Merge branch 'ab/portable-more'

Portability fix.

* ab/portable-more:
  tests: fix non-portable iconv invocation
  tests: fix non-portable "${var:-"str"}" construct
  tests: fix and add lint for non-portable grep --file
  tests: fix version-specific portability issue in Perl JSON
  tests: use shorter labels in chainlint.sed for AIX sed
  tests: fix comment syntax in chainlint.sed for AIX sed
  tests: fix and add lint for non-portable seq
  tests: fix and add lint for non-portable head -c N

10 files changed, 53 insertions, 44 deletions

diff --git a/t/chainlint.sed b/t/chainlint.sed
index 8544df38df..c80d2fad7a 100644
--- a/t/chainlint.sed
+++ b/t/chainlint.sed
@@ -97,11 +97,11 @@
 /<<[ 	]*[-\\']*[A-Za-z0-9_]/ {
 	s/^\(.*\)<<[ 	]*[-\\']*\([A-Za-z0-9_][A-Za-z0-9_]*\)'*/<\2>\1<</
 	s/[ 	]*<<//
-	:hereslurp
+	:hered
 	N
 	/^<\([^>]*\)>.*\n[ 	]*\1[ 	]*$/!{
 		s/\n.*$//
-		bhereslurp
+		bhered
 	}
 	s/^<[^>]*>//
 	s/\n.*$//
@@ -131,9 +131,8 @@ b
 b
 
 :subshell
-# bare "(" line?
+# bare "(" line? -- stash for later printing
 /^[ 	]*([	]*$/ {
-	# stash for later printing
 	h
 	bnextline
 }
@@ -150,7 +149,7 @@ s/.*\n//
 
 :slurp
 # incomplete line "...\"
-/\\$/bincomplete
+/\\$/bicmplte
 # multi-line quoted string "...\n..."?
 /"/bdqstring
 # multi-line quoted string '...\n...'? (but not contraction in string "it's")
@@ -172,7 +171,7 @@ s/.*\n//
 	/"[^"]*#[^"]*"/!s/[ 	]#.*$//
 }
 # one-liner "case ... esac"
-/^[ 	]*case[ 	]*..*esac/bcheckchain
+/^[ 	]*case[ 	]*..*esac/bchkchn
 # multi-line "case ... esac"
 /^[ 	]*case[ 	]..*[ 	]in/bcase
 # multi-line "for ... done" or "while ... done"
@@ -201,32 +200,32 @@ s/.*\n//
 /^[ 	]*fi[ 	]*[<>|]/bdone
 /^[ 	]*fi[ 	]*)/bdone
 # nested one-liner "(...) &&"
-/^[ 	]*(.*)[ 	]*&&[ 	]*$/bcheckchain
+/^[ 	]*(.*)[ 	]*&&[ 	]*$/bchkchn
 # nested one-liner "(...)"
-/^[ 	]*(.*)[ 	]*$/bcheckchain
+/^[ 	]*(.*)[ 	]*$/bchkchn
 # nested one-liner "(...) >x" (or "2>x" or "<x" or "|x")
-/^[ 	]*(.*)[ 	]*[0-9]*[<>|]/bcheckchain
+/^[ 	]*(.*)[ 	]*[0-9]*[<>|]/bchkchn
 # nested multi-line "(...\n...)"
 /^[ 	]*(/bnest
 # multi-line "{...\n...}"
 /^[ 	]*{/bblock
 # closing ")" on own line -- exit subshell
-/^[ 	]*)/bclosesolo
+/^[ 	]*)/bclssolo
 # "$((...))" -- arithmetic expansion; not closing ")"
-/\$(([^)][^)]*))[^)]*$/bcheckchain
+/\$(([^)][^)]*))[^)]*$/bchkchn
 # "$(...)" -- command substitution; not closing ")"
-/\$([^)][^)]*)[^)]*$/bcheckchain
+/\$([^)][^)]*)[^)]*$/bchkchn
 # multi-line "$(...\n...)" -- command substitution; treat as nested subshell
 /\$([^)]*$/bnest
 # "=(...)" -- Bash array assignment; not closing ")"
-/=(/bcheckchain
+/=(/bchkchn
 # closing "...) &&"
 /)[ 	]*&&[ 	]*$/bclose
 # closing "...)"
 /)[ 	]*$/bclose
 # closing "...) >x" (or "2>x" or "<x" or "|x")
 /)[ 	]*[<>|]/bclose
-:checkchain
+:chkchn
 # mark suspect if line uses ";" internally rather than "&&" (but not ";" in a
 # string and not ";;" in one-liner "case...esac")
 /;/{
@@ -245,7 +244,7 @@ n
 bslurp
 
