[PATCH 08/15] chainlint.sed: tolerate harmless ";" at end of last line in block
From: Eric Sunshine <hidden>
Date: 2021-12-13 06:32:14
Subsystem:
the rest · Maintainer:
Linus Torvalds
chainlint.sed flags ";" when used as a command terminator since it
breaks the &&-chain, thus can allow failures to go undetected. However,
when a command terminated by ";" is the last command in the body of a
compound statement, such as `command-2` in:
if test $# -gt 1
then
command-1 &&
command-2;
fi
then the ";" is harmless and the exit code from `command-2` is passed
through untouched and becomes the exit code of the compound statement,
as if the ";" was not present. Therefore, tolerate a trailing ";" in
this position rather than complaining about broken &&-chain.
Signed-off-by: Eric Sunshine <redacted>
---
t/chainlint.sed | 11 ++++++-----
t/chainlint/semicolon.expect | 4 ++--
2 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/t/chainlint.sed b/t/chainlint.sed
index 60c2099c18..91077b6e26 100644
--- a/t/chainlint.sed
+++ b/t/chainlint.sed@@ -47,8 +47,9 @@ # "?!AMP?!" violation is removed from the "bar" line (retrieved from the "hold" # area) since the final statement of a subshell must not end with "&&". The # final line of a subshell may still break the &&-chain by using ";" internally -# to chain commands together rather than "&&", so "?!SEMI?!" is never removed -# from a line (even though "?!AMP?!" might be). +# to chain commands together rather than "&&", so "?!SEMI?!" is not removed +# from such a line; however, if the line ends with "?!SEMI?!", then the ";" is +# harmless and the annotation is removed. # # Care is taken to recognize the last _statement_ of a multi-line subshell, not # necessarily the last textual _line_ within the subshell, since &&-chaining
@@ -303,7 +304,7 @@ bcase # that line legitimately lacks "&&" :else x -s/ ?!AMP?!$// +s/\( ?!SEMI?!\)* ?!AMP?!$// x bcont
@@ -311,7 +312,7 @@ bcont # "suspect" from final contained line since that line legitimately lacks "&&" :done x -s/ ?!AMP?!$// +s/\( ?!SEMI?!\)* ?!AMP?!$// x # is 'done' or 'fi' cuddled with ")" to close subshell? /done.*)/bclose
@@ -354,7 +355,7 @@ bblock # since that line legitimately lacks "&&" and exit subshell loop :clssolo x -s/ ?!AMP?!$// +s/\( ?!SEMI?!\)* ?!AMP?!$// p x s/^/>/
diff --git a/t/chainlint/semicolon.expect b/t/chainlint/semicolon.expect
index d2d804f5b0..0e6389f532 100644
--- a/t/chainlint/semicolon.expect
+++ b/t/chainlint/semicolon.expect@@ -11,10 +11,10 @@ cat foo; ?!SEMI?! echo bar >) && ( - foo; ?!SEMI?! + foo; >) && ( cd foo && for i in a b c; do - echo; ?!SEMI?! + echo; > done)
--
2.34.1.397.gfae76fe5da