Hi!
I encountered a strange problem. As background, pbpaste is a command line
utility on OSX that prints out the clipboard.
I discovered that when I call pbpaste from scheme: (shell "pbpaste"), the qt
version of TeXmacs 1.0.7.9 gets stuck for a long time, whereas my old version
of TeXmacs, the non-Qt version, doesn't. This only happens if copying was done
in TeXmacs, but not if I copy from another program.
The same does not happen if I run a shell session inside TeXmacs and call
pbpaste.
I suspect that it is some kind of race condition. TeXmacs waits for the shell
to complete, and TeXmacs owns the clipboard, so it is supposed to answer a
query or some such. It is interesting that this only happens in the Qt version.
My problem is that I'm trying to write code that converts the clipboard to a
different format, and then inserts it as the point.
The code looks like this:
---
(kbd-map ("R R ."
(shell "convert_pb2R.pl &") ;; <-- look here
(shell "sleep 5") ;; <- optional
(clipboard-paste "primary")
))
--
The problem is this: if I don't fork the command convert_pb2R.pl, then TeXmacs
gets stuck.
If I do fork it, then TeXmacs doesn't get stuck. But, no matter how much I
sleep in the next command, the convert command never finishes before the next
command is issued . I suspect this is because the request to get the clipboard
contents that is issued by convert_pb2R.pl is only answered AFTER everything
finished. So, clipboard-paste always pastes the old contents.
Exactly the same worked on the old version of TeXmacs. It must be a difference
in how the clipboard is handled.
Michael
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