Sort fix tests from Alexandre Fiori.

(cherry picked from commit 31b622781b)

regress/list-keys-sort-name.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+
+# list-keys -O name orders by table name, then by key within each table
+
+PATH=/bin:/usr/bin
+TERM=screen
+
+[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
+TMUX="$TEST_TMUX -LtestLKSN$$ -f/dev/null"
+$TMUX kill-server 2>/dev/null
+
+TMP=$(mktemp)
+trap "rm -f $TMP*; $TMUX kill-server 2>/dev/null" 0 1 15
+
+$TMUX new -d || exit 1
+
+F='#{key_table} #{key_string}'
+
+# Expected: each table in name order, keys in the table's own (key) order.
+for t in $($TMUX list-keys -F '#{key_table}' | LC_ALL=C sort -fu); do
+	$TMUX list-keys -T $t -F "$F"
+done >$TMP.exp
+[ -s $TMP.exp ] || exit 1
+
+$TMUX list-keys -O name -F "$F" >$TMP.out
+cmp -s $TMP.exp $TMP.out || exit 1
+
+# Reversed is the exact reverse.
+$TMUX list-keys -O name -r -F "$F" |
+	awk '{ l[NR] = $0 } END { for (i = NR; i > 0; i--) print l[i] }' \
+	>$TMP.out
+cmp -s $TMP.exp $TMP.out || exit 1
+
+exit 0