Zle display bug with LONG expansions

["Bart Schaefer" <schaefer@xxxxxxxxxxxxxxxxxxxxxxx>]

In an 80x32 (or smaller?) xterm, do the following:

zagzig[38] echo **/*<TAB>

You get something like this:

zagzig[38] >....
hashtable.h.orig Src/hashtable.o Src/hashtable.pro Src/hist.c Src/hist.c.orig Sr
c/hist.o Src/hist.pro Src/init.c Src/init.c.orig Src/init.o Src/init.pro Src/inp
ut.c Src/input.c.orig Src/input.o Src/input.pro Src/jobs.c Src/jobs.o Src/jobs.p
ro Src/lex.c Src/lex.c.orig Src/lex.o Src/lex.pro Src/linklist.c Src/linklist.o
Src/linklist.pro Src/loop.c Src/loop.o Src/loop.pro Src/makepro.sed Src/math.c S
rc/math.o Src/math.pro Src/mem.c Src/mem.o Src/mem.pro Src/params.c Src/params.c
.orig Src/params.o Src/params.pro Src/parse.c Src/parse.c.orig Src/parse.o Src/p
arse.pro Src/prototypes.h Src/prototypes.h.orig Src/signals.c Src/signals.h Src/
signals.o Src/signals.pro Src/signames.awk Src/signames.h Src/subst.c Src/subst.
o Src/subst.pro Src/system.h Src/tags Src/text.c Src/text.o Src/text.pro Src/uti
ls.c Src/utils.c.orig Src/utils.o Src/utils.pro Src/version.h Src/watch.c Src/wa
tch.o Src/watch.pro Src/zle.h Src/zle_bindings.c Src/zle_bindings.o Src/zle_bind
ings.pro Src/zle_hist.c Src/zle_hist.o Src/zle_hist.pro Src/zle_main.c Src/zle_m
ain.c.orig Src/zle_main.o Src/zle_main.pro Src/zle_misc.c Src/zle_misc.o Src/zle
_misc.pro Src/zle_move.c Src/zle_move.o Src/zle_move.pro Src/zle_refresh.c Src/z
le_refresh.o Src/zle_refresh.pro Src/zle_tricky.c Src/zle_tricky.c.0 Src/zle_tri
cky.c.1 Src/zle_tricky.c.orig Src/zle_tricky.o Src/zle_tricky.pro Src/zle_utils.
c Src/zle_utils.o Src/zle_utils.pro Src/zle_vi.c Src/zle_vi.o Src/zle_vi.pro Src
/zle_word.c Src/zle_word.o Src/zle_word.pro Src/zsh Src/zsh.h Src/zsh.h.orig Src
/ztype.h StartupFiles StartupFiles/Makefile StartupFiles/Makefile.in StartupFile
s/zlogin StartupFiles/zshenv StartupFiles/zshrc Util Util/Makefile Util/Makefile
.in Util/helpfiles Util/reporter Util/zsh-development-guide acconfig.h aclocal.m
4 config.cache config.guess config.h config.h.in config.log config.status config
.sub configure configure.in install-sh mkinstalldirs stamp-h stamp-h.in

Note that this uses only 25 of the available 32 lines.  Now type Ctrl-A to
go to the beginning of the expansion; you get:

