✨ Add scoped target and field style markup

README.md

@@ -306,6 +306,7 @@ match logger.file_runtime_state() {
 - 支持字段: `min_level`, `target`, `timestamp`, `sink.kind`, `sink.path`, `sink.append`, `sink.auto_flush`, `sink.rotation`, `sink.text_formatter`, `queue`
 - `TextFormatter` / `TextFormatterConfig` 提供 `color_mode = Never | Auto | Always`, 可控制 ANSI 文本着色
 - `TextFormatter` / `TextFormatterConfig` 提供 `style_markup = disabled | builtin | full`, 可决定是否解析 style markup 以及是否启用 custom style tag
+- `target_style_markup` 与 `fields_style_markup` 可独立控制 `target` 和 `fields` 是否解析 style markup
 - `message` 支持轻量 inline style tag: `<red>...</>`, `<b>...</>`, `<#ff0000>...</>`, `<bg:#202020>...</>`
 - 内置语义标签包括: `<accent>`, `<info>`, `<success>`, `<warning>`, `<danger>`, `<muted>`
 - 运行期样式标签 API: `TextStyle`, `StyleTagRegistry`, `style_tag_registry()`, `default_style_tag_registry()`, `set_tag(...)`, `define_alias(...)`
@@ -337,7 +338,9 @@ match logger.file_runtime_state() {
 - `sink.text_formatter.template` 支持固定 token: `{timestamp}`, `{timestamp_ms}`, `{level}`, `{target}`, `{message}`, `{fields}`
 - `sink.text_formatter.color_mode` 支持 `never`, `auto`, `always`
 - `sink.text_formatter.style_markup` 支持 `disabled`, `builtin`, `full`
+- `sink.text_formatter.target_style_markup` 与 `sink.text_formatter.fields_style_markup` 支持 `disabled`, `builtin`, `full`
 - `sink.text_formatter.style_tags.<name>` 支持 `fg`, `bg`, `bold`, `dim`, `italic`, `underline`
+- `fields_style_markup` 当前只解析 field value, 不解析 field key
 - 可由配置直接组装的 sink 类型: `console`, `json_console`, `text_console`, `file`
 - `queue` 作为显式包装层附着在最终 sink 外侧. 这仍然是同步 drain 模型, 不是 async runtime
 

bitlogger/BitLogger_test.mbt

@@ -74,9 +74,11 @@ test "logger config parser reads formatter and queue options" {
 
