ROLLOUT 1 · python-tap/tappy
python-tap__tappy-112
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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%`.
[](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 15 s192 tokens out3,856 prompt tokens
The user is reporting an issue where `_extract_yaml_block()` in `tap.parser` adds extra newlines to multi-line strings in YAML blocks because it uses `"\n".join(raw_yaml)` without stripping the newline characters from each line in `raw_yaml`. I need to: 1. Locate `_extract_yaml_block` in `tap/parser.py`. 2. Create a reproduction script to confirm the bug. 3. Fix the bug by stripping newlines from each line in `raw_yaml` before joining them. 4. Verify the fix with the reproduction script and existing tests. Let's start by locating `_extract_yaml_block` 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 19 s71 tokens out4,142 prompt tokens
Okay, `_extract_yaml_block` is in `tap/parser.py` starting at line 177. Let's read the implementation.
TOOL CALL · read_file
{
"end_line": 220,
"filepath": "tap/parser.py",
"start_line": 170
}Result of read_file 1,318 characters
{
"status": "ok",
"filepath": "tap/parser.py",
"content": " 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\n 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": 170,
"end_line": 199,
"total_lines": 199,
"is_truncated": false
}Turn 3at 38 s372 tokens out4,601 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 problem is that `next(fh)` returns lines that still have their trailing newline characters. Then `"\n".join(raw_yaml)` adds another newline between them.
Let's reproduce this using the example provided in the issue.
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 51 s173 tokens out5,044 prompt tokens
The reproduction confirms the bug. The output has empty strings between the actual lines of the multiline string.
The fix should be to strip the trailing newline from each line added to `raw_yaml`.
Wait, the lines from `fh` (which is likely an iterator of lines from a file or `io.StringIO`) will have `\n` at the end.
If I use `.rstrip('\n')` or just `.rstrip('\r\n')`, it should fix it.
Wait, `next(fh)` where `fh` is what `parse_text` uses. Let's see how `parse_text` is implemented.
TOOL CALL · read_file
{
"end_line": 170,
"filepath": "tap/parser.py",
"start_line": 140
}Result of read_file 1,323 characters
{
"status": "ok",
"filepath": "tap/parser.py",
"content": "\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,",
"start_line": 140,
"end_line": 170,
"total_lines": 199,
"is_truncated": false
}Turn 5at 53 s46 tokens out5,596 prompt tokens
I need to see `parse_text`.
TOOL CALL · read_file
{
"end_line": 140,
"filepath": "tap/parser.py",
"start_line": 100
}Result of read_file 1,534 characters
{
"status": "ok",
"filepath": "tap/parser.py",
"content": " 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)\n if match:\n return self._parse_result(False, match, fh)\n\n if self.diagnostic.match(text):\n return Diagnostic(text)\n\n match = self.plan.match(text)\n if match:\n return self._parse_plan(match)\n\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",
"start_line": 100,
"end_line": 140,
"total_lines": 199,
"is_truncated": false
}Turn 6at 56 s55 tokens out6,098 prompt tokens
Wait, `parse_text` is not fully visible. Let me read it from the beginning.
TOOL CALL · read_file
{
"end_line": 100,
"filepath": "tap/parser.py",
"start_line": 1
}Result of read_file 3,708 characters
{
"status": "ok",
"filepath": "tap/parser.py",
"content": "# Copyright (c) 2019, Matt Layman and contributors\n\nfrom io import StringIO\nimport itertools\nimport re\nimport sys\n\nfrom tap.directive import Directive\nfrom tap.i18n import _\nfrom tap.line import Bail, Diagnostic, Plan, Result, Unknown, Version\n\ntry:\n from more_itertools import peekable\n import yaml # noqa\n\n ENABLE_VERSION_13 = True\nexcept ImportError: # pragma: no cover\n ENABLE_VERSION_13 = False\n\n\nclass Parser(object):\n \"\"\"A parser for TAP files and lines.\"\"\"\n\n # ok and not ok share most of the same characteristics.\n result_base = r\"\"\"\n \\s* # Optional whitespace.\n (?P<number>\\d*) # Optional test number.\n \\s* # Optional whitespace.\n (?P<description>[^#]*) # Optional description before #.\n \\#? # Optional directive marker.\n \\s* # Optional whitespace.\n (?P<directive>.*) # Optional directive text.\n \"\"\"\n ok = re.compile(r\"^ok\" + result_base, re.VERBOSE)\n not_ok = re.compile(r\"^not\\ ok\" + result_base, re.VERBOSE)\n plan = re.compile(\n r\"\"\"\n ^1..(?P<expected>\\d+) # Match the plan details.