Bash tool executes bash commands with cmd.exe

Description

The bash tool frequently tries to run commands like mkdir -p ... using spawn, which on Window, defaults to using cmd.exe as the shell. This results in a directory called -p being created and subsequent commands failing.

OpenCode version

1.0.85

Steps to reproduce

Run opencode on Windows.
Issue a prompt like create the path "src/test".

Screenshot and/or share link

# Create src/test directory path
$ mkdir -p src/test
The syntax of the command is incorrect.

list the directory and note that a -p directory has been created.

Operating System

Windows 11

Terminal

Windows Terminal

ill fix

Local hack I'm currently using:

packages/opencode/src/tool/bash.ts:148

const shell = process.platform === "win32" && process.env.SHELL?.includes("bash") ? process.env.SHELL : true
    const proc = spawn(params.command, {
      shell,
      ...

should be fixed on latest

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Bash tool executes bash commands with cmd.exe #4599

Description

OpenCode version

Steps to reproduce

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Operating System

Terminal

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Bash tool executes bash commands with cmd.exe #4599

Description

Description

OpenCode version

Steps to reproduce

Screenshot and/or share link

Operating System

Terminal

Activity

rekram1-node commented on Nov 21, 2025

keathmilligan commented on Nov 21, 2025

rekram1-node commented on Nov 21, 2025

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