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research: 验证 MSYS resize 输入前缀的隔离修补实验 - #94
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Refs #52. Preserve original fixed-runtime acceptance and publish the licensed source patch, bounded red/green evidence and explicit limitations.
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This was referenced Oct 27, 2026
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GUI Vim 的原 stage59 已捕获到 MSYS resize 期间旧输入前缀清理取走 Ctrl-O。本 PR 发布固定公开源码的一处研究补丁及隔离实验：先在未修补重建 DLL 上复现，再仅调整 WINDOW_BUFFER_SIZE_EVENT 的前缀消费顺序，保留原 SIGWINCH 解锁/再加锁。
TermForge 源 ed55a87（产品代码与 c662011 相同）、同一 EXE、候选 .5、官方 ConPTY 1.25.260930003/flags24、原 Vim9.1 patches1–532、输入/断言/25s与40s期限均保持。七轮 Job active/terminated 为0、desktop gone；导出只离线复核原断言、验证器与原件哈希。公开 JSON SHA-256：
f598968797b86c495dc99131c516240440de8feebca136084d80ce3bfdb2d178。补丁源为 MSYS commit 2e2ef940...，附固定上游 LGPLv3-or-later 及 CYGWIN_LICENSE Linking Exception 全文、修改说明与构建包清单。补丁可应用且结果源码哈希匹配；两个重建变体310项对象中6项哈希变化（含版本对象），一处主动源码修改不等于二进制只差一个函数。文档链接、公开字段、Git/本地字节与 scoped whitespace 检查通过；两个精确 gitattributes 例外仅保留上游许可原空白和 unified diff 上下文。
Standards
独立审查0项发现。来源、许可、源码补丁、310项对象及七份原件核对一致。
Spec
独立审查0项发现。预定停止条件、原方法断言、配置身份与正式验收边界保持。
原固定运行库的 #52、#47 及 Draft #50 继续开放；实验 DLL 不进入默认构建/产品包，也不构成已选定兼容策略。本批无 Frida、新 API trace 或加载模块路径观测；失败 input.bin 未刷新，不能当完整输入轨迹。MOUSE、实际 longjmp、其他应用、完整57项及性能未验，既有官方56/57不被覆盖。
发布通过 GitHub 连接器完成，远端树
20be0868bd280a6b5ec961b5940ee2de5e74be58与已审查本地提交460104d逐字节相同；提交元数据不同，远端head为27bea78。目标仅实验父分支fix/conpty-backend-r47。CI结果按默认/system和候选/system分别补充。Refs #52；不关闭原固定运行库验收。
CI 集成状态
首次 checkout
d416d6ae3b9c26b38885554fcbc94dd8451640ae：Build40432465195的Ubuntu33/33（12.52s）；Windows build与23项准备守卫通过，但check-before startup在原20秒超时，最终cleanup_failed，产品CTest未运行。已核对准备artifact12701894988/SHA25692db83453b8be865d2fd0e21c591de81d6e560f89719bb491a8eeaa8d6f3afd1，并记入#81/#38；Job最终归零不能改写准备结果。External candidate40432465115的Windows/Linux分别成功。仅重跑同HEAD失败Windows job一次以完成集成检查，原失败保留，未改期限/输入/守卫，不作为#81根因修复。限定一次重跑已完成：Windows job121956092028成功，完整默认/system52/52、270.40s，实际checkout仍为d416d6a；准备五步通过、20条命令边界完整，两个WSL check各按既有策略收尾2个自有成员，未冒称自然退出。artifact12702174234/SHA256728bc7ec63d04b03f8b1f217da0025192bba0626a826aa3205b74748a28b48a9已核对。Ubuntu latest job121956093915复用了首轮原执行（12.52s），没有重跑；候选CI保持其独立成功。#81首次失败及根因未知继续保留，不再重跑。