using schedule_function() within scheduled function prevents loop from running

[hreintke]

Platform

• Hardware: Wemos D1
• Core Version: Latest git
• Development Env: Sloeber ide
• Operating System: Windows

Problem Description

When using schedule_function() within a scheduled function, the run_scheduled_functions() will never return,
This has been working before, I do not know yet which of the scheduled functions PR removed the functionality.

MCVE Sketch

#include "Arduino.h"
#include "Schedule.h"

void cp()
{
	static int c = 0;
	if ((c++ % 10000) == 0 ) Serial.printf(".");
	schedule_function(cp);
}

void setup()
{
	Serial.begin(115200);
	schedule_function(cp);
}

void loop()
{
	static int l = 0;
	if ((l++ % 10000) == 0 ) Serial.printf(":");
}

[d-a-v]

@dok-net I haven't checked yet, maybe you already have an idea.