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Zed Editor Configuration (Fully Explained)

This Markdown document explains all settings in the given Zed editor configuration, including behavior, appearance, AI tools, Git, and language-specific options.

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🖋️ Editor Appearance

Inlay Hints

These show helpful inline annotations directly inside your code (like types, parameter names, or computed values).

Setting	Description
enabled	Enables all inlay hints globally.
show_other_hints	Shows miscellaneous hints not covered by the other categories.
show_parameter_hints	Displays parameter names in function calls.
show_type_hints	Shows inferred variable or return types inline.
show_value_hints	Shows computed or constant values inline (like x = 2 + 3 → 5).

Other Appearance Options

Setting	Description
ui_font_size	Font size for UI elements like tabs and menus.
buffer_font_size	Font size for the main code buffer (null = use default).
buffer_font_features.calt	Toggles contextual alternates (ligatures) in fonts. false disables fancy glyphs.
lsp_document_colors	Controls how color codes from language servers are shown. "border" shows a colored border.
wrap_guides	Adds a column guide at character position 79 (for line length standards).
show_edit_predictions	Enables or disables inline AI text predictions.

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🎨 Theme & Colors

Setting	Description
theme.mode	"system" follows OS dark/light mode automatically.
theme.light / theme.dark	Theme names for each appearance mode.
experimental.theme_overrides.background.appearance	Makes the background transparent.
syntax.keyword.color	Custom color for syntax keywords.
syntax.function.color	Custom color for function names.

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⚙️ Editor Behavior

Setting	Description
autosave.after_delay.milliseconds	Saves files automatically 500ms after typing stops.
format_on_save	Formats your code automatically when saving.
restore_on_startup	Opens your last session when starting Zed.
show_completions_on_input	Displays autocomplete suggestions while typing.

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🤖 AI & Assistant Features

Agent (Assistant Settings)

Setting	Description
play_sound_when_agent_done	Plays a sound when the AI assistant finishes responding.
inline_assistant_model	Defines the provider/model for inline suggestions.
default_model	The default model for chat or general AI queries.

Both models here use Claude Sonnet 4 by zed.dev.

Edit Predictions

Setting	Description
mode	"subtle" = minimal visual hints for predictions.
enabled_in_text_threads	Prevents predictions from appearing inside text threads.
copilot.proxy / proxy_no_verify	Optional GitHub Copilot proxy configuration (disabled here).

Features

Setting	Description
edit_prediction_provider	Specifies "zed" as the built-in AI provider for predictions.

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🧩 Git Integration

Setting	Description
git.inline_blame.enabled	Toggles inline Git blame annotations showing commit info beside each line.

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🐍 Python Language Settings

Setting	Description
formatter.external.command	Uses the black formatter for Python code.
formatter.external.arguments	Sends code via stdin ("-") and disables quote normalization.
format_on_save	Automatically runs black when saving Python files.

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🦀 Rust Language Settings

Setting	Description
formatter.external.command	Uses rustfmt for Rust code formatting.
formatter.external.arguments	No additional flags (default rustfmt behavior).
format_on_save	Automatically formats Rust code when saving.

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🧠 LSP (Language Server Protocol) for Rust Analyzer

These settings configure how Rust Analyzer behaves — the engine powering autocompletion, linting, and inline hints for Rust.

Setting	Description
check.command	Uses cargo clippy instead of cargo check for stricter linting.
imports.merge.glob	Prevents combining imports into use module::*.
imports.granularity.enforce	Ensures consistent import formatting.
imports.granularity.group	Groups imports by module hierarchy.
inlayHints.maxLength	No maximum character length for displayed hints.
lifetimeElisionHints.enable	"skip_trivial" shows lifetime hints only when they’re non-obvious.
lifetimeElisionHints.useParameterNames	Displays lifetimes using parameter names for clarity.
closureReturnTypeHints.enable	"always" shows return types for closures inline.

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🔒 Privacy & Telemetry

Setting	Description
telemetry.diagnostics	Disables sending of diagnostics or crash data.
telemetry.metrics	Disables telemetry and usage analytics.

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✅ Summary

This configuration provides:

• A feature-rich, hint-heavy editing experience with inlay hints enabled.
• Automatic formatting on save for Python (Black) and Rust (Rustfmt).
• Integrated AI assistance with Zed + Claude Sonnet models.
• Transparent, modern themes with color customizations.
• Privacy-conscious settings (no telemetry).
• Smart Rust configuration via Clippy and Rust Analyzer.

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