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ROLLOUT 3 · python-tap/tappy

python-tap__tappy-112

Solved
351 stotal time
11tool calls
13model calls
5,477tokens generated
107,827prompt tokens read

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⚠ The request log has 12 model calls but the trace has 14 agent calls, so tokens are listed separately instead of beside each turn.

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System instructions 4,822 characters
You are a principal Python software engineer resolving a repository issue in `/workspace`.
Your sole objective is to produce a minimal, root-cause source patch that passes every hidden fail-to-pass and pass-to-pass regression test on the first grading run.

## Critical Environment & Grader Rules
1. **Air-Gapped Sandbox & Available CLI Tools**: No network access. Never run `pip`, `uv`, `conda`, or `git fetch`. Note: `rg` (`ripgrep`) is NOT installed in the container — always use `grep -rn --include="*.py"` for fast exact searches so you never waste a tool call on `command not found`.
2. **Protected Grading Paths**: Before running official verification, the grading harness **strips and reverts all changes** to `tests/`, `test/`, `testing/`, `test_*.py`, `*_test.py`, `conftest.py`, `pyproject.toml`, `setup.cfg`, `pytest.ini`, and `tox.ini`. Every part of your fix MUST reside in non-test production source files.
3. **Untracked File Trap (`git add -N .`)**: `submit_patch` stages ALL untracked files inside `/workspace`! Never leave reproduction or scratch files inside `/workspace` — run reproductions inline via `python3 - <<'PY'` or inside `/tmp/repro.py` in a single `run_command`.
4. **Stdout Truncation Rule**: `run_command` truncates stdout after the first 5,000 characters from the TOP. Always run pytest quietly with short tracebacks:
   `pytest path/to/test_file.py -k pattern -q --tb=short --no-header`
   If a test file is large, redirect output to `/tmp/pytest.log` and inspect `tail -n 80 /tmp/pytest.log` so failure tracebacks at the bottom are never cut off.
5. **Strict Pacing Discipline**: `get_status` and `submit_patch` are free and do NOT count toward `max_tool_calls`. Target **16-22 counted tool calls total**, and **begin your first `edit_file` change no later than tool call 15**. Reserve at least 4 calls for verification, `git status --short && git diff`, and submission.

## Execution Protocol

### Phase 1 — Pinpoint Code & Tests Immediately (1-2 tool calls)
- The user message already contains `Workspace Layout` — do NOT waste a turn running `ls` on top-level directories.
- Run a single compound `run_command` with `grep -rn --include="*.py"` to locate:
  (a) the exact symbols, error strings, or functions from the problem description,
  (b) **all parallel or sibling implementations** (for example sync + async variants, `Client` + `AsyncClient`, serializer + deserializer, multiple backends/dialects, base + subclass methods, `__init__.py` / `__all__` exports), and
  (c) the closest existing unit test files under `tests/`.

### Phase 2 — Deep Read & Spec Anchor (2-5 tool calls)
- Use `read_file` with generous `start_line` and `end_line` windows (180-300 lines per call so you read whole modules in fewer calls) on the target function/class, callers, type annotations, and neighboring tests.
- Before editing, verify every explicit and implicit requirement from the issue: exact parameter names, defaults, boundary/domain edge cases, exception types/messages, `None` vs empty collection vs falsy (`0`, `False`, `""`) semantics, mutability/copying, and return types.

### Phase 3 — Reproduce Bug in One Call (1 tool call)
- Run ONE concise command (`python3 - <<'PY' ... PY` or targeted `pytest ... -q --tb=short --no-header`) via `run_command` to observe the exact pre-fix failure. Do NOT spend multiple tool calls writing separate reproduction scripts.

### Phase 4 — Surgical Implementation Across All Parallel Paths (1-4 tool calls)
- Begin editing by tool call 15! Use `edit_file` with 4-6 lines of exact surrounding context copied from `read_file`.
- Update ALL parallel codepaths (sync/async, multiple classes/dialects, type hints) consistently so partial fixes do not fail sibling tests.
- **2-Strike Edit Rule**: If `edit_file` fails twice on the same block due to whitespace or escaping, do not retry `edit_file` a third time — apply an atomic Python transformation via `run_command` and immediately verify `python3 -m py_compile path/to/file.py`.

### Phase 5 — Edge-Case Verification, Diff Hygiene & Clean Exit (2-4 tool calls)
- Run a single compound `run_command` testing both your reproduction + boundary edge cases (`None`, empty input, leading/trailing delimiters, subdomain/prefix boundaries, subclass/async parity) AND the relevant existing `pytest` module(s) with `-q --tb=short --no-header`.
- Run `git status --short && git diff` via `run_command`. Confirm:
  - ZERO untracked (`??`) files in `/workspace` (`rm -f` any untracked workspace files immediately),
  - ZERO modifications to `tests/` or protected config files (`git checkout -- tests/` if touched),
  - Minimal, clean diff with valid imports and indentation.
- Call `submit_patch` once verification passes, then respond with a brief 2-sentence plain-text summary and make NO further tool calls.
Task prompt 5,407 characters
You are evaluating a software engineering task for repository python-tap/tappy.

Problem Statement:
Additional newlines added in YAML blocks for multi-line strings
Hello!

I've observed that `_extract_yaml_block()` performs `"\n".join(raw_yaml)` without having stripped the newline character in each possible line, resulting in unwanted empty lines when parsing multi-line strings in YAML blocks.

I'll give an example. With this file:

```python
#!/usr/bin/python3

import tap.parser

tap_input = """TAP version 13
1..2
ok 1 A passing test
   ---
   message: test
   severity: fail
   output: |+
     this is a multiline
     string but with tap
     somehow blank lines
     are added to it.
"""
parser = tap.parser.Parser()

for i, l in enumerate(parser.parse_text(tap_input)):
    if i == 2:
        print("{!r}".format(l.yaml_block["output"].splitlines()))
```

The output is:

```
['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']
```

Where as I expected:

```
['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']
```

I will submit a PR shortly.

## Hints:
codecov-io: # [Codecov](https://codecov.io/gh/python-tap/tappy/pull/112?src=pr&el=h1) Report
> Merging [#112](https://codecov.io/gh/python-tap/tappy/pull/112?src=pr&el=desc) into [master](https://codecov.io/gh/python-tap/tappy/commit/015c21c1a98b88f23844a44e346604f2398b11d5&el=desc) will **not change** coverage.
> The diff coverage is `100.00%`.

[![Impacted file tree graph](https://codecov.io/gh/python-tap/tappy/pull/112/graphs/tree.svg?width=650&height=150&src=pr&token=ULVfoGuR2p)](https://codecov.io/gh/python-tap/tappy/pull/112?src=pr&el=tree)

```diff
@@            Coverage Diff            @@
##            master      #112   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           12        12           
  Lines          599       600    +1     
=========================================
+ Hits           599       600    +1     
```


| [Impacted Files](https://codecov.io/gh/python-tap/tappy/pull/112?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [tap/parser.py](https://codecov.io/gh/python-tap/tappy/pull/112/diff?src=pr&el=tree#diff-dGFwL3BhcnNlci5weQ==) | `100.00% <100.00%> (ø)` | |

------

[Continue to review full report at Codecov](https://codecov.io/gh/python-tap/tappy/pull/112?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/python-tap/tappy/pull/112?src=pr&el=footer). Last update [015c21c...05c6b82](https://codecov.io/gh/python-tap/tappy/pull/112?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

## Task Budget (Session terminates when any budget is exhausted)
- Time allowance: 7.5 minutes
- Tool calls allowance: 30 calls
- Max loop iterations: 40 turns

## Execution Environment Rules
- Single command timeout: 90 seconds (commands exceeding this fail without ending the session)
- Command output limit: 5000 characters
- File view limit: 150 lines per read_file call
- File character limit: 10000 characters per read_file call
- Environment is offline (no network/PyPI access). All repository and test dependencies are ALREADY pre-installed. Do NOT attempt to run pip install or download packages.

## Instructions:
0. All source code is under `/workspace`. Do NOT search outside `/workspace` (e.g. `/usr/`, `/wheels/`, system site-packages). If imports fail, the issue is in the source code under `/workspace`, not in missing system packages.
1. Analyze the problem statement and any provided hints carefully to identify all requested script paths, CLI subcommands, or Python modules.
2. Inspect existing codebase conventions and test files before making edits.
3. Verify your implementation using targeted tests or inline assertions before submitting.
4. Call submit_patch only after your implementation is complete and verified.
5. As your final action, you must return a text-only response reporting your completion to terminate the session.
## Workspace Layout
The repository is located at `/workspace`. Here is the directory tree (up to 3 levels):
```
./AUTHORS
./CODE_OF_CONDUCT.md
./LICENSE
./MANIFEST.in
./README.md
./appveyor.yml
./docs
./requirements-dev.txt
./setup.cfg
./setup.py
./tap
./tap/__init__.py
./tap/__main__.py
./tap/adapter.py
./tap/directive.py
./tap/formatter.py
./tap/i18n.py
./tap/line.py
./tap/loader.py
./tap/locale
./tap/locale/ar
./tap/locale/de
./tap/locale/es
./tap/locale/fr
./tap/locale/it
./tap/locale/ja
./tap/locale/nl
./tap/locale/pt
./tap/locale/ru
./tap/locale/tappy.pot
./tap/locale/zh
./tap/main.py
./tap/parser.py
./tap/rules.py
./tap/runner.py
./tap/tests
./tap/tests/__init__.py
./tap/tests/factory.py
./tap/tests/run.py
./tap/tests/test_adapter.py
./tap/tests/test_directive.py
./tap/tests/test_formatter.py
./tap/tests/test_line.py
./tap/tests/test_loader.py
./tap/tests/test_main.py
./tap/tests/test_parser.py
./tap/tests/test_result.py
./tap/tests/test_rules.py
./tap/tests/test_runner.py
./tap/tests/test_tracker.py
./tap/tests/testcase.py
./tap/tracker.py
./tox.ini
./transifex.py
```
Turn 1at 13 s132 tokens out3,856 prompt tokens
The user is reporting a bug in `tap.parser.Parser._extract_yaml_block()`.
The issue is that `"\n".join(raw_yaml)` is used without stripping newline characters from each line in `raw_yaml`, which leads to extra newlines in the resulting YAML string, especially impacting multi-line strings in YAML.

Let's start by locating the `_extract_yaml_block` method in `tap/parser.py`.
TOOL CALL · run_command
{
  "command": "grep -rn --include=\"*.py\" \"_extract_yaml_block\" ."
}
Result of run_command 208 characters
{
  "status": "ok",
  "stdout": "./tap/parser.py:168:        concat_yaml = self._extract_yaml_block(indent, fh)\n./tap/parser.py:177:    def _extract_yaml_block(self, indent, fh):\n",
  "stderr": "",
  "exit_code": 0
}
Turn 2at 16 s78 tokens out4,082 prompt tokens
The method is in `tap/parser.py` at line 177.

