This is a re-roll of [1] which improves chainlint's robustness in the face of unusual shell coding such as in contrib/subtree/t7900 which triggered a false-positive[2].
Changes since v2: * recognize "quoted" here-doc tag names (in addition to 'quoted' and \escaped) Interdiff below. [1]: https://public-inbox.org/git/20180813084739.16134-1-sunsh...@sunshineco.com/ [2]: https://public-inbox.org/git/20180730181356.ga156...@aiede.svl.corp.google.com/ Eric Sunshine (6): chainlint: match arbitrary here-docs tags rather than hard-coded names chainlint: match quoted here-doc tags chainlint: recognize multi-line $(...) when command cuddled with "$(" chainlint: let here-doc and multi-line string commence on same line chainlint: recognize multi-line quoted strings more robustly chainlint: add test of pathological case which triggered false positive t/chainlint.sed | 98 ++++++++++++------- t/chainlint/here-doc-close-subshell.expect | 2 + t/chainlint/here-doc-close-subshell.test | 5 + .../here-doc-multi-line-command-subst.expect | 5 + .../here-doc-multi-line-command-subst.test | 9 ++ t/chainlint/here-doc-multi-line-string.expect | 4 + t/chainlint/here-doc-multi-line-string.test | 8 ++ t/chainlint/here-doc.expect | 6 ++ t/chainlint/here-doc.test | 21 ++++ ...ti-line-nested-command-substitution.expect | 11 ++- ...ulti-line-nested-command-substitution.test | 11 ++- t/chainlint/multi-line-string.expect | 10 +- t/chainlint/multi-line-string.test | 12 +++ t/chainlint/nested-here-doc.expect | 2 + t/chainlint/nested-here-doc.test | 10 ++ t/chainlint/subshell-here-doc.expect | 6 ++ t/chainlint/subshell-here-doc.test | 16 +++ t/chainlint/t7900-subtree.expect | 10 ++ t/chainlint/t7900-subtree.test | 22 +++++ 19 files changed, 227 insertions(+), 41 deletions(-) create mode 100644 t/chainlint/here-doc-close-subshell.expect create mode 100644 t/chainlint/here-doc-close-subshell.test create mode 100644 t/chainlint/here-doc-multi-line-command-subst.expect create mode 100644 t/chainlint/here-doc-multi-line-command-subst.test create mode 100644 t/chainlint/here-doc-multi-line-string.expect create mode 100644 t/chainlint/here-doc-multi-line-string.test create mode 100644 t/chainlint/t7900-subtree.expect create mode 100644 t/chainlint/t7900-subtree.test Interdiff against v2: diff --git a/t/chainlint.sed b/t/chainlint.sed index 8544df38df..1da58b554b 100644 --- a/t/chainlint.sed +++ b/t/chainlint.sed @@ -94,8 +94,8 @@ # here-doc -- swallow it to avoid false hits within its body (but keep the # command to which it was attached) -/<<[ ]*[-\\']*[A-Za-z0-9_]/ { - s/^\(.*\)<<[ ]*[-\\']*\([A-Za-z0-9_][A-Za-z0-9_]*\)'*/<\2>\1<</ +/<<[ ]*[-\\'"]*[A-Za-z0-9_]/ { + s/^\(.*\)<<[ ]*[-\\'"]*\([A-Za-z0-9_][A-Za-z0-9_]*\)['"]*/<\2>\1<</ s/[ ]*<<// :hereslurp N @@ -159,7 +159,7 @@ s/.*\n// } :folded # here-doc -- swallow it -/<<[ ]*[-\\']*[A-Za-z0-9_]/bheredoc +/<<[ ]*[-\\'"]*[A-Za-z0-9_]/bheredoc # comment or empty line -- discard since final non-comment, non-empty line # before closing ")", "done", "elsif", "else", or "fi" will need to be # re-visited to drop "suspect" marking since final line of those constructs @@ -281,7 +281,7 @@ bfolded # found here-doc -- swallow it to avoid false hits within its body (but keep # the command to which it was attached) :heredoc -s/^\(.*\)<<[ ]*[-\\']*\([A-Za-z0-9_][A-Za-z0-9_]*\)'*/<\2>\1<</ +s/^\(.*\)<<[ ]*[-\\'"]*\([A-Za-z0-9_][A-Za-z0-9_]*\)['"]*/<\2>\1<</ s/[ ]*<<// :hereslurpsub N diff --git a/t/chainlint/here-doc.expect b/t/chainlint/here-doc.expect index aff6568716..534b065e38 100644 --- a/t/chainlint/here-doc.expect +++ b/t/chainlint/here-doc.expect @@ -4,4 +4,6 @@ cat >foo && cat >bar && +cat >boo && + horticulture diff --git a/t/chainlint/here-doc.test b/t/chainlint/here-doc.test index f2bb14b693..ad4ce8afd9 100644 --- a/t/chainlint/here-doc.test +++ b/t/chainlint/here-doc.test @@ -21,6 +21,13 @@ boz woz FUMP +# LINT: swallow "quoted" here-doc +cat <<"zump" >boo && +snoz +boz +woz +zump + # LINT: swallow here-doc (EOF is last line of test) horticulture <<\EOF gomez diff --git a/t/chainlint/subshell-here-doc.expect b/t/chainlint/subshell-here-doc.expect index 7663ea7fc4..74723e7340 100644 --- a/t/chainlint/subshell-here-doc.expect +++ b/t/chainlint/subshell-here-doc.expect @@ -6,5 +6,6 @@ ( cat >bup && cat >bup2 && + cat >bup3 && meep >) diff --git a/t/chainlint/subshell-here-doc.test b/t/chainlint/subshell-here-doc.test index b6b5a9b33a..f6b3ba4214 100644 --- a/t/chainlint/subshell-here-doc.test +++ b/t/chainlint/subshell-here-doc.test @@ -31,6 +31,9 @@ glink FIZZ ARBITRARY2 + cat <<-"ARBITRARY3" >bup3 && + glink + FIZZ + ARBITRARY3 meep ) -- 2.18.0.267.gbc8be36ecb
