Eskil

# If n1/n2 are both 0, it means that this is the last lines to be displayed.
#  In that case line1/line2, if non-zero says the last line to display.
proc doText {top ch1 ch2 n1 n2 line1 line2} {
    global doingLine1 doingLine2 Pref

    if {$n1 == 0 && $n2 == 0} {
        # All blocks have been processed. Continue until end of file.
        # If "only diffs" is on, just display a couple of context lines.
        # If "show all" is not on, just display a couple of context lines.
        set limit -1
        if {$Pref(context) > 0} {
        if {$Pref(context) >= 0} {
            set limit $Pref(context)
        }
	# Consider any total limit on displayed lines.
        if {$::diff($top,limitlines)} {
            set limit [expr {$::diff($top,limitlines) - $::diff($top,mapMax)}]
            if {$limit < 0} {
                set limit 0

    if {$n1 == 0} {set tag2 new2} else {set tag2 change}
    if {$n2 == 0} {set tag1 new1} else {set tag1 change}

    # Display all equal lines before next diff
    # If only diff is on, only skip a section if the blank
    # line replaces at least 3 lines.
    set limit -1
    if {$Pref(context) > 0 && \
    if {$Pref(context) >= 0 && \
            ($line1 - $doingLine1 > (2 * $Pref(context) + 2))} {
        set limit $Pref(context)
    }
    if {$doingLine1 == 1} {
        set allowStartFill 0
    } else {
        set allowStartFill 1
    }
    set t 0
    while {$doingLine1 < $line1} {
        gets $ch1 apa
        gets $ch2 bepa
        if {$limit < 0 || ($t < $limit) || \
        if {$limit < 0 || ($t < $limit && $allowStartFill) || \
                ($line1 - $doingLine1) <= $limit} {
            insertLine $top 1 $doingLine1 $apa
            insertLine $top 2 $doingLine2 $bepa
            addMapLines $top 1
        } elseif {$t == $limit} {
            emptyLine $top 1 0
            emptyLine $top 2 0
            addMapLines $top 1
        } elseif {$t == $limit && $allowStartFill} {
            # If zero context is shown, skip the filler to keep display tight.
            if {$limit > 0} {
                emptyLine $top 1 0
                emptyLine $top 2 0
                addMapLines $top 1
            }
        }
        incr doingLine1
        incr doingLine2
        incr t
        if {$::diff($top,limitlines) && \
                ($::diff($top,mapMax) > $::diff($top,limitlines))} {
            return

    cleanupFiles $top
    if {$::diff($top,mode) eq "conflict"} {
        if {$::widgets($top,eqLabel) != "="} {
            makeMergeWin $top
        }
    }
    if {$::diff($top,printFile) != ""} {
    if {$::diff($top,printFile) ne ""} {
        if {$::diff($top,printMode) eq "PS"} {
            after idle "doPrint $top 1 ; cleanupAndExit all"
        } else {
            after idle "doPrint2 $top 1 ; cleanupAndExit all"
        }
    }
}

    $top.m.mo.p add radiobutton -label "Words" \
            -variable Pref(lineparsewords) -value "1"
    $top.m.mo.p add separator
    $top.m.mo.p add checkbutton -label "Mark last" -variable Pref(marklast)

    menu $top.m.mo.c
    $top.m.mo.c add radiobutton -label "Show all lines" \
            -variable ::Pref(context) -value -1
    $top.m.mo.c add radiobutton -label "Show only diffs" \
            -variable ::Pref(context) -value 0
    $top.m.mo.c add separator
    $top.m.mo.c add radiobutton -label "Context 2 lines" \
            -variable ::Pref(context) -value 2
    $top.m.mo.c add radiobutton -label "Context 5 lines" \
            -variable ::Pref(context) -value 5
    $top.m.mo.c add radiobutton -label "Context 10 lines" \

    $top.m.help add separator
    $top.m.help add command -label "About" -command makeAboutWin -underline 0

    ttk::label $top.lr1 -text "Rev 1"
    addBalloon $top.lr1 "Revision number for version diff."
    ttk::entryX $top.er1 -width 12 -textvariable diff($top,doptrev1)
    set ::widgets($top,rev1) $top.er1
    bind $top.er1 <Key-Return> [list redoDiff $top]

    ttk::label $top.lr2 -text "Rev 2"
    addBalloon $top.lr2 "Revision number for version diff."
    ttk::entryX $top.er2 -width 12 -textvariable diff($top,doptrev2)
    set ::widgets($top,rev2) $top.er2
    bind $top.er2 <Key-Return> [list redoDiff $top]

    ttk::button $top.bcm -text Commit -command [list revCommit $top] \
            -state disabled -underline 0
    set ::widgets($top,commit) $top.bcm
    ttk::button $top.blg -text Log -command [list revLog $top] \
        -state disabled -underline 0
    set ::widgets($top,log) $top.blg
    ttk::button $top.bfp -text "Prev Diff" \

    bind $top <Key-Next>  [list scrollText $top  1 pa]
    bind $top <Key-Escape> [list focus $top]
    if {$debug == 0} {
        bind $top <Key> "backDoor %A"
    }

    pack $top.bfn -in $top.f -side right -padx {3 6}
    pack $top.bfp $top.bcm $top.blg $top.er2 $top.lr2 $top.er1 $top.lr1 \
    pack $top.bfp $top.bcm $top.blg \
            $top.er2 $top.lr2 $top.er1 $top.lr1 \
            -in $top.f -side right -padx 3
    pack $top.bfn $top.bfp $top.bcm -ipadx 15

    if {$debug == 1} {
        $top.m add cascade -label "Debug" -menu $top.m.md -underline 0
        menu $top.m.md
        if {$tcl_platform(platform) eq "windows"} {

    set Pref(colorchange) red
    set Pref(colornew1) darkgreen
    set Pref(colornew2) blue
    set Pref(bgequal) ""
    set Pref(bgchange) \#ffe0e0
    set Pref(bgnew1) \#a0ffa0
    set Pref(bgnew2) \#e0e0ff
    set Pref(context) 0
    set Pref(context) -1
    set Pref(marklast) 1
    set Pref(linewidth) 80
    set Pref(lines) 60
    set Pref(editor) ""
    set Pref(regsub) {}
    set Pref(toolbar) 0
    set Pref(wideMap) 0 ;# Not settable in GUI yet

    if {$Pref(editor) ne ""} {
        set ::util(editor) $Pref(editor)
    }

    # If the user's file has this old option, translate it to the new
    if {$Pref(onlydiffs) == 0} {
        set Pref(context) 0
        set Pref(context) -1
    }
    unset Pref(onlydiffs)

    # Set up reactions to some Pref settings
    if {![info exists ::widgets(toolbars)]} {
        set ::widgets(toolbars) {}
    }