URxvt blinking text is disabled if background color is specified
08:13 01 May 2026

If I do

echo -e '\033[31m\033[5mHello\033[0m'

I get red (\033[31m) blinking (\033[5m) text both in XTerm and URxvt.

However, if I enter

echo -e '\033[41m\033[5mHello\033[0m'

which should set the red background (\033[41m) (instead of foreground \033[31m) under a blinking (\033[5m) text, I see it working as expected in XTerm, but the blinking is off in URxvt:

no blinking on background

Swapping the two escape sequences has no effect.

Is this a bug or "feature" of URxvt? Or how can I make the text blink when a background is specified?

terminal ansi-escape ansi urxvt