t7400: make hash size independent

Instead of using cut with hard-coded hash sizes, use cut with fields, or
where that's not possible, sed with $OID_REGEX, so that the tests are
independent of hash size.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t7400-submodule-basic.sh

@@ -1231,7 +1231,7 @@ test_expect_success 'submodule helper list is not confused by common prefixes' '
 	git submodule add /dir1/b dir1/b &&
 	git submodule add /dir2/b dir2/b &&
 	git commit -m "first submodule commit" &&
-	git submodule--helper list dir1/b |cut -c51- >actual &&
+	git submodule--helper list dir1/b | cut -f 2 >actual &&
 	echo "dir1/b" >expect &&
 	test_cmp expect actual
 '
@@ -1260,7 +1260,7 @@ test_expect_success 'submodule update --init with a specification' '
 	pwd=$(pwd) &&
 	git clone file://"$pwd"/multisuper multisuper_clone &&
 	git -C multisuper_clone submodule update --init . ":(exclude)sub0" &&
-	git -C multisuper_clone submodule status |cut -c 1,43- >actual &&
+	git -C multisuper_clone submodule status | sed "s/$OID_REGEX //" >actual &&
 	test_cmp expect actual
 '
 
@@ -1271,7 +1271,7 @@ test_expect_success 'submodule update --init with submodule.active set' '
 	git -C multisuper_clone config submodule.active "." &&
 	git -C multisuper_clone config --add submodule.active ":(exclude)sub0" &&
 	git -C multisuper_clone submodule update --init &&
-	git -C multisuper_clone submodule status |cut -c 1,43- >actual &&
+	git -C multisuper_clone submodule status | sed "s/$OID_REGEX //" >actual &&
 	test_cmp expect actual
 '
 
@@ -1290,7 +1290,7 @@ test_expect_success 'submodule update and setting submodule.<name>.active' '
 	-sub3
 	EOF
 	git -C multisuper_clone submodule update &&
-	git -C multisuper_clone submodule status |cut -c 1,43- >actual &&
+	git -C multisuper_clone submodule status | sed "s/$OID_REGEX //" >actual &&
 	test_cmp expect actual
 '
 
@@ -1307,12 +1307,12 @@ test_expect_success 'clone active submodule without submodule url set' '
 		git submodule update &&
 		git submodule status >actual_raw &&
 
-		cut -c 1,43- actual_raw >actual &&
+		cut -d" " -f3- actual_raw >actual &&
 		cat >expect <<-\EOF &&
-		 sub0 (test2)
-		 sub1 (test2)
-		 sub2 (test2)
-		 sub3 (test2)
+		sub0 (test2)
+		sub1 (test2)
+		sub2 (test2)
+		sub3 (test2)
 		EOF
 		test_cmp expect actual
 	)
@@ -1328,7 +1328,7 @@ test_expect_success 'clone --recurse-submodules with a pathspec works' '
 	EOF
 
 	git clone --recurse-submodules="sub0" multisuper multisuper_clone &&
-	git -C multisuper_clone submodule status |cut -c1,43- >actual &&
+	git -C multisuper_clone submodule status | sed "s/$OID_REGEX //" >actual &&
 	test_cmp expected actual
 '
 
@@ -1345,7 +1345,7 @@ test_expect_success 'clone with multiple --recurse-submodules options' '
 		  --recurse-submodules=":(exclude)sub0" \
 		  --recurse-submodules=":(exclude)sub2" \
 		  multisuper multisuper_clone &&
-	git -C multisuper_clone submodule status |cut -c1,43- >actual &&
+	git -C multisuper_clone submodule status | sed "s/$OID_REGEX //" >actual &&
 	test_cmp expect actual
 '
 
@@ -1373,7 +1373,7 @@ test_expect_success 'clone and subsequent updates correctly auto-initialize subm
 		  --recurse-submodules=":(exclude)sub4" \
 		  multisuper multisuper_clone &&
 
-	git -C multisuper_clone submodule status |cut -c1,43- >actual &&
+	git -C multisuper_clone submodule status | sed "s/$OID_REGEX //" >actual &&
 	test_cmp expect actual &&
 
 	git -C multisuper submodule add ../sub1 sub4 &&
@@ -1382,7 +1382,7 @@ test_expect_success 'clone and subsequent updates correctly auto-initialize subm
 	# obtain the new superproject
 	git -C multisuper_clone pull &&
 	git -C multisuper_clone submodule update --init &&
-	git -C multisuper_clone submodule status |cut -c1,43- >actual &&
+	git -C multisuper_clone submodule status | sed "s/$OID_REGEX //" >actual &&
 	test_cmp expect2 actual
 '