revert(3p/git): Revert merge of git upstream at v2.26.2

This causes cgit to serve error pages, which is undesirable.

This reverts commit 5229c9b232, reversing
changes made to f2b211131f.

third_party/git/t/t7815-grep-binary.sh

@@ -1,148 +0,0 @@
-#!/bin/sh
-
-test_description='git grep in binary files'
-
-. ./test-lib.sh
-
-test_expect_success 'setup' "
-	echo 'binaryQfileQm[*]cQ*æQð' | q_to_nul >a &&
-	git add a &&
-	git commit -m.
-"
-
-test_expect_success 'git grep ina a' '
-	echo Binary file a matches >expect &&
-	git grep ina a >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'git grep -ah ina a' '
-	git grep -ah ina a >actual &&
-	test_cmp a actual
-'
-
-test_expect_success 'git grep -I ina a' '
-	test_must_fail git grep -I ina a >actual &&
-	test_must_be_empty actual
-'
-
-test_expect_success 'git grep -c ina a' '
-	echo a:1 >expect &&
-	git grep -c ina a >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'git grep -l ina a' '
-	echo a >expect &&
-	git grep -l ina a >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'git grep -L bar a' '
-	echo a >expect &&
-	git grep -L bar a >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'git grep -q ina a' '
-	git grep -q ina a >actual &&
-	test_must_be_empty actual
-'
-
-test_expect_success 'git grep -F ile a' '
-	git grep -F ile a
-'
-
-test_expect_success 'git grep -Fi iLE a' '
-	git grep -Fi iLE a
-'
-
-# This test actually passes on platforms where regexec() supports the
-# flag REG_STARTEND.
-test_expect_success 'git grep ile a' '
-	git grep ile a
-'
-
-test_expect_failure 'git grep .fi a' '
-	git grep .fi a
-'
-
-test_expect_success 'grep respects binary diff attribute' '
-	echo text >t &&
-	git add t &&
-	echo t:text >expect &&
-	git grep text t >actual &&
-	test_cmp expect actual &&
-	echo "t -diff" >.gitattributes &&
-	echo "Binary file t matches" >expect &&
-	git grep text t >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'grep --cached respects binary diff attribute' '
-	git grep --cached text t >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'grep --cached respects binary diff attribute (2)' '
-	git add .gitattributes &&
-	rm .gitattributes &&
-	git grep --cached text t >actual &&
-	test_when_finished "git rm --cached .gitattributes" &&
-	test_when_finished "git checkout .gitattributes" &&
-	test_cmp expect actual
-'
-
-test_expect_success 'grep revision respects binary diff attribute' '
-	git commit -m new &&
-	echo "Binary file HEAD:t matches" >expect &&
-	git grep text HEAD -- t >actual &&
-	test_when_finished "git reset HEAD^" &&
-	test_cmp expect actual
-'
-
-test_expect_success 'grep respects not-binary diff attribute' '
-	echo binQary | q_to_nul >b &&
-	git add b &&
-	echo "Binary file b matches" >expect &&
-	git grep bin b >actual &&
-	test_cmp expect actual &&
-	echo "b diff" >.gitattributes &&
-	echo "b:binQary" >expect &&
-	git grep bin b >actual.raw &&
-	nul_to_q <actual.raw >actual &&
-	test_cmp expect actual
-'
-
-cat >nul_to_q_textconv <<'EOF'
-#!/bin/sh
-"$PERL_PATH" -pe 'y/\000/Q/' < "$1"
-EOF
-chmod +x nul_to_q_textconv
-
-test_expect_success 'setup textconv filters' '
-	echo a diff=foo >.gitattributes &&
-	git config diff.foo.textconv "\"$(pwd)\""/nul_to_q_textconv
-'
-
-test_expect_success 'grep does not honor textconv' '
-	test_must_fail git grep Qfile
-'
-
-test_expect_success 'grep --textconv honors textconv' '
-	echo "a:binaryQfileQm[*]cQ*æQð" >expect &&
-	git grep --textconv Qfile >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'grep --no-textconv does not honor textconv' '
-	test_must_fail git grep --no-textconv Qfile
-'
-
-test_expect_success 'grep --textconv blob honors textconv' '
-	echo "HEAD:a:binaryQfileQm[*]cQ*æQð" >expect &&
-	git grep --textconv Qfile HEAD:a >actual &&
-	test_cmp expect actual
-'
-
-test_done