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Changes between Initial Version and Version 1 of Ticket #57242, comment 4

initial	v1
4	4	> Some web-servers returns Forbidden error if filename contains redundant dot, for example: filename..jpg
5	5
6		It sounds like `..` triggers some security rule on the server, e.g. to prevent directory traversal. This appears to be similar to #45368, also that ticket is about `..` in post content.
	6	It sounds like `..` triggers some security rule on the server, e.g. to prevent directory traversal. This appears to be similar to #45368, although that ticket is about `..` in post content.
7	7
8	8	Applying `rtrim( $filename, '.' )` before appending the extension probably makes sense. On the other hand, as noted above, that does not fix the issue if `..` is in the middle of the file name.