\n [^#]* # Consume any non-hash character to confirm only\n # directives appear with the plan details.\n \\#? # Optional directive marker.\n \\s* # Optional whitespace.\n (?P<directive>.*) # Optional directive text.\n \"\"\",\n re.VERBOSE,\n )\n diagnostic = re.compile(r\"^#\")\n bail = re.compile(\n r\"\"\"\n ^Bail\\ out!\n \\s* # Optional whitespace.\n (?P<reason>.*) # Optional reason.\n \"\"\",\n re.VERBOSE,\n )\n version = re.compile(r\"^TAP version (?P<version>\\d+)$\")\n\n yaml_block_start = re.compile(r\"^(?P<indent>\\s+)-\")\n yaml_block_end = re.compile(r\"^\\s+\\.\\.\\.\")\n\n TAP_MINIMUM_DECLARED_VERSION = 13\n\n def parse_file(self, filename):\n \"\"\"Parse a TAP file to an iterable of tap.line.Line objects.\n\n This is a generator method that will yield an object for each\n parsed line. The file given by `filename` is assumed to exist.\n \"\"\"\n return self.parse(open(filename, \"r\"))\n\n def parse_stdin(self):\n \"\"\"Parse a TAP stream from standard input.\n\n Note: this has the side effect of closing the standard input\n filehandle after parsing.\n \"\"\"\n return self.parse(sys.stdin)\n\n def parse_text(self, text):\n \"\"\"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:",
"start_line": 1,
"end_line": 100,
"total_lines": 199,
"is_truncated": false
}Turn 7at 153 s1,743 tokens out7,225 prompt tokens
In `parse(self, fh)`:
```python
first_parsed = self.parse_line(first_line.rstrip())
fh_new = itertools.chain([first_line], fh)
if first_parsed.category == "version" and first_parsed.version >= 13:
if ENABLE_VERSION_13:
fh_new = peekable(itertools.chain([first_line], fh))
```
And then:
```python
for line in fh_new:
yield self.parse_line(line.rstrip(), fh_new)
```
The `line` passed to `parse_line` has `rstrip()` called on it.
However, if it goes into `_parse_result` and then `_extract_yaml_block`, it uses `fh_new` (the `peekable` iterator).
```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))
```
`next(fh)` gives the line WITH the newline (because `fh_new` is just `itertools.chain([first_line], fh)` and `fh` is a `StringIO` or file handle).
So `raw_yaml.append(next(fh).replace(indent, "", 1))` adds a line with its trailing newline.
Then `"\n".join(raw_yaml)` adds another newline.
Correct. I should use `.rstrip('\n')` or similar on the line.
Wait, TAP 13 YAML blocks are indented. The indentation should be removed, and the trailing newline should be removed.
Actually, if I use `rstrip('\n')`, it might remove trailing spaces that are part of the YAML content (though unlikely in many cases, it's better to be precise). `rstrip('\n')` only removes the trailing newline. But YAML multi-line strings might have different newline conventions.
Actually, `next(fh)` on a `StringIO` or file in text mode returns lines with `\n` (or `\r\n` depending on `newline` parameter of `open`).
If I use `rstrip('\n')`, it will remove the trailing newline. But if there are multiple trailing newlines, it will remove all of them. `rstrip()` without arguments removes all trailing whitespace.
The problem description says: `_extract_yaml_block()` performs `"\n".join(raw_yaml)` without having stripped the newline character in each possible line.
So I should strip the trailing newline.
`next(fh).replace(indent, "", 1).rstrip('\n')` or `rstrip('\r\n')`.
Wait, `rstrip('\n')` will remove multiple trailing newlines.
If I want to remove only one newline at the end, I could use `line[:-1]` if it ends with `\n`.
But usually `rstrip('\n')` is what is expected for this kind of thing in Python.
Actually, let's check how other things are handled.
In `parse(self, fh)`:
```python
for line in fh_new:
yield self.parse_line(line.rstrip(), fh_new)
```
`line.rstrip()` removes ALL trailing whitespace.
If the YAML block is:
```yaml
output: |+
this is a multiline
string but with tap
somehow blank lines
are added to it.
```
The lines in `fh` are:
`" this is a multiline\n"`
`" string but with tap\n"`
`" somehow blank lines\n"`
`" are added to it.\n"`
`indent` is `" "`. (Wait, in the example if the line is ` ---`, then `indent_match` matches ` `? No, `yaml_block_start` matches `^(?P<indent>\s+)-`).
In the example:
```
---
message: test
severity: fail
output: |+
this is a multiline
string but with tap
somehow blank lines
are added to it.
```
The line starting with `---` has indent ` `.
`_extract_yaml_block` is called with `indent=" "`.
Then `next(fh)` consumes `---`.
Then it reads lines that start with `" "`.
Wait, the lines are:
`" message: test\n"`
`" severity: fail\n"`
`" output: |+\n"`
`" this is a multiline\n"`
`" string but with tap\n"`
...
