Eskil

        puts "Plugin \"$plugin\" : $descr"
    }
}

proc preparePlugin {top} {
    #FIXA: plugin miffo
    disallowEdit $top
    $::diff($top,plugin) eval [list array set ::Pref [array get ::Pref]]
    $::eskil($top,plugin) eval [list array set ::Pref [array get ::Pref]]
    set out1 [tmpFile]
    set out2 [tmpFile]

    set chi [open $::diff($top,leftFile) r]
    set chi [open $::eskil($top,leftFile) r]
    set cho [open $out1 w]
    interp share {} $chi $::diff($top,plugin)
    interp share {} $cho $::diff($top,plugin)
    set usenew1 [$::diff($top,plugin) eval [list PreProcess left $chi $cho]]
    $::diff($top,plugin) invokehidden close $chi
    $::diff($top,plugin) invokehidden close $cho
    interp share {} $chi $::eskil($top,plugin)
    interp share {} $cho $::eskil($top,plugin)
    set usenew1 [$::eskil($top,plugin) eval [list PreProcess left $chi $cho]]
    $::eskil($top,plugin) invokehidden close $chi
    $::eskil($top,plugin) invokehidden close $cho
    close $chi
    close $cho

    set chi [open $::diff($top,rightFile) r]
    set chi [open $::eskil($top,rightFile) r]
    set cho [open $out2 w]
    interp share {} $chi $::diff($top,plugin)
    interp share {} $cho $::diff($top,plugin)
    set usenew2 [$::diff($top,plugin) eval [list PreProcess right $chi $cho]]
    $::diff($top,plugin) invokehidden close $chi
    $::diff($top,plugin) invokehidden close $cho
    interp share {} $chi $::eskil($top,plugin)
    interp share {} $cho $::eskil($top,plugin)
    set usenew2 [$::eskil($top,plugin) eval [list PreProcess right $chi $cho]]
    $::eskil($top,plugin) invokehidden close $chi
    $::eskil($top,plugin) invokehidden close $cho
    close $chi
    close $cho

    if {$usenew1} {
        # The file after processing should be used both
        # for comparison and for displaying.
        set ::diff($top,leftFileBak) $::diff($top,leftFile)
        set ::diff($top,leftFile) $out1
        set ::eskil($top,leftFileBak) $::eskil($top,leftFile)
        set ::eskil($top,leftFile) $out1
    } else {
        set ::diff($top,leftFileDiff) $out1
        #set ::diff($top,leftLabel) "$::diff($top,RevFile) $tag"
        set ::eskil($top,leftFileDiff) $out1
        #set ::eskil($top,leftLabel) "$::eskil($top,RevFile) $tag"
    }
    if {$usenew2} {
        set ::diff($top,rightFileBak) $::diff($top,rightFile)
        set ::diff($top,rightFile) $out2
        set ::eskil($top,rightFileBak) $::eskil($top,rightFile)
        set ::eskil($top,rightFile) $out2
    } else {
        set ::diff($top,rightFileDiff) $out2
        #set ::diff($top,rightLabel) $::diff($top,RevFile)
        set ::eskil($top,rightFileDiff) $out2
        #set ::eskil($top,rightLabel) $::eskil($top,RevFile)
    }
}

proc cleanupPlugin {top} {
    if {[info exists ::diff($top,leftFileBak)]} {
        set ::diff($top,leftFile) $::diff($top,leftFileBak)
    if {[info exists ::eskil($top,leftFileBak)]} {
        set ::eskil($top,leftFile) $::eskil($top,leftFileBak)
    }
    if {[info exists ::diff($top,rightFileBak)]} {
        set ::diff($top,rightFile) $::diff($top,rightFileBak)
    if {[info exists ::eskil($top,rightFileBak)]} {
        set ::eskil($top,rightFile) $::eskil($top,rightFileBak)
    }
    unset -nocomplain \
            ::diff($top,leftFileBak) ::diff($top,rightFileBak) \
            ::diff($top,leftFileDiff) ::diff($top,rightFileDiff)
            ::eskil($top,leftFileBak) ::eskil($top,rightFileBak) \
            ::eskil($top,leftFileDiff) ::eskil($top,rightFileDiff)
}

# GUI for plugin selection
proc EditPrefPlugins {top} {
    set w $top.prefplugin

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

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

    ttk::label $w.li -text "Info" -anchor "w"
    ttk::entry $w.ei -textvariable ::diff($top,edit,plugininfo)
    ttk::entry $w.ei -textvariable ::eskil($top,edit,plugininfo)
    grid $w.li $w.ei -sticky we -padx 3 -pady 3

    ttk::frame $w.fb -padding 3
    ttk::button $w.fb.b1 -text "Ok"     -command [list EditPrefPluginsOk $top $w]
    ttk::button $w.fb.b2 -text "Cancel" -command [list destroy $w]
    set ::widgets($top,prefPluginsOk) $w.fb.b1

    grid $w.fb.b1 x $w.fb.b2 -sticky we
    grid columnconfigure $w.fb {0 2} -uniform a
    grid columnconfigure $w.fb 1 -weight 1

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

proc EditPrefPluginsOk {top w} {
    destroy $w
    set ::diff($top,pluginname) $::diff($top,edit,pluginname) 
    set ::diff($top,plugininfo) $::diff($top,edit,plugininfo)
    if {$::diff($top,pluginname) ne ""} {
        set pinterp [createPluginInterp $::diff($top,pluginname) $::diff($top,plugininfo)]
    set ::eskil($top,pluginname) $::eskil($top,edit,pluginname) 
    set ::eskil($top,plugininfo) $::eskil($top,edit,plugininfo)
    if {$::eskil($top,pluginname) ne ""} {
        set pinterp [createPluginInterp $::eskil($top,pluginname) $::eskil($top,plugininfo)]
    } else {
        set pinterp ""
    }
    set ::diff($top,plugin) $pinterp
    set ::eskil($top,plugin) $pinterp
}