} else {
                start_show_diff $cont_info
        }
+
+       global current_diff_path selected_paths
+       set selected_paths($current_diff_path) 1
 }
 
 proc show_unmerged_diff {cont_info} {
                }
                $ui_diff conf -state normal
                if {$type eq {submodule}} {
-                       $ui_diff insert end [append \
-                               "* " \
-                               [mc "Git Repository (subproject)"] \
-                               "\n"] d_info
+                       $ui_diff insert end \
+                               "* [mc "Git Repository (subproject)"]\n" \
+                               d_info
                } elseif {![catch {set type [exec file $path]}]} {
                        set n [string length $path]
                        if {[string equal -length $n $path $type]} {
                puts -nonewline $p $current_diff_header
                puts -nonewline $p [$ui_diff get $s_lno $e_lno]
                close $p} err]} {
-               error_popup [append $failed_msg "\n\n$err"]
+               error_popup "$failed_msg\n\n$err"
                unlock_index
                return
        }
                puts -nonewline $p $current_diff_header
                puts -nonewline $p $wholepatch
                close $p} err]} {
-               error_popup [append $failed_msg "\n\n$err"]
+               error_popup "$failed_msg\n\n$err"
        }
 
        unlock_index