Tracking issue for pattern formatters

[Lancern]

This issue tracks the development progress of pattern formatters. The development takes place under branch pattern-formatter.

• Basic pattern combinators
• pattern!
• Atom patterns (reference: spdlog patterns)
  • Literal string
  • Payload ({v}, {payload})
  • Thread ID ({t}, {tid})
  • Process ID ({p}, {pid})
  • Logger name ({n}, {logger})
  • Log level ({l}, {level})
  • Short log level ({L}, {level-short})
  • Abbreviated weekday name ({a}, {weekday-name})
  • Full weekday name ({A}, {weekday-name-full})
  • Abbreviated month name ({b}, {month-name})
  • Full month name ({B}, {month-name-full})
  • Full date time ({c}, {datetime})
  • 2-digit year ({C}, {year-short})
  • 4-digit year ({Y}, {year})
  • Short date ({D}, {date-short})
  • Month 01-12 ({m}, {month})
  • Day of month 01-31 ({d}, {day})
  • Hours in 24 format 00-23 ({H}, {hour})
  • Hours in 12 format 01-12 ({I}, {hour-12})
  • Minutes 00-59 ({M}, {minute})
  • Seconds 00-59 ({S}, {second})
  • Millisecond part of the current second 000-999 ({e}, {millisecond})
  • Microsecond part of the current second 000000-999999 ({f}, {microsecond})
  • Nanosecond part of the current second 000000000-999999999 ({F}, {nanosecond})
  • AM / PM ({p}, {ampm})
  • 12 hour clock ({r}, {time-12})
  • 24 hour HH:MM time ({R}, {time-short})
  • ISO 8601 time format (HH:MM:SS) ({T}, {X}, {time})
  • ISO 8601 offset from UTC in timezone ([+/-] HH:MM) ({z}, {tz-offset})
  • Seconds since epoch ({E}, {unix})
  • Full formatter ({+}, {full})
  • Color range ({^...$})
  • Source file, line and column ({@}, {loc})
  • Basename of source file ({s}, {source-basename})
  • Full or relative path of the source file ({g}, {source})
  • Source line ({#}, {line})
  • Source column ({%}, {column})

[Lancern]

The development status of the pattern formatters are now tracked in PR #12.