> In a very limited sense it is like this for most languages, at least ones where error traces include line:cols numbers or that give magic macros like php's __

> In a very limited sense it is like this for most languages, at least ones where error traces include line:cols numbers or that give magic macros like php's __LINE__. But generally people take the view that code that throws error traces with different line numbers can still be semantically equivalent, and that changing your code's behaviour depending on __LINE__ is unreasonable. Ultimately which files are considered equivalent will be a social convention, but it should be a social convention that fits the use cases and makes the file format easier to work with.