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github-spec-kit/tests
Noor ul ain a4d94309e0 fix(workflows): apply chained expression filters left-to-right (#3339)
* fix(workflows): apply chained expression filters left-to-right

The pipe-filter parser in `_evaluate_simple_expression` split the
expression only at the *first* top-level `|` and treated the whole
remainder as a single filter. So a filter chain like
`{{ inputs.rows | map('name') | join(', ') }}` handed
`map('name') | join(', ')` to one filter, where the `(\w+)\((.+)\)`
regex mangled it and raised `ValueError`.

This broke the canonical use of `map`: it returns a list, and `join`
is the only filter that renders a list to a string, so the two are
meant to be chained. Chaining was impossible for every registered
filter.

Split the pipe segments at the top level (quote/bracket aware, so a
literal `|` inside a quoted argument like `join(' | ')` is preserved)
and fold each filter over the running value. The single-filter logic
is extracted verbatim into `_apply_filter`, so all existing strict
handling (`from_json` arity, unsupported-form vs unknown-filter
messages) is unchanged and now applies to every link in the chain.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
2026-07-09 08:10:43 -05:00
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