 test "logger config parser reads formatter style tags" {
   let config = parse_logger_config_text(
-    "{\"sink\":{\"kind\":\"text_console\",\"text_formatter\":{\"color_mode\":\"always\",\"style_markup\":\"builtin\",\"style_tags\":{\"accent\":{\"fg\":\"#4cc9f0\",\"bold\":true},\"panel\":{\"bg\":\"#202020\",\"underline\":true}}}}}",
+    "{\"sink\":{\"kind\":\"text_console\",\"text_formatter\":{\"color_mode\":\"always\",\"style_markup\":\"builtin\",\"target_style_markup\":\"builtin\",\"fields_style_markup\":\"disabled\",\"style_tags\":{\"accent\":{\"fg\":\"#4cc9f0\",\"bold\":true},\"panel\":{\"bg\":\"#202020\",\"underline\":true}}}}}",
   )
   inspect(style_markup_mode_label(config.sink.text_formatter.style_markup), content="builtin")
+  inspect(style_markup_mode_label(config.sink.text_formatter.target_style_markup), content="builtin")
+  inspect(style_markup_mode_label(config.sink.text_formatter.fields_style_markup), content="disabled")
   inspect(config.sink.text_formatter.style_tags.length(), content="2")
   match config.sink.text_formatter.style_tags.get("accent") {
     Some(style) => {
@@ -150,6 +152,8 @@ test "logger config stringify roundtrips formatter style tags" {
         text_formatter=TextFormatterConfig::new(
           color_mode=ColorMode::Always,
           style_markup=StyleMarkupMode::Builtin,
+          target_style_markup=StyleMarkupMode::Builtin,
+          fields_style_markup=StyleMarkupMode::Disabled,
           style_tags={
             "accent": text_style(fg=Some("#4cc9f0"), bold=true),
             "panel": text_style(bg=Some("#202020"), dim=true),
@@ -161,6 +165,8 @@ test "logger config stringify roundtrips formatter style tags" {
   let config = parse_logger_config_text(text)
   inspect(color_mode_label(config.sink.text_formatter.color_mode), content="always")
   inspect(style_markup_mode_label(config.sink.text_formatter.style_markup), content="builtin")
+  inspect(style_markup_mode_label(config.sink.text_formatter.target_style_markup), content="builtin")
+  inspect(style_markup_mode_label(config.sink.text_formatter.fields_style_markup), content="disabled")
   inspect(config.sink.text_formatter.style_tags.length(), content="2")
   inspect(config.sink.text_formatter.style_tags.get("accent").unwrap().fg.unwrap(), content="#4cc9f0")
   inspect(config.sink.text_formatter.style_tags.get("accent").unwrap().bold, content="true")
@@ -208,12 +214,14 @@ test "config subtype json helpers stringify stable shapes" {
         template="[{level}] {message} :: {fields}",
         color_mode=ColorMode::Always,
         style_markup=StyleMarkupMode::Builtin,
+        target_style_markup=StyleMarkupMode::Builtin,
+        fields_style_markup=StyleMarkupMode::Disabled,
         style_tags={
           "accent": text_style(fg=Some("#4cc9f0"), bold=true),
         },
       ),
     ),
-    content="{\"show_timestamp\":false,\"show_level\":true,\"show_target\":false,\"show_fields\":true,\"separator\":\" | \",\"field_separator\":\",\",\"template\":\"[{level}] {message} :: {fields}\",\"color_mode\":\"always\",\"style_markup\":\"builtin\",\"style_tags\":{\"accent\":{\"bold\":true,\"dim\":false,\"italic\":false,\"underline\":false,\"fg\":\"#4cc9f0\"}}}",
+    content="{\"show_timestamp\":false,\"show_level\":true,\"show_target\":false,\"show_fields\":true,\"separator\":\" | \",\"field_separator\":\",\",\"template\":\"[{level}] {message} :: {fields}\",\"color_mode\":\"always\",\"style_markup\":\"builtin\",\"target_style_markup\":\"builtin\",\"fields_style_markup\":\"disabled\",\"style_tags\":{\"accent\":{\"bold\":true,\"dim\":false,\"italic\":false,\"underline\":false,\"fg\":\"#4cc9f0\"}}}",
   )
   inspect(
     stringify_sink_config(
@@ -226,7 +234,7 @@ test "config subtype json helpers stringify stable shapes" {
         text_formatter=TextFormatterConfig::new(show_timestamp=false, color_mode=ColorMode::Auto),
       ),
     ),
-    content="{\"kind\":\"file\",\"path\":\"demo.log\",\"append\":false,\"auto_flush\":false,\"text_formatter\":{\"show_timestamp\":false,\"show_level\":true,\"show_target\":true,\"show_fields\":true,\"separator\":\" \",\"field_separator\":\" \",\"template\":\"\",\"color_mode\":\"auto\",\"style_markup\":\"full\"},\"rotation\":{\"max_bytes\":128,\"max_backups\":2}}",
+    content="{\"kind\":\"file\",\"path\":\"demo.log\",\"append\":false,\"auto_flush\":false,\"text_formatter\":{\"show_timestamp\":false,\"show_level\":true,\"show_target\":true,\"show_fields\":true,\"separator\":\" \",\"field_separator\":\" \",\"template\":\"\",\"color_mode\":\"auto\",\"style_markup\":\"full\",\"target_style_markup\":\"disabled\",\"fields_style_markup\":\"disabled\"},\"rotation\":{\"max_bytes\":128,\"max_backups\":2}}",
   )
 }
 
@@ -280,6 +288,29 @@ test "config disabled style markup keeps raw tags" {
   inspect(rendered, content="<accent>raw</> <red>tag</>")
 }
 
