@file autocomplete fails completely on Windows due to path separator mismatch #23144

// Line 252
const baseDir = (sync.path.directory || process.cwd()).replace(/\/+$/, "")
const fullPath = `${baseDir}/${item}`
The problem:
- On Windows, process.cwd() returns paths with backslashes: C:\Users\name\project
- The regex .replace(/\/+$/, "") only strips forward slashes /, not backslashes \
- This causes baseDir to retain trailing backslash: C:\Users\name\project\
- Path concatenation then produces invalid mixed paths: C:\Users\name\project\/file.txt
- pathToFileURL() fails to parse these mixed paths, causing file resolution to fail
Additionally, in packages/app/src/context/file/path.ts, the normalize() function intentionally preserves native Windows backslashes for "Cygwin compatibility":
// path.ts:104-131
path = path.slice(root.length)  // Preserves original \ separators on Windows
This causes path mismatches between:
- File index cache (uses / from ripgrep)
- Watcher events (uses \ from @parcel/watcher)
- Tab/store keys (may use either)
Related Issues
- #18871 - @ cannot list workspace files, results=0 (same root cause)
- #17780 - File watcher paths stop matching open files (related path normalization issue)
- #12940 - \ vs / treated as different directories
- #22627 - @file very slow (performance issue, different from this)
- #23088 - @file painfully slow on mac (performance issue, different from this)



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### Operating System

window11

### Terminal

Windows PowerShell