[screen-devel] [bug #54556] screen is producing invalid TERMCAPs

[Scott Shambarger]

Follow-up Comment #4, bug #54556 (project screen):

I don't think this affects ncurses6... 

If I use the "too-long" TERMCAP below, and edit the terminal-name to something
that doesn't have a terminfo entry (say, "yterm"), set TERM=yterm, and then
run some apps...

ncurses6 emacs:

emacs: Terminal type yterm is not defined.
If that is not the actual type of terminal you have,
use the Bourne shell command 'TERM=...; export TERM' (C-shell:
'setenv TERM ...') to specify the correct type.  It may be necessary
to do 'unset TERMINFO' (C-shell: 'unsetenv TERMINFO') as well.

ncurses5.4 emacs (/usr/bin/emacs shipped with OSX 10.13):

"TERMCAP", line 1, col 1, terminal 'SC': Missing separator

I'm guessing ncurses6 typically doesn't have a fallback to TERMCAP, but older
versions (at least as configured on OSX), do.

If you have a terminfo entry for TERM, then that is used in both cases, and
TERMCAP is ignored - and so you won't see an error (screen.xterm-256color
isn't in the ncurses5 terminfo database on OSX though...)



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