`next(fh).replace(indent, "", 1)` will result in:
`"message: test\n"`
`"severity: fail\n"`
`"output: |+\n"`
`" this is a multiline\n"`
`" string but with tap\n"`
...
Then `"\n".join()` makes it:
`"message: test\n\nseverity: fail\n\noutput: |+\n\n this is a multiline\n\n string but with tap\n\n..."`
This is exactly what is happening.
I should use `rstrip('\n')` or `rstrip('\r\n')`.
Actually, in Python, if the file is opened in text mode, `\r\n` is translated to `\n`. So `rstrip('\n')` should suffice.
Wait, if I use `.rstrip('\n')`, I remove all trailing newlines. What if the YAML content has trailing newlines?
Multi-line strings in YAML preserve newlines.
If the input was:
```
line 1
line 3
```
The lines from `fh` would be:
`" line 1\n"`
`" \n"`
`" line 3\n"`
`next(fh).replace(indent, "", 1)` would be:
`"line 1\n"`
`"\n"`
`"line 3\n"`
Join with `\n`:
`"line 1\n\n\n\nline 3\n"` (roughly)
If I use `.rstrip('\n')`:
`"line 1"`
`""`
`"line 3"`
Join with `\n`:
`"line 1\n\nline 3"`
This is correct.
Wait, if I use `rstrip('\n')`, and the line was `" line 1\n\n"`, it would become `"line 1"`. But `next(fh)` on a file usually returns only one newline (the terminator).
Let's try `.rstrip('\n')`.
One more thing: the `yaml_block_end` is `^\\s+\\.\\.\\.`.
```python
if self.yaml_block_end.match(fh.peek()):
next(fh)
break
```
This marks the end of the YAML block.
Let's implement the fix and verify.
TOOL CALL · edit_file
{
"filepath": "tap/parser.py",
"new_string": " raw_yaml.append(next(fh).replace(indent, \\\"\\\", 1).rstrip(\\\"\\\\n\\\"))",
"old_string": " raw_yaml.append(next(fh).replace(indent, \\\"\\\", 1))"
}Result of edit_file 593 characters
{
"status": "ok",
"filepath": "tap/parser.py",
"occurrences": 1,
"strategy": "unescaped",
"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\"))\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 159 s165 tokens out9,176 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 165 s83 tokens out9,407 prompt tokens
Great! The reproduction script now produces the expected output. Now I should run existing tests to make sure I haven't broken anything. The tests for the parser are 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 172 s87 tokens out9,551 prompt tokens
Everything passed. I should also check if there are other tests that might be relevant. `tap/tests/test_result.py` might also be relevant since `_extract_yaml_block` is used when creating `Result` objects.
TOOL CALL · run_command
{
"command": "pytest tap/tests/test_result.py -q --tb=short --no-header"
}Result of run_command 160 characters
{
"status": "ok",
"stdout": "......... [100%]\n9 passed in 0.02s\n",
"stderr": "",
"exit_code": 0
}Turn 11at 198 s394 tokens out9,698 prompt tokens
All good.
Let me double check if I need to consider other newLine characters like `\r\n`.
If the file is opened in text mode (default for `open()` and `StringIO`), Python's universal newlines handle `\r\n` and convert them to `\n`.
Since `parse_text` uses `StringIO(text)`, it will use universal newlines.
`parse_file` uses `open(filename, "r")`, which also uses universal newlines.
So `.rstrip('\n')` should be sufficient.
Wait, what if the YAML block ends with an actual empty line?
Example:
```yaml
output: |+
line 1
line 3
```
Lines in `fh`:
`" line 1\n"`
`" \n"`
`" line 3\n"`
With `rstrip('\n')`:
`"line 1"`
`""`
`"line 3"`
Joined by `\n`: `"line 1\n\nline 3"`.
This is correct.
What if the line has trailing spaces?
`" line 1 \n"`
`rstrip('\n')` -> `"line 1 "`.
This preserves the trailing spaces, which is correct for YAML.
If I had used `rstrip()`, it would have removed the trailing spaces.
So `.rstrip('\n')` is precisely what is needed.
Is there any other parallel path?
The `_extract_yaml_block` is only used in `_parse_result`.
The `Parser` class is the only one using it.
Let's verify the diff.
TOOL CALL · run_command
{
"command": "git status --short && git diff"
}Result of run_command 682 characters
{
"status": "ok",
"stdout": " M tap/parser.py\ndiff --git a/tap/parser.py b/tap/parser.py\nindex 637436b..6cc2dc9 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\"))\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 208 s118 tokens out10,345 prompt tokens
The diff looks clean and minimal. I have verified it with a reproduction script and existing tests. Final check on the problem statement: "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." My fix exactly addresses this by stripping the newline character from each line before adding it to `raw_yaml`. I'm confident.
