[Bug 78435]

[yannack]

This has been bugging me too for a while. All my .tar.gz attachments can only be opened once, then I need to manually remove them in /tmp. Maybe an exception for *.tar.[a-z0-9]{2,3} as was suggested before ? 
Or how about adding the numbered suffix to the first text string :
.mozconfig -> .mozconfig-1
mydocuments.tar.gz -> mydocuments-1.tar.gz
Only "weird cases" would be:
my.documents.zip -> my-1.documents.zip
my.documents.tar.gz -> my-1.documents.tar.gz

(something which would match the following regex, more or less)
(?:^[.]?)([a-zA-Z0-9]+)(?:\.|$)

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https://bugs.launchpad.net/bugs/78435

Title:
  temporary filenames should handle multiple extensions (.tar.gz)

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