interval=persist stops working after a while

[tastytea]

The program prints the time every second. After a while (usually between 1 and 3 days), the block is not updated anymore. This always seems to happen right after a resume from suspend, but not after every resume. The program does not crash and if I run it in a terminal it works fine. I never see the error message (see below) in the block.

I use this configuration:

[time]
command=statustime
interval=persist
markup=pango

First with this shell-script:

#!/bin/sh

while sleep 1; do
    LC_TIME="de_DE.UTF-8"
    datetime="$(date +'<b><span color="orange">%A</span></b>, %Y-%m-%d <span color="lightcyan">%H:%M</span>')"

    echo "${datetime}"
done

echo -e "\n<span color='red'>Error: Time script crashed.</span>"
exit 33

and now with this C++-program:

Details

#include <fmt/chrono.h>
#include <fmt/core.h>

#include <chrono>
#include <exception>
#include <iostream>
#include <locale>
#include <thread>

int main()
{
    using fmt::format;
    using std::cout;
    using namespace std::chrono_literals;

    // Set explicitly, because LC_TIME is en_DK.UTF-8.
    std::locale::global(std::locale("de_DE.UTF-8"));

    try
    {
        while (true)
        {
            cout << format(R"(<b><span color="orange">{0:%A}</span></b>, )"
                           R"({0:%Y-%m-%d} )"
                           R"(<span color="lightcyan">{0:%H:%M}</span>)",
                           std::chrono::system_clock::now())
                 << std::endl; // NOTE: Don't forget that we need to flush! 😊
            std::this_thread::sleep_for(1s);
        }
    }
    catch (const std::exception &e)
    {
        cout << "\n<span color='red'>Error: Time script crashed.</span>\n";
        std::cerr << e.what() << '\n';
        return 33;
    }
}

Might be related to #450.

[zsugabubus]

What you describe is basically like other xtitle issues… just with echo here. I bet #425 will solve your issues.

[tastytea]

Thank you! I ran i3blocks with your patch for 6 days now and the problem did not appear so far.