linhes/mythtv/negative_time_values.patch


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diff --git a/mythtv/libs/libmythbase/mythdate.cpp b/mythtv/libs/libmythbase/mythdate.cpp
index 8f3397241a6..21a307cb453 100644
--- a/mythtv/libs/libmythbase/mythdate.cpp
+++ b/mythtv/libs/libmythbase/mythdate.cpp
@@ -237,6 +237,9 @@ QString formatTime(std::chrono::milliseconds msecs, QString fmt)
     static const QRegularExpression sRe("s+");
     static const QRegularExpression zRe("z+");
 
+    bool negativeTime = msecs < 0ms;
+    msecs = std::chrono::milliseconds(std::abs(msecs.count()));
+
     QRegularExpressionMatch match = hRe.match(fmt);
     if (match.hasMatch())
     {
@@ -272,6 +275,10 @@ QString formatTime(std::chrono::milliseconds msecs, QString fmt)
         QString text = StringUtil::intToPaddedString(value, width);
         fmt.replace(match.capturedStart(), match.capturedLength(), text);
     }
+
+    if (negativeTime)
+        fmt.prepend("-");
+
     return fmt;
 }