test L = $(git cat-file commit HEAD | sed -ne \$p)
'
+test_expect_success 'rebase -i respects core.commentchar' '
+ git reset --hard &&
+ git checkout E^0 &&
+ git config core.commentchar "\\" &&
+ test_when_finished "git config --unset core.commentchar" &&
+ write_script remove-all-but-first.sh <<-\EOF &&
+ sed -e "2,\$s/^/\\\\/" "$1" >"$1.tmp" &&
+ mv "$1.tmp" "$1"
+ EOF
+ test_set_editor "$(pwd)/remove-all-but-first.sh" &&
+ git rebase -i B &&
+ test B = $(git cat-file commit HEAD^ | sed -ne \$p)
+'
+
test_done