[216_48] 为 liii/cut 添加文档和测试用例

[da-liii]

摘要

为 (liii cut) 模块添加文档和测试用例，使 bin/gf doc liii/cut 能够显示完整的文档和使用示例。

变更内容

1. 新建 tests/liii/cut-test.scm - 包含文档注释和19个测试用例
2. 文档涵盖：
   • 模块功能说明（SRFI-26 的 cut/cute 宏）
   • 占位符语法（<> 和 <...>）
   • cut 与 cute 的区别（运行时求值 vs 创建时求值）
   • 常见用法示例

测试

• 测试全部通过：19 correct, 0 failed
• bin/gf doc liii/cut 成功显示完整文档

🤖 Generated with Claude Code

[greptile-apps]

Greptile Summary

This PR adds documentation and test coverage for the (liii cut) module (SRFI-26 cut/cute partial-application macros) by creating a new tests/liii/cut-test.scm file and removing the older tests/goldfish/liii/cut-test.scm. The migration moves the test file into the directory that bin/gf test discovers automatically, making the 19 existing test cases part of the standard CI test run while also enabling bin/gf doc liii/cut to display module documentation.

• All 19 test cases from the deleted file are preserved verbatim in the new file.
• Rich Chinese-language documentation comments are added covering syntax, common usage patterns, the cut-vs-cute evaluation-timing distinction, and a function index.
• devel/216_48.md is created following the project's required task-documentation template.
• Two minor documentation inconsistencies were found: example 5 uses => without giving a concrete return value (unlike examples 1–4), and the stated syntax (cut <函数> <参数>...) implies the operator is required, which contradicts the valid form (cut) demonstrated by a test case.

Confidence Score: 4/5

Safe to merge; all existing test logic is preserved and the file migration is intentional and correct.

No test cases were added, removed, or altered — the 19 tests are identical to the deleted file. The only concerns are two minor inconsistencies in the documentation comments (non-concrete => in example 5, and the syntax description not covering the zero-argument (cut) form), neither of which affects runtime correctness.

tests/liii/cut-test.scm — two minor documentation clarity issues in the comment block (lines 9–13 and 34–35).

Important Files Changed

Filename	Overview
tests/liii/cut-test.scm	New test file for (liii cut) module; carries over all 19 tests from the deleted tests/goldfish/liii/cut-test.scm and adds rich Chinese-language documentation comments. One documentation example uses => without a concrete return value, which is inconsistent with other examples.
tests/goldfish/liii/cut-test.scm	Deleted old test file; all 19 test cases migrated verbatim to tests/liii/cut-test.scm, which is the directory picked up by bin/gf test.
devel/216_48.md	Task development document following the required template; accurately records what changed, why, and how to test.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["bin/gf doc liii/cut"] -->|reads comments from| B["tests/liii/cut-test.scm\n(新建)"]
    C["bin/gf test"] -->|discovers via find-test-files| B
    D["tests/goldfish/liii/cut-test.scm\n(已删除)"] -->|migrated to| B
    B -->|imports| E["(liii cut)"]
    E -->|re-exports| F["(srfi srfi-26)\ncut / cute"]

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_{Reviews (1): Last reviewed commit: "[216_48] 为 liii/cut 添加文档和测试用例" | Re-trigger Greptile}

[greptile-apps]

语法描述未涵盖无参数形式 (cut)

文档将 cut 的语法写成 (cut <函数> <参数>...)，暗示至少需要一个"函数"参数。但测试用例第 85 行中 ((cut)) => () 表明 (cut) 在不传任何参数时也是合法的（符合 SRFI-26 规范）。

建议在语法说明中补充零参数情况，或注明 <函数> 也可以省略，以避免读者产生 (cut) 为非法语法的误解。