Logs_fmt (reference.logs.logs.fmt.Logs

Reporter

val reporter : 
  ?pp_header:(Logs.level * string option) Fmt.t ->
  ?app:Format.formatter ->
  ?dst:Format.formatter ->
  unit ->
  Logs.reporter

reporter is like Logs.format_reporter except ANSI colors may be used in message header rendering if the formatters are configured to do so; see Fmt.set_style_renderer and Fmt_tty.

Consult a full command line setup example.

Colored message headers

Sourceval app_style : Fmt.style

app_style is the style used to render headers at app level.

Sourceval err_style : Fmt.style

err_style is the style used to render headers at error level.

Sourceval warn_style : Fmt.style

warn_style is the style used to render headers at warning level.

Sourceval info_style : Fmt.style

info_style is the style used to render headers at info level.

Sourceval debug_style : Fmt.style

debug_style is the style used to render headers at debug level.

Sourceval pp_header : (Logs.level * string option) Fmt.t

pp_header is like Logs.pp_header but may use ANSI colors if the formatter is configured to do so, see Fmt.set_style_renderer and Fmt_tty.