[ErrorHandler] Code highlighting on PHP 8.3 is broken on rendered exception pages #57354
Description
Symfony version(s) affected
7.1.1
Description
PHP 8.2:
PHP 8.3:
How to reproduce
Throw an exception on PHP 8.3 and make sure that the error handler catches and renders it on an HTML page.
Possible Solution
In #51586 the rendering code was changed to replace all spaces with , even those within HTML tags. That ultimately breaks the rendering.
I quickly tried to remove that replacement, change .trace-code li code to use white-space: pre; and change the final trim() to rtrim(), but the result is not quite sufficient:
Presumably something in the multiline splitting logic needs to be adjusted.
Additional Context
No response