# Templater stdout maxBuffer Sprint Notes

Generated: 2026-06-20 17:13:26 JST
Public repo: https://github.com/SilentVoid13/Templater
Source issue: https://github.com/SilentVoid13/Templater/issues/1749
Inspected commit: `70a24ce`
Fixed first sprint: $100
Confirmed money: $0

## Why this is viable

The open issue reports `stdout maxBuffer length exceeded` when a Templater user-defined system command emits about 1.2 MB of text. The reporter already identified Node `child_process.exec` default buffering as the likely cause and discussed implementing it.

## Prepared implementation

The local patch adds:

- A `command_max_buffer` setting with a 10 MB default.
- An `Output buffer limit` settings control with positive-number validation.
- A `maxBuffer` option passed to `child_process.exec`.
- A safe fallback to 10 MB if stored settings are missing or invalid.
- Documentation for the new setting and the maxBuffer error.
- An e2e settings test for updating the new setting.

## Verification

`git diff --check` passed.

Runtime smoke test:

- Default Node `exec` with 1,100,000 bytes stdout fails with `stdout maxBuffer length exceeded`.
- Node `exec` with `maxBuffer: 2 * 1024 * 1024` succeeds and returns 1,100,000 bytes.

Full typecheck/build was not run because `pnpm install --frozen-lockfile` repeatedly timed out against npm registry metadata and attestation endpoints.

## Posting boundary

No upstream comment, email, direct message, pull request, or patch delivery has been sent. The implementation patch is prepared locally for buyer/user review and can be used only after the user approves the external action.

## Draft response, still not posted

I prepared a small patch for the system command stdout maxBuffer issue. It adds a configurable Output buffer limit setting, stores it as command_max_buffer in MB with a 10 MB default, passes maxBuffer into child_process.exec, documents the new setting, and adds settings coverage. A local Node smoke test reproduces the default stdout maxBuffer failure at 1.1 MB and confirms the same command succeeds with a larger maxBuffer. I can hand over the patch or adapt it to your branch after fixed-scope acceptance and external payment proof.