Match named force_quotes fields against symbol headers - #370
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Summary
Normalize symbol headers only while resolving named quote fields. Preserve string headers, nil/numeric header behavior, integer indexes and first-match selection for duplicates.
Reproduction
CSV.generate_line([1, 2], headers: %w[a b], header_converters: :symbol, force_quotes: [:a])returns"1,2\n"rather than quoting the first field.Verification
12 focused checks pass, including six previously failing named-field cases and nil/numeric/index/duplicate controls.
This isolated patch passes the unchanged upstream suite in both normal and
CSV_PARSER_SCANNER_TEST=yesmodes: 527 tests / 4,050 assertions in each mode, zero failures/errors. Commands use Ruby 4.0.6 through rbenv (bundle exec ruby run-test.rb). Syntax andgit diff --checkpass. The combined release-based consumer branch also passes gem build andrake warning:error rdoc.No tests were added or changed, per the requesting project's explicit no-new-tests policy. Focused checks and measurements live outside this repository. The upstream no-RuboCop policy is respected. Verification was local on macOS/Ruby 4.0.6; the supported OS/Ruby matrix was not run locally. Current main and installed 3.3.6 share base commit
0873ab362d996f12796c3c3e8998b5be657a9b12; no unrelated changes are included.Breaking changes and limitations
Named force_quotes fields now work with symbol headers, producing the explicitly requested quotes. Parsed values, ordinary string headers and default output are unchanged.