+test "config target and fields markup modes render separately" {
+  let formatter = TextFormatterConfig::new(
+    show_level=false,
+    color_mode=ColorMode::Always,
+    style_markup=StyleMarkupMode::Disabled,
+    target_style_markup=StyleMarkupMode::Builtin,
+    fields_style_markup=StyleMarkupMode::Builtin,
+  )
+  let rendered = format_text(
+    Record::new(
+      Level::Info,
+      "<danger>message stays raw</>",
+      target="<danger>svc</>",
+      fields=[field("status", "<success>ok</>")],
+    ),
+    formatter=formatter.to_formatter(),
+  )
+  inspect(
+    rendered,
+    content="[\u{001b}[34m\u{001b}[31;1msvc\u{001b}[0m\u{001b}[0m] <danger>message stays raw</> \u{001b}[35mstatus=\u{001b}[32;1mok\u{001b}[0m\u{001b}[0m",
+  )
+}
+
 test "build logger from config supports queued text console" {
   let logger = build_logger(
     LoggerConfig::new(

bitlogger/BitLogger_wbtest.mbt

@@ -259,6 +259,47 @@ test "builtin semantic style tags can still be overridden" {
   )
 }
 
+test "text formatter can enable markup for target separately" {
+  let formatter = text_formatter(
+    show_level=false,
+    color_mode=ColorMode::Always,
+    target_style_markup=StyleMarkupMode::Builtin,
+  )
+  let rec = record(Level::Info, "hello", target="<danger>svc</>")
+  inspect(
+    format_text(rec, formatter=formatter),
+    content="[\u{001b}[34m\u{001b}[31;1msvc\u{001b}[0m\u{001b}[0m] hello",
+  )
+}
+
+test "text formatter can enable markup for field values separately" {
+  let formatter = text_formatter(
+    show_level=false,
+    show_target=false,
+    color_mode=ColorMode::Always,
+    fields_style_markup=StyleMarkupMode::Builtin,
+  )
+  let rec = record(Level::Info, "hello", fields=[field("status", "<success>ok</>")])
+  inspect(
+    format_text(rec, formatter=formatter),
+    content="hello \u{001b}[35mstatus=\u{001b}[32;1mok\u{001b}[0m\u{001b}[0m",
+  )
+}
+
+test "text formatter leaves field keys raw when field markup is enabled" {
+  let formatter = text_formatter(
+    show_level=false,
+    show_target=false,
+    color_mode=ColorMode::Always,
+    fields_style_markup=StyleMarkupMode::Builtin,
+  )
+  let rec = record(Level::Info, "hello", fields=[field("<danger>status</>", "ok")])
+  inspect(
+    format_text(rec, formatter=formatter),
+    content="hello \u{001b}[35m<danger>status</>=ok\u{001b}[0m",
+  )
+}
+
 test "text formatter template respects disabled fields" {
   let rec = record(Level::Warn, "just message", target="svc")
   let formatter = text_formatter(

bitlogger/README.mbt.md

@@ -252,11 +252,13 @@ test {
 - supported tokens / 支持的 token: `{timestamp}`, `{timestamp_ms}`, `{level}`, `{target}`, `{message}`, `{fields}`
 - `color_mode` / `color_mode`: `never`, `auto`, `always`
 - `style_markup` / `style_markup`: `disabled`, `builtin`, `full`
+- `target_style_markup` / `target_style_markup`, `fields_style_markup` / `fields_style_markup`: `disabled`, `builtin`, `full`
 - inline style tags / inline 样式标签: `<red>...</>`, `<b>...</>`, `<#ff0000>...</>`, `<bg:#202020>...</>`
 - builtin semantic tags / 内置语义标签: `<accent>`, `<info>`, `<success>`, `<warning>`, `<danger>`, `<muted>`
 - runtime style tags / 运行期样式标签: `TextStyle`, `StyleTagRegistry`, `style_tag_registry()`, `default_style_tag_registry()`, `set_tag(...)`, `define_alias(...)`
 - style tag priority / 标签优先级: formatter local `style_tags` > global style tag registry > builtin tags
 - `sink.text_formatter.style_tags` / `sink.text_formatter.style_tags` 现支持最小对象映射: `fg`, `bg`, `bold`, `dim`, `italic`, `underline`
+- `fields_style_markup` currently affects values only / `fields_style_markup` 当前仅影响 field value, 不影响 field key
 - `define_alias(...)` is still runtime-only / `define_alias(...)` 目前仍为运行期 API
 - disabled or missing parts render as empty text / 被关闭或缺失的部分会渲染为空字符串
 - `template` is intentionally a simple token replacement layer, not a full DSL / `template` 使用轻量 token 替换方式, 不是完整 DSL