 # found incomplete line "...\" -- slurp up next line
-:incomplete
+:icmplte
 N
 s/\\\n//
 bslurp
@@ -283,11 +282,11 @@ bfolded
 :heredoc
 s/^\(.*\)<<[ 	]*[-\\']*\([A-Za-z0-9_][A-Za-z0-9_]*\)'*/<\2>\1<</
 s/[ 	]*<<//
-:hereslurpsub
+:heredsub
 N
 /^<\([^>]*\)>.*\n[ 	]*\1[ 	]*$/!{
 	s/\n.*$//
-	bhereslurpsub
+	bheredsub
 }
 s/^<[^>]*>//
 s/\n.*$//
@@ -317,43 +316,43 @@ x
 # is 'done' or 'fi' cuddled with ")" to close subshell?
 /done.*)/bclose
 /fi.*)/bclose
-bcheckchain
+bchkchn
 
 # found nested multi-line "(...\n...)" -- pass through untouched
 :nest
 x
-:nestslurp
+:nstslurp
 n
 # closing ")" on own line -- stop nested slurp
-/^[ 	]*)/bnestclose
+/^[ 	]*)/bnstclose
 # comment -- not closing ")" if in comment
-/^[ 	]*#/bnestcontinue
+/^[ 	]*#/bnstcnt
 # "$((...))" -- arithmetic expansion; not closing ")"
-/\$(([^)][^)]*))[^)]*$/bnestcontinue
+/\$(([^)][^)]*))[^)]*$/bnstcnt
 # "$(...)" -- command substitution; not closing ")"
-/\$([^)][^)]*)[^)]*$/bnestcontinue
+/\$([^)][^)]*)[^)]*$/bnstcnt
 # closing "...)" -- stop nested slurp
-/)/bnestclose
-:nestcontinue
+/)/bnstclose
+:nstcnt
 x
-bnestslurp
-:nestclose
+bnstslurp
+:nstclose
 s/^/>>/
 # is it "))" which closes nested and parent subshells?
 /)[ 	]*)/bslurp
-bcheckchain
+bchkchn
 
 # found multi-line "{...\n...}" block -- pass through untouched
 :block
 x
 n
 # closing "}" -- stop block slurp
-/}/bcheckchain
+/}/bchkchn
 bblock
 
