Merge branch 'es/test-lint-one-shot-export'

Look for broken use of "VAR=VAL shell_func" in test scripts as part
of test-lint.

* es/test-lint-one-shot-export:
  t/check-non-portable-shell: detect "FOO=bar shell_func"
  t/check-non-portable-shell: make error messages more compact
  t/check-non-portable-shell: stop being so polite
  t6046/t9833: fix use of "VAR=VAL cmd" with a shell function

Author: gitster

t/check-non-portable-shell.pl

@@ -7,22 +7,43 @@
 use warnings;
 
 my $exit_code=0;
+my %func;
 
 sub err {
 	my $msg = shift;
+	s/^\s+//;
+	s/\s+$//;
+	s/\s+/ /g;
 	print "$ARGV:$.: error: $msg: $_\n";
 	$exit_code = 1;
 }
 
+# glean names of shell functions
+for my $i (@ARGV) {
+	open(my $f, '<', $i) or die "$0: $i: $!\n";
+	while (<$f>) {
+		$func{$1} = 1 if /^\s*(\w+)\s*\(\)\s*{\s*$/;
+	}
+	close $f;
+}
+
 while (<>) {
 	chomp;
+	# stitch together incomplete lines (those ending with "\")
+	while (s/\\$//) {
+		$_ .= readline;
+		chomp;
+	}
+
 	/\bsed\s+-i/ and err 'sed -i is not portable';
-	/\becho\s+-[neE]/ and err 'echo with option is not portable (please use printf)';
+	/\becho\s+-[neE]/ and err 'echo with option is not portable (use printf)';
 	/^\s*declare\s+/ and err 'arrays/declare not portable';
-	/^\s*[^#]\s*which\s/ and err 'which is not portable (please use type)';
-	/\btest\s+[^=]*==/ and err '"test a == b" is not portable (please use =)';
-	/\bwc -l.*"\s*=/ and err '`"$(wc -l)"` is not portable (please use test_line_count)';
-	/\bexport\s+[A-Za-z0-9_]*=/ and err '"export FOO=bar" is not portable (please use FOO=bar && export FOO)';
+	/^\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 '`"$(wc -l)"` is not portable (use test_line_count)';
+	/\bexport\s+[A-Za-z0-9_]*=/ and err '"export FOO=bar" is not portable (use FOO=bar && export FOO)';
+	/^\s*([A-Z0-9_]+=(\w+|(["']).*?\3)\s+)+(\w+)/ and exists($func{$4}) and
+		err '"FOO=bar shell_func" assignment extends beyond "shell_func"';
 	# this resets our $. for each file
 	close ARGV if eof;
 }

t/t6046-merge-skip-unneeded-updates.sh

@@ -366,7 +366,9 @@ test_expect_success '2c-check: Modify b & add c VS rename b->c' '
 
 		git checkout A^0 &&
 
-		GIT_MERGE_VERBOSITY=3 test_must_fail git merge -s recursive B^0 >out 2>err &&
+		GIT_MERGE_VERBOSITY=3 &&
+		export GIT_MERGE_VERBOSITY &&
+		test_must_fail git merge -s recursive B^0 >out 2>err &&
 
 		test_i18ngrep "CONFLICT (rename/add): Rename b->c" out &&
 		test_i18ngrep ! "Skipped c" out &&

t/t9833-errors.sh

@@ -26,7 +26,9 @@ test_expect_success 'error handling' '
 	) &&
 	p4 passwd -P newpassword &&
 	(
-		P4PASSWD=badpassword test_must_fail git p4 clone //depot/foo 2>errmsg &&
+		P4PASSWD=badpassword &&
+		export P4PASSWD &&
+		test_must_fail git p4 clone //depot/foo 2>errmsg &&
 		grep -q "failure accessing depot.*P4PASSWD" errmsg
 	)
 '