* add default sort column, set by scols_sort_table()
* sort tree according to default sort column also in scols_sort_table_by_tree()
The function scols_sort_table() does not sort tree branches if tree
is not enabled. The function scols_sort_table_by_tree() does not care
if tree is enabled and it always follows parent->child relations. For
scols_sort_table_by_tree() we need to follow order in branches if
previously scols_sort_table() has been called.
For example lsblk calls
scols_sort_table(tb, cl);
scols_sort_table_by_tree(tb);
for list-like output (for example lsblk -P) and users assume the
same order as for tree (lsblk --tree).
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1940607
Signed-off-by: Karel Zak <kzak@redhat.com>
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