Hi,

Auto formatting (Ctrl+T) does not work if there are:

const char webSite1[] PROGMEM = R"=====(
"abc"
)=====";

But Auto formatting works if there is no line break:

const char webSite1[] PROGMEM = R"=====("abc")=====";

In both cases the compilation is successful.

Arduino IDE 1.8.13 (Linux)