TOOL CALL · submit_patch
Result of submit_patch 55 characters
{
"status": "ok",
"patch_size": 584,
"files_changed": 1
}Turn 13at 216 s116 tokens out10,502 prompt tokens
Completed the task.
Turn 14at 216 s
The `_extract_yaml_block` method in `tap/parser.py` was incorrectly adding extra newlines when processing YAML blocks because it joined lines (which already contained trailing newlines from the file handler) with another `\n` character. I fixed this by applying `.rstrip('\n')` to each line extracted from the file handler before adding it to the `raw_yaml` list. This ensures that the final `"\n".join(raw_yaml)` produces the intended YAML content without introducing unwanted empty lines.
Model calls (not matched to turns)
Generated tokens 192 tokens · stopped: STOP
The user is reporting an issue where `_extract_yaml_block()` in `tap.parser` adds extra newlines to multi-line strings in YAML blocks because it uses `"\n".join(raw_yaml)` without stripping the newline characters from each line in `raw_yaml`. I need to: 1. Locate `_extract_yaml_block` in `tap/parser.py`. 2. Create a reproduction script to confirm the bug. 3. Fix the bug by stripping newlines from each line in `raw_yaml` before joining them. 4. Verify the fix with the reproduction script and existing tests. Let's start by locating `_extract_yaml_block` in `tap/parser.py`.
<|channel>thought
The user is reporting an issue where `_extract_yaml_block()` in `tap.parser` adds extra newlines to multi-line strings in YAML blocks because it uses `"\n".join(raw_yaml)` without stripping the newline characters from each line in `raw_yaml`.
I need to:
1. Locate `_extract_yaml_block` in `tap/parser.py`.
2. Create a reproduction script to confirm the bug.
3. Fix the bug by stripping newlines from each line in `raw_yaml` before joining them.
4. Verify the fix with the reproduction script and existing tests.
Let's start by locating `_extract_yaml_block` in `tap/parser.py`.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn --include="*.py" "_extract_yaml_block" .<|"|>}<tool_call|><|tool_response>
Generated tokens 71 tokens · stopped: STOP
Okay, `_extract_yaml_block` is in `tap/parser.py` starting at line 177. Let's read the implementation.
Okay, `_extract_yaml_block` is in `tap/parser.py` starting at line 177. Let's read the implementation.
<channel|><|tool_call>call:read_file{filepath:<|"|>tap/parser.py<|"|>,start_line:170,end_line:220}<tool_call|><|tool_response>
Generated tokens 372 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 problem is that `next(fh)` returns lines that still have their trailing newline characters. Then `"\n".join(raw_yaml)` adds another newline between them.
Let's reproduce this using the example provided in the issue.
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 problem is that `next(fh)` returns lines that still have their trailing newline characters. Then `"\n".join(raw_yaml)` adds another newline between them.
Let's reproduce this using the example provided in the issue.
<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 173 tokens · stopped: STOP
The reproduction confirms the bug. The output has empty strings between the actual lines of the multiline string.
The fix should be to strip the trailing newline from each line added to `raw_yaml`.
Wait, the lines from `fh` (which is likely an iterator of lines from a file or `io.StringIO`) will have `\n` at the end.
If I use `.rstrip('\n')` or just `.rstrip('\r\n')`, it should fix it.
Wait, `next(fh)` where `fh` is what `parse_text` uses. Let's see how `parse_text` is implemented.
The reproduction confirms the bug. The output has empty strings between the actual lines of the multiline string.
The fix should be to strip the trailing newline from each line added to `raw_yaml`.
Wait, the lines from `fh` (which is likely an iterator of lines from a file or `io.StringIO`) will have `\n` at the end.
If I use `.rstrip('\n')` or just `.rstrip('\r\n')`, it should fix it.
Wait, `next(fh)` where `fh` is what `parse_text` uses. Let's see how `parse_text` is implemented.
<channel|><|tool_call>call:read_file{end_line:170,filepath:<|"|>tap/parser.py<|"|>,start_line:140}<tool_call|><|tool_response>
Generated tokens 46 tokens · stopped: STOP
I need to see `parse_text`.
I need to see `parse_text`.
<channel|><|tool_call>call:read_file{end_line:140,filepath:<|"|>tap/parser.py<|"|>,start_line:100}<tool_call|><|tool_response>
Generated tokens 55 tokens · stopped: STOP
Wait, `parse_text` is not fully visible. Let me read it from the beginning.
Wait, `parse_text` is not fully visible. Let me read it from the beginning.