 # found closing ")" on own line -- drop "suspect" from final line of subshell
 # since that line legitimately lacks "&&" and exit subshell loop
-:closesolo
+:clssolo
 x
 s/?!AMP?!//
 p
diff --git a/t/check-non-portable-shell.pl b/t/check-non-portable-shell.pl
index d5823f71d8..b45bdac688 100755
--- a/t/check-non-portable-shell.pl
+++ b/t/check-non-portable-shell.pl
@@ -41,6 +41,9 @@ while (<>) {
 	/^\s*[^#]\s*which\s/ and err 'which is not portable (use type)';
 	/\btest\s+[^=]*==/ and err '"test a == b" is not portable (use =)';
 	/\bwc -l.*"\s*=/ and err '`"$(wc -l)"` is not portable (use test_line_count)';
+	/\bhead\s+-c\b/ and err 'head -c is not portable (use test_copy_bytes BYTES <file >out)';
+	/(?:\$\(seq|^\s*seq\b)/ and err 'seq is not portable (use test_seq)';
+	/\bgrep\b.*--file\b/ and err 'grep --file FILE is not portable (use grep -f FILE)';
 	/\bexport\s+[A-Za-z0-9_]*=/ and err '"export FOO=bar" is not portable (use FOO=bar && export FOO)';
 	/^\s*([A-Z0-9_]+=(\w+|(["']).*?\3)\s+)+(\w+)/ and exists($func{$4}) and
 		err '"FOO=bar shell_func" assignment extends beyond "shell_func"';
diff --git a/t/t0019/parse_json.perl b/t/t0019/parse_json.perl
index ca4e5bfa78..fea87fb81b 100644
--- a/t/t0019/parse_json.perl
+++ b/t/t0019/parse_json.perl
@@ -34,6 +34,9 @@ sub dump_item {
     } elsif (ref($value) eq 'HASH') {
 	print "$label_in hash\n";
 	dump_hash($label_in, $value);
+    } elsif (ref $value) {
+	my $bool = $value ? 1 : 0;
+	print "$label_in $bool\n";
     } elsif (defined $value) {
 	print "$label_in $value\n";
     } else {
diff --git a/t/t0028-working-tree-encoding.sh b/t/t0028-working-tree-encoding.sh
index 12b8eb963a..7e87b5a200 100755
--- a/t/t0028-working-tree-encoding.sh
+++ b/t/t0028-working-tree-encoding.sh
@@ -203,7 +203,11 @@ test_expect_success 'error if encoding garbage is already in Git' '
 	test_i18ngrep "error: BOM is required" err.out
 '
 
-test_expect_success 'check roundtrip encoding' '
+test_lazy_prereq ICONV_SHIFT_JIS '
+	iconv -f UTF-8 -t SHIFT-JIS </dev/null
+'
+
+test_expect_success ICONV_SHIFT_JIS 'check roundtrip encoding' '
 	test_when_finished "rm -f roundtrip.shift roundtrip.utf16" &&
 	test_when_finished "git reset --hard HEAD" &&
 
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index f8d853595b..73f7038253 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -140,7 +140,7 @@ do
 	expect="$TEST_DIRECTORY/t4013/diff.$test"
 	actual="$pfx-diff.$test"
 
-	test_expect_success "git $cmd # magic is ${magic:-"(not used)"}" '
+	test_expect_success "git $cmd # magic is ${magic:-(not used)}" '
 		{
 			echo "$ git $cmd"
 			case "$magic" in
diff --git a/t/t5310-pack-bitmaps.sh b/t/t5310-pack-bitmaps.sh
index 557bd0d0c0..7bff7923f2 100755
--- a/t/t5310-pack-bitmaps.sh
+++ b/t/t5310-pack-bitmaps.sh
@@ -335,7 +335,7 @@ test_expect_success 'truncated bitmap fails gracefully' '
 	git rev-list --use-bitmap-index --count --all >expect &&
 	bitmap=$(ls .git/objects/pack/*.bitmap) &&
 	test_when_finished "rm -f $bitmap" &&
-	head -c 512 <$bitmap >$bitmap.tmp &&
+	test_copy_bytes 512 <$bitmap >$bitmap.tmp &&
 	mv -f $bitmap.tmp $bitmap &&
 	git rev-list --use-bitmap-index --count --all >actual 2>stderr &&
 	test_cmp expect actual &&
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
index 3c1ffad491..0c500f7ca2 100755
--- a/t/t5318-commit-graph.sh
+++ b/t/t5318-commit-graph.sh
@@ -134,7 +134,7 @@ test_expect_success 'Add one more commit' '
 	git branch commits/8 &&
 	ls $objdir/pack | grep idx >existing-idx &&
 	git repack &&
-	ls $objdir/pack| grep idx | grep -v --file=existing-idx >new-idx
+	ls $objdir/pack| grep idx | grep -v -f existing-idx >new-idx
 '
 
