ad_new_sort_by key keysWhat it does:
Makes a new sort_by string, sorting by "key". If the key is followed by "*", that indicates the ordering should be reversed from the default ordering for that key. Old sort keys are retained, so the sort appears to be a little more stable. That is, suppose two things are sorted into an order, and their values for a different column are the same. If that different column is used as the primary sort key to reorder, the things which have the same value for the newly-sorted column will remain in the same relative order.Defined in: /web/philip/packages/acs-core/table-display-procs.tcl
Source code:
if { $keys == "" } { return $key } elseif { [regexp "^${key}(\\*?)," "$keys," match reverse] } { # if this was already the first key, then reverse order if { $reverse == "*" } { regsub "\\*," "$keys," "," keys } else { regsub "," "$keys," "*," keys } regsub ",$" $keys "" keys return $keys } else { regsub ",$key\\*?," "$keys," "," keys regsub ",$" $keys "" keys return "$key,$keys" }