[Bug 399148] [NEW] USR1 should be passed through by xdvi debian wrapper script

[Jesse]

Public bug reported:

the /usr/bin/xdvi wrapper around xdvi.bin doesn't handle SIGUSR1. some
utilities uses (the real) xdvi's SIGUSR1 to instruct the reader to
refresh the content. And what often happens on Debian systems is that
they end up finding the wrapping perl process (e.g. latexmk). So the
xdvi wrapper script should pass through this signal so that it works
transparently

To reproduce:
# apt-get install latexmk texlive-bin-base
$ <write a dummy .tex file>
$ latexmk -pvc dummy.tex
$ <change a dummy.tex a little, save>
expected behavior: xdvi refreshes its content
what happens: it doesn't, coz USR1 is lost at the wrapper

** Affects: texlive-bin (Ubuntu)
     Importance: Undecided
         Status: New

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USR1 should be passed through by xdvi debian wrapper script
https://bugs.launchpad.net/bugs/399148
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