field newname
 
 constructor dialog {} {
-       global all_heads current_branch
+       global current_branch
 
        make_toplevel top w
        wm title $top "[appname] ([reponame]): Rename Branch"
 
        frame $w.rename
        label $w.rename.oldname_l -text {Branch:}
-       eval tk_optionMenu $w.rename.oldname_m @oldname $all_heads
+       eval tk_optionMenu $w.rename.oldname_m @oldname [load_all_heads]
 
        label $w.rename.newname_l -text {New Name:}
        entry $w.rename.newname_t \
 }
 
 method _rename {} {
-       global all_heads current_branch
+       global current_branch
 
        if {$oldname eq {}} {
                tk_messageBox \
                return
        }
 
-       set oldidx [lsearch -exact -sorted $all_heads $oldname]
-       if {$oldidx >= 0} {
-               set all_heads [lreplace $all_heads $oldidx $oldidx]
-       }
-       lappend all_heads $newname
-       set all_heads [lsort $all_heads]
-       populate_branch_menu
-
        if {$current_branch eq $oldname} {
                set current_branch $newname
        }