bitlogger/config.mbt

@@ -19,6 +19,8 @@ pub struct TextFormatterConfig {
   template : String
   color_mode : ColorMode
   style_markup : StyleMarkupMode
+  target_style_markup : StyleMarkupMode
+  fields_style_markup : StyleMarkupMode
   style_tags : Map[String, TextStyle]
 }
 
@@ -32,6 +34,8 @@ pub fn TextFormatterConfig::new(
   template~ : String = "",
   color_mode~ : ColorMode = ColorMode::Never,
   style_markup~ : StyleMarkupMode = StyleMarkupMode::Full,
+  target_style_markup~ : StyleMarkupMode = StyleMarkupMode::Disabled,
+  fields_style_markup~ : StyleMarkupMode = StyleMarkupMode::Disabled,
   style_tags~ : Map[String, TextStyle] = {},
 ) -> TextFormatterConfig {
   {
@@ -44,6 +48,8 @@ pub fn TextFormatterConfig::new(
     template,
     color_mode,
     style_markup,
+    target_style_markup,
+    fields_style_markup,
     style_tags,
   }
 }
@@ -67,6 +73,8 @@ pub fn TextFormatterConfig::to_formatter(self : TextFormatterConfig) -> TextForm
     template=self.template,
     color_mode=self.color_mode,
     style_markup=self.style_markup,
+    target_style_markup=self.target_style_markup,
+    fields_style_markup=self.fields_style_markup,
     style_tags=if self.style_tags.length() == 0 {
       None
     } else {
@@ -891,6 +899,8 @@ fn parse_text_formatter_config(value : @json_parser.JsonValue) -> TextFormatterC
     template=get_string(obj, "template", default=""),
     color_mode=parse_color_mode(get_string(obj, "color_mode", default="never")),
     style_markup=parse_style_markup_mode(get_string(obj, "style_markup", default="full")),
+    target_style_markup=parse_style_markup_mode(get_string(obj, "target_style_markup", default="disabled")),
+    fields_style_markup=parse_style_markup_mode(get_string(obj, "fields_style_markup", default="disabled")),
     style_tags=match obj.get("style_tags") {
       None => {}
       Some(inner) => parse_style_tags_config(inner)
@@ -1015,6 +1025,8 @@ pub fn text_formatter_config_to_json(config : TextFormatterConfig) -> @json_pars
     "template": @json_parser.JsonValue::String(config.template),
     "color_mode": @json_parser.JsonValue::String(color_mode_label(config.color_mode)),
     "style_markup": @json_parser.JsonValue::String(style_markup_mode_label(config.style_markup)),
+    "target_style_markup": @json_parser.JsonValue::String(style_markup_mode_label(config.target_style_markup)),
+    "fields_style_markup": @json_parser.JsonValue::String(style_markup_mode_label(config.fields_style_markup)),
   }
   if config.style_tags.length() != 0 {
     obj["style_tags"] = style_tags_config_to_json(config.style_tags)

bitlogger/formatter.mbt

@@ -178,6 +178,8 @@ pub struct TextFormatter {
   template : String
   color_mode : ColorMode
   style_markup : StyleMarkupMode
+  target_style_markup : StyleMarkupMode
+  fields_style_markup : StyleMarkupMode
   style_tags : StyleTagRegistry?
 }
 
