gemini-cli - 💡(How to fix) Fix Bug: CLI agent introduces invalid whitespaces/newlines in terminal commands [1 participants]

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google-gemini/gemini-cli#25884Fetched 2026-04-24 06:13:35
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Error Message

Resulting Error: zsh: parse error near \\n'

Code Example

❯ nohup omlx serve --model-dir ~/ai_tools/models/mlx/Qwen2.5-3B-Instruct-4bit --port 8100 >
   /dev/null 2>&1 &
RAW_BUFFERClick to expand / collapse

When Gemini CLI provides terminal commands in its responses, it occasionally introduces unnecessary whitespaces or unexpected newlines within a single command string. This causes errors when a user attempts to copy and paste the command directly into a Zsh terminal.

Steps to Reproduce:

  1. Ask the agent for a background command involving output redirection (e.g., nohup ... > /dev/null 2>&1 &).
  2. The agent formats the output with a newline or indentation that breaks the shell syntax.

Actual Behavior Output:

nohup omlx serve --model-dir ~/ai_tools/models/mlx/Qwen2.5-3B-Instruct-4bit --port 8100 >
   /dev/null 2>&1 &

Resulting Error: zsh: parse error near \\n'

Environment:

  • OS: macOS (Darwin)
  • Shell: zsh
  • Gemini CLI Version: 0.38.2

extent analysis

TL;DR

Remove unnecessary whitespaces or newlines from the command string provided by the Gemini CLI before executing it in the Zsh terminal.

Guidance

  • Verify that the issue is indeed caused by the formatting of the command string by checking for any unexpected characters or line breaks.
  • Attempt to manually remove any unnecessary whitespaces or newlines from the command string before executing it.
  • Consider using a command-line tool or script to automatically remove unwanted characters from the command string.
  • Test the command in a different shell or environment to see if the issue is specific to Zsh or the Gemini CLI.

Example

# Remove leading and trailing whitespaces
command="   nohup omlx serve --model-dir ~/ai_tools/models/mlx/Qwen2.5-3B-Instruct-4bit --port 8100 > /dev/null 2>&1 &"
command=$(echo "$command" | xargs)

# Remove newlines
command=${command//$'\n'/}

Notes

The provided solution assumes that the issue is solely caused by the formatting of the command string. If the problem persists after removing unnecessary characters, further investigation into the Gemini CLI or Zsh configuration may be necessary.

Recommendation

Apply workaround: Remove unnecessary whitespaces or newlines from the command string, as the root cause appears to be related to command formatting rather than a version-specific issue with the Gemini CLI.

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