A trailing '/' in a file selector path raises a KeyError

[g5t]

Accessing a file via scippnexus with a relative or absolute path that ends in an extraneous '/' raises a KeyError due to attempting to access the empty path '' in the following code snippet

scippnexus/src/scippnexus/base.py

Lines 382 to 387 in 86a4bfe

	if '/' in sel:
	if sel.startswith('/'):
	return self.file[sel[1:]]
	else:
	grp, path = sel.split('/', 1)
	return self[grp][path]

I expected the trailing forward slash to not raise an error; and for accessing, e.g., '/entry' and /entry/', to result in the same object.

Is there a reason that a trailing '/' should raise an error?