refs: manage current_ref within do_one_ref()

diff --git a/t/test-lib.sh b/t/test-lib.sh
index d75766adaf127bbe77022da4ba1e2af1fbdff878..b7d7100c4e5c060c1956e5d4f372fa1fa6ee8c85 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -42,10 +42,11 @@ TZ=UTC
 TERM=dumb
 export LANG LC_ALL PAGER TERM TZ
 EDITOR=:
-unset VISUAL
-unset EMAIL
-unset LANGUAGE
-unset $(perl -e '
+# A call to "unset" with no arguments causes at least Solaris 10
+# /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 COLUMNS $(perl -e '
        my @env = keys %ENV;
        my $ok = join("|", qw(
                TRACE