<channel|><|tool_call>call:read_file{end_line:100,filepath:<|"|>tap/parser.py<|"|>,start_line:1}<tool_call|><|tool_response>
Generated tokens 1,743 tokens · stopped: STOP
In `parse(self, fh)`:
```python
first_parsed = self.parse_line(first_line.rstrip())
fh_new = itertools.chain([first_line], fh)
if first_parsed.category == "version" and first_parsed.version >= 13:
if ENABLE_VERSION_13:
fh_new = peekable(itertools.chain([first_line], fh))
```
And then:
```python
for line in fh_new:
yield self.parse_line(line.rstrip(), fh_new)
```
The `line` passed to `parse_line` has `rstrip()` called on it.
However, if it goes into `_parse_result` and then `_extract_yaml_block`, it uses `fh_new` (the `peekable` iterator).
```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))
```
`next(fh)` gives the line WITH the newline (because `fh_new` is just `itertools.chain([first_line], fh)` and `fh` is a `StringIO` or file handle).
So `raw_yaml.append(next(fh).replace(indent, "", 1))` adds a line with its trailing newline.
Then `"\n".join(raw_yaml)` adds another newline.
Correct. I should use `.rstrip('\n')` or similar on the line.
Wait, TAP 13 YAML blocks are indented. The indentation should be removed, and the trailing newline should be removed.
Actually, if I use `rstrip('\n')`, it might remove trailing spaces that are part of the YAML content (though unlikely in many cases, it's better to be precise). `rstrip('\n')` only removes the trailing newline. But YAML multi-line strings might have different newline conventions.
Actually, `next(fh)` on a `StringIO` or file in text mode returns lines with `\n` (or `\r\n` depending on `newline` parameter of `open`).
If I use `rstrip('\n')`, it will remove the trailing newline. But if there are multiple trailing newlines, it will remove all of them. `rstrip()` without arguments removes all trailing whitespace.
The problem description says: `_extract_yaml_block()` performs `"\n".join(raw_yaml)` without having stripped the newline character in each possible line.
So I should strip the trailing newline.
`next(fh).replace(indent, "", 1).rstrip('\n')` or `rstrip('\r\n')`.
Wait, `rstrip('\n')` will remove multiple trailing newlines.
If I want to remove only one newline at the end, I could use `line[:-1]` if it ends with `\n`.
But usually `rstrip('\n')` is what is expected for this kind of thing in Python.
Actually, let's check how other things are handled.
In `parse(self, fh)`:
```python
for line in fh_new:
yield self.parse_line(line.rstrip(), fh_new)
```
`line.rstrip()` removes ALL trailing whitespace.
If the YAML block is:
```yaml
output: |+
this is a multiline
string but with tap
somehow blank lines
are added to it.
```
The lines in `fh` are:
`" this is a multiline\n"`
`" string but with tap\n"`
`" somehow blank lines\n"`
`" are added to it.\n"`
`indent` is `" "`. (Wait, in the example if the line is ` ---`, then `indent_match` matches ` `? No, `yaml_block_start` matches `^(?P<indent>\s+)-`).
In the example:
```
---
message: test
severity: fail
output: |+
this is a multiline
string but with tap
somehow blank lines
are added to it.
```
The line starting with `---` has indent ` `.
`_extract_yaml_block` is called with `indent=" "`.
Then `next(fh)` consumes `---`.
Then it reads lines that start with `" "`.
Wait, the lines are:
`" message: test\n"`
`" severity: fail\n"`
`" output: |+\n"`
`" this is a multiline\n"`
`" string but with tap\n"`
...
`next(fh).replace(indent, "", 1)` will result in:
`"message: test\n"`
`"severity: fail\n"`
`"output: |+\n"`
`" this is a multiline\n"`
`" string but with tap\n"`
...
Then `"\n".join()` makes it:
`"message: test\n\nseverity: fail\n\noutput: |+\n\n this is a multiline\n\n string but with tap\n\n..."`
This is exactly what is happening.
I should use `rstrip('\n')` or `rstrip('\r\n')`.
Actually, in Python, if the file is opened in text mode, `\r\n` is translated to `\n`. So `rstrip('\n')` should suffice.
Wait, if I use `.rstrip('\n')`, I remove all trailing newlines. What if the YAML content has trailing newlines?
Multi-line strings in YAML preserve newlines.
If the input was:
```
line 1
line 3
```
The lines from `fh` would be:
`" line 1\n"`
`" \n"`
`" line 3\n"`
`next(fh).replace(indent, "", 1)` would be:
`"line 1\n"`
`"\n"`
`"line 3\n"`
Join with `\n`:
`"line 1\n\n\n\nline 3\n"` (roughly)
If I use `.rstrip('\n')`:
`"line 1"`
`""`
`"line 3"`
Join with `\n`:
`"line 1\n\nline 3"`
This is correct.
Wait, if I use `rstrip('\n')`, and the line was `" line 1\n\n"`, it would become `"line 1"`. But `next(fh)` on a file usually returns only one newline (the terminator).
Let's try `.rstrip('\n')`.
One more thing: the `yaml_block_end` is `^\\s+\\.\\.\\.`.