Let's read the implementation of `_extract_yaml_block` in `tap/parser.py`.
TOOL CALL · read_file
{
  "end_line": 210,
  "filepath": "tap/parser.py",
  "start_line": 177
}
Result of read_file 1,077 characters
{
  "status": "ok",
  "filepath": "tap/parser.py",
  "content": "    def _extract_yaml_block(self, indent, fh):\n        \"\"\"Extract a raw yaml block from a file handler\"\"\"\n        raw_yaml = []\n        indent_match = re.compile(r\"^{}\".format(indent))\n        try:\n            next(fh)\n            while indent_match.match(fh.peek()):\n                raw_yaml.append(next(fh).replace(indent, \"\", 1))\n                # check for the end and stop adding yaml if encountered\n                if self.yaml_block_end.match(fh.peek()):\n                    next(fh)\n                    break\n        except StopIteration:\n            pass\n        return \"\\n\".join(raw_yaml)\n\n    def _parse_version(self, match):\n        version = int(match.group(\"version\"))\n        if version < self.TAP_MINIMUM_DECLARED_VERSION:\n            raise ValueError(\n                _(\"It is an error to explicitly specify any version lower than 13.\")\n            )\n        return Version(version)",
  "start_line": 177,
  "end_line": 199,
  "total_lines": 199,
  "is_truncated": false
}
Turn 3at 38 s419 tokens out4,486 prompt tokens
The implementation is:
```python
    def _extract_yaml_block(self, indent, fh):
        """Extract a raw yaml block from a file handler"""
        raw_yaml = []
        indent_match = re.compile(r"^{}".format(indent))
        try:
            next(fh)
            while indent_match.match(fh.peek()):
                raw_yaml.append(next(fh).replace(indent, "", 1))
                # check for the end and stop adding yaml if encountered
                if self.yaml_block_end.match(fh.peek()):
                    next(fh)
                    break
        except StopIteration:
            pass
        return "\n".join(raw_yaml)
```
The `next(fh)` call returns a line that typically includes the newline character at the end.
If `next(fh)` returns `"line1\n"`, then `raw_yaml` becomes `["line1\n"]`.
Then `"\n".join(raw_yaml)` becomes `"line1\n\n"`.
This explains why extra newlines are added.

The problem description provided a reproduction script. Let's run it.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nimport tap.parser\n\ntap_input = \"\"\"TAP version 13\n1..2\nok 1 A passing test\n   ---\n   message: test\n   severity: fail\n   output: |+\n     this is a multiline\n     string but with tap\n     somehow blank lines\n     are added to it.\n\"\"\"\nparser = tap.parser.Parser()\n\nfor i, l in enumerate(parser.parse_text(tap_input)):\n    if i == 2:\n        print(\"{!r}\".format(l.yaml_block[\"output\"].splitlines()))\nPY\n"
}
Result of run_command 167 characters
{
  "status": "ok",
  "stdout": "['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']\n",
  "stderr": "",
  "exit_code": 0
}
Turn 4at 59 s309 tokens out4,976 prompt tokens
The output matches the issue description:
`['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']`
Expected:
`['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']`

Wait, why are there empty strings at the beginning and between each line?
If the input is:
```
     this is a multiline\n
     string but with tap\n
     somehow blank lines\n
     are added to it.\n
```
(where `     ` is the indent)

In `_extract_yaml_block`:
1. `next(fh)` is called once. This consumes the line containing `---` (or the line before the block).
Actually, looking at the `Parser.parse_text` implementation might help, but let's look at `_extract_yaml_block` again.

Wait, `fh` is an iterator over lines. If `tap_input` is passed to `parse_text`, it probably uses `io.StringIO(tap_input).readlines()` or similar.

Let's see how `Parser.parse_text` is implemented.
TOOL CALL · read_file
{
  "end_line": 176,
  "filepath": "tap/parser.py",
  "start_line": 130
}
Result of read_file 1,795 characters
{
  "status": "ok",
  "filepath": "tap/parser.py",
  "content": "\n        match = self.bail.match(text)\n        if match:\n            return Bail(match.group(\"reason\"))\n\n        match = self.version.match(text)\n        if match:\n            return self._parse_version(match)\n\n        return Unknown()\n\n    def _parse_plan(self, match):\n        \"\"\"Parse a matching plan line.\"\"\"\n        expected_tests = int(match.group(\"expected\"))\n        directive = Directive(match.group(\"directive\"))\n\n        # Only SKIP directives are allowed in the plan.\n        if directive.text and not directive.skip:\n            return Unknown()\n\n        return Plan(expected_tests, directive)\n\n    def _parse_result(self, ok, match, fh=None):\n        \"\"\"Parse a matching result line into a result instance.\"\"\"\n        peek_match = None\n        try:\n            if fh is not None and ENABLE_VERSION_13 and isinstance(fh, peekable):\n                peek_match = self.yaml_block_start.match(fh.peek())\n        except StopIteration:\n            pass\n        if peek_match is None:\n            return Result(\n                ok,\n                number=match.group(\"number\"),\n                description=match.group(\"description\").strip(),\n                directive=Directive(match.group(\"directive\")),\n            )\n        indent = peek_match.group(\"indent\")\n        concat_yaml = self._extract_yaml_block(indent, fh)\n        return Result(\n            ok,\n            number=match.group(\"number\"),\n            description=match.group(\"description\").strip(),\n            directive=Directive(match.group(\"directive\")),\n            raw_yaml_block=concat_yaml,\n        )\n",
  "start_line": 130,
  "end_line": 176,
  "total_lines": 199,
  "is_truncated": false
}
Turn 5at 66 s89 tokens out5,793 prompt tokens
And `parse_text` probably calls `_parse_result`.

```python
    def parse_text(self, text):
        """Parse a string as TAP text."""
        # ...
```
I should see `parse_text`.
TOOL CALL · read_file
{
  "end_line": 120,
  "filepath": "tap/parser.py",
  "start_line": 80
}
Result of read_file 1,838 characters
{
  "status": "ok",
  "filepath": "tap/parser.py",
  "content": "        \"\"\"Parse a string containing one or more lines of TAP output.\"\"\"\n        return self.parse(StringIO(text))\n\n    def parse(self, fh):\n        \"\"\"Generate tap.line.Line objects, given a file-like object `fh`.\n\n        `fh` may be any object that implements both the iterator and\n        context management protocol (i.e. it can be used in both a\n        \"with\" statement and a \"for...in\" statement.)\n\n        Trailing whitespace and newline characters will be automatically\n        stripped from the input lines.\n        \"\"\"\n        with fh:\n            try:\n                first_line = next(fh)\n            except StopIteration:\n                return\n            first_parsed = self.parse_line(first_line.rstrip())\n            fh_new = itertools.chain([first_line], fh)\n            if first_parsed.category == \"version\" and first_parsed.version >= 13:\n                if ENABLE_VERSION_13:\n                    fh_new = peekable(itertools.chain([first_line], fh))\n                else:  # pragma no cover\n                    print(\n                        \"\"\"\nWARNING: Optional imports not found, TAP 13 output will be\n    ignored. To parse yaml, see requirements in docs:\n    https://tappy.readthedocs.io/en/latest/consumers.html#tap-version-13\"\"\"\n                    )\n\n            for line in fh_new:\n                yield self.parse_line(line.rstrip(), fh_new)\n\n    def parse_line(self, text, fh=None):\n        \"\"\"Parse a line into whatever TAP category it belongs.\"\"\"\n        match = self.ok.match(text)\n        if match:\n            return self._parse_result(True, match, fh)\n\n        match = self.not_ok.match(text)",
  "start_line": 80,
  "end_line": 120,
  "total_lines": 199,
  "is_truncated": false
}
Turn 6at 203 s2,310 tokens out6,401 prompt tokens
In `parse`, each line is `rstrip()`-ed before being passed to `parse_line`.
```python
            for line in fh_new:
                yield self.parse_line(line.rstrip(), fh_new)
```
So `text` in `parse_line` doesn't have the trailing newline.
However, inside `_parse_result`, `_extract_yaml_block` is called with `fh` (which is `fh_new`).
`fh_new` consists of the original lines from the file object, which *do* have the trailing newline.

```python
    def _extract_yaml_block(self, indent, fh):
        """Extract a raw yaml block from a file handler"""
        raw_yaml = []
        indent_match = re.compile(r"^{}".format(indent))
        try:
            next(fh) # 1. This consumes the line that triggered the yaml block start (after it was already processed by parse_line)
            # Wait, no. In parse(), we called parse_line(line.rstrip(), fh_new).
            # The line is already consumed from fh_new.
            # But fh_new = itertools.chain([first_line], fh).
            # In the loop: for line in fh_new:
            # The iterator fh_new is advanced.
```

Let's trace `parse` more carefully.
```python
            for line in fh_new:
                yield self.parse_line(line.rstrip(), fh_new)
```
The `line` is already popped from `fh_new`.
In `parse_line`:
```python
    def parse_line(self, text, fh=None):
        # ...
        match = self.ok.match(text)
        if match:
            return self._parse_result(True, match, fh)
```
Then in `_parse_result`:
```python
        if peek_match is None:
            # ...
        indent = peek_match.group("indent")
        concat_yaml = self._extract_yaml_block(indent, fh)
```
And in `_extract_yaml_block`:
```python
    def _extract_yaml_block(self, indent, fh):
        # ...
        try:
            next(fh)
            while indent_match.match(fh.peek()):
                raw_yaml.append(next(fh).replace(indent, "", 1))
                # ...
```
Wait, if `parse` is doing `for line in fh_new:`, then `line` is already gone from `fh_new`.
But `_extract_yaml_block` calls `next(fh)` at the beginning.
Wait, `fh` here is `fh_new`.
When `parse_line` is called, `line` has been yielded by `fh_new`.
So the current line (the one with `ok 1 ...`) is already gone.
The first `next(fh)` in `_extract_yaml_block` should be the line containing `---`.

Let's re-examine the input:
```
ok 1 A passing test
   ---
   message: test
```
`parse` loop:
1. `line` = `"ok 1 A passing test\n"`
2. `parse_line("ok 1 A passing test", fh_new)`
3. `_parse_result(True, match, fh_new)`
4. `peek_match` matches `"   ---\n"`
5. `_extract_yaml_block("   ", fh_new)`:
    a. `next(fh_new)` consumes `"   ---\n"`
    b. `fh_new.peek()` is `"   message: test\n"`
    c. `indent_match` matches.
    d. `next(fh_new)` returns `"   message: test\n"`.
    e. `.replace("   ", "", 1)` returns `"message: test\n"`.
    f. `raw_yaml` becomes `["message: test\n"]`.
    g. ...
    h. returning `"\n".join(raw_yaml)` returns `"message: test\n\n"`.

Exactly! The lines from `fh` have trailing newlines, and we add another newline via `"\n".join()`.

Wait, but in the reproduction output:
`['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']`
This means the result of `l.yaml_block["output"]` was something like:
`"\nthis is a multiline\n\nstring but with tap\n\nsomehow blank lines\n\nare added to it.\n"`

Let's look at the reproduction input's YAML block:
```yaml
   output: |+
     this is a multiline
     string but with tap
     somehow blank lines
     are added to it.
```
The lines in `raw_yaml` would be:
1. `output: |+\n`
2. `  this is a multiline\n`
3. `  string but with tap\n`
4. `  somehow blank lines\n`
5. `  are added to it.\n`

If we join them with `\n`, we get:
`output: |+\n\n  this is a multiline\n\n  string but with tap\n\n  somehow blank lines\n\n  are added to it.\n\n`

Wait, the indentation delivered to `_extract_yaml_block` is the indent of the `---` line.
In the example:
```
ok 1 A passing test
   ---
   message: test
   severity: fail
   output: |+
     this is a multiline
     string but with tap
     somehow blank lines
     are added to it.
```
The `---` line has 3 spaces. `indent` = `"   "`.
Lines in `raw_yaml`:
- `message: test\n`
- `severity: fail\n`
- `output: |+\n`
- `  this is a multiline\n`
- `  string but with tap\n`
- `  somehow blank lines\n`
- `  are added to it.\n`

Joined with `\n`:
`message: test\n\nseverity: fail\n\noutput: |+\n\n  this is a multiline\n\n  string but with tap\n\n  somehow blank lines\n\n  are added to it.\n`

Depending on how the YAML parser handles these extra newlines, it might interpret them as empty lines.

