Eskil

    # This detects .kit but how to detect starpacks?
    if {[file extension $file] eq ".kit"} {
        package require vfs::mk4
        vfs::mk4::Mount $file $file
        # Check for contents to ensure it is a kit
        if {[llength [glob -nocomplain $file/*]] == 0} {
            vfs::unmount $file
        }
    }
    return [file isdirectory $file]
}

# A wrapper for tk_getOpenFile
proc myOpenFile {args} {

  -nodiff     : Normally, if there are enough information on the
                command line to run diff, Eskil will do so unless
                this option is specified.
  -dir        : Start in directory diff mode. Ignores other args.
  -clip       : Start in clip diff mode. Ignores other args.
  -patch      : View patch file.
  -context <n>: Show only differences, with <n> lines of context.
  -foreach    : Open one diff window per file listed.

  -noparse    : Eskil can perform analysis of changed blocks to
  -line       : improve display. See online help for details.
  -smallblock : The default. Do block analysis on small blocks.
  -block      : Full block analysis. This can be slow if there
                are large change blocks.

        return
    }
    
    set allOpts {
        -w --help -help -b -noignore -i -nocase -nodigit -nokeyword -prefix
        -noparse -line -smallblock -block -char -word -limit -nodiff -dir
        -clip -patch -browse -conflict -print -server -o -r -context
        -foreach
    }

    # If the first option is "--query", use it to ask about options.
    if {$::eskil(argc) == 2 && [lindex $::eskil(argv) 0] == "--query"} {
        set arg [lindex $::eskil(argv) 1]
        if {[lsearch -exact $allOpts $arg] < 0} {
            set match [lsearch -glob -all -inline $allOpts $arg*]

    set autobrowse 0
    set dodir 0
    set doclip 0
    set files ""
    set nextArg ""
    set revNo 1
    set dopatch 0
    set foreach 0
    foreach arg $::eskil(argv) {
        if {$nextArg != ""} {
            if {$nextArg eq "mergeFile"} {
                set opts(mergeFile) [file join [pwd] $arg]
            } elseif {$nextArg eq "printFile"} {
                set opts(printFile) [file join [pwd] $arg]
            } elseif {$nextArg eq "revision"} {

            set dodir 1
        } elseif {$arg eq "-clip"} {
            set doclip 1
        } elseif {$arg eq "-patch"} {
            set dopatch 1
        } elseif {$arg eq "-browse"} {
            set autobrowse 1
         } elseif {$arg eq "-foreach"} {
            set foreach 1
       } elseif {$arg eq "-conflict"} {
            set opts(mode) "conflict"
        } elseif {$arg eq "-print"} {
            set nextArg printFile
        } elseif {$arg eq "-server"} {
            if {$::tcl_platform(platform) eq "windows"} {
                catch {
                    package require dde

        set ::diff($top,$item) $val
    }

    # It is preferable to see the end if the rev string is too long
    $::widgets($top,rev1) xview end
    $::widgets($top,rev2) xview end

    if {$len == 1 || $foreach} {
        set ReturnAfterLoop 0
        set first 1
        foreach file $files {
            if {$first} {
                set first 0
            } else {
                # Create new window for other files
                makeDiffWin
                update
                set top [lindex $::diff(diffWindows) end]
                # Copy the previously collected options
                foreach {item val} [array get opts] {
                    set ::diff($top,$item) $val
                }
                # It is preferable to see the end if the rev string is too long
                $::widgets($top,rev1) xview end
                $::widgets($top,rev2) xview end
            }
            set fullname [file join [pwd] $file]
            set fulldir [file dirname $fullname]
            if {$::diff($top,mode) eq "conflict"} {
                startConflictDiff $top $fullname
                after idle [list doDiff $top]
                set ReturnAfterLoop 1
                continue
            }
            if {!$autobrowse && !$dopatch} {
                # Check for revision control
                set rev [detectRevSystem $fullname]
                if {$rev ne ""} {
                    startRevMode $top $rev $fullname
                    if {$noautodiff} {
                        enableRedo $top
                    } else {
                        after idle [list doDiff $top]
                    }
                    set ReturnAfterLoop 1
                    continue
                }
            }
            # No revision control. Is it a patch file?
            set ::diff($top,leftDir) $fulldir
            set ::diff($top,leftFile) $fullname
            set ::diff($top,leftLabel) $fullname
            set ::diff($top,leftOK) 1
            if {$dopatch || [regexp {\.(diff|patch)$} $fullname]} {
                set ::diff($top,mode) "patch"
                set ::diff($top,patchFile) $fullname
                set autobrowse 0
                if {$noautodiff} {
                    enableRedo $top
                } else {
                    after idle [list doDiff $top]
                }
                set ReturnAfterLoop 1
                continue
            }
        }
        if {$ReturnAfterLoop} return
    } elseif {$len >= 2} {
        set fullname [file join [pwd] [lindex $files 0]]
        set fulldir [file dirname $fullname]
        set ::diff($top,leftDir) $fulldir
        set ::diff($top,leftFile) $fullname
        set ::diff($top,leftLabel) $fullname
        set ::diff($top,leftOK) 1