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      #!/bin/sh
test_description='assert (unbuilt) Documentation/*.adoc and -h output
Run this with --debug to see a summary of where we still fail to make
the two versions consistent with one another.'
. ./test-lib.sh
test_expect_success 'setup: list of builtins' '
	git --list-cmds=builtins >builtins
'
test_expect_success 'list of adoc and help mismatches is sorted' '
	sort -u "$TEST_DIRECTORY"/t0450/adoc-help-mismatches >expect &&
	if ! test_cmp expect "$TEST_DIRECTORY"/t0450/adoc-help-mismatches
	then
		BUG "please keep the list of adoc and help mismatches sorted"
	fi
'
help_to_synopsis () {
	builtin="$1" &&
	out_dir="out/$builtin" &&
	out="$out_dir/help.synopsis" &&
	if test -f "$out"
	then
		echo "$out" &&
		return 0
	fi &&
	mkdir -p "$out_dir" &&
	test_expect_code 129 git $builtin -h >"$out.raw" 2>&1 &&
	sed -n \
		-e '1,/^$/ {
			/^$/d;
			s/^usage: //;
			s/^ *or: //;
			p;
		}' <"$out.raw" >"$out" &&
	echo "$out"
}
builtin_to_adoc () {
       echo "$GIT_BUILD_DIR/Documentation/git-$1.adoc"
}
adoc_to_synopsis () {
	builtin="$1" &&
	out_dir="out/$builtin" &&
	out="$out_dir/adoc.synopsis" &&
	if test -f "$out"
	then
		echo "$out" &&
		return 0
	fi &&
	b2t="$(builtin_to_adoc "$builtin")" &&
	sed -n \
		-E '/^\[(verse|synopsis)\]$/,/^$/ {
			/^$/d;
			/^\[(verse|synopsis)\]$/d;
			s/\{litdd\}/--/g;
			s/'\''(git[ a-z-]*)'\''/\1/g;
			p;
		}' \
		<"$b2t" >"$out" &&
	echo "$out"
}
check_dashed_labels () {
	! grep -E "<[^>_-]+_" "$1"
}
HT="	"
align_after_nl () {
	builtin="$1" &&
	len=$(printf "git %s " "$builtin" | wc -c) &&
	pad=$(printf "%${len}s" "") &&
	sed "s/^[ $HT][ $HT]*/$pad/"
}
test_debug '>failing'
while read builtin
do
	# -h output assertions
	test_expect_success "$builtin -h output has no \t" '
		h2s="$(help_to_synopsis "$builtin")" &&
		! grep "$HT" "$h2s"
	'
	test_expect_success "$builtin -h output has dashed labels" '
		check_dashed_labels "$(help_to_synopsis "$builtin")"
	'
	test_expect_success "$builtin -h output has consistent spacing" '
		h2s="$(help_to_synopsis "$builtin")" &&
		sed -n \
			-e "/^ / {
				s/[^ ].*//;
				p;
			}" \
			<"$h2s" >help &&
		sort -u help >help.ws &&
		if test -s help.ws
		then
			test_line_count = 1 help.ws
		fi
	'
	adoc="$(builtin_to_adoc "$builtin")" &&
	preq="$(echo BUILTIN_ADOC_$builtin | tr '[:lower:]-' '[:upper:]_')" &&
	if test -f "$adoc"
	then
		test_set_prereq "$preq"
	fi &&
	# *.adoc output assertions
	test_expect_success "$preq" "$builtin *.adoc SYNOPSIS has dashed labels" '
		check_dashed_labels "$(adoc_to_synopsis "$builtin")"
	'
	# *.adoc output consistency assertions
	result=
	if grep -q "^$builtin$" "$TEST_DIRECTORY"/t0450/adoc-help-mismatches
	then
		result=failure
	else
		result=success
	fi &&
	test_expect_$result "$preq" "$builtin -h output and SYNOPSIS agree" '
		t2s="$(adoc_to_synopsis "$builtin")" &&
		if test "$builtin" = "merge-tree"
		then
			test_when_finished "rm -f t2s.new" &&
			sed -e '\''s/ (deprecated)$//g'\'' <"$t2s" >t2s.new
			t2s=t2s.new
		fi &&
		h2s="$(help_to_synopsis "$builtin")" &&
		# The *.adoc and -h use different spacing for the
		# alignment of continued usage output, normalize it.
		align_after_nl "$builtin" <"$t2s" >adoc &&
		align_after_nl "$builtin" <"$h2s" >help &&
		test_cmp adoc help
	'
	if test_have_prereq "$preq" && test -e adoc && test -e help
	then
		test_debug '
			if test_cmp adoc help >cmp 2>/dev/null
			then
				echo "=== DONE: $builtin ==="
			else
				echo "=== TODO: $builtin ===" &&
				cat cmp
			fi >>failing
		'
		# Not in test_expect_success in case --run is being
		# used with --debug
		rm -f adoc help tmp 2>/dev/null
	fi
done <builtins
test_debug 'say "$(cat failing)"'
test_done
 
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