10 Debatable Issues and What Was Decided

• The uuencode method does not always work.

  Due to the design of tramp, the encoding and decoding programs need to read from stdin and write to stdout. On some systems, uudecode -o - will read stdin and write the decoded file to stdout, on other systems uudecode -p does the same thing. But some systems have uudecode implementations which cannot do this at all—it is not possible to call these uudecode implementations with suitable parameters so that they write to stdout.

  Of course, this could be circumvented: the begin foo 644 line could be rewritten to put in some temporary file name, then uudecode could be called, then the temp file could be printed and deleted.

  But I have decided that this is too fragile to reliably work, so on some systems you'll have to do without the uuencode methods.

• tramp does not work on XEmacs 20.

  This is because it requires the macro with-timeout which does not appear to exist in XEmacs 20. I'm somewhat reluctant to add an emulation macro to tramp, but if somebody who uses XEmacs 20 steps forward and wishes to implement and test it, please contact me or the mailing list.

• The tramp filename syntax differs between GNU Emacs and XEmacs.

  The GNU Emacs maintainers wish to use a unified filename syntax for Ange-FTP and tramp so that users don't have to learn a new syntax. It is sufficient to learn some extensions to the old syntax.

  For the XEmacs maintainers, the problems caused from using a unified filename syntax are greater than the gains. The XEmacs package system uses EFS for downloading new packages. So, obviously, EFS has to be installed from the start. If the filenames were unified, tramp would have to be installed from the start, too.