@@ -191,6 +193,8 @@ pub fn text_formatter(
   template~ : String = "",
   color_mode~ : ColorMode = ColorMode::Never,
   style_markup~ : StyleMarkupMode = StyleMarkupMode::Full,
+  target_style_markup~ : StyleMarkupMode = StyleMarkupMode::Disabled,
+  fields_style_markup~ : StyleMarkupMode = StyleMarkupMode::Disabled,
   style_tags~ : StyleTagRegistry? = None,
 ) -> TextFormatter {
   {
@@ -203,6 +207,8 @@ pub fn text_formatter(
     template,
     color_mode,
     style_markup,
+    target_style_markup,
+    fields_style_markup,
     style_tags,
   }
 }
@@ -223,6 +229,20 @@ pub fn TextFormatter::without_style_markup(self : TextFormatter) -> TextFormatte
   { ..self, style_markup: StyleMarkupMode::Disabled }
 }
 
+pub fn TextFormatter::with_target_style_markup(
+  self : TextFormatter,
+  style_markup : StyleMarkupMode,
+) -> TextFormatter {
+  { ..self, target_style_markup: style_markup }
+}
+
+pub fn TextFormatter::with_fields_style_markup(
+  self : TextFormatter,
+  style_markup : StyleMarkupMode,
+) -> TextFormatter {
+  { ..self, fields_style_markup: style_markup }
+}
+
 pub fn TextFormatter::with_style_tags(self : TextFormatter, style_tags : StyleTagRegistry) -> TextFormatter {
   { ..self, style_tags: Some(style_tags) }
 }
@@ -562,13 +582,14 @@ fn parse_inline_markup(input : String, formatter : TextFormatter) -> Array[Style
   segments
 }
 
-fn render_inline_markup(message : String, formatter : TextFormatter) -> String {
-  match formatter.style_markup {
-    StyleMarkupMode::Disabled => return message
+fn render_styled_text(text : String, formatter : TextFormatter, mode : StyleMarkupMode) -> String {
+  match mode {
+    StyleMarkupMode::Disabled => return text
     _ => ()
   }
   let enabled = use_ansi_color(formatter.color_mode)
-  let segments = parse_inline_markup(message, formatter)
+  let scoped = { ..formatter, style_markup: mode }
+  let segments = parse_inline_markup(text, scoped)
   let out = StringBuilder::new()
   for segment in segments {
     out.write_string(ansi_wrap_with_style(segment.text, segment.style, enabled))
@@ -576,6 +597,10 @@ fn render_inline_markup(message : String, formatter : TextFormatter) -> String {
   out.to_string()
 }
 
+fn render_inline_markup(message : String, formatter : TextFormatter) -> String {
+  render_styled_text(message, formatter, formatter.style_markup)
+}
+
 fn level_ansi_code(level : Level) -> String {
   match level {
     Level::Trace => "90"
@@ -594,10 +619,6 @@ fn fields_to_json(fields : Array[Field]) -> Json {
   Json::object(obj)
 }
 
-fn format_fields(fields : Array[Field], separator : String) -> String {
-  fields.map(fn(f) { "\{f.key}=\{f.value}" }).join(separator)
-}
-
 fn timestamp_text(rec : Record, formatter : TextFormatter) -> String {
   if formatter.show_timestamp && rec.timestamp_ms != 0UL {
     ansi_wrap(rec.timestamp_ms.to_string(), "90", use_ansi_color(formatter.color_mode))
@@ -616,15 +637,22 @@ fn level_text(rec : Record, formatter : TextFormatter) -> String {
 
 fn target_text(rec : Record, formatter : TextFormatter) -> String {
   if formatter.show_target && rec.target != "" {
-    ansi_wrap(rec.target, "34", use_ansi_color(formatter.color_mode))
+    let rendered = render_styled_text(rec.target, formatter, formatter.target_style_markup)
+    ansi_wrap(rendered, "34", use_ansi_color(formatter.color_mode))
   } else {
     ""
   }
 }
 
