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The test suite has been updated to use the 'test_grep' helper instead
of bare 'grep' for test assertions, allowing file contents to be
printed on failure for easier debugging. A new 'greplint' linter has
been introduced to detect and prevent new bare 'grep' assertions from
being added to the test suite.
* mm/test-grep-lint:
t: add greplint to detect bare grep assertions
t: convert grep assertions to test_grep
t: fix Lexer line count for $() inside double-quoted strings
t: extract chainlint's parser into shared module
t: fix grep assertions missing file arguments
t/README: document test_grep helper
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scan_dqstring's post-loop newline counter re-counts newlines that
were already counted during recursive parsing of $() bodies. This
happens because scan_dollar returns text containing newlines (from
multi-line command substitutions), and the catch-all counter at the
end of scan_dqstring counts all of them again.
Fix this by counting newlines inline as non-special characters are
consumed, and removing the post-loop catch-all. Each newline is
now counted exactly once: literal newlines at the inline match,
line splices at the backslash handler, and $() newlines by
scan_token during the recursive parse.
This is a latent bug: any consumer that relies on token line
numbers rather than byte offsets would get incorrect results for
tokens following a multi-line $() inside a double-quoted string.
chainlint is not affected because it annotates the original body
text using byte offsets, not token line numbers.
Signed-off-by: Michael Montalbo <mmontalbo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move chainlint.pl's Lexer, ShellParser, and ScriptParser into a
shared module (lib-shell-parser.pl) so other lint tools can reuse
the same shell parsing infrastructure. A subsequent commit adds
greplint.pl, which needs the same tokenizer to correctly identify
command boundaries.
ScriptParser's check_test() becomes a no-op in the shared module.
chainlint.pl defines ChainlintParser (extending ScriptParser)
with the &&-chain check_test() implementation.
No functional change: chainlint produces the same output and
check-chainlint self-tests pass.
Signed-off-by: Michael Montalbo <mmontalbo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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