That depends on the language — whereas German puts spaces around —, English afaik usually doesn’t.

Similarly, French puts spaces before and after ? ! while English and German only put spaces afterwards.

[EDIT: I originally wrote that French treats . , ! ? specially. In reality, french only treats ? and ! specially.]

In German you use en-dashes with spaces, whereas in English it’s em-dashes without spaces. Some people dislike em-dashes in English though and use en-dashes with spaces as well.

French doesn't put one before the period.

french does "," and "." like the british and germans the rest is space befor space after