$COLUMNS must be unset to not interfere with the tests. The tests
already ignore the terminal size because output is redirected to a
file, but COLUMNS overrides terminal size detection and changes the
test output away from the standard 80.
Reported-by: Jeff King <peff@peff.net>
Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
# /usr/xpg4/bin/sh and /bin/ksh to bail out. So keep the unsets
# deriving from the command substitution clustered with the other
# ones.
-unset VISUAL EMAIL LANGUAGE $(perl -e '
+unset VISUAL EMAIL LANGUAGE COLUMNS $(perl -e '
my @env = keys %ENV;
my $ok = join("|", qw(
TRACE