Hmbown/CodeWhale · error · anyhow::Error

Failed to update setting: invalid locale '{value}'. Expected

Error message

Failed to update setting: invalid locale '{value}'. Expected: {}.

What it means

Settings update validation for the locale key: the value did not match any locale the localization layer reports as configured/available (the expected list is embedded dynamically). Case/spacing is normalized first, so this is a genuine unknown-locale error.

Source

Thrown at crates/tui/src/settings.rs:1342

            }
            "pin_last_prompt" | "pin_prompt" => {
                self.pin_last_prompt = parse_bool(value)?;
            }
            "show_tool_details" | "tool_details" => {
                self.show_tool_details = parse_bool(value)?;
            }
            "inline_diffs" | "inline_diff" | "diffs" => {
                let normalized = value.trim().to_ascii_lowercase();
                if !matches!(normalized.as_str(), "full" | "summary" | "off") {
                    anyhow::bail!(
                        "Failed to update setting: invalid inline diff mode '{value}'. Expected: full, summary, or off."
                    );
                }
                self.inline_diffs = normalized;
            }
            "locale" | "language" => {
                let Some(locale) = normalize_configured_locale(value) else {
                    anyhow::bail!(
                        "Failed to update setting: invalid locale '{value}'. Expected: {}.",
                        crate::localization::configured_locale_values(", ")
                    );
                };
                self.locale = locale.to_string();
            }
            "theme" => {
                self.theme = normalize_theme_setting(value).map_err(anyhow::Error::msg)?;
            }
            "ui_theme" => {
                self.theme = normalize_theme_setting(value).map_err(anyhow::Error::msg)?;
            }
            "background_color" | "background" | "bg" => {
                self.background_color = normalize_background_color_setting(value)?;
            }
            "composer_density" | "composer" => {
                let normalized = normalize_composer_density(value);
                if !["compact", "comfortable", "spacious"].contains(&normalized) {

View on GitHub (pinned to 0c42157ee5)

Solutions

1. Pick a locale from the list embedded in the message
2. Check available localization values

When it happens

Trigger: Thrown at crates/tui/src/settings.rs:1342 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Hmbown/CodeWhale@0c42157ee5 (2026-08-20). Data as JSON: /api/errors/8be39346cba6f7cd. Report an issue: GitHub.