Grep tool returns "No files found" for all searches on ARM64 Linux #13353

Environment

• OpenCode version: 1.1.61
• OS: Ubuntu 20.04 LTS (ARM64/aarch64)
• glibc: 2.31
• rg binary: ~/.local/share/opencode/bin/rg (ripgrep 14.1.1)

Description

The built-in Grep tool returns "No files found" for every search, regardless of pattern, path, or include parameters. This has persisted across multiple OpenCode versions.

Reproduction

Any Grep tool call returns empty:

Grep(pattern="import", path="/home/user/project")        → No files found
Grep(pattern="import", include="*.py")                    → No files found
Grep(pattern="def ")                                      → No files found

Meanwhile, running the exact same rg binary with the same arguments from shell works perfectly:

# OpenCode's own rg binary, same args as grep.ts builds
~/.local/share/opencode/bin/rg -nH --hidden --no-messages \
  --field-match-separator='|' --regexp "import" --glob "*.py" /home/user/project
# → returns 20+ matches

Key observations

1. All Grep searches return empty — not pattern-specific, not path-specific
2. Glob tool works fine — Glob(pattern="**/*.py") finds files correctly
3. Shell rg works fine — identical binary, identical arguments, produces results
4. Duration ~0ms in logs — service=tool.registry status=completed duration=0 grep, suggesting the tool completes almost instantly without actually executing rg
5. The issue is not related to --follow / symlinks (tested: same results with and without symlinks)
6. The issue is not related to .gitignore filtering (files are git-tracked)

Analysis

Based on source code review of grep.ts:

• grep.ts uses Bun.spawn([rgPath, ...args]) with stdout: "pipe" and signal: ctx.abort

• The near-zero execution time suggests either:

  • Bun.spawn stdout pipe returns empty on ARM64 Linux
  • ctx.abort AbortSignal is pre-triggered, killing the process immediately
  • Some other Bun runtime issue on ARM64 + glibc 2.31

• Ripgrep.files() (used by Glob) likely uses a different code path, which is why Glob works but Grep doesn't.

Expected behavior

Grep tool should return matching files and line numbers, consistent with direct rg execution.