# Evidence: Block 4 · Service (block-4) - block type: block - date: 2026-08-15 - resulting state: closed/verified - story points (combined assembled cost): 60056 - execution id: 20260815.210928.719Z-4a50798b ## Stories built - Parse lists, list items, nesting, laziness, and tightness. (block-003) [story] ## Stacked context - compass: COMPASS.md (SP 1455) - implements: FEATURE-Block-Lists.md (SP 627) - context: spec.txt (SP 51527) - context: spec_tests.py (SP 1609) - context: cmark.py (SP 339) - context: normalize.py (SP 1631) - context: ARCHITECTURE_compact.md (SP 87) - stack: common_compact.md (SP 1179) - stack: python_compact.md (SP 1534) ## Build directory changes - commonmark - tests/test_interface.py ## Pre-build acceptance observation - RED: lists-conformance (FEATURE-Block-Lists.md) intent: The implementation passes every supplied conformance example owned by list items and lists. return code: 1 stdout: Example 257 (lines 4212-4221) List items - one two --- expected HTML +++ actual HTML @@ -1 +1 @@ -

two

Example 259 (lines 4238-4248) List items - one two --- expected HTML +++ actual HTML @@ -1,2 +1 @@ -

 two
    -

one
two

Example 262 (lines 4300-4313) List items >>- one >> > > two --- expected HTML +++ actual HTML @@ -1 +1 @@ -

one
two

Example 267 (lines 4399-4405) List items 123456789. ok --- expected HTML +++ actual HTML @@ -1 +1 @@ -

Example 268 (lines 4408-4412) List items 1234567890. not ok --- expected HTML +++ actual HTML @@ -1 +1 @@ -

1234567890. not ok

not ok

Example 270 (lines 4426-4432) List items 003. ok --- expected HTML +++ actual HTML @@ -1 +1 @@ -

Example 273 (lines 4477-4489) List items 10. foo bar --- expected HTML +++ actual HTML @@ -1,2 +1,2 @@ -

foo

bar
    +foo
  bar
     
    
    Example 275 (lines 4511-4527) List items
    1.     indented code
    
       paragraph
    
           more code
    
    --- expected HTML
    +++ actual HTML
    @@ -1,3 +1,2 @@
    -indented code
    -
paragraph
more code
    -
    +indented code
paragraph
   more code
    +
    
    Example 276 (lines 4533-4549) List items
    1.      indented code
    
       paragraph
    
           more code
    
    --- expected HTML
    +++ actual HTML
    @@ -1,3 +1,2 @@
    - indented code
    -
paragraph
more code
    -
    +indented code
paragraph
   more code
    +
    
    Example 278 (lines 4570-4579) List items
    -    foo
    
      bar
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
    +foo
bar
    
    Example 280 (lines 4614-4635) List items
    -
      foo
    -
      ```
      bar
      ```
    -
          baz
    
    --- expected HTML
    +++ actual HTML
    @@ -1,3 +1,2 @@
    -foo
bar
    -
baz
    -
    +- foo
bar
    +
- baz
    
    Example 281 (lines 4640-4647) List items
    -   
      foo
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
    +
foo
    
    Example 282 (lines 4654-4663) List items
    -
    
      foo
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -
foo
    +-
foo
    
    Example 283 (lines 4668-4678) List items
    - foo
    -
    - bar
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
    +foo
- - bar
    
    Example 284 (lines 4683-4693) List items
    - foo
    -   
    - bar
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
    +foo
bar
    
    Example 285 (lines 4698-4708) List items
    1. foo
    2.
    3. bar
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
    +foo
2. 3. bar
    
    Example 286 (lines 4713-4719) List items
    *
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -
    +*
    
    Example 288 (lines 4745-4764) List items
     1.  A paragraph
         with two lines.
    
             indented code
    
         > A block quote.
    
    --- expected HTML
    +++ actual HTML
    @@ -1,2 +1,2 @@
    -A paragraph with two lines.
indented code
    +A paragraph with two lines.
 indented code
     
A block quote.
    
    Example 289 (lines 4769-4788) List items
      1.  A paragraph
          with two lines.
    
              indented code
    
          > A block quote.
    
    --- expected HTML
    +++ actual HTML
    @@ -1,2 +1,2 @@
    -A paragraph with two lines.
indented code
    +A paragraph with two lines.
  indented code
     
A block quote.
    
    Example 290 (lines 4793-4812) List items
       1.  A paragraph
           with two lines.
    
               indented code
    
           > A block quote.
    
    --- expected HTML
    +++ actual HTML
    @@ -1,2 +1,2 @@
    -A paragraph with two lines.
indented code
    +A paragraph with two lines.
   indented code
     
A block quote.
    
    Example 292 (lines 4847-4866) List items
      1.  A paragraph
    with two lines.
    
              indented code
    
          > A block quote.
    
    --- expected HTML
    +++ actual HTML
    @@ -1,2 +1,4 @@
    -A paragraph with two lines.
indented code
    -
A block quote.
    +A paragraph
with two lines.
      indented code
    +
    +  > A block quote.
    +
    
    Example 293 (lines 4871-4879) List items
      1.  A paragraph
        with two lines.
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -A paragraph with two lines.
    +A paragraph with two lines.
    
    Example 294 (lines 4884-4898) List items
    > 1. > Blockquote
    continued here.
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -Blockquote continued here.
    +Blockquote
continued here.
    
    Example 295 (lines 4901-4915) List items
    > 1. > Blockquote
    > continued here.
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -Blockquote continued here.
    +Blockquote
continued here.
    
