サンプル

Intercept, rewrite, and suppress source locations, built-in attributes, and hierarchical group fields using tint.Options.ReplaceAttr

sha256:6fdf0275f43c82295f836ff4ca53426ed7d8b2baf0b87ccdbdfc86ae8eaae5c5

ケース

ゴール

Intercept, rewrite, and suppress source locations, built-in attributes, and hierarchical group fields using tint.Options.ReplaceAttr HOW

パッケージ

github.com/lmittmann/tint 1.2.0

環境

go

作成日

2026-08-17T19:21:08Z

よくある思い込み

tint formats AddSource as a standard key-value attribute at the end of the log line matching slog.TextHandler conventions.

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• tint.NewTextHandler formats source code locations directly between the level badge and log message as a faint prefix instead of a trailing key-value pair, and allows complete suppression or replacement via ReplaceAttr
• ReplaceAttr receives *slog.Source for slog.SourceKey and returning an empty slog.Attr removes the source prefix completely without leftover spacing
• ReplaceAttr intercepts built-in slog keys including slog.LevelKey, slog.MessageKey, and slog.TimeKey for custom level tagging, payload rewriting, or timestamp omission
• Nested WithGroup handlers and inline slog.Group attributes pass their full group hierarchy to ReplaceAttr while tint formats keys with dot notation and prunes empty groups entirely
• ReplaceAttr can dynamically return tint.Attr or tint.Err to conditionally colorize attributes based on runtime values

ファイル

• NOTES.md
• csx.json
• go.mod
• go.sum
• tint_test.go

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9