#17 pstree renders terminal unusable sometimes

[Alexander E. Patrakov]

This is a bad incarnation of
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=265553

As said there:

psmisc generates a line including escape sequences,
and then truncates it to fit in the width of the screen. It
adds this "+" to indicate the line was chopped. Since it
doesn't take the escape sequences into account, the
lines are often truncated at much shorter than
$COLUMNS displayable characters, and also it could
chop a line in the middle of an escape sequence

If that happens while pstree outputs line-drawing characters
in the last output line, the terminal becomes unusable. See
the attached typescript. Relevant environment variables:

LANG=ru_RU.KOI8-R
TERM=xterm

The version of NCurses is 20050319. xterm is started as
"LANG=ru_RU.KOI8-R xterm -lc"

[Alexander E. Patrakov]

Broken typescript

[Craig Small]

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I'm trying to find a nice way of pstree detecting this sort
of terminal and doing the right thing. I suspect the REAL
fix is to remove the hard-coded evilness that does the line
drawing characters and make proper curses calls.

[Alexander E. Patrakov]

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A hackish fix is available at:

http://www.linuxfromscratch.org/~alexander/patches/psmisc-21.6-acsc-1b.patch

[Alexander E. Patrakov]

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Actually, I'd prefer dropping the code that draws lines
using escape sequences. It's just too buggy.

[Nobody/Anonymous]

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http://bugs.debian.org/288856 is a duplicate of this

[Craig Small]

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a work-around is in place for 21.7 onwards, it will default
to ASCII type.