```python
if self.yaml_block_end.match(fh.peek()):
next(fh)
break
```
This marks the end of the YAML block.
Let's implement the fix and verify.
In `parse(self, fh)`:
```python
first_parsed = self.parse_line(first_line.rstrip())
fh_new = itertools.chain([first_line], fh)
if first_parsed.category == "version" and first_parsed.version >= 13:
if ENABLE_VERSION_13:
fh_new = peekable(itertools.chain([first_line], fh))
```
And then:
```python
for line in fh_new:
yield self.parse_line(line.rstrip(), fh_new)
```
The `line` passed to `parse_line` has `rstrip()` called on it.
However, if it goes into `_parse_result` and then `_extract_yaml_block`, it uses `fh_new` (the `peekable` iterator).
```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))
```
`next(fh)` gives the line WITH the newline (because `fh_new` is just `itertools.chain([first_line], fh)` and `fh` is a `StringIO` or file handle).
So `raw_yaml.append(next(fh).replace(indent, "", 1))` adds a line with its trailing newline.
Then `"\n".join(raw_yaml)` adds another newline.
Correct. I should use `.rstrip('\n')` or similar on the line.
Wait, TAP 13 YAML blocks are indented. The indentation should be removed, and the trailing newline should be removed.
Actually, if I use `rstrip('\n')`, it might remove trailing spaces that are part of the YAML content (though unlikely in many cases, it's better to be precise). `rstrip('\n')` only removes the trailing newline. But YAML multi-line strings might have different newline conventions.
Actually, `next(fh)` on a `StringIO` or file in text mode returns lines with `\n` (or `\r\n` depending on `newline` parameter of `open`).
If I use `rstrip('\n')`, it will remove the trailing newline. But if there are multiple trailing newlines, it will remove all of them. `rstrip()` without arguments removes all trailing whitespace.
The problem description says: `_extract_yaml_block()` performs `"\n".join(raw_yaml)` without having stripped the newline character in each possible line.
So I should strip the trailing newline.
`next(fh).replace(indent, "", 1).rstrip('\n')` or `rstrip('\r\n')`.
Wait, `rstrip('\n')` will remove multiple trailing newlines.
If I want to remove only one newline at the end, I could use `line[:-1]` if it ends with `\n`.
But usually `rstrip('\n')` is what is expected for this kind of thing in Python.
Actually, let's check how other things are handled.
In `parse(self, fh)`:
```python
for line in fh_new:
yield self.parse_line(line.rstrip(), fh_new)
```
`line.rstrip()` removes ALL trailing whitespace.
If the YAML block is:
```yaml
output: |+
this is a multiline
string but with tap
somehow blank lines
are added to it.
```
The lines in `fh` are:
`" this is a multiline\n"`
`" string but with tap\n"`
`" somehow blank lines\n"`
`" are added to it.\n"`
`indent` is `" "`. (Wait, in the example if the line is ` ---`, then `indent_match` matches ` `? No, `yaml_block_start` matches `^(?P<indent>\s+)-`).
In the example:
```
---
message: test
severity: fail
output: |+
this is a multiline
string but with tap
somehow blank lines
are added to it.
```
The line starting with `---` has indent ` `.
`_extract_yaml_block` is called with `indent=" "`.
Then `next(fh)` consumes `---`.
Then it reads lines that start with `" "`.
Wait, the lines are:
`" message: test\n"`
`" severity: fail\n"`
`" output: |+\n"`
`" this is a multiline\n"`
`" string but with tap\n"`
...
`next(fh).replace(indent, "", 1)` will result in:
`"message: test\n"`
`"severity: fail\n"`
`"output: |+\n"`
`" this is a multiline\n"`
`" string but with tap\n"`
...
Then `"\n".join()` makes it:
`"message: test\n\nseverity: fail\n\noutput: |+\n\n this is a multiline\n\n string but with tap\n\n..."`
This is exactly what is happening.
I should use `rstrip('\n')` or `rstrip('\r\n')`.
Actually, in Python, if the file is opened in text mode, `\r\n` is translated to `\n`. So `rstrip('\n')` should suffice.
Wait, if I use `.rstrip('\n')`, I remove all trailing newlines. What if the YAML content has trailing newlines?
Multi-line strings in YAML preserve newlines.
If the input was:
```
line 1
line 3
```
The lines from `fh` would be:
`" line 1\n"`
`" \n"`
`" line 3\n"`
`next(fh).replace(indent, "", 1)` would be:
`"line 1\n"`
`"\n"`
`"line 3\n"`
Join with `\n`:
`"line 1\n\n\n\nline 3\n"` (roughly)
If I use `.rstrip('\n')`:
`"line 1"`
`""`
`"line 3"`
Join with `\n`:
`"line 1\n\nline 3"`
This is correct.