 # Current graph structure:
diff --git a/t/t5552-skipping-fetch-negotiator.sh b/t/t5552-skipping-fetch-negotiator.sh
index 5ad5bece55..30857b84a8 100755
--- a/t/t5552-skipping-fetch-negotiator.sh
+++ b/t/t5552-skipping-fetch-negotiator.sh
@@ -46,7 +46,7 @@ test_expect_success 'commits with no parents are sent regardless of skip distanc
 	test_commit -C server to_fetch &&
 
 	git init client &&
-	for i in $(seq 7)
+	for i in $(test_seq 7)
 	do
 		test_commit -C client c$i
 	done &&
@@ -89,7 +89,7 @@ test_expect_success 'when two skips collide, favor the larger one' '
 	test_commit -C server to_fetch &&
 
 	git init client &&
-	for i in $(seq 11)
+	for i in $(test_seq 11)
 	do
 		test_commit -C client c$i
 	done &&
@@ -168,14 +168,14 @@ test_expect_success 'do not send "have" with ancestors of commits that server AC
 	test_commit -C server to_fetch &&
 
 	git init client &&
-	for i in $(seq 8)
+	for i in $(test_seq 8)
 	do
 		git -C client checkout --orphan b$i &&
 		test_commit -C client b$i.c0
 	done &&
-	for j in $(seq 19)
+	for j in $(test_seq 19)
 	do
-		for i in $(seq 8)
+		for i in $(test_seq 8)
 		do
 			git -C client checkout b$i &&
 			test_commit -C client b$i.c$j
@@ -205,7 +205,7 @@ test_expect_success 'do not send "have" with ancestors of commits that server AC
 
 	# fetch-pack should thus not send any more commits in the b1 branch, but
 	# should still send the others (in this test, just check b2).
-	for i in $(seq 0 8)
+	for i in $(test_seq 0 8)
 	do
 		have_not_sent b1.c$i
 	done &&
diff --git a/t/t5703-upload-pack-ref-in-want.sh b/t/t5703-upload-pack-ref-in-want.sh
index a73c55a47e..d1ccc22331 100755
--- a/t/t5703-upload-pack-ref-in-want.sh
+++ b/t/t5703-upload-pack-ref-in-want.sh
@@ -176,7 +176,7 @@ test_expect_success 'setup repos for change-while-negotiating test' '
 		git clone "http://127.0.0.1:$LIB_HTTPD_PORT/smart/repo" "$LOCAL_PRISTINE" &&
 		cd "$LOCAL_PRISTINE" &&
 		git checkout -b side &&
-		for i in $(seq 1 33); do test_commit s$i; done &&
+		for i in $(test_seq 1 33); do test_commit s$i; done &&
 
 		# Add novel commits to upstream
 		git checkout master &&
@@ -289,7 +289,7 @@ test_expect_success 'setup repos for fetching with ref-in-want tests' '
 		git clone "file://$REPO" "$LOCAL_PRISTINE" &&
 		cd "$LOCAL_PRISTINE" &&
 		git checkout -b side &&
-		for i in $(seq 1 33); do test_commit s$i; done &&
+		for i in $(test_seq 1 33); do test_commit s$i; done &&
 
 		# Add novel commits to upstream
 		git checkout master &&
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 8bb0f4348e..44288cbb59 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -867,7 +867,7 @@ then
 		# handle only executables, unless they are shell libraries that
 		# need to be in the exec-path.
 		test -x "$1" ||
-		test "# " = "$(head -c 2 <"$1")" ||
+		test "# " = "$(test_copy_bytes 2 <"$1")" ||
 		return;
 
 		base=$(basename "$1")
@@ -882,7 +882,7 @@ then
 		# do not override scripts
 		if test -x "$symlink_target" &&
 		    test ! -d "$symlink_target" &&
-		    test "#!" != "$(head -c 2 < "$symlink_target")"
+		    test "#!" != "$(test_copy_bytes 2 <"$symlink_target")"
 		then
 			symlink_target=../valgrind.sh
 		fi