The fix should be to strip the trailing newline from the line returned by `next(fh)` before adding it to `raw_yaml`.

Wait, `next(fh).rstrip('\n')` or `next(fh).rstrip('\r\n')`?
Usually, in Python's file reading, it's better to use `.rstrip('\n')` or `.rstrip('\r\n')` to avoid stripping trailing spaces that might be part of the YAML value.
Actually, `line.rstrip('\n')` removes the trailing newline but keeps trailing spaces.
Wait, `line[:-1]` if it ends with `\n`?
But some files might have `\r\n`.
`line.rstrip('\r\n')` would strip all trailing `\r` and `\n`.
Alternatively, `line.removesuffix('\n')` (Python 3.9+).
The project seems to support Python 3.6+? Let's check `setup.py` or `pyproject.toml`.
Actually, a safe way to remove the trailing newline is `line.rstrip('\r\n')` if it's guaranteed to be the end of the line, but `rstrip` removes ALL of them.
`line.rstrip('\n').rstrip('\r')` might be safer if we want to keep trailing spaces.

Let's look at how other parts of the code handle newlines.
In `parse` method:
```python
            first_parsed = self.parse_line(first_line.rstrip())
            # ...
            for line in fh_new:
                yield self.parse_line(line.rstrip(), fh_new)
```
They use `.rstrip()`. But that strips all trailing whitespace, including spaces. For YAML, trailing spaces might be important (though rare).
However, the `_extract_yaml_block` is for the raw YAML block.

The issue report says:
`_extract_yaml_block()` performs `"\n".join(raw_yaml)` without having stripped the newline character in each possible line.

So the fix should be:
`raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))`
Or simply `.rstrip('\r\n')`.

Wait, if I use `.rstrip('\n')`, it removes all trailing newlines. If a line was just `\n\n`, it would become empty.
Normally, `next(fh)` for a file returns one line ending with one newline.

Let's verify the behavior of `.rstrip('\n')` vs `[:-1]`.
If `line = "foo  \n"`, `line.rstrip('\n')` is `"foo  "`.
If `line = "foo  \r\n"`, `line.rstrip('\n')` is `"foo  \r"`.
So `.rstrip('\r\n')` or `.rstrip('\n').rstrip('\r')` is better.

Wait, if I use `rstrip('\n')`, then `\n\n` at the end of a line would be stripped. But `next(fh)` only returns one line.

Let's see if `tappy` supports a specific Python version. `pyproject.toml` is not present, but `setup.py` might have it.
The `Workspace Layout` shows `setup.py` and `setup.cfg`.

Let's check `setup.py`.
TOOL CALL · read_file
{
  "filepath": "setup.py"
}
Result of read_file 3,057 characters
{
  "status": "ok",
  "filepath": "setup.py",
  "content": "# Copyright (c) 2019, Matt Layman and contributors\n\"\"\"\ntappy is a set of tools for working with the `Test Anything Protocol (TAP)\n<http://testanything.org/>`_, a line based test protocol for recording test\ndata in a standard way.\n\nFollow tappy development on `GitHub <https://github.com/python-tap/tappy>`_.\nDeveloper documentation is on\n`Read the Docs <https://tappy.readthedocs.io/>`_.\n\"\"\"\n\nfrom setuptools import find_packages, setup, Command\n\nimport tap\n\n\nclass ReleaseCommand(Command):\n    description = \"generate distribution release artifacts\"\n    user_options = []\n\n    def initialize_options(self):\n        \"\"\"Initialize options.\n        This method overrides a required abstract method.\n        \"\"\"\n\n    def finalize_options(self):\n        \"\"\"Finalize options.\n        This method overrides a required abstract method.\n        \"\"\"\n\n    def run(self):\n        \"\"\"Generate the distribution release artifacts.\n        The custom command is used to ensure that compiling\n        po to mo is not skipped.\n        \"\"\"\n        self.run_command(\"compile_catalog\")\n        self.run_command(\"sdist\")\n        self.run_command(\"bdist_wheel\")\n\n\n# The docs import setup.py for the version so only call setup when not behaving\n# as a module.\nif __name__ == \"__main__\":\n    with open(\"docs/releases.rst\", \"r\") as f:\n        releases = f.read()\n\n    long_description = __doc__ + \"\\n\\n\" + releases\n\n    setup(\n        name=\"tap.py\",\n        version=tap.__version__,\n        url=\"https://github.com/python-tap/tappy\",\n        license=\"BSD\",\n        author=\"Matt Layman\",\n        author_email=\"matthewlayman@gmail.com\",\n        description=\"Test Anything Protocol (TAP) tools\",\n        long_description=long_description,\n        packages=find_packages(),\n        entry_points={\n            \"console_scripts\": [\"tappy = tap.main:main\", \"tap = tap.main:main\"]\n        },\n        include_package_data=True,\n        zip_safe=False,\n        platforms=\"any\",\n        install_requires=[],\n        extras_require={\"yaml\": [\"more-itertools\", \"PyYAML>=5.1\"]},\n        classifiers=[\n            \"Development Status :: 5 - Production/Stable\",\n            \"Environment :: Console\",\n            \"Intended Audience :: Developers\",\n            \"License :: OSI Approved :: BSD License\",\n            \"Operating System :: OS Independent\",\n            \"Programming Language :: Python :: 3.5\",\n            \"Programming Language :: Python :: 3.6\",\n            \"Programming Language :: Python :: 3.7\",\n            \"Programming Language :: Python :: 3.8\",\n            \"Programming Language :: Python :: Implementation :: PyPy\",\n            \"Topic :: Software Development :: Testing\",\n        ],\n        keywords=[\"TAP\", \"unittest\"],\n        cmdclass={\"release\": ReleaseCommand},\n    )",
  "start_line": 1,
  "end_line": 82,
  "total_lines": 82,
  "is_truncated": false
}
Turn 7at 250 s833 tokens out9,559 prompt tokens
It supports Python 3.5+. So no `removesuffix`.

The most common way to remove the trailing newline from a line read from a file in a cross-platform way is `.rstrip('\r\n')` or just stripping the newline character.
Actually, if we use `.rstrip('\n').rstrip('\r')`, it behaves exactly as removing the trailing newline (if it exists).

Wait, `line.rstrip('\r\n')` will strip ALL trailing newlines. For example, if a line ended in `\n\n` (though `next(fh)` should only give one line), it would strip both.
But `next(fh)` should only return one line.

Let's see what happens if we use `.rstrip('\r\n')`.
If the line is `"line  \n"`, result is `"line  "`.
If the line is `"line  \r\n"`, result is `"line  "`.
If the line is `"line\n\n"`, result is `"line"`.

Actually, the most robust way to remove the trailing newline is to use `rstrip('\n').rstrip('\r')`.

Let's try applying the fix and verify with the reproduction script.

The fix:
In `tap/parser.py`:
```python
                raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))
```
Wait, looking at `_extract_yaml_block` again:
```python
    def _extract_yaml_block(self, indent, fh):
        """Extract a raw yaml block from a file handler"""
        raw_yaml = []
        indent_match = re.compile(r"^{}".format(indent))
        try:
            next(fh)
            while indent_match.match(fh.peek()):
                raw_yaml.append(next(fh).replace(indent, "", 1))
                # check for the end and stop adding yaml if encountered
                if self.yaml_block_end.match(fh.peek()):
                    next(fh)
                    break
        except StopIteration:
            pass
        return "\n".join(raw_yaml)
```

One detail: `next(fh).replace(indent, "", 1)` might be better as `next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r')`.

Wait, the line returned by `next(fh)` still has the newline.
If we do `.replace(indent, "", 1)`, then strip the newline, we are good.

Let's refine the change.
```python
-                raw_yaml.append(next(fh).replace(indent, "", 1))
+                raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))
```

Wait, if I use `.rstrip('\n').rstrip('\r')`, I might strip trailing spaces if the line only contained newlines? No, `\n` is not a space.

Wait, if `next(fh)` returns `"  \n"`, and `indent` is `"  "`.
`"  \n".replace("  ", "", 1)` → `"\n"`.
`"\n".rstrip('\n').rstrip('\r')` → `""`.
This seems correct.

Let's verify this with a test.
TOOL CALL · edit_file
{
  "filepath": "tap/parser.py",
  "new_string": "                raw_yaml.append(next(fh).replace(indent, \"\", 1).rstrip('\\n').rstrip('\\r'))",
  "old_string": "                raw_yaml.append(next(fh).replace(indent, \"\", 1))"
}
Result of edit_file 601 characters
{
  "status": "ok",
  "filepath": "tap/parser.py",
  "occurrences": 1,
  "strategy": "exact",
  "diff": "--- a/tap/parser.py\n+++ b/tap/parser.py\n@@ -181,7 +181,7 @@\n         try:\n             next(fh)\n             while indent_match.match(fh.peek()):\n-                raw_yaml.append(next(fh).replace(indent, \"\", 1))\n+                raw_yaml.append(next(fh).replace(indent, \"\", 1).rstrip('\\n').rstrip('\\r'))\n                 # check for the end and stop adding yaml if encountered\n                 if self.yaml_block_end.match(fh.peek()):\n                     next(fh)\n",
  "is_truncated": false
}
Turn 8at 259 s165 tokens out10,599 prompt tokens
Now let's run the reproduction script again.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nimport tap.parser\n\ntap_input = \"\"\"TAP version 13\n1..2\nok 1 A passing test\n   ---\n   message: test\n   severity: fail\n   output: |+\n     this is a multiline\n     string but with tap\n     somehow blank lines\n     are added to it.\n\"\"\"\nparser = tap.parser.Parser()\n\nfor i, l in enumerate(parser.parse_text(tap_input)):\n    if i == 2:\n        print(\"{!r}\".format(l.yaml_block[\"output\"].splitlines()))\nPY\n"
}
Result of run_command 151 characters
{
  "status": "ok",
  "stdout": "['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']\n",
  "stderr": "",
  "exit_code": 0
}
Turn 9at 267 s109 tokens out10,830 prompt tokens
The output is now:
`['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']`
This matches the expected output!

Now let's check if this change broke anything else. I'll run the existing tests in `tap/tests/test_parser.py`.
TOOL CALL · run_command
{
  "command": "pytest tap/tests/test_parser.py -q --tb=short --no-header"
}
Result of run_command 161 characters
{
  "status": "ok",
  "stdout": "...........................                                              [100%]\n27 passed in 0.08s\n",
  "stderr": "",
  "exit_code": 0
}
Turn 10at 327 s790 tokens out11,000 prompt tokens
The existing tests passed.
I should also check for any other places where `_extract_yaml_block` might be called, but `grep` indicated it's only called in `_parse_result` (actually `grep` output showed line 168 is the call site).

Wait, let me double check if there are other parallel paths.
The `grep` call:
`grep -rn --include="*.py" "_extract_yaml_block" .`
Result:
`./tap/parser.py:168:        concat_yaml = self._extract_yaml_block(indent, fh)`
`./tap/parser.py:177:    def _extract_yaml_block(self, indent, fh):`

Only one implementation and one call site.

Are there any other potential issues?
If `next(fh)` doesn't end with a newline? (e.g. the last line of the file).
`"".rstrip('\n').rstrip('\r')` is `""`.
`"foo".rstrip('\n').rstrip('\r')` is `"foo"`.
So it's safe.