Wait, if I use `rstrip('\n')`, and the line was `" line 1\n\n"`, it would become `"line 1"`. But `next(fh)` on a file usually returns only one newline (the terminator).
Let's try `.rstrip('\n')`.
One more thing: the `yaml_block_end` is `^\\s+\\.\\.\\.`.
```python
if self.yaml_block_end.match(fh.peek()):
next(fh)
break
```
This marks the end of the YAML block.
Let's implement the fix and verify.
<channel|><|tool_call>call:edit_file{filepath:<|"|>tap/parser.py<|"|>,new_string:<|"|> raw_yaml.append(next(fh).replace(indent, \"\", 1).rstrip(\"\\n\"))<|"|>,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 83 tokens · stopped: STOP
Great! The reproduction script now produces the expected output. Now I should run existing tests to make sure I haven't broken anything. The tests for the parser are in `tap/tests/test_parser.py`.
Great! The reproduction script now produces the expected output.
Now I should run existing tests to make sure I haven't broken anything.
The tests for the parser are 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 87 tokens · stopped: STOP
Everything passed. I should also check if there are other tests that might be relevant. `tap/tests/test_result.py` might also be relevant since `_extract_yaml_block` is used when creating `Result` objects.
Everything passed. I should also check if there are other tests that might be relevant.
`tap/tests/test_result.py` might also be relevant since `_extract_yaml_block` is used when creating `Result` objects.
<channel|><|tool_call>call:run_command{command:<|"|>pytest tap/tests/test_result.py -q --tb=short --no-header<|"|>}<tool_call|><|tool_response>
Generated tokens 394 tokens · stopped: STOP
All good.
Let me double check if I need to consider other newLine characters like `\r\n`.
If the file is opened in text mode (default for `open()` and `StringIO`), Python's universal newlines handle `\r\n` and convert them to `\n`.
Since `parse_text` uses `StringIO(text)`, it will use universal newlines.
`parse_file` uses `open(filename, "r")`, which also uses universal newlines.
So `.rstrip('\n')` should be sufficient.
Wait, what if the YAML block ends with an actual empty line?
Example:
```yaml
output: |+
line 1
line 3
```
Lines in `fh`:
`" line 1\n"`
`" \n"`
`" line 3\n"`
With `rstrip('\n')`:
`"line 1"`
`""`
`"line 3"`
Joined by `\n`: `"line 1\n\nline 3"`.
This is correct.
What if the line has trailing spaces?
`" line 1 \n"`
`rstrip('\n')` -> `"line 1 "`.
This preserves the trailing spaces, which is correct for YAML.
If I had used `rstrip()`, it would have removed the trailing spaces.
So `.rstrip('\n')` is precisely what is needed.
Is there any other parallel path?
The `_extract_yaml_block` is only used in `_parse_result`.
The `Parser` class is the only one using it.
Let's verify the diff.
All good.
Let me double check if I need to consider other newLine characters like `\r\n`.
If the file is opened in text mode (default for `open()` and `StringIO`), Python's universal newlines handle `\r\n` and convert them to `\n`.
Since `parse_text` uses `StringIO(text)`, it will use universal newlines.
`parse_file` uses `open(filename, "r")`, which also uses universal newlines.
So `.rstrip('\n')` should be sufficient.
Wait, what if the YAML block ends with an actual empty line?
Example:
```yaml
output: |+
line 1
line 3
```
Lines in `fh`:
`" line 1\n"`
`" \n"`
`" line 3\n"`
With `rstrip('\n')`:
`"line 1"`
`""`
`"line 3"`
Joined by `\n`: `"line 1\n\nline 3"`.
This is correct.
What if the line has trailing spaces?
`" line 1 \n"`
`rstrip('\n')` -> `"line 1 "`.
This preserves the trailing spaces, which is correct for YAML.
If I had used `rstrip()`, it would have removed the trailing spaces.
So `.rstrip('\n')` is precisely what is needed.
Is there any other parallel path?
The `_extract_yaml_block` is only used in `_parse_result`.
The `Parser` class is the only one using it.
Let's verify the diff.
<channel|><|tool_call>call:run_command{command:<|"|>git status --short && git diff<|"|>}<tool_call|><|tool_response>
Generated tokens 118 tokens · stopped: STOP
The diff looks clean and minimal. I have verified it with a reproduction script and existing tests. Final check on the problem statement: "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." My fix exactly addresses this by stripping the newline character from each line before adding it to `raw_yaml`. I'm confident.
The diff looks clean and minimal. I have verified it with a reproduction script and existing tests.
Final check on the problem statement: "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."
My fix exactly addresses this by stripping the newline character from each line before adding it to `raw_yaml`.
I'm confident.