+fn format_field_text(field : Field, formatter : TextFormatter) -> String {
+  let value = render_styled_text(field.value, formatter, formatter.fields_style_markup)
+  "\{field.key}=\{value}"
+}
+
 fn fields_text(rec : Record, formatter : TextFormatter) -> String {
   if formatter.show_fields && rec.fields.length() != 0 {
-    ansi_wrap(format_fields(rec.fields, formatter.field_separator), "35", use_ansi_color(formatter.color_mode))
+    let content = rec.fields.map(fn(field) { format_field_text(field, formatter) }).join(formatter.field_separator)
+    ansi_wrap(content, "35", use_ansi_color(formatter.color_mode))
   } else {
     ""
   }

docs/README-en.md

@@ -282,6 +282,7 @@ match logger.file_runtime_state() {
 - Supported keys include `min_level`, `target`, `timestamp`, `sink.kind`, `sink.path`, `sink.append`, `sink.auto_flush`, `sink.rotation`, `sink.text_formatter`, and `queue`.
 - `TextFormatter` and `TextFormatterConfig` now include `color_mode = Never | Auto | Always` for ANSI text coloring control.
 - `TextFormatter` and `TextFormatterConfig` also include `style_markup = disabled | builtin | full` so callers can choose whether style markup is parsed and whether custom tags are active.
+- `target_style_markup` and `fields_style_markup` independently control whether `target` and `fields` are parsed for style markup.
 - `message` also supports lightweight inline style tags such as `<red>...</>`, `<b>...</>`, `<#ff0000>...</>`, and `<bg:#202020>...</>`.
 - Builtin semantic tags now include `<accent>`, `<info>`, `<success>`, `<warning>`, `<danger>`, and `<muted>`.
 - Runtime style-tag APIs now include `TextStyle`, `StyleTagRegistry`, `style_tag_registry()`, `default_style_tag_registry()`, `set_tag(...)`, and `define_alias(...)`.
@@ -313,7 +314,9 @@ match logger.file_runtime_state() {
 - `sink.text_formatter.template` currently supports fixed tokens: `{timestamp}`, `{timestamp_ms}`, `{level}`, `{target}`, `{message}`, and `{fields}`.
 - `sink.text_formatter.color_mode` currently supports `never`, `auto`, and `always`.
 - `sink.text_formatter.style_markup` currently supports `disabled`, `builtin`, and `full`.
+- `sink.text_formatter.target_style_markup` and `sink.text_formatter.fields_style_markup` currently support `disabled`, `builtin`, and `full`.
 - `sink.text_formatter.style_tags.<name>` currently supports `fg`, `bg`, `bold`, `dim`, `italic`, and `underline`.
+- `fields_style_markup` currently applies to field values only, not field keys.
 - Config-driven sink assembly currently supports `console`, `json_console`, `text_console`, and `file`.
 - `queue` remains a synchronous bounded wrapper around the final sink, not an async runtime.
 

docs/changes/0.4.0.md

@@ -17,6 +17,7 @@ version 0.4.0
 - feat: add `StyleMarkupMode = Disabled | Builtin | Full` plus formatter helpers so callers can explicitly disable style parsing or allow builtin-only parsing
 - feat: support `sink.text_formatter.style_markup` in JSON config parsing and serialization
 - feat: add builtin semantic style tags such as `accent`, `info`, `success`, `warning`, `danger`, and `muted`
+- feat: add independent `target_style_markup` and `fields_style_markup` controls for `TextFormatter` and `TextFormatterConfig`
 
 ### Test
 
@@ -29,6 +30,7 @@ version 0.4.0
 - test: cover formatter `style_tags` JSON parsing, config roundtrip, JSON helper export, and config-driven styled formatter rendering
 - test: cover disabled markup mode, builtin-only mode, and config-driven `style_markup` behavior
 - test: cover builtin semantic tag rendering and confirm user overrides still take precedence
+- test: cover target and field markup rendering, plus config roundtrip for the new formatter markup scopes
 
 ### Example
 
@@ -44,3 +46,4 @@ version 0.4.0
 - formatter-local tag lookup currently takes precedence over global tag lookup, and global lookup takes precedence over builtin tags
 - JSON config currently supports concrete style objects only; alias-style declarations remain runtime-only
 - users can now decide whether custom style parsing is enabled through runtime formatter APIs or `sink.text_formatter.style_markup`
+- `fields_style_markup` currently styles field values only and intentionally leaves field keys raw