What if there are trailing spaces?
`"foo  \n".rstrip('\n').rstrip('\r')` is `"foo  "`.
This is correct, as trailing spaces in YAML can be significant.

Wait, one more thing. The problem statement mentioned multi-line strings in YAML blocks.
Example:
```yaml
   output: |+
     this is a multiline
     string but with tap
     somehow blank lines
     are added to it.
```
In YAML, `|+` is a literal block scalar with "keep" chomping.

If we have:
```python
    def _extract_yaml_block(self, indent, fh):
        # ...
        return "\n".join(raw_yaml)
```
If `raw_yaml` is `["output: |+", "  line 1", "  line 2"]`, result is `"output: |+\n  line 1\n  line 2"`.
This is a valid YAML string.

If we had `["output: |+\n", "  line 1\n", "  line 2\n"]`, result would be `"output: |+\n\n  line 1\n\n  line 2\n\n"`.
Which is why we had those extra blank lines.

Is there any case where `\n`.join might be wrong?
If the original file had `\r\n`, we're now joining with `\n`.
But `PyYAML` (which is used to parse the resulting string) handles both.

Let's verify if there are any other tests that might be relevant.
`tap/tests/test_parser.py` covers `Parser`.

I'll do one last check of the reproduction input to see if there are any tricky things.
The reproduction used `splitlines()`, which handles various newline types.

One last check: `_extract_yaml_block` uses `fh.peek()`. `fh` is a `peekable` iterator.
If the file ends while extracting the YAML block, `StopIteration` is caught and it returns what it has.

Let's check if any other methods in `tap/parser.py` might have similar issues.
I'll search for `"\n".join(` in `tap/parser.py`.
TOOL CALL · run_command
{
  "command": "grep -rn '\"\\n\".join(' tap/parser.py"
}
Result of run_command 127 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "",
  "details": {
    "stdout": "",
    "stderr": "",
    "exit_code": 1
  }
}
Turn 11at 331 s68 tokens out11,845 prompt tokens
No other `"\n".join(` in `tap/parser.py`.

I'm confident in the fix.

Let's double check the `git status` and `git diff` just in case.
TOOL CALL · run_command
{
  "command": "git status --short && git diff"
}
Result of run_command 694 characters
{
  "status": "ok",
  "stdout": " M tap/parser.py\ndiff --git a/tap/parser.py b/tap/parser.py\nindex 637436b..43e82c1 100644\n--- a/tap/parser.py\n+++ b/tap/parser.py\n@@ -181,7 +181,7 @@ WARNING: Optional imports not found, TAP 13 output will be\n         try:\n             next(fh)\n             while indent_match.match(fh.peek()):\n-                raw_yaml.append(next(fh).replace(indent, \"\", 1))\n+                raw_yaml.append(next(fh).replace(indent, \"\", 1).rstrip('\\n').rstrip('\\r'))\n                 # check for the end and stop adding yaml if encountered\n                 if self.yaml_block_end.match(fh.peek()):\n                     next(fh)\n",
  "stderr": "",
  "exit_code": 0
}
Turn 12at 333 s23 tokens out12,169 prompt tokens
The diff looks clean. I'll submit the patch.
TOOL CALL · submit_patch
Result of submit_patch 55 characters
{
  "status": "ok",
  "patch_size": 597,
  "files_changed": 1
}
Turn 13at 348 s152 tokens out12,231 prompt tokens
I have successfully reproduced the bug, implemented the fix by stripping trailing newline characters in `_extract_yaml_block`, verified it with the reproduction script, and ensured that existing tests still pass.
Turn 14at 348 s
The issue was caused by `_extract_yaml_block` in `tap/parser.py` joining lines from the file handler using `"\n".join()`, without first stripping the existing trailing newlines from each line. This resulted in double newlines (empty lines) being inserted into the raw YAML block, which corrupted multi-line strings when parsed. I fixed this by applying `.rstrip('\n').rstrip('\r')` to each line extracted from the file handler.

Verified the fix with the reproduction script and existing test suite.

Model calls (not matched to turns)

Generated tokens 132 tokens · stopped: STOP
The user is reporting a bug in `tap.parser.Parser._extract_yaml_block()`.
The issue is that `"\n".join(raw_yaml)` is used without stripping newline characters from each line in `raw_yaml`, which leads to extra newlines in the resulting YAML string, especially impacting multi-line strings in YAML.

Let's start by locating the `_extract_yaml_block` method in `tap/parser.py`.
<|channel>thought The user is reporting a bug in `tap.parser.Parser._extract_yaml_block()`. The issue is that `"\n".join(raw_yaml)` is used without stripping newline characters from each line in `raw_yaml`, which leads to extra newlines in the resulting YAML string, especially impacting multi-line strings in YAML. Let's start by locating the `_extract_yaml_block` method in `tap/parser.py`.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn --include="*.py" "_extract_yaml_block" .<|"|>}<tool_call|><|tool_response>
Generated tokens 78 tokens · stopped: STOP
The method is in `tap/parser.py` at line 177.

Let's read the implementation of `_extract_yaml_block` in `tap/parser.py`.
The method is in `tap/parser.py` at line 177. Let's read the implementation of `_extract_yaml_block` in `tap/parser.py`.<channel|><|tool_call>call:read_file{filepath:<|"|>tap/parser.py<|"|>,start_line:177,end_line:210}<tool_call|><|tool_response>
Generated tokens 419 tokens · stopped: STOP
The implementation is:
```python
    def _extract_yaml_block(self, indent, fh):
        """Extract a raw yaml block from a file handler"""
        raw_yaml = []
        indent_match = re.compile(r"^{}".format(indent))
        try:
            next(fh)
            while indent_match.match(fh.peek()):
                raw_yaml.append(next(fh).replace(indent, "", 1))
                # check for the end and stop adding yaml if encountered
                if self.yaml_block_end.match(fh.peek()):
                    next(fh)
                    break
        except StopIteration:
            pass
        return "\n".join(raw_yaml)
```
The `next(fh)` call returns a line that typically includes the newline character at the end.
If `next(fh)` returns `"line1\n"`, then `raw_yaml` becomes `["line1\n"]`.
Then `"\n".join(raw_yaml)` becomes `"line1\n\n"`.
This explains why extra newlines are added.

The problem description provided a reproduction script. Let's run it.
The implementation is: ```python def _extract_yaml_block(self, indent, fh): """Extract a raw yaml block from a file handler""" raw_yaml = [] indent_match = re.compile(r"^{}".format(indent)) try: next(fh) while indent_match.match(fh.peek()): raw_yaml.append(next(fh).replace(indent, "", 1)) # check for the end and stop adding yaml if encountered if self.yaml_block_end.match(fh.peek()): next(fh) break except StopIteration: pass return "\n".join(raw_yaml) ``` The `next(fh)` call returns a line that typically includes the newline character at the end. If `next(fh)` returns `"line1\n"`, then `raw_yaml` becomes `["line1\n"]`. Then `"\n".join(raw_yaml)` becomes `"line1\n\n"`. This explains why extra newlines are added. The problem description provided a reproduction script. Let's run it. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' import tap.parser tap_input = """TAP version 13 1..2 ok 1 A passing test --- message: test severity: fail output: |+ this is a multiline string but with tap somehow blank lines are added to it. """ parser = tap.parser.Parser() for i, l in enumerate(parser.parse_text(tap_input)): if i == 2: print("{!r}".format(l.yaml_block["output"].splitlines())) PY <|"|>}<tool_call|><|tool_response>
Generated tokens 309 tokens · stopped: STOP
The output matches the issue description:
`['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']`
Expected:
`['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']`

Wait, why are there empty strings at the beginning and between each line?
If the input is:
```
     this is a multiline\n
     string but with tap\n
     somehow blank lines\n
     are added to it.\n
```
(where `     ` is the indent)

In `_extract_yaml_block`:
1. `next(fh)` is called once. This consumes the line containing `---` (or the line before the block).
Actually, looking at the `Parser.parse_text` implementation might help, but let's look at `_extract_yaml_block` again.

Wait, `fh` is an iterator over lines. If `tap_input` is passed to `parse_text`, it probably uses `io.StringIO(tap_input).readlines()` or similar.

Let's see how `Parser.parse_text` is implemented.
The output matches the issue description: `['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']` Expected: `['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']` Wait, why are there empty strings at the beginning and between each line? If the input is: ``` this is a multiline\n string but with tap\n somehow blank lines\n are added to it.\n ``` (where ` ` is the indent) In `_extract_yaml_block`: 1. `next(fh)` is called once. This consumes the line containing `---` (or the line before the block). Actually, looking at the `Parser.parse_text` implementation might help, but let's look at `_extract_yaml_block` again. Wait, `fh` is an iterator over lines. If `tap_input` is passed to `parse_text`, it probably uses `io.StringIO(tap_input).readlines()` or similar. Let's see how `Parser.parse_text` is implemented. <channel|><|tool_call>call:read_file{end_line:176,filepath:<|"|>tap/parser.py<|"|>,start_line:130}<tool_call|><|tool_response>
Generated tokens 89 tokens · stopped: STOP
And `parse_text` probably calls `_parse_result`.

```python
    def parse_text(self, text):
        """Parse a string as TAP text."""
        # ...
```
I should see `parse_text`.

And `parse_text` probably calls `_parse_result`. ```python def parse_text(self, text): """Parse a string as TAP text.""" # ... ``` I should see `parse_text`. <channel|><|tool_call>call:read_file{end_line:120,filepath:<|"|>tap/parser.py<|"|>,start_line:80}<tool_call|><|tool_response>
Generated tokens 2,310 tokens · stopped: STOP
In `parse`, each line is `rstrip()`-ed before being passed to `parse_line`.
```python
            for line in fh_new:
                yield self.parse_line(line.rstrip(), fh_new)
```
So `text` in `parse_line` doesn't have the trailing newline.
However, inside `_parse_result`, `_extract_yaml_block` is called with `fh` (which is `fh_new`).
`fh_new` consists of the original lines from the file object, which *do* have the trailing newline.

```python
    def _extract_yaml_block(self, indent, fh):
        """Extract a raw yaml block from a file handler"""
        raw_yaml = []
        indent_match = re.compile(r"^{}".format(indent))
        try:
            next(fh) # 1. This consumes the line that triggered the yaml block start (after it was already processed by parse_line)
            # Wait, no. In parse(), we called parse_line(line.rstrip(), fh_new).
            # The line is already consumed from fh_new.
            # But fh_new = itertools.chain([first_line], fh).
            # In the loop: for line in fh_new:
            # The iterator fh_new is advanced.
```

Let's trace `parse` more carefully.
```python
            for line in fh_new:
                yield self.parse_line(line.rstrip(), fh_new)
```
The `line` is already popped from `fh_new`.
In `parse_line`:
```python
    def parse_line(self, text, fh=None):
        # ...
        match = self.ok.match(text)
        if match:
            return self._parse_result(True, match, fh)
```
Then in `_parse_result`:
```python
        if peek_match is None:
            # ...
        indent = peek_match.group("indent")
        concat_yaml = self._extract_yaml_block(indent, fh)
```
And in `_extract_yaml_block`:
```python
    def _extract_yaml_block(self, indent, fh):
        # ...
        try:
            next(fh)
            while indent_match.match(fh.peek()):
                raw_yaml.append(next(fh).replace(indent, "", 1))
                # ...
```
Wait, if `parse` is doing `for line in fh_new:`, then `line` is already gone from `fh_new`.
But `_extract_yaml_block` calls `next(fh)` at the beginning.
Wait, `fh` here is `fh_new`.
When `parse_line` is called, `line` has been yielded by `fh_new`.
So the current line (the one with `ok 1 ...`) is already gone.
The first `next(fh)` in `_extract_yaml_block` should be the line containing `---`.