<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..6cc2dc9 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"))
# 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-2159cd45a24146db8111fb659ebad849.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="0.184" timestamp="2026-11-14T03:22:44.794732+00:00" hostname="c8bb2e1a724e"><testcase classname="tap.tests.test_adapter.TestAdapter" name="test_adapter_has_filename" time="0.001" /><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="0.000" /><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="0.001" /><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.
[ 13.7s] 💭 (579 chars) "The user is reporting an issue where `_extract_yaml_block()` in `tap.parser` adds extra
newlines to multi-line strings i..."
[ 13.7s] 🔧 run_command grep -rn --include="*.py" "_extract_yaml_block" .
[ 13.8s] → ./tap/parser.py:168: concat_yaml = self._extract_yaml_block(indent, fh)
[ 17.7s] 💭 (102 chars) "Okay, `_extract_yaml_block` is in `tap/parser.py` starting at line 177. Let's read the
implementation."
[ 17.7s] 📖 read_file (tap/parser.py)
[ 17.8s] ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'content': ' ok,\n
number=match.group("number"),\n …
[ 36.4s] 💭 (857 chars) "The implementation is:
```python
def _extract_yaml_block(self, indent, fh):
"""Extract a raw yaml block from..."
[ 36.4s] 🔧 run_command (21 lines) python3 - <<'PY'
[ 36.6s] → ['', 'this is a multiline', '', 'string but with tap', '', 'somehow blank lines', '', 'are added to
it.']
[ 49.7s] 💭 (488 chars) "The reproduction confirms the bug. The output has empty strings between the actual lines of
the multiline string.
The f..."
[ 49.7s] 📖 read_file (tap/parser.py)
[ 49.8s] ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'content': '\n def _parse_plan(self, match):\n
"""Parse a matchi…
[ 51.9s] 💭 (27 chars) "I need to see `parse_text`."
[ 51.9s] 📖 read_file (tap/parser.py)
[ 51.9s] ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'content': ' if first_parsed.category ==
"version" and first_pa…
[ 54.6s] 💭 (75 chars) "Wait, `parse_text` is not fully visible. Let me read it from the beginning."
[ 54.6s] 📖 read_file (tap/parser.py)
[ 54.7s] ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'content': '# Copyright (c) 2019, Matt Layman and
contributors\n\nfrom io …
[ 151.4s] 💭 (5281 chars) "In `parse(self, fh)`:
```python
first_parsed = self.parse_line(first_line.rstrip())
fh_new = ite..."
[ 151.4s] ✏️ edit_file (tap/parser.py)
[ 151.6s] ✓ {'status': 'ok', 'filepath': 'tap/parser.py', 'occurrences': 1, 'strategy': 'unescaped', 'diff': '---
a/tap/parser.py\n+…
[ 158.0s] 💭 (44 chars) "Now let's run the reproduction script again."
[ 158.0s] 🔧 run_command (21 lines) python3 - <<'PY'
[ 158.1s] → ['this is a multiline', 'string but with tap', 'somehow blank lines', 'are added to it.']
[ 163.8s] 💭 (197 chars) "Great! The reproduction script now produces the expected output.
Now I should run existing tests to make sure I haven't..."
[ 163.8s] 🔧 run_command pytest tap/tests/test_parser.py -q --tb=short --no-header
[ 164.2s] → ........................... [100%]
[ 170.2s] 💭 (205 chars) "Everything passed. I should also check if there are other tests that might be relevant.
`tap/tests/test_result.py` might..."
[ 170.2s] 🔧 run_command pytest tap/tests/test_result.py -q --tb=short --no-header
[ 170.4s] → ......... [100%]
[ 197.0s] 💭 (1153 chars) "All good.
Let me double check if I need to consider other newLine characters like `\r\n`.
If the file is opened in text ..."
[ 197.0s] 🔧 run_command git status --short && git diff
[ 197.1s] → M tap/parser.py
[ 206.8s] 💭 (492 chars) "The diff looks clean and minimal. I have verified it with a reproduction script and existing
tests.
Final check on the p..."
[ 206.8s] 🤖 submit_patch
[ 206.8s] → submit_patch: {"status": "ok", "patch_size": 584, "files_changed": 1}
[ 214.6s] 💭 (19 chars) "Completed the task."
[ 214.6s] ✅ Agent finished: The `_extract_yaml_block` method in `tap/parser.py` was incorrectly adding extra newlines
when processing YAML blocks because it joined lines (which already contained trailing newlines from the file h...
Native result row
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"duration_seconds": 219.59,
"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": 584,
"phase1_seconds": 218.51,
"repo": "python-tap/tappy",
"request_log_path": "/kaggle-root/working/r31/rollouts_X/requests/python-tap__tappy-112__p0__r1.jsonl",
"resolved": true,
"rollout_idx": 1,
"run_key": "python-tap__tappy-112__p0__r1",
"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__r1.json"
}