chainlint.pl: don't flag broken &&-chain if `$?` handled explicitly
There are cases in which tests capture and check a command's exit code explicitly without employing test_expect_code(). They do so by intentionally breaking the &&-chain since it would be impossible to capture "$?" in the failing case if the `status=$?` assignment was part of the &&-chain. Since such constructs are manually checking the exit code, their &&-chain breakage is legitimate and safe, thus should not be flagged. Therefore, stop flagging &&-chain breakage in such cases. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Eric Sunshine committed
Sep 1, 2022 at 00:29 UTC
a8f30ee0502b89ecb660af36784f653a8c3fb20d
3 files changed
+26
t/chainlint.pl
+6
index ba3fcb0c8e..14e1db3519 100755
--- a/t/chainlint.pl
+++ b/t/chainlint.pl
@@ -497,6 +497,12 @@ sub accumulate {
# did previous command end with "&&", "|", "|| return" or similar?
goto DONE if match_ending($tokens, \@safe_endings);
+ # if this command handles "$?" specially, then okay for previous
+ # command to be missing "&&"
+ for my $token (@$cmd) {
+ goto DONE if $token =~ /\$\?/;
+ }
+
# flag missing "&&" at end of previous command
my $n = find_non_nl($tokens);
splice(@$tokens, $n + 1, 0, '?!AMP?!') unless $n < 0;
t/chainlint/chain-break-status.expect
+9
new file mode 100644
index 0000000000..f4bada9463
--- /dev/null
+++ b/t/chainlint/chain-break-status.expect
@@ -0,0 +1,9 @@
+OUT=$(( ( large_git ; echo $? 1 >& 3 ) | : ) 3 >& 1) &&
+test_match_signal 13 "$OUT" &&
+
+{ test-tool sigchain > actual ; ret=$? ; } &&
+{
+ test_match_signal 15 "$ret" ||
+ test "$ret" = 3
+} &&
+test_cmp expect actual
t/chainlint/chain-break-status.test
+11
new file mode 100644
index 0000000000..a6602a7b99
--- /dev/null
+++ b/t/chainlint/chain-break-status.test
@@ -0,0 +1,11 @@
+# LINT: broken &&-chain okay if next command handles "$?" explicitly
+OUT=$( ((large_git; echo $? 1>&3) | :) 3>&1 ) &&
+test_match_signal 13 "$OUT" &&
+
+# LINT: broken &&-chain okay if next command handles "$?" explicitly
+{ test-tool sigchain >actual; ret=$?; } &&
+{
+ test_match_signal 15 "$ret" ||
+ test "$ret" = 3
+} &&
+test_cmp expect actual