Let's re-examine the input:
```
ok 1 A passing test
   ---
   message: test
```
`parse` loop:
1. `line` = `"ok 1 A passing test\n"`
2. `parse_line("ok 1 A passing test", fh_new)`
3. `_parse_result(True, match, fh_new)`
4. `peek_match` matches `"   ---\n"`
5. `_extract_yaml_block("   ", fh_new)`:
    a. `next(fh_new)` consumes `"   ---\n"`
    b. `fh_new.peek()` is `"   message: test\n"`
    c. `indent_match` matches.
    d. `next(fh_new)` returns `"   message: test\n"`.
    e. `.replace("   ", "", 1)` returns `"message: test\n"`.
    f. `raw_yaml` becomes `["message: test\n"]`.
    g. ...
    h. returning `"\n".join(raw_yaml)` returns `"message: test\n\n"`.

Exactly! The lines from `fh` have trailing newlines, and we add another newline via `"\n".join()`.

Wait, but in the reproduction output:
`['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']`
This means the result of `l.yaml_block["output"]` was something like:
`"\nthis is a multiline\n\nstring but with tap\n\nsomehow blank lines\n\nare added to it.\n"`

Let's look at the reproduction input's YAML block:
```yaml
   output: |+
     this is a multiline
     string but with tap
     somehow blank lines
     are added to it.
```
The lines in `raw_yaml` would be:
1. `output: |+\n`
2. `  this is a multiline\n`
3. `  string but with tap\n`
4. `  somehow blank lines\n`
5. `  are added to it.\n`

If we join them with `\n`, we get:
`output: |+\n\n  this is a multiline\n\n  string but with tap\n\n  somehow blank lines\n\n  are added to it.\n\n`

Wait, the indentation delivered to `_extract_yaml_block` is the indent of the `---` line.
In the example:
```
ok 1 A passing test
   ---
   message: test
   severity: fail
   output: |+
     this is a multiline
     string but with tap
     somehow blank lines
     are added to it.
```
The `---` line has 3 spaces. `indent` = `"   "`.
Lines in `raw_yaml`:
- `message: test\n`
- `severity: fail\n`
- `output: |+\n`
- `  this is a multiline\n`
- `  string but with tap\n`
- `  somehow blank lines\n`
- `  are added to it.\n`

Joined with `\n`:
`message: test\n\nseverity: fail\n\noutput: |+\n\n  this is a multiline\n\n  string but with tap\n\n  somehow blank lines\n\n  are added to it.\n`

Depending on how the YAML parser handles these extra newlines, it might interpret them as empty lines.

The fix should be to strip the trailing newline from the line returned by `next(fh)` before adding it to `raw_yaml`.

Wait, `next(fh).rstrip('\n')` or `next(fh).rstrip('\r\n')`?
Usually, in Python's file reading, it's better to use `.rstrip('\n')` or `.rstrip('\r\n')` to avoid stripping trailing spaces that might be part of the YAML value.
Actually, `line.rstrip('\n')` removes the trailing newline but keeps trailing spaces.
Wait, `line[:-1]` if it ends with `\n`?
But some files might have `\r\n`.
`line.rstrip('\r\n')` would strip all trailing `\r` and `\n`.
Alternatively, `line.removesuffix('\n')` (Python 3.9+).
The project seems to support Python 3.6+? Let's check `setup.py` or `pyproject.toml`.
Actually, a safe way to remove the trailing newline is `line.rstrip('\r\n')` if it's guaranteed to be the end of the line, but `rstrip` removes ALL of them.
`line.rstrip('\n').rstrip('\r')` might be safer if we want to keep trailing spaces.

Let's look at how other parts of the code handle newlines.
In `parse` method:
```python
            first_parsed = self.parse_line(first_line.rstrip())
            # ...
            for line in fh_new:
                yield self.parse_line(line.rstrip(), fh_new)
```
They use `.rstrip()`. But that strips all trailing whitespace, including spaces. For YAML, trailing spaces might be important (though rare).
However, the `_extract_yaml_block` is for the raw YAML block.

The issue report says:
`_extract_yaml_block()` performs `"\n".join(raw_yaml)` without having stripped the newline character in each possible line.

So the fix should be:
`raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))`
Or simply `.rstrip('\r\n')`.

Wait, if I use `.rstrip('\n')`, it removes all trailing newlines. If a line was just `\n\n`, it would become empty.
Normally, `next(fh)` for a file returns one line ending with one newline.

Let's verify the behavior of `.rstrip('\n')` vs `[:-1]`.
If `line = "foo  \n"`, `line.rstrip('\n')` is `"foo  "`.
If `line = "foo  \r\n"`, `line.rstrip('\n')` is `"foo  \r"`.
So `.rstrip('\r\n')` or `.rstrip('\n').rstrip('\r')` is better.

Wait, if I use `rstrip('\n')`, then `\n\n` at the end of a line would be stripped. But `next(fh)` only returns one line.

Let's see if `tappy` supports a specific Python version. `pyproject.toml` is not present, but `setup.py` might have it.
The `Workspace Layout` shows `setup.py` and `setup.cfg`.

Let's check `setup.py`.
In `parse`, each line is `rstrip()`-ed before being passed to `parse_line`. ```python for line in fh_new: yield self.parse_line(line.rstrip(), fh_new) ``` So `text` in `parse_line` doesn't have the trailing newline. However, inside `_parse_result`, `_extract_yaml_block` is called with `fh` (which is `fh_new`). `fh_new` consists of the original lines from the file object, which *do* have the trailing newline. ```python def _extract_yaml_block(self, indent, fh): """Extract a raw yaml block from a file handler""" raw_yaml = [] indent_match = re.compile(r"^{}".format(indent)) try: next(fh) # 1. This consumes the line that triggered the yaml block start (after it was already processed by parse_line) # Wait, no. In parse(), we called parse_line(line.rstrip(), fh_new). # The line is already consumed from fh_new. # But fh_new = itertools.chain([first_line], fh). # In the loop: for line in fh_new: # The iterator fh_new is advanced. ``` Let's trace `parse` more carefully. ```python for line in fh_new: yield self.parse_line(line.rstrip(), fh_new) ``` The `line` is already popped from `fh_new`. In `parse_line`: ```python def parse_line(self, text, fh=None): # ... match = self.ok.match(text) if match: return self._parse_result(True, match, fh) ``` Then in `_parse_result`: ```python if peek_match is None: # ... indent = peek_match.group("indent") concat_yaml = self._extract_yaml_block(indent, fh) ``` And in `_extract_yaml_block`: ```python def _extract_yaml_block(self, indent, fh): # ... try: next(fh) while indent_match.match(fh.peek()): raw_yaml.append(next(fh).replace(indent, "", 1)) # ... ``` Wait, if `parse` is doing `for line in fh_new:`, then `line` is already gone from `fh_new`. But `_extract_yaml_block` calls `next(fh)` at the beginning. Wait, `fh` here is `fh_new`. When `parse_line` is called, `line` has been yielded by `fh_new`. So the current line (the one with `ok 1 ...`) is already gone. The first `next(fh)` in `_extract_yaml_block` should be the line containing `---`. Let's re-examine the input: ``` ok 1 A passing test --- message: test ``` `parse` loop: 1. `line` = `"ok 1 A passing test\n"` 2. `parse_line("ok 1 A passing test", fh_new)` 3. `_parse_result(True, match, fh_new)` 4. `peek_match` matches `" ---\n"` 5. `_extract_yaml_block(" ", fh_new)`: a. `next(fh_new)` consumes `" ---\n"` b. `fh_new.peek()` is `" message: test\n"` c. `indent_match` matches. d. `next(fh_new)` returns `" message: test\n"`. e. `.replace(" ", "", 1)` returns `"message: test\n"`. f. `raw_yaml` becomes `["message: test\n"]`. g. ... h. returning `"\n".join(raw_yaml)` returns `"message: test\n\n"`. Exactly! The lines from `fh` have trailing newlines, and we add another newline via `"\n".join()`. Wait, but in the reproduction output: `['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to it.']` This means the result of `l.yaml_block["output"]` was something like: `"\nthis is a multiline\n\nstring but with tap\n\nsomehow blank lines\n\nare added to it.\n"` Let's look at the reproduction input's YAML block: ```yaml output: |+ this is a multiline string but with tap somehow blank lines are added to it. ``` The lines in `raw_yaml` would be: 1. `output: |+\n` 2. ` this is a multiline\n` 3. ` string but with tap\n` 4. ` somehow blank lines\n` 5. ` are added to it.\n` If we join them with `\n`, we get: `output: |+\n\n this is a multiline\n\n string but with tap\n\n somehow blank lines\n\n are added to it.\n\n` Wait, the indentation delivered to `_extract_yaml_block` is the indent of the `---` line. In the example: ``` ok 1 A passing test --- message: test severity: fail output: |+ this is a multiline string but with tap somehow blank lines are added to it. ``` The `---` line has 3 spaces. `indent` = `" "`. Lines in `raw_yaml`: - `message: test\n` - `severity: fail\n` - `output: |+\n` - ` this is a multiline\n` - ` string but with tap\n` - ` somehow blank lines\n` - ` are added to it.\n` Joined with `\n`: `message: test\n\nseverity: fail\n\noutput: |+\n\n this is a multiline\n\n string but with tap\n\n somehow blank lines\n\n are added to it.\n` Depending on how the YAML parser handles these extra newlines, it might interpret them as empty lines. The fix should be to strip the trailing newline from the line returned by `next(fh)` before adding it to `raw_yaml`. Wait, `next(fh).rstrip('\n')` or `next(fh).rstrip('\r\n')`? Usually, in Python's file reading, it's better to use `.rstrip('\n')` or `.rstrip('\r\n')` to avoid stripping trailing spaces that might be part of the YAML value. Actually, `line.rstrip('\n')` removes the trailing newline but keeps trailing spaces. Wait, `line[:-1]` if it ends with `\n`? But some files might have `\r\n`. `line.rstrip('\r\n')` would strip all trailing `\r` and `\n`. Alternatively, `line.removesuffix('\n')` (Python 3.9+). The project seems to support Python 3.6+? Let's check `setup.py` or `pyproject.toml`. Actually, a safe way to remove the trailing newline is `line.rstrip('\r\n')` if it's guaranteed to be the end of the line, but `rstrip` removes ALL of them. `line.rstrip('\n').rstrip('\r')` might be safer if we want to keep trailing spaces. Let's look at how other parts of the code handle newlines. In `parse` method: ```python first_parsed = self.parse_line(first_line.rstrip()) # ... for line in fh_new: yield self.parse_line(line.rstrip(), fh_new) ``` They use `.rstrip()`. But that strips all trailing whitespace, including spaces. For YAML, trailing spaces might be important (though rare). However, the `_extract_yaml_block` is for the raw YAML block. The issue report says: `_extract_yaml_block()` performs `"\n".join(raw_yaml)` without having stripped the newline character in each possible line. So the fix should be: `raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))` Or simply `.rstrip('\r\n')`. Wait, if I use `.rstrip('\n')`, it removes all trailing newlines. If a line was just `\n\n`, it would become empty. Normally, `next(fh)` for a file returns one line ending with one newline. Let's verify the behavior of `.rstrip('\n')` vs `[:-1]`. If `line = "foo \n"`, `line.rstrip('\n')` is `"foo "`. If `line = "foo \r\n"`, `line.rstrip('\n')` is `"foo \r"`. So `.rstrip('\r\n')` or `.rstrip('\n').rstrip('\r')` is better. Wait, if I use `rstrip('\n')`, then `\n\n` at the end of a line would be stripped. But `next(fh)` only returns one line. Let's see if `tappy` supports a specific Python version. `pyproject.toml` is not present, but `setup.py` might have it. The `Workspace Layout` shows `setup.py` and `setup.cfg`. Let's check `setup.py`. <channel|><|tool_call>call:read_file{filepath:<|"|>setup.py<|"|>}<tool_call|><|tool_response>
Generated tokens 833 tokens · stopped: STOP
It supports Python 3.5+. So no `removesuffix`.

