I hear this is a long-standing issue with the ‘pre’ tags — when you are displaying a code block inside <pre> tags, you need to escape all instances of < (left angle brackets).
Is there an automatic fix for this? — (I mean) so that I don’t have to manually replace all instances of < with < in every post I make.
My Suggestion as an “Auto” fix of sorts, is a str_replace on the string your putting into your pre tag. Assuming of course your using PHP, but each language has its equivalent I suppose.
That’s kind of a simplified version of it. You can use arrays are your search/replace string as well.