pretty: Add failing tests: --format output should honor logOutputEncoding

One can set an alias
	$ git config alias.lg "log --graph --pretty=format:'%Cred%h%Creset
	-%C(yellow)%d%Creset %s %Cgreen(%cd) %C(bold blue)<%an>%Creset'
	--abbrev-commit --date=local"

to see the log as a pretty tree (like *gitk* but in a terminal).

However, log messages written in an encoding i18n.commitEncoding which differs
from terminal encoding are shown corrupted even when i18n.logOutputEncoding
and terminal encoding are the same (e.g. log messages committed on a Cygwin box
with Windows-1251 encoding seen on a Linux box with a UTF-8 encoding and vice versa).

To simplify an example we can say the following two commands are expected
to give the same output to a terminal:

	$ git log --oneline --no-color
	$ git log --pretty=format:'%h %s'

However, the former pays attention to i18n.logOutputEncoding
configuration, while the latter does not when it formats "%s".

The same corruption is true for
	$ git diff --submodule=log
and
	$ git rev-list --pretty=format:%s HEAD
and
	$ git reset --hard

This patch adds failing tests for the next patch that fixes them.

Signed-off-by: Alexey Shumkin <Alex.Crezoff@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t4041-diff-submodule-option.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 #
 # Copyright (c) 2009 Jens Lehmann, based on t7401 by Ping Yin
+# Copyright (c) 2011 Alexey Shumkin (+ non-UTF-8 commit encoding tests)
 #
 
 test_description='Support for verbose submodule differences in git diff
@@ -10,6 +11,9 @@ This test tries to verify the sanity of the --submodule option of git diff.
 
 . ./test-lib.sh
 
+# String "added" in German (translated with Google Translate), encoded in UTF-8,
+# used in sample commit log messages in add_file() function below.
+added=$(printf "hinzugef\303\274gt")
 add_file () {
 	(
 		cd "$1" &&
@@ -19,7 +23,8 @@ add_file () {
 			echo "$name" >"$name" &&
 			git add "$name" &&
 			test_tick &&
-			git commit -m "Add $name" || exit
+			msg_added_iso88591=$(echo "Add $name ($added $name)" | iconv -f utf-8 -t iso-8859-1) &&
+			git -c 'i18n.commitEncoding=iso-8859-1' commit -m "$msg_added_iso88591"
 		done >/dev/null &&
 		git rev-parse --short --verify HEAD
 	)
@@ -89,29 +94,29 @@ test_expect_success 'diff.submodule does not affect plumbing' '
 commit_file sm1 &&
 head2=$(add_file sm1 foo3)
 
-test_expect_success 'modified submodule(forward)' '
+test_expect_failure 'modified submodule(forward)' '
 	git diff-index -p --submodule=log HEAD >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 $head1..$head2:
-	  > Add foo3
+	  > Add foo3 ($added foo3)
 	EOF
 	test_cmp expected actual
 '
 
-test_expect_success 'modified submodule(forward)' '
+test_expect_failure 'modified submodule(forward)' '
 	git diff --submodule=log >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 $head1..$head2:
-	  > Add foo3
+	  > Add foo3 ($added foo3)
 	EOF
 	test_cmp expected actual
 '
 
-test_expect_success 'modified submodule(forward) --submodule' '
+test_expect_failure 'modified submodule(forward) --submodule' '
 	git diff --submodule >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 $head1..$head2:
-	  > Add foo3
+	  > Add foo3 ($added foo3)
 	EOF
 	test_cmp expected actual
 '
@@ -138,25 +143,25 @@ head3=$(
 	git rev-parse --short --verify HEAD
 )
 
-test_expect_success 'modified submodule(backward)' '
+test_expect_failure 'modified submodule(backward)' '
 	git diff-index -p --submodule=log HEAD >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 $head2..$head3 (rewind):
-	  < Add foo3
-	  < Add foo2
+	  < Add foo3 ($added foo3)
+	  < Add foo2 ($added foo2)
 	EOF
 	test_cmp expected actual
 '
 
 head4=$(add_file sm1 foo4 foo5)
-test_expect_success 'modified submodule(backward and forward)' '
+test_expect_failure 'modified submodule(backward and forward)' '
 	git diff-index -p --submodule=log HEAD >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 $head2...$head4:
-	  > Add foo5
-	  > Add foo4
-	  < Add foo3
-	  < Add foo2
+	  > Add foo5 ($added foo5)
+	  > Add foo4 ($added foo4)
+	  < Add foo3 ($added foo3)
+	  < Add foo2 ($added foo2)
 	EOF
 	test_cmp expected actual
 '