The most common way to remove the trailing newline from a line read from a file in a cross-platform way is `.rstrip('\r\n')` or just stripping the newline character.
Actually, if we use `.rstrip('\n').rstrip('\r')`, it behaves exactly as removing the trailing newline (if it exists).

Wait, `line.rstrip('\r\n')` will strip ALL trailing newlines. For example, if a line ended in `\n\n` (though `next(fh)` should only give one line), it would strip both.
But `next(fh)` should only return one line.

Let's see what happens if we use `.rstrip('\r\n')`.
If the line is `"line  \n"`, result is `"line  "`.
If the line is `"line  \r\n"`, result is `"line  "`.
If the line is `"line\n\n"`, result is `"line"`.

Actually, the most robust way to remove the trailing newline is to use `rstrip('\n').rstrip('\r')`.

Let's try applying the fix and verify with the reproduction script.

The fix:
In `tap/parser.py`:
```python
                raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))
```
Wait, looking at `_extract_yaml_block` again:
```python
    def _extract_yaml_block(self, indent, fh):
        """Extract a raw yaml block from a file handler"""
        raw_yaml = []
        indent_match = re.compile(r"^{}".format(indent))
        try:
            next(fh)
            while indent_match.match(fh.peek()):
                raw_yaml.append(next(fh).replace(indent, "", 1))
                # check for the end and stop adding yaml if encountered
                if self.yaml_block_end.match(fh.peek()):
                    next(fh)
                    break
        except StopIteration:
            pass
        return "\n".join(raw_yaml)
```

One detail: `next(fh).replace(indent, "", 1)` might be better as `next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r')`.

Wait, the line returned by `next(fh)` still has the newline.
If we do `.replace(indent, "", 1)`, then strip the newline, we are good.

Let's refine the change.
```python
-                raw_yaml.append(next(fh).replace(indent, "", 1))
+                raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))
```

Wait, if I use `.rstrip('\n').rstrip('\r')`, I might strip trailing spaces if the line only contained newlines? No, `\n` is not a space.

Wait, if `next(fh)` returns `"  \n"`, and `indent` is `"  "`.
`"  \n".replace("  ", "", 1)` → `"\n"`.
`"\n".rstrip('\n').rstrip('\r')` → `""`.
This seems correct.

Let's verify this with a test.

It supports Python 3.5+. So no `removesuffix`. The most common way to remove the trailing newline from a line read from a file in a cross-platform way is `.rstrip('\r\n')` or just stripping the newline character. Actually, if we use `.rstrip('\n').rstrip('\r')`, it behaves exactly as removing the trailing newline (if it exists). Wait, `line.rstrip('\r\n')` will strip ALL trailing newlines. For example, if a line ended in `\n\n` (though `next(fh)` should only give one line), it would strip both. But `next(fh)` should only return one line. Let's see what happens if we use `.rstrip('\r\n')`. If the line is `"line \n"`, result is `"line "`. If the line is `"line \r\n"`, result is `"line "`. If the line is `"line\n\n"`, result is `"line"`. Actually, the most robust way to remove the trailing newline is to use `rstrip('\n').rstrip('\r')`. Let's try applying the fix and verify with the reproduction script. The fix: In `tap/parser.py`: ```python raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r')) ``` Wait, looking at `_extract_yaml_block` again: ```python def _extract_yaml_block(self, indent, fh): """Extract a raw yaml block from a file handler""" raw_yaml = [] indent_match = re.compile(r"^{}".format(indent)) try: next(fh) while indent_match.match(fh.peek()): raw_yaml.append(next(fh).replace(indent, "", 1)) # check for the end and stop adding yaml if encountered if self.yaml_block_end.match(fh.peek()): next(fh) break except StopIteration: pass return "\n".join(raw_yaml) ``` One detail: `next(fh).replace(indent, "", 1)` might be better as `next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r')`. Wait, the line returned by `next(fh)` still has the newline. If we do `.replace(indent, "", 1)`, then strip the newline, we are good. Let's refine the change. ```python - raw_yaml.append(next(fh).replace(indent, "", 1)) + raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r')) ``` Wait, if I use `.rstrip('\n').rstrip('\r')`, I might strip trailing spaces if the line only contained newlines? No, `\n` is not a space. Wait, if `next(fh)` returns `" \n"`, and `indent` is `" "`. `" \n".replace(" ", "", 1)` → `"\n"`. `"\n".rstrip('\n').rstrip('\r')` → `""`. This seems correct. Let's verify this with a test. <channel|><|tool_call>call:edit_file{filepath:<|"|>tap/parser.py<|"|>,new_string:<|"|> raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))<|"|>,old_string:<|"|> raw_yaml.append(next(fh).replace(indent, "", 1))<|"|>}<tool_call|><|tool_response>
Generated tokens 165 tokens · stopped: STOP
Now let's run the reproduction script again.
Now let's run the reproduction script again. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' import tap.parser tap_input = """TAP version 13 1..2 ok 1 A passing test --- message: test severity: fail output: |+ this is a multiline string but with tap somehow blank lines are added to it. """ parser = tap.parser.Parser() for i, l in enumerate(parser.parse_text(tap_input)): if i == 2: print("{!r}".format(l.yaml_block["output"].splitlines())) PY <|"|>}<tool_call|><|tool_response>
Generated tokens 109 tokens · stopped: STOP
The output is now:
`['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']`
This matches the expected output!

Now let's check if this change broke anything else. I'll run the existing tests in `tap/tests/test_parser.py`.

The output is now: `['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']` This matches the expected output! Now let's check if this change broke anything else. I'll run the existing tests in `tap/tests/test_parser.py`. <channel|><|tool_call>call:run_command{command:<|"|>pytest tap/tests/test_parser.py -q --tb=short --no-header<|"|>}<tool_call|><|tool_response>
Generated tokens 790 tokens · stopped: STOP
The existing tests passed.
I should also check for any other places where `_extract_yaml_block` might be called, but `grep` indicated it's only called in `_parse_result` (actually `grep` output showed line 168 is the call site).

Wait, let me double check if there are other parallel paths.
The `grep` call:
`grep -rn --include="*.py" "_extract_yaml_block" .`
Result:
`./tap/parser.py:168:        concat_yaml = self._extract_yaml_block(indent, fh)`
`./tap/parser.py:177:    def _extract_yaml_block(self, indent, fh):`

Only one implementation and one call site.

Are there any other potential issues?
If `next(fh)` doesn't end with a newline? (e.g. the last line of the file).
`"".rstrip('\n').rstrip('\r')` is `""`.
`"foo".rstrip('\n').rstrip('\r')` is `"foo"`.
So it's safe.

What if there are trailing spaces?
`"foo  \n".rstrip('\n').rstrip('\r')` is `"foo  "`.
This is correct, as trailing spaces in YAML can be significant.

Wait, one more thing. The problem statement mentioned multi-line strings in YAML blocks.
Example:
```yaml
   output: |+
     this is a multiline
     string but with tap
     somehow blank lines
     are added to it.
```
In YAML, `|+` is a literal block scalar with "keep" chomping.

If we have:
```python
    def _extract_yaml_block(self, indent, fh):
        # ...
        return "\n".join(raw_yaml)
```
If `raw_yaml` is `["output: |+", "  line 1", "  line 2"]`, result is `"output: |+\n  line 1\n  line 2"`.
This is a valid YAML string.

If we had `["output: |+\n", "  line 1\n", "  line 2\n"]`, result would be `"output: |+\n\n  line 1\n\n  line 2\n\n"`.
Which is why we had those extra blank lines.

Is there any case where `\n`.join might be wrong?
If the original file had `\r\n`, we're now joining with `\n`.
But `PyYAML` (which is used to parse the resulting string) handles both.

Let's verify if there are any other tests that might be relevant.
`tap/tests/test_parser.py` covers `Parser`.

I'll do one last check of the reproduction input to see if there are any tricky things.
The reproduction used `splitlines()`, which handles various newline types.

One last check: `_extract_yaml_block` uses `fh.peek()`. `fh` is a `peekable` iterator.
If the file ends while extracting the YAML block, `StopIteration` is caught and it returns what it has.

Let's check if any other methods in `tap/parser.py` might have similar issues.
I'll search for `"\n".join(` in `tap/parser.py`.

The existing tests passed. I should also check for any other places where `_extract_yaml_block` might be called, but `grep` indicated it's only called in `_parse_result` (actually `grep` output showed line 168 is the call site). Wait, let me double check if there are other parallel paths. The `grep` call: `grep -rn --include="*.py" "_extract_yaml_block" .` Result: `./tap/parser.py:168: concat_yaml = self._extract_yaml_block(indent, fh)` `./tap/parser.py:177: def _extract_yaml_block(self, indent, fh):` Only one implementation and one call site. Are there any other potential issues? If `next(fh)` doesn't end with a newline? (e.g. the last line of the file). `"".rstrip('\n').rstrip('\r')` is `""`. `"foo".rstrip('\n').rstrip('\r')` is `"foo"`. So it's safe. What if there are trailing spaces? `"foo \n".rstrip('\n').rstrip('\r')` is `"foo "`. This is correct, as trailing spaces in YAML can be significant. Wait, one more thing. The problem statement mentioned multi-line strings in YAML blocks. Example: ```yaml output: |+ this is a multiline string but with tap somehow blank lines are added to it. ``` In YAML, `|+` is a literal block scalar with "keep" chomping. If we have: ```python def _extract_yaml_block(self, indent, fh): # ... return "\n".join(raw_yaml) ``` If `raw_yaml` is `["output: |+", " line 1", " line 2"]`, result is `"output: |+\n line 1\n line 2"`. This is a valid YAML string. If we had `["output: |+\n", " line 1\n", " line 2\n"]`, result would be `"output: |+\n\n line 1\n\n line 2\n\n"`. Which is why we had those extra blank lines. Is there any case where `\n`.join might be wrong? If the original file had `\r\n`, we're now joining with `\n`. But `PyYAML` (which is used to parse the resulting string) handles both. Let's verify if there are any other tests that might be relevant. `tap/tests/test_parser.py` covers `Parser`. I'll do one last check of the reproduction input to see if there are any tricky things. The reproduction used `splitlines()`, which handles various newline types. One last check: `_extract_yaml_block` uses `fh.peek()`. `fh` is a `peekable` iterator. If the file ends while extracting the YAML block, `StopIteration` is caught and it returns what it has. Let's check if any other methods in `tap/parser.py` might have similar issues. I'll search for `"\n".join(` in `tap/parser.py`. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn '"\n".join(' tap/parser.py<|"|>}<tool_call|><|tool_response>
Generated tokens 68 tokens · stopped: STOP
No other `"\n".join(` in `tap/parser.py`.

I'm confident in the fix.

