CTAN sync 202004110309

1 files changed, 747 insertions, 0 deletions

diff --git a/systems/texlive/tlnet/tlpkg/tltcl/lib/tcl8.6/package.tcl b/systems/texlive/tlnet/tlpkg/tltcl/lib/tcl8.6/package.tcl
new file mode 100644
index 0000000000..44e3b28f83
--- /dev/null
+++ b/systems/texlive/tlnet/tlpkg/tltcl/lib/tcl8.6/package.tcl
@@ -0,0 +1,747 @@
+# package.tcl --
+#
+# utility procs formerly in init.tcl which can be loaded on demand
+# for package management.
+#
+# Copyright (c) 1991-1993 The Regents of the University of California.
+# Copyright (c) 1994-1998 Sun Microsystems, Inc.
+#
+# See the file "license.terms" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+#
+
+namespace eval tcl::Pkg {}
+
+# ::tcl::Pkg::CompareExtension --
+#
+# Used internally by pkg_mkIndex to compare the extension of a file to a given
+# extension. On Windows, it uses a case-insensitive comparison because the
+# file system can be file insensitive.
+#
+# Arguments:
+#  fileName	name of a file whose extension is compared
+#  ext		(optional) The extension to compare against; you must
+#		provide the starting dot.
+#		Defaults to [info sharedlibextension]
+#
+# Results:
+#  Returns 1 if the extension matches, 0 otherwise
+
+proc tcl::Pkg::CompareExtension {fileName {ext {}}} {
+    global tcl_platform
+    if {$ext eq ""} {set ext [info sharedlibextension]}
+    if {$tcl_platform(platform) eq "windows"} {
+        return [string equal -nocase [file extension $fileName] $ext]
+    } else {
+        # Some unices add trailing numbers after the .so, so
+        # we could have something like '.so.1.2'.
+        set root $fileName
+        while {1} {
+            set currExt [file extension $root]
+            if {$currExt eq $ext} {
+                return 1
+            }
+
+	    # The current extension does not match; if it is not a numeric
+	    # value, quit, as we are only looking to ignore version number
+	    # extensions.  Otherwise we might return 1 in this case:
+	    #		tcl::Pkg::CompareExtension foo.so.bar .so
+	    # which should not match.
+
+	    if {![string is integer -strict [string range $currExt 1 end]]} {
+		return 0
+	    }
+            set root [file rootname $root]
+	}
+    }
+}
+
+# pkg_mkIndex --
+# This procedure creates a package index in a given directory.  The package
+# index consists of a "pkgIndex.tcl" file whose contents are a Tcl script that
+# sets up package information with "package require" commands.  The commands
+# describe all of the packages defined by the files given as arguments.
+#
+# Arguments:
+# -direct		(optional) If this flag is present, the generated
+#			code in pkgMkIndex.tcl will cause the package to be
+#			loaded when "package require" is executed, rather
+#			than lazily when the first reference to an exported
+#			procedure in the package is made.
+# -verbose		(optional) Verbose output; the name of each file that
+#			was successfully rocessed is printed out. Additionally,
+#			if processing of a file failed a message is printed.
+# -load pat		(optional) Preload any packages whose names match
+#			the pattern.  Used to handle DLLs that depend on
+#			other packages during their Init procedure.
+# dir -			Name of the directory in which to create the index.
+# args -		Any number of additional arguments, each giving
+#			a glob pattern that matches the names of one or
+#			more shared libraries or Tcl script files in
+#			dir.
+
+proc pkg_mkIndex {args} {
+    set usage {"pkg_mkIndex ?-direct? ?-lazy? ?-load pattern? ?-verbose? ?--? dir ?pattern ...?"}
+
+    set argCount [llength $args]
+    if {$argCount < 1} {
+	return -code error "wrong # args: should be\n$usage"
+    }
+
+    set more ""
+    set direct 1
+    set doVerbose 0
+    set loadPat ""
+    for {set idx 0} {$idx < $argCount} {incr idx} {
+	set flag [lindex $args $idx]
+	switch -glob -- $flag {
+	    -- {
+		# done with the flags
+		incr idx
+		break
+	    }
+	    -verbose {
+		set doVerbose 1
+	    }
+	    -lazy {
+		set direct 0
+		append more " -lazy"
+	    }
+	    -direct {
+		append more " -direct"
+	    }
+	    -load {
+		incr idx
+		set loadPat [lindex $args $idx]
+		append more " -load $loadPat"
+	    }
+	    -* {
+		return -code error "unknown flag $flag: should be\n$usage"
+	    }
+	    default {
+		# done with the flags
+		break
+	    }
+	}
+    }
+
+    set dir [lindex $args $idx]
+    set patternList [lrange $args [expr {$idx + 1}] end]
+    if {![llength $patternList]} {
+	set patternList [list "*.tcl" "*[info sharedlibextension]"]
+    }
+
+    try {
+	set fileList [glob -directory $dir -tails -types {r f} -- \
+		{*}$patternList]
+    } on error {msg opt} {
+	return -options $opt $msg
+    }
+    foreach file $fileList {
+	# For each file, figure out what commands and packages it provides.