    Example 296 (lines 4929-4950) List items
    - foo
      - bar
        - baz
          - boo
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foobarbazboo
    +foo
bar - baz - boo
    
    Example 298 (lines 4972-4983) List items
    10) foo
        - bar
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foobar
    +foo - bar
    
    Example 299 (lines 4988-4998) List items
    10) foo
       - bar
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
    +foo
bar
    
    Example 302 (lines 5035-5049) List items
    - # Foo
    - Bar
      ---
      baz
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -Foo
Bar
baz
    +Foo
Bar
baz
    
    Example 303 (lines 5271-5283) Lists
    - foo
    - bar
    + baz
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
baz
    +foo
bar
baz
    
    Example 304 (lines 5286-5298) Lists
    1. foo
    2. bar
    3) baz
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
baz
    +foo
bar
baz
    
    Example 305 (lines 5305-5315) Lists
    Foo
    - bar
    - baz
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -Foo
bar
baz
    +Foo - bar - baz
    
    Example 307 (lines 5392-5400) Lists
    The number of windows in my house is
    1.  The number of doors is 6.
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -The number of windows in my house is
The number of doors is 6.
    +The number of windows in my house is 1. The number of doors is 6.
    
    Example 309 (lines 5427-5449) Lists
    - foo
      - bar
        - baz
    
    
          bim
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1,2 @@
    -foobarbaz
bim
    +foo
bar - baz
bim
    +
    
    Example 310 (lines 5457-5475) Lists
    - foo
    - bar
    
    
    
    - baz
    - bim
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
baz
bim
    +foo
bar
baz
bim
    
    Example 314 (lines 5554-5568) Lists
    - a
     - b
      - c
       - d
        - e
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -a
b
c
d - e
    +a
b
c
d - e
    
    Example 315 (lines 5574-5591) Lists
    1. a
    
      2. b
    
        3. c
    
    --- expected HTML
    +++ actual HTML
    @@ -1,2 +1 @@
    -a
b
3. c
    -
    +a
b
c
    
    Example 317 (lines 5619-5634) Lists
    * a
    *
    
    * c
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -a
c
    +a
*
c
    
    Example 320 (lines 5686-5705) Lists
    - a
    - ```
      b
    
    
      ```
    - c
    
    --- expected HTML
    +++ actual HTML
    @@ -1,4 +1,4 @@
    -a
b
    +a
b
     
     
    -
c
    +
c
    
    Example 321 (lines 5712-5730) Lists
    - a
      - b
    
        c
    - d
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -ab
c
d
    +a
b
c
d
    
    Example 322 (lines 5736-5750) Lists
    * a
      > b
      >
    * c
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -ab
c
    +a
b
c
    
    Example 323 (lines 5756-5774) Lists
    - a
      > b
      ```
      c
      ```
    - d
    
    --- expected HTML
    +++ actual HTML
    @@ -1,2 +1 @@
    -ab
c
    -
d
    +a
b
c
d
    
    Example 325 (lines 5788-5799) Lists
    - a
      - b
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -ab
    +a
b
    
    Example 327 (lines 5824-5839) Lists
    * foo
      * bar
    
      baz
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -foo
bar
baz
    +foo
bar
baz
    
    Example 328 (lines 5842-5867) Lists
    - a
      - b
      - c
    
    - d
      - e
      - f
    
    --- expected HTML
    +++ actual HTML
    @@ -1 +1 @@
    -a
b
c
d
e
f
    +a
b
c
d
e
f
    
    30 passed, 44 failed, 0 errored, 581 skipped
  stderr:
    Traceback (most recent call last):
      File "lists-conformance.py", line 20, in 
        assert result.returncode == 0
               ^^^^^^^^^^^^^^^^^^^^^^
    AssertionError
- GREEN (prepassed): lists-interface (FEATURE-Block-Lists.md)
  intent: A bullet list is accepted through the executable interface.
  return code: 0
  stdout:
    one
two
- GREEN (prepassed): lists-nested-input (FEATURE-Block-Lists.md)
  intent: Nested and ordered list input is accepted through the executable interface.
  return code: 0
  stdout:
    one
    nested

## Post-build programmatic acceptance
- PASS: lists-conformance (FEATURE-Block-Lists.md)
  intent: The implementation passes every supplied conformance example owned by list items and lists.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0
  stdout:
    74 passed, 0 failed, 0 errored, 581 skipped
- PASS: lists-interface (FEATURE-Block-Lists.md)
  intent: A bullet list is accepted through the executable interface.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0
  stdout:
    one
two
- PASS: lists-nested-input (FEATURE-Block-Lists.md)
  intent: Nested and ordered list input is accepted through the executable interface.
  target interpreter: /mnt/c/Users/barlo/projects/drydock/.venv/bin/python3
  provisioning: not required
  return code: 0
  stdout:
    one
    nested

## Repair attempts
- attempt 0 (initial build): failed; 2/3 checks; 73/74 cases model=gpt-5.6-luna; execution 20260815.210131.085Z-a3196f28
- attempt 1 (repair 1): built; 3/3 checks; 74/74 cases model=gpt-5.6-luna; execution 20260815.210928.719Z-4a50798b

## Build summary
RESULT: SUCCESS

FILES CHANGED:
- commonmark
- tests/test_interface.py

SUMMARY:
Fixed nested-list tightness detection and loose outer-list rendering. List conformance passes: 74 passed, 0 failed. Added deterministic regression tests; all 5 interface tests pass.

BLOCKERS:
- None