t/t9*: merge "grep | sed" pipelines

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Acked-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: Beat Bolli

t/t9118-git-svn-funky-branch-names.sh

@@ -38,7 +38,7 @@ test_expect_success 'setup svnrepo' '
 # SVN 1.7 will truncate "not-a%40{0]" to just "not-a".
 # Look at what SVN wound up naming the branch and use that.
 # Be sure to escape the @ if it shows up.
-non_reflog=$(svn_cmd ls "$svnrepo/pr ject/branches" | grep not-a | sed 's/\///' | sed 's/@/%40/')
+non_reflog=$(svn_cmd ls "$svnrepo/pr ject/branches" | sed -ne '/not-a/ { s/\///; s/@/%40/; p }')
 
 test_expect_success 'test clone with funky branch names' '
 	git svn clone -s "$svnrepo/pr ject" project &&

t/t9350-fast-export.sh

@@ -537,7 +537,7 @@ test_expect_success 'full-tree re-shows unmodified files'        '
 
 test_expect_success 'set-up a few more tags for tag export tests' '
 	git checkout -f main &&
-	HEAD_TREE=$(git show -s --pretty=raw HEAD | grep tree | sed "s/tree //") &&
+	HEAD_TREE=$(git show -s --pretty=raw HEAD | sed -n "/tree/s/tree //p") &&
 	git tag    tree_tag        -m "tagging a tree" $HEAD_TREE &&
 	git tag -a tree_tag-obj    -m "tagging a tree" $HEAD_TREE &&
 	git tag    tag-obj_tag     -m "tagging a tag" tree_tag-obj &&

t/t9824-git-p4-git-lfs.sh

@@ -18,7 +18,7 @@ test_file_in_lfs () {
 	sed -n '3,3 p' "$FILE" | grep "^size " &&
 	test_line_count = 3 "$FILE" &&
 	grep "size $SIZE" "$FILE" &&
-	HASH=$(grep "oid sha256:" "$FILE" | sed -e "s/oid sha256://g") &&
+	HASH=$(sed -ne "/oid sha256:/s/oid sha256://gp" "$FILE") &&
 	LFS_FILE=".git/lfs/objects/$(echo "$HASH" | cut -c1-2)/$(echo "$HASH" | cut -c3-4)/$HASH" &&
 	echo $EXPECTED_CONTENT >expect &&
 	test_path_is_file "$FILE" &&