set after {}
        foreach path $paths {
                switch -glob -- [lindex $file_states($path) 0] {
+               _U -
+               U? {
+                       if {$path eq $current_diff_path} {
+                               unlock_index
+                               merge_stage_workdir $path
+                               return
+                       }
+               }
                _O -
                ?M -
                ?D -
-               ?T -
-               U? {
+               ?T {
                        lappend pathList $path
                        if {$path eq $current_diff_path} {
                                set after {reshow_diff;}