Eskil

    unset -nocomplain \
            ::eskil($top,leftFileBak) ::eskil($top,rightFileBak) \
            ::eskil($top,leftFileDiff) ::eskil($top,rightFileDiff)
}

# GUI for plugin selection
proc EditPrefPlugins {top {dirdiff 0}} {
    set wt $top.prefplugin

    # Create window
    destroy $wt
    toplevel $wt -padx 3 -pady 3
    ttk::frame $wt._bg
    place $wt._bg -x 0 -y 0 -relwidth 1.0 -relheight 1.0 -border outside
    wm title $wt "Preferences: Plugins"

    set plugins [listPlugins]
    if {[llength $plugins] == 0} {
        grid [ttk::label $wt.l -text "No plugins found."] - -padx 3 -pady 3
    }
    if {![info exists ::eskil($top,pluginname)]} {
        set ::eskil($top,pluginname) ""
    }
    if {![info exists ::eskil($top,plugininfo)]} {
        set ::eskil($top,plugininfo) ""
    }
    if {![info exists ::eskil($top,pluginallow)]} {
        set ::eskil($top,pluginallow) 0
    }
    set ::eskil($top,edit,pluginname) $::eskil($top,pluginname)
    set ::eskil($top,edit,plugininfo) $::eskil($top,plugininfo)
    set ::eskil($top,edit,pluginallow) $::eskil($top,pluginallow)
    set t 0
    foreach {plugin info} $plugins {
        set descr [dict get $info descr]
        if {$dirdiff && ![dict get $info dir]} continue
        ttk::radiobutton $wt.rb$t -variable ::eskil($top,edit,pluginname) \
                -value $plugin -text $plugin
        ttk::label $wt.l$t -text $descr -anchor w
        grid $wt.rb$t $wt.l$t -sticky we -padx 3 -pady 3
        incr t
    }
    ttk::radiobutton $wt.rb$t -variable ::eskil($top,edit,pluginname) \
            -value "" -text "No Plugin"
    grid $wt.rb$t -sticky we -padx 3 -pady 3


    ttk::label $wt.li -text "Info" -anchor w
    addBalloon $wt.li "Info passed to plugin. Plugin specific."
    ttk::entry $wt.ei -textvariable ::eskil($top,edit,plugininfo)
    grid $wt.li $wt.ei -sticky we -padx 3 -pady 3

    ttk::checkbutton $wt.cb -text "Privilege" \
            -variable ::eskil($top,edit,pluginallow)
    addBalloon $wt.cb "Run plugin with raised privileges"
    grid $wt.cb - -sticky w -padx 3 -pady 3

    ttk::frame $wt.fb -padding 3
    ttk::button $wt.fb.b1 -text "Ok"   \
            -command [list EditPrefPluginsOk $top $wt]
    ttk::button $wt.fb.b2 -text "Show" \
            -command "ShowPlugin $wt \$::eskil($top,edit,pluginname)"
    addBalloon $wt.fb.b2 "Show plugin source code."
    ttk::button $wt.fb.b3 -text "Cancel" -command [list destroy $wt]
    set ::widgets($top,prefPluginsOk) $wt.fb.b1

    grid $wt.fb.b1 x $wt.fb.b2 x $wt.fb.b3 -sticky we
    grid columnconfigure $wt.fb {0 2 4} -uniform a
    grid columnconfigure $wt.fb {1 3} -weight 1

    grid $wt.fb - -sticky we
    grid columnconfigure $wt 1 -weight 1
}

proc EditPrefPluginsOk {top wt} {
    destroy $wt
    set ::eskil($top,pluginname) $::eskil($top,edit,pluginname)
    set ::eskil($top,plugininfo) $::eskil($top,edit,plugininfo)
    set ::eskil($top,pluginallow) $::eskil($top,edit,pluginallow)
    if {$::eskil($top,pluginname) ne ""} {
        set pinterp [createPluginInterp $::eskil($top,pluginname) \
                             $::eskil($top,plugininfo) \
                             $::eskil($top,pluginallow) pinfo]

proc ShowPlugin {parent plugin} {
    set src [LocatePlugin $plugin]
    if {$src eq ""} return
    set ch [open $src]
    set data [read $ch]
    close $ch
    set wt $parent.plugin
    if {[winfo exists $wt]} {
        wm deiconify $wt
    } else {
        toplevel $wt -padx 3 -pady 3
    }
    destroy {*}[winfo children $wt]
    ttk::frame $wt._bg
    place $wt._bg -x 0 -y 0 -relwidth 1.0 -relheight 1.0 -border outside
    wm title $wt "Plugin: $plugin"

    set t [Scroll both text $wt.t -width 80 -height 30 -font myfont -wrap none]
    pack $wt.t -fill both -expand 1
    bind $t <Control-a> "[list $t tag add sel 1.0 end];break"

    TextViewTcl $t $data
}