Package: ttyrec Version: 1.0.8-3 Severity: wishlist Tags: patch ttyplay in peek mode works ok if the user is working at the command prompt, because you immediatly see the output of their next command, followed by the shell prompt. But if you peek at a user who is editing a file, or playing nethack, or whatever, it fails badly, because you don't see the context of what was already on their screen before you started peeking.
One way to deal with this is to run: ttyplay -s ttyrecord ; ttyplay -p ttyrecord This makes sure all context is displayed. But this also has problems, because it will display too *much* context. Which can take quite a while to shove out a network socket or even display in gnome terminal. nethack.alt.org seems to deal with this by only displaying the context starting with the current nethack level (or something like that). My idea in the attached patch is to add a parameter, -P, that can be used to specify how many ttyrec frames of context to display before starting peek mode. (Note that I wrote it rather suboptimally; it reads the file once to get the total number of frames, then rewinds and reads it again. That could be done much smarter, but it works, and the speed is not really noticiable.) The other problem with my patch is, how to determine a good number of frames of context to show? After all, ttyrec will tend to record one frame per command run if the command outputs all lines at once. But if I'm in an editor, each letter written tends to go to a new frame. So, a value like 1000 frames is sometimes too small, and often really too large. Maybe what it really needs to do is look for the last frame that contains a particular, configurable character string, and play that frame, and all frames after. In the nethack example, that could be a string displayed when the user changes levels. In my use case, it would be a VT100 screen clear code. -- System Information: Debian Release: squeeze/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable') Architecture: i386 (i686) Kernel: Linux 2.6.31-1-686 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages ttyrec depends on: ii libc6 2.10.2-2 GNU C Library: Shared libraries ttyrec recommends no packages. ttyrec suggests no packages. -- debconf-show failed -- see shy jo
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