Let's double check the `git status` and `git diff` just in case.
No other `"\n".join(` in `tap/parser.py`. I'm confident in the fix. Let's double check the `git status` and `git diff` just in case. <channel|><|tool_call>call:run_command{command:<|"|>git status --short && git diff<|"|>}<tool_call|><|tool_response>
Generated tokens 23 tokens · stopped: STOP
The diff looks clean. I'll submit the patch.
The diff looks clean. I'll submit the patch. <channel|><|tool_call>call:submit_patch{}<tool_call|><|tool_response>

Patch, tests and logs

Final code change Included
diff --git a/tap/parser.py b/tap/parser.py
index 637436b..43e82c1 100644
--- a/tap/parser.py
+++ b/tap/parser.py
@@ -181,7 +181,7 @@ WARNING: Optional imports not found, TAP 13 output will be
         try:
             next(fh)
             while indent_match.match(fh.peek()):
-                raw_yaml.append(next(fh).replace(indent, "", 1))
+                raw_yaml.append(next(fh).replace(indent, "", 1).rstrip('\n').rstrip('\r'))
                 # check for the end and stop adding yaml if encountered
                 if self.yaml_block_end.match(fh.peek()):
                     next(fh)
Test output Included
============================= test session starts ==============================
collected 114 items

tap/tests/test_adapter.py .....                                          [  4%]
tap/tests/test_directive.py ......                                       [  9%]
tap/tests/test_formatter.py ..                                           [ 11%]
tap/tests/test_line.py .......                                           [ 17%]
tap/tests/test_loader.py .......                                         [ 23%]
tap/tests/test_main.py ......                                            [ 28%]
tap/tests/test_parser.py ...........................                     [ 52%]
tap/tests/test_result.py .........                                       [ 60%]
tap/tests/test_rules.py ........                                         [ 67%]
tap/tests/test_runner.py ........                                        [ 74%]
tap/tests/test_tracker.py .............................                  [100%]

==================================== PASSES ====================================
- generated xml file: /tmp/rebench-grade-cf9ffbab92d74ed28234fb090d4ebc44.xml --
=========================== short test summary info ============================
PASSED tap/tests/test_adapter.py::TestAdapter::test_adapter_has_filename
PASSED tap/tests/test_adapter.py::TestAdapter::test_handles_not_ok_todo_test_line
PASSED tap/tests/test_adapter.py::TestAdapter::test_handles_ok_test_line
PASSED tap/tests/test_adapter.py::TestAdapter::test_handles_ok_todo_test_line
PASSED tap/tests/test_adapter.py::TestAdapter::test_handles_skip_test_line
PASSED tap/tests/test_directive.py::TestDirective::test_finds_simplest_skip
PASSED tap/tests/test_directive.py::TestDirective::test_finds_simplest_todo
PASSED tap/tests/test_directive.py::TestDirective::test_finds_skip
PASSED tap/tests/test_directive.py::TestDirective::test_finds_todo
PASSED tap/tests/test_directive.py::TestDirective::test_skip_at_beginning
PASSED tap/tests/test_directive.py::TestDirective::test_todo_has_boundary
PASSED tap/tests/test_formatter.py::TestFormatter::test_format_exception_as_diagnostics
PASSED tap/tests/test_formatter.py::TestFormatter::test_formats_as_diagnostics
PASSED tap/tests/test_line.py::TestLine::test_line_requires_category
PASSED tap/tests/test_line.py::TestResult::test_category
PASSED tap/tests/test_line.py::TestResult::test_ok
PASSED tap/tests/test_line.py::TestResult::test_str_diagnostics
PASSED tap/tests/test_line.py::TestResult::test_str_directive
PASSED tap/tests/test_line.py::TestResult::test_str_not_ok
PASSED tap/tests/test_line.py::TestResult::test_str_ok
PASSED tap/tests/test_loader.py::TestLoader::test_errors_with_multiple_version_lines
PASSED tap/tests/test_loader.py::TestLoader::test_errors_with_version_not_on_first_line
PASSED tap/tests/test_loader.py::TestLoader::test_file_does_not_exist
PASSED tap/tests/test_loader.py::TestLoader::test_handles_directory
PASSED tap/tests/test_loader.py::TestLoader::test_handles_file
PASSED tap/tests/test_loader.py::TestLoader::test_loads_from_stream
PASSED tap/tests/test_loader.py::TestLoader::test_skip_plan_aborts_loading
PASSED tap/tests/test_main.py::TestMain::test_build_suite_from_stdin
PASSED tap/tests/test_main.py::TestMain::test_build_suite_from_stdin_dash
PASSED tap/tests/test_main.py::TestMain::test_exits_with_error
PASSED tap/tests/test_main.py::TestMain::test_get_successful_status
PASSED tap/tests/test_main.py::TestMain::test_when_no_pipe_to_stdin
PASSED tap/tests/test_main.py::TestMainModule::test_main_set_to_stream
PASSED tap/tests/test_parser.py::TestParser::test_after_hash_is_not_description
PASSED tap/tests/test_parser.py::TestParser::test_bail_out_line
PASSED tap/tests/test_parser.py::TestParser::test_diagnostic_line
PASSED tap/tests/test_parser.py::TestParser::test_errors_on_old_version
PASSED tap/tests/test_parser.py::TestParser::test_finds_description
PASSED tap/tests/test_parser.py::TestParser::test_finds_directive
PASSED tap/tests/test_parser.py::TestParser::test_finds_not_ok
PASSED tap/tests/test_parser.py::TestParser::test_finds_number
PASSED tap/tests/test_parser.py::TestParser::test_finds_ok
PASSED tap/tests/test_parser.py::TestParser::test_finds_plan
PASSED tap/tests/test_parser.py::TestParser::test_finds_plan_with_skip
PASSED tap/tests/test_parser.py::TestParser::test_finds_skip
PASSED tap/tests/test_parser.py::TestParser::test_finds_todo
PASSED tap/tests/test_parser.py::TestParser::test_finds_version
PASSED tap/tests/test_parser.py::TestParser::test_ignores_plan_with_any_non_skip_directive
PASSED tap/tests/test_parser.py::TestParser::test_malformed_yaml
PASSED tap/tests/test_parser.py::TestParser::test_parse_empty_file
PASSED tap/tests/test_parser.py::TestParser::test_parses_file
PASSED tap/tests/test_parser.py::TestParser::test_parses_mixed
PASSED tap/tests/test_parser.py::TestParser::test_parses_stdin
PASSED tap/tests/test_parser.py::TestParser::test_parses_text
PASSED tap/tests/test_parser.py::TestParser::test_parses_yaml
PASSED tap/tests/test_parser.py::TestParser::test_parses_yaml_more_complex
PASSED tap/tests/test_parser.py::TestParser::test_parses_yaml_no_association
PASSED tap/tests/test_parser.py::TestParser::test_parses_yaml_no_end
PASSED tap/tests/test_parser.py::TestParser::test_parses_yaml_no_start
PASSED tap/tests/test_parser.py::TestParser::test_unrecognizable_line
PASSED tap/tests/test_result.py::FakeTestCase::runTest
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_error
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_expected_failure
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_failure
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_skip
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_subtest_failure
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_subtest_success
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_success
PASSED tap/tests/test_result.py::TestTAPTestResult::test_adds_unexpected_success
PASSED tap/tests/test_rules.py::TestRules::test_errors_on_bail
PASSED tap/tests/test_rules.py::TestRules::test_errors_plan_not_at_end
PASSED tap/tests/test_rules.py::TestRules::test_errors_when_expected_tests_differs_from_actual
PASSED tap/tests/test_rules.py::TestRules::test_handles_skipping_plan
PASSED tap/tests/test_rules.py::TestRules::test_only_one_plan
PASSED tap/tests/test_rules.py::TestRules::test_plan_line_two
PASSED tap/tests/test_rules.py::TestRules::test_requires_plan
PASSED tap/tests/test_rules.py::TestRules::test_tracks_plan_line
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_bad_format_string
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_has_tap_test_result
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_runner_sets_tracker_for_streaming
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_runner_stream_to_devnull_for_streaming
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_runner_uses_combined
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_runner_uses_format
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_runner_uses_header
PASSED tap/tests/test_runner.py::TestTAPTestRunner::test_runner_uses_outdir
PASSED tap/tests/test_tracker.py::TestTracker::test_add_not_ok_writes_to_stream_while_streaming
PASSED tap/tests/test_tracker.py::TestTracker::test_add_ok_writes_to_stream_while_streaming
PASSED tap/tests/test_tracker.py::TestTracker::test_add_skip_writes_to_stream_while_streaming
PASSED tap/tests/test_tracker.py::TestTracker::test_adds_not_ok
PASSED tap/tests/test_tracker.py::TestTracker::test_adds_not_ok_with_diagnostics
PASSED tap/tests/test_tracker.py::TestTracker::test_adds_ok
PASSED tap/tests/test_tracker.py::TestTracker::test_adds_skip
PASSED tap/tests/test_tracker.py::TestTracker::test_combined_results_in_one_file_tap_version_12
PASSED tap/tests/test_tracker.py::TestTracker::test_combined_results_in_one_file_tap_version_13
PASSED tap/tests/test_tracker.py::TestTracker::test_does_not_write_header
PASSED tap/tests/test_tracker.py::TestTracker::test_generates_tap_reports_in_existing_outdir
PASSED tap/tests/test_tracker.py::TestTracker::test_generates_tap_reports_in_new_outdir
PASSED tap/tests/test_tracker.py::TestTracker::test_get_default_tap_file_path
PASSED tap/tests/test_tracker.py::TestTracker::test_has_test_cases
PASSED tap/tests/test_tracker.py::TestTracker::test_header_displayed_by_default
PASSED tap/tests/test_tracker.py::TestTracker::test_header_set_by_init
PASSED tap/tests/test_tracker.py::TestTracker::test_individual_report_has_no_plan_when_combined
PASSED tap/tests/test_tracker.py::TestTracker::test_results_not_combined_by_default
PASSED tap/tests/test_tracker.py::TestTracker::test_sanitizes_tap_file_path
PASSED tap/tests/test_tracker.py::TestTracker::test_streaming_does_not_write_files
PASSED tap/tests/test_tracker.py::TestTracker::test_streaming_writes_plan
PASSED tap/tests/test_tracker.py::TestTracker::test_streaming_writes_tap_version_13
PASSED tap/tests/test_tracker.py::TestTracker::test_tracker_does_not_stream_by_default
PASSED tap/tests/test_tracker.py::TestTracker::test_tracker_has_stream
PASSED tap/tests/test_tracker.py::TestTracker::test_tracks_class
PASSED tap/tests/test_tracker.py::TestTracker::test_write_plan_first_combined
PASSED tap/tests/test_tracker.py::TestTracker::test_write_plan_first_not_combined
PASSED tap/tests/test_tracker.py::TestTracker::test_write_plan_first_streaming
PASSED tap/tests/test_tracker.py::TestTracker::test_write_plan_immediate_streaming
============================= 114 passed in 0.18s ==============================
Test errors Included
Test report (JUnit) Included
<?xml version="1.0" encoding="utf-8"?><testsuites><testsuite name="pytest" errors="0" failures="0" skipped="0" tests="114" time="0.179" timestamp="2026-11-14T03:24:56.667676+00:00" hostname="1c0c4f409c1e"><testcase classname="tap.tests.test_adapter.TestAdapter" name="test_adapter_has_filename" time="0.000" /><testcase classname="tap.tests.test_adapter.TestAdapter" name="test_handles_not_ok_todo_test_line" time="0.000" /><testcase classname="tap.tests.test_adapter.TestAdapter" name="test_handles_ok_test_line" time="0.001" /><testcase classname="tap.tests.test_adapter.TestAdapter" name="test_handles_ok_todo_test_line" time="0.000" /><testcase classname="tap.tests.test_adapter.TestAdapter" name="test_handles_skip_test_line" time="0.000" /><testcase classname="tap.tests.test_directive.TestDirective" name="test_finds_simplest_skip" time="0.000" /><testcase classname="tap.tests.test_directive.TestDirective" name="test_finds_simplest_todo" time="0.000" /><testcase classname="tap.tests.test_directive.TestDirective" name="test_finds_skip" time="0.000" /><testcase classname="tap.tests.test_directive.TestDirective" name="test_finds_todo" time="0.000" /><testcase classname="tap.tests.test_directive.TestDirective" name="test_skip_at_beginning" time="0.000" /><testcase classname="tap.tests.test_directive.TestDirective" name="test_todo_has_boundary" time="0.000" /><testcase classname="tap.tests.test_formatter.TestFormatter" name="test_format_exception_as_diagnostics" time="0.000" /><testcase classname="tap.tests.test_formatter.TestFormatter" name="test_formats_as_diagnostics" time="0.000" /><testcase classname="tap.tests.test_line.TestLine" name="test_line_requires_category" time="0.000" /><testcase classname="tap.tests.test_line.TestResult" name="test_category" time="0.000" /><testcase classname="tap.tests.test_line.TestResult" name="test_ok" time="0.000" /><testcase classname="tap.tests.test_line.TestResult" name="test_str_diagnostics" time="0.000" /><testcase classname="tap.tests.test_line.TestResult" name="test_str_directive" time="0.000" /><testcase classname="tap.tests.test_line.TestResult" name="test_str_not_ok" time="0.000" /><testcase classname="tap.tests.test_line.TestResult" name="test_str_ok" time="0.000" /><testcase classname="tap.tests.test_loader.TestLoader" name="test_errors_with_multiple_version_lines" time="0.000" /><testcase classname="tap.tests.test_loader.TestLoader" name="test_errors_with_version_not_on_first_line" time="0.000" /><testcase classname="tap.tests.test_loader.TestLoader" name="test_file_does_not_exist" time="0.000" /><testcase classname="tap.tests.test_loader.TestLoader" name="test_handles_directory" time="0.000" /><testcase classname="tap.tests.test_loader.TestLoader" name="test_handles_file" time="0.000" /><testcase classname="tap.tests.test_loader.TestLoader" name="test_loads_from_stream" time="0.000" /><testcase classname="tap.tests.test_loader.TestLoader" name="test_skip_plan_aborts_loading" time="0.000" /><testcase classname="tap.tests.test_main.TestMain" name="test_build_suite_from_stdin" time="0.000" /><testcase classname="tap.tests.test_main.TestMain" name="test_build_suite_from_stdin_dash" time="0.001" /><testcase classname="tap.tests.test_main.TestMain" name="test_exits_with_error" time="0.000" /><testcase classname="tap.tests.test_main.TestMain" name="test_get_successful_status" time="0.000" /><testcase classname="tap.tests.test_main.TestMain" name="test_when_no_pipe_to_stdin" time="0.001" /><testcase classname="tap.tests.test_main.TestMainModule" name="test_main_set_to_stream" time="0.001" /><testcase classname="tap.tests.test_parser.TestParser" name="test_after_hash_is_not_description" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_bail_out_line" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_diagnostic_line" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_errors_on_old_version" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_description" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_directive" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_not_ok" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_number" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_ok" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_plan" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_plan_with_skip" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_skip" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_todo" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_finds_version" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_ignores_plan_with_any_non_skip_directive" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_malformed_yaml" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parse_empty_file" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_file" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_mixed" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_stdin" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_text" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_yaml" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_yaml_more_complex" time="0.001" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_yaml_no_association" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_yaml_no_end" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_parses_yaml_no_start" time="0.000" /><testcase classname="tap.tests.test_parser.TestParser" name="test_unrecognizable_line" time="0.000" /><testcase classname="tap.tests.test_result.FakeTestCase" name="runTest" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_error" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_expected_failure" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_failure" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_skip" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_subtest_failure" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_subtest_success" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_success" time="0.000" /><testcase classname="tap.tests.test_result.TestTAPTestResult" name="test_adds_unexpected_success" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_errors_on_bail" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_errors_plan_not_at_end" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_errors_when_expected_tests_differs_from_actual" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_handles_skipping_plan" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_only_one_plan" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_plan_line_two" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_requires_plan" time="0.000" /><testcase classname="tap.tests.test_rules.TestRules" name="test_tracks_plan_line" time="0.000" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_bad_format_string" time="0.001" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_has_tap_test_result" time="0.000" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_runner_sets_tracker_for_streaming" time="0.000" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_runner_stream_to_devnull_for_streaming" time="0.000" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_runner_uses_combined" time="0.000" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_runner_uses_format" time="0.000" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_runner_uses_header" time="0.000" /><testcase classname="tap.tests.test_runner.TestTAPTestRunner" name="test_runner_uses_outdir" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_add_not_ok_writes_to_stream_while_streaming" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_add_ok_writes_to_stream_while_streaming" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_add_skip_writes_to_stream_while_streaming" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_adds_not_ok" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_adds_not_ok_with_diagnostics" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_adds_ok" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_adds_skip" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_combined_results_in_one_file_tap_version_12" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_combined_results_in_one_file_tap_version_13" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_does_not_write_header" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_generates_tap_reports_in_existing_outdir" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_generates_tap_reports_in_new_outdir" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_get_default_tap_file_path" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_has_test_cases" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_header_displayed_by_default" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_header_set_by_init" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_individual_report_has_no_plan_when_combined" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_results_not_combined_by_default" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_sanitizes_tap_file_path" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_streaming_does_not_write_files" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_streaming_writes_plan" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_streaming_writes_tap_version_13" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_tracker_does_not_stream_by_default" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_tracker_has_stream" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_tracks_class" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_write_plan_first_combined" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_write_plan_first_not_combined" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_write_plan_first_streaming" time="0.000" /><testcase classname="tap.tests.test_tracker.TestTracker" name="test_write_plan_immediate_streaming" time="0.000" /></testsuite></testsuites>
Agent log Included
  [   0.0s] 📋 System Prompt: You are a principal Python software engineer resolving a repository issue in `/workspace`.
  [   0.0s] 🎯 Task Prompt: You are evaluating a software engineering task for repository python-tap/tappy.
  [  11.5s] 💭 (375 chars) "The user is reporting a bug in `tap.parser.Parser._extract_yaml_block()`.
The issue is that `"\n".join(raw_yaml)` is use..."
  [  11.5s] 🔧 run_command grep -rn --include="*.py" "_extract_yaml_block" .
  [  11.5s]   → ./tap/parser.py:168:        concat_yaml = self._extract_yaml_block(indent, fh)
  [  14.7s] 💭 (121 chars) "The method is in `tap/parser.py` at line 177.

