BUILD-OPTIONS
 GIT-CFLAGS
 GIT-GUI-VARS
 GIT-VERSION-FILE
diff --git a/Makefile b/Makefile
index d33a556..ba1aaf8 100644
--- a/Makefile
+++ b/Makefile
@@ -808,7 +808,7 @@ export TAR INSTALL DESTDIR SHELL_PATH
 
 ### Build rules
 
-all:: $(ALL_PROGRAMS) $(BUILT_INS) $(OTHER_PROGRAMS)
+all:: $(ALL_PROGRAMS) $(BUILT_INS) $(OTHER_PROGRAMS) GIT-BUILD-OPTIONS
 ifneq (,$X)
 	$(foreach p,$(patsubst %$X,%,$(filter %$X,$(ALL_PROGRAMS) $(BUILT_INS) git$X)), $(RM) '$p';)
 endif
@@ -1010,6 +1010,9 @@ GIT-CFLAGS: .FORCE-GIT-CFLAGS
 		echo "$$FLAGS" >GIT-CFLAGS; \
             fi
 
+GIT-BUILD-OPTIONS: .FORCE-GIT-BUILD-OPTIONS
+	@echo SHELL_PATH='$(SHELL_PATH_SQ)' >$@
+
 ### Detect Tck/Tk interpreter path changes
 ifndef NO_TCLTK
 TRACK_VARS = $(subst ','\'',-DTCLTK_PATH='$(TCLTK_PATH_SQ)')
@@ -1169,6 +1172,7 @@ endif
 
 .PHONY: all install clean strip
 .PHONY: .FORCE-GIT-VERSION-FILE TAGS tags cscope .FORCE-GIT-CFLAGS
+.PHONY: .FORCE-GIT-BUILD-OPTIONS
 
 ### Check documentation
 #
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 62e65d7..049aa37 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -61,7 +61,7 @@ test_expect_success 'setup' '
 	git tag I
 '
 
-echo "#!$SHELL" >fake-editor
+echo "#!$SHELL_PATH" >fake-editor.sh
 cat >> fake-editor.sh <<\EOF
 case "$1" in
 */COMMIT_EDITMSG)
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 83889c4..3c4e21f 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -342,6 +342,8 @@ if ! test -x ../test-chmtime; then
 	exit 1
 fi
 
+. ../GIT-BUILD-OPTIONS
+
 # Test repository
 test=trash
 rm -fr "$test"
-- 
1.5.4.2.276.g0ede