Changes

This bug, [https://bugzilla.mozilla.org/show_bug.cgi?id=65794 Bug 65794]: The default setting for an attachment's Content-Disposition is 'inline' (and there is no UI to change it). "very old, very annoying, gets lots of dupes, and is easily fixable. See also this mz thread:[http://forums.mozillazine.org/viewtopic.php?p=536030this mz thread]." [https://bugzilla.mozilla.org/show_bug.cgi?id=147461 Bug 147461] and [https://bugzilla.mozilla.org/show_bug.cgi?id=229075 bug 229075]: The actual handling of Content-Disposition is inconsistent; types that Mozilla knows how to render (image/jpeg, text/plain) will be shown inline even with Content-Disposition set to 'attachment', and other attachments with Content-Disposition set to 'inline' are not shown inline. This latter problem can even suppress display of the message body itself ([https://bugzilla.mozilla.org/show_bug.cgi?id=182627 bug 182627]). [https://bugzilla.mozilla.org/show_bug.cgi?id=76804 Bug 76804]: A plain text message with an HTML attachment shown inline will assume the coloration of the attachment. === RFC822 Attachments and .EML files === There are numerous bugs opened about these items, with most symptoms seen in both the attached mail message and the saved mail file. Fixing these would not only make life easier for users&mdash;it would make life easier for testers! An attached message can be opened in its own message window; however, doing so puts an '''error in the JavaScript console''' ([https://bugzilla.mozilla.org/show_bug.cgi?id=231282 bug 231282]). All attachments of the "parent" message (including the forwarded message itself) are shown in that window's attachment panel ([https://bugzilla.mozilla.org/show_bug.cgi?id=203570 bug 203570]). Obversely, if the attached message itself has attachments, those are shown in the attachment panel of its "parent" message ([https://bugzilla.mozilla.org/show_bug.cgi?id=35587 bug 35587]). A .EML file can be opened in its own message window (via the File|Open menu). That window does not display with a normal envelope panel, but instead is rendered as the Mozilla browser renders a .EML file ([https://bugzilla.mozilla.org/show_bug.cgi?id=241212 bug 241212]). However, it is not possible to open the .EML file via a command line ([https://bugzilla.mozilla.org/show_bug.cgi?id=242959 bug 242959]). For both the opened attachment and the opened .EML file:* Most of the actions that you might want to perform on the message (Forward, Reply, Edit as New, View Source, Create Filter From Message) are disabled (or enabled but nonfunctional) ([https://bugzilla.mozilla.org/show_bug.cgi?id=204350 bug 204350], [https://bugzilla.mozilla.org/show_bug.cgi?id=241213 bug 241213] and their dependents).* Display of the message's own attachments are not right ([https://bugzilla.mozilla.org/show_bug.cgi?id=174692 bug 174692] and [https://bugzilla.mozilla.org/show_bug.cgi?id=206278 bug 206278]).* It should be possible to file (import) the attachment or the .EML file directly into a mail folder ([https://bugzilla.mozilla.org/show_bug.cgi?id=11013 bug 11013] / [https://bugzilla.mozilla.org/show_bug.cgi?id=226877 bug 226877], [https://bugzilla.mozilla.org/show_bug.cgi?id=204612 bug 204612]). In fact, if you try to "file" one of these attachments or files by opening it into its own message window and using the <tt>&nbsp;Message | Copy To | ''folder''&nbsp;</tt> menu, '''the program gets into an unstable state''' that prevents normal message movement and other actions ([https://bugzilla.mozilla.org/show_bug.cgi?id=259522 bug 259522]).