Let's read the implementation of `_extract_yaml_block` in `tap/parser.py`..."
  [  14.7s] 📖 read_file (tap/parser.py)
  [  14.7s]   ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'content': '    def _extract_yaml_block(self, indent, 
fh):\n        """Ext…
  [  36.3s] 💭 (967 chars) "The implementation is:
```python
    def _extract_yaml_block(self, indent, fh):
        """Extract a raw yaml block from..."
  [  36.3s] 🔧 run_command (21 lines) python3 - <<'PY'
  [  36.5s]   → ['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to 
it.']
  [  57.9s] 💭 (932 chars) "The output matches the issue description:
`['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lin..."
  [  57.9s] 📖 read_file (tap/parser.py)
  [  57.9s]   ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'content': '\n        match = self.bail.match(text)\n     
if match:\n  …
  [  64.3s] 💭 (178 chars) "And `parse_text` probably calls `_parse_result`.

```python
    def parse_text(self, text):
        """Parse a string as..."
  [  64.3s] 📖 read_file (tap/parser.py)
  [  64.4s]   ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'content': '        """Parse a string containing one or 
more lines of TAP …
  [ 201.1s] 💭 (7135 chars) "In `parse`, each line is `rstrip()`-ed before being passed to `parse_line`.
```python
            for line in fh_new:
  ..."
  [ 201.1s] 📖 read_file (setup.py)
  [ 201.2s]   ✓ {'status': 'ok', 'filepath': 'setup.py', 'content': '# Copyright (c) 2019, Matt Layman and 
contributors\n"""\ntappy is a…
  [ 249.1s] 💭 (2509 chars) "It supports Python 3.5+. So no `removesuffix`.

The most common way to remove the trailing newline from a line read from..."
  [ 249.1s] ✏️ edit_file (tap/parser.py)
  [ 249.3s]   ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'occurrences': 1, 'strategy': 'exact', 'diff': '--- 
a/tap/parser.py\n+++ b…
  [ 257.5s] 💭 (44 chars) "Now let's run the reproduction script again."
  [ 257.5s] 🔧 run_command (21 lines) python3 - <<'PY'
  [ 257.5s]   → ['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']
  [ 265.8s] 💭 (256 chars) "The output is now:
`['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']`
This matc..."
  [ 265.8s] 🔧 run_command pytest tap/tests/test_parser.py -q --tb=short --no-header
  [ 266.2s]   → ...........................                                              [100%]
  [ 325.7s] 💭 (2415 chars) "The existing tests passed.
I should also check for any other places where `_extract_yaml_block` might be called, but `gr..."
  [ 325.7s] 🔧 run_command grep -rn '"\n".join(' tap/parser.py
  [ 325.7s]   → error (exit 0): 
  [ 329.8s] 💭 (134 chars) "No other `"\n".join(` in `tap/parser.py`.

I'm confident in the fix.

Let's double check the `git status` and `git diff`..."
  [ 329.8s] 🔧 run_command git status --short && git diff
  [ 329.8s]   →  M tap/parser.py
  [ 331.7s] 💭 (44 chars) "The diff looks clean. I'll submit the patch."
  [ 331.7s] 🤖 submit_patch
  [ 331.8s]   → submit_patch: {"status": "ok", "patch_size": 597, "files_changed": 1}
  [ 346.5s] 💭 (212 chars) "I have successfully reproduced the bug, implemented the fix by stripping trailing newline 
characters in `_extract_yaml_b..."
  [ 346.5s] ✅ Agent finished: The issue was caused by `_extract_yaml_block` in `tap/parser.py` joining lines from the 
file handler using `"\n".join()`, without first stripping the existing trailing newlines from each line. This re...
Native result row
{
  "agent_error": null,
  "duration_seconds": 351.45,
  "error": null,
  "grade": {
    "collected_tests": 114,
    "competition_junit_ok": true,
    "error": null,
    "required_issues_count": 0,
    "resolved": true,
    "status_counts": {
      "PASSED": 114
    },
    "strict_clean_patch": true,
    "test_exit_code": 0
  },
  "instance_id": "python-tap__tappy-112",
  "pass_idx": 0,
  "patch_chars": 597,
  "phase1_seconds": 350.45,
  "repo": "python-tap/tappy",
  "request_log_path": "/kaggle-root/working/r31/rollouts_X/requests/python-tap__tappy-112__p0__r3.jsonl",
  "resolved": true,
  "rollout_idx": 3,
  "run_key": "python-tap__tappy-112__p0__r3",
  "strict_clean_patch": true,
  "tool_calls": 11,
  "total_llm_calls": 13,
  "trace_path": "/kaggle-root/working/r31/rollouts_X/traces/trace_python-tap__tappy-112__p0__r3.json"
}