I've been following this thread albeit with a little confusion, and then it hit me. This is the problem with Ubuntu. There is just to much "hand holding" and now people are expecting that Ubuntu should do everything for them and anything they desire. Ubuntu provides a stable texmacs version, if you want the very latest version it's not Ubuntu's responsiblity to provide that the second it is available. Linux is not Windows, there will not always be the very latest program available for you to double-click and install, there is a standard version provided with the release so if you want the latest version it will require some work. The great thing about Debian derivatives is that this is rather trivial. If I wanted the latest version of texmacs I would:
1) Download the latest source and extract it into ~/.installed_programs/TeXmacs-1.0.7.1
2) Open a terminal and cd to ~/.installed_programs/TeXmacs-1.0.7.1
3) Run 'sudo apt-get build-dep texmacs'
4) Run './configure && make && sudo make install'
Done. Nine times out of ten that's all that's needed to have the latest version installed.
/Bob
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