need option to fire all currently firing alerts after mute time interval is over.

What did you do?
I have a mute time interval of 2 hours.

mute_time_intervals:
  - name: maintenance-times
    time_intervals:
     - weekdays: ['Sunday']
     - times:
       - start_time: '10:00'
         end_time: '12:00'

and I have a repeat_interval of 4 hours.
repeat_interval: 4h

What did you expect to see?

We need an option to fire all currently firing alerts as soon as the mute time interval complets.

What did you see instead? Under which circumstances?

firing alerts do not get fired after the mute time interval is over.

they get fired only after 4 hours.

Environment

• System information:

  Linux 3.10.0-1062.el7.x86_64 x86_64

• Alertmanager version:

  0.25.0

• Prometheus version:
  2.37.8

• Alertmanager configuration file:

omitting irrelevant conf.

mute_time_intervals:
  - name: maintenance-times
    time_intervals:
     - weekdays: ['Sunday']
     - times:
       - start_time: '10:00'
         end_time: '12:00'

and I have a   repeat_interval of 4 hours.

  repeat_interval: 4h

• Prometheus configuration file:

Irrelevant ```

* Logs:

Irrelevant ```

Start by tracing how Alertmanager processes mute_time_intervals and repeat_interval for firing alerts, then reproduce the Sunday 10:00–12:00 configuration with a 4-hour repeat interval. The work is done when an explicit option causes currently firing alerts to be notified as soon as the mute interval ends, with the existing repeat behavior unchanged when the option is not enabled.