intro.ms Doc/zsh.1 Doc/zsh.info Doc/zsh.info-1 Doc/zsh.info-2 Doc/zsh.info-3 Doc
/zsh.info-4 Doc/zsh.info-5 Doc/zsh.info-6 Doc/zsh.info-7 Doc/zsh.man Doc/zsh.tex
i Doc/zsh.texi.orig Doc/zshall.1 Doc/zshall.man Doc/zshbuiltins.1 Doc/zshbuiltin
s.man Doc/zshcompctl.1 Doc/zshcompctl.man Doc/zshexpn.1 Doc/zshexpn.man Doc/zshm
isc.1 Doc/zshmisc.man Doc/zshmisc.man.orig Doc/zshoptions.1 Doc/zshoptions.man D
oc/zshparam.1 Doc/zshparam.man Doc/zshzle.1 Doc/zshzle.man Etc Etc/BUGS Etc/CONT
RIBUTORS Etc/FAQ Etc/FEATURES Etc/MACHINES Etc/Makefile Etc/Makefile.in Etc/NEWS
 Functions Functions/Makefile Functions/Makefile.in Functions/acx Functions/cdma
tch Functions/cdmatch2 Functions/cx Functions/harden Functions/mere Functions/mu
lticomp Functions/proto Functions/randline Functions/run-help Functions/yp Funct
ions/yu Functions/zed INSTALL META-FAQ Makefile Makefile.in Misc Misc/Makefile M
isc/Makefile.in Misc/c2z Misc/compctl-examples Misc/lete2ctl README Src Src/Make
file Src/Makefile.in Src/TAGS Src/ansi2knr.c Src/builtin.c Src/builtin.o Src/bui
ltin.pro Src/compat.c Src/compat.o Src/compat.pro Src/cond.c Src/cond.o Src/cond
.pro Src/exec.c Src/exec.c.orig Src/exec.o Src/exec.pro Src/glob.c Src/glob.o Sr
c/glob.pro Src/globals.h Src/globals.h.orig Src/hashtable.c Src/hashtable.h Src/
hashtable.h.orig Src/hashtable.o Src/hashtable.pro Src/hist.c Src/hist.c.orig Sr
c/hist.o Src/hist.pro Src/init.c Src/init.c.orig Src/init.o Src/init.pro Src/inp
ut.c Src/input.c.orig Src/input.o Src/input.pro Src/jobs.c Src/jobs.o Src/jobs.p
ro Src/lex.c Src/lex.c.orig Src/lex.o Src/lex.pro Src/linklist.c Src/linklist.o
Src/linklist.pro Src/loop.c Src/loop.o Src/loop.pro Src/makepro.sed Src/math.c S
rc/math.o Src/math.pro Src/mem.c Src/mem.o Src/mem.pro Src/params.c Src/params.c
.orig Src/params.o Src/params.pro Src/parse.c Src/parse.c.orig Src/parse.o Src/p
arse.pro Src/prototypes.h Src/prototypes.h.orig Src/signals.c Src/signals.h Src/
signals.o Src/signals.pro Src/signames.awk Src/signames.h Src/subst.c Src/subst.
o Src/subst.pro Src/system.h Src/tags Src/text.c Src/text.o Src/text.pro Src/uti
ls.c Src/utils.c.orig Src/utils.o Src/utils.pro Src/version.h Src/watch.c Src/wa
tch.o Src/watch.pro Src/zle.h Src/zle_bindings.c Src/zle_bindings.o Src/zle_bind
ings.pro Src/zle_hist.c Src/zle_hist.o Src/zle_hist.pro Src/zle_main.c Src/zle_m
ain.c.orig Src/zle_main.o Src/zle_main.pro Src/zle_misc.c Src/zle_misc.o Src/zle
_misc.pro Src/zle_move.c Src/zle_move.o Src/zle_move.pro Src/zle_refresh.c Src/z

With one blank line at the end of the screen, and the cursor on the "c" of
"intro.ms Doc/...".  Scrolled off the top of the screen is:

zagzig[38] echo ChangeLog Doc Doc/Makefile Doc/Makefile.in Doc/ansi2knr.man Doc/

If you then type the <redisplay> binding, you get:

_misc.pro Src/zle_move.c Src/zle_move.o Src/zle_move.pro Src/zle_refresh.c Src/

With the cursor on the "r" in "Src/zle_move.c".

I don't know why the first expansion uses only 25 lines.  The second bug
with the blank line at the end of the screen and the prompt scrolled off
is caused by auto-wraparound in the xterm, but if you turn that off, the
line *never* wraps, so you can never see more than the last line of the
expansion.  The third bug is just weird.

-- 
Bart Schaefer                             Brass Lantern Enterprises
http://www.well.com/user/barts            http://www.nbn.com/people/lantern

New male in /home/schaefer:
>N  2 Justin William Schaefer  Sat May 11 03:43  53/4040  "Happy Birthday"