+	# To do this, create a child interpreter, load the file into the
+	# interpreter, and get a list of the new commands and packages that
+	# are defined.
+
+	if {$file eq "pkgIndex.tcl"} {
+	    continue
+	}
+
+	set c [interp create]
+
+	# Load into the child any packages currently loaded in the parent
+	# interpreter that match the -load pattern.
+
+	if {$loadPat ne ""} {
+	    if {$doVerbose} {
+		tclLog "currently loaded packages: '[info loaded]'"
+		tclLog "trying to load all packages matching $loadPat"
+	    }
+	    if {![llength [info loaded]]} {
+		tclLog "warning: no packages are currently loaded, nothing"
+		tclLog "can possibly match '$loadPat'"
+	    }
+	}
+	foreach pkg [info loaded] {
+	    if {![string match -nocase $loadPat [lindex $pkg 1]]} {
+		continue
+	    }
+	    if {$doVerbose} {
+		tclLog "package [lindex $pkg 1] matches '$loadPat'"
+	    }
+	    try {
+		load [lindex $pkg 0] [lindex $pkg 1] $c
+	    } on error err {
+		if {$doVerbose} {
+		    tclLog "warning: load [lindex $pkg 0]\
+			    [lindex $pkg 1]\nfailed with: $err"
+		}
+	    } on ok {} {
+		if {$doVerbose} {
+		    tclLog "loaded [lindex $pkg 0] [lindex $pkg 1]"
+		}
+	    }
+	    if {[lindex $pkg 1] eq "Tk"} {
+		# Withdraw . if Tk was loaded, to avoid showing a window.
+		$c eval [list wm withdraw .]
+	    }
+	}
+
+	$c eval {
+	    # Stub out the package command so packages can require other
+	    # packages.
+
+	    rename package __package_orig
+	    proc package {what args} {
+		switch -- $what {
+		    require {
+			return;		# Ignore transitive requires
+		    }
+		    default {
+			__package_orig $what {*}$args
+		    }
+		}
+	    }
+	    proc tclPkgUnknown args {}
+	    package unknown tclPkgUnknown
+
+	    # Stub out the unknown command so package can call into each other
+	    # during their initialilzation.
+
+	    proc unknown {args} {}
+
+	    # Stub out the auto_import mechanism
+
+	    proc auto_import {args} {}
+
+	    # reserve the ::tcl namespace for support procs and temporary
+	    # variables.  This might make it awkward to generate a
+	    # pkgIndex.tcl file for the ::tcl namespace.
+
+	    namespace eval ::tcl {
+		variable dir		;# Current directory being processed
+		variable file		;# Current file being processed
+		variable direct		;# -direct flag value
+		variable x		;# Loop variable
+		variable debug		;# For debugging
+		variable type		;# "load" or "source", for -direct
+		variable namespaces	;# Existing namespaces (e.g., ::tcl)
+		variable packages	;# Existing packages (e.g., Tcl)
+		variable origCmds	;# Existing commands
+		variable newCmds	;# Newly created commands
+		variable newPkgs {}	;# Newly created packages
+	    }
+	}
+
+	$c eval [list set ::tcl::dir $dir]
+	$c eval [list set ::tcl::file $file]
+	$c eval [list set ::tcl::direct $direct]
+
+	# Download needed procedures into the slave because we've just deleted
+	# the unknown procedure.  This doesn't handle procedures with default
+	# arguments.
+
+	foreach p {::tcl::Pkg::CompareExtension} {
+	    $c eval [list namespace eval [namespace qualifiers $p] {}]
+	    $c eval [list proc $p [info args $p] [info body $p]]
+	}
+
+	try {
+	    $c eval {
+		set ::tcl::debug "loading or sourcing"
+
+		# we need to track command defined by each package even in the
+		# -direct case, because they are needed internally by the
+		# "partial pkgIndex.tcl" step above.
+
+		proc ::tcl::GetAllNamespaces {{root ::}} {
+		    set list $root
+		    foreach ns [namespace children $root] {
+			lappend list {*}[::tcl::GetAllNamespaces $ns]
+		    }
+		    return $list
+		}
+
+		# init the list of existing namespaces, packages, commands
+
+		foreach ::tcl::x [::tcl::GetAllNamespaces] {
+		    set ::tcl::namespaces($::tcl::x) 1
+		}
+		foreach ::tcl::x [package names] {
+		    if {[package provide $::tcl::x] ne ""} {
+			set ::tcl::packages($::tcl::x) 1
+		    }
+		}
+		set ::tcl::origCmds [info commands]
+
+		# Try to load the file if it has the shared library extension,
+		# otherwise source it.  It's important not to try to load
+		# files that aren't shared libraries, because on some systems
+		# (like SunOS) the loader will abort the whole application
+		# when it gets an error.
+
+		if {[::tcl::Pkg::CompareExtension $::tcl::file [info sharedlibextension]]} {
+		    # The "file join ." command below is necessary.  Without
+		    # it, if the file name has no \'s and we're on UNIX, the
+		    # load command will invoke the LD_LIBRARY_PATH search
+		    # mechanism, which could cause the wrong file to be used.
+
+		    set ::tcl::debug loading
+		    load [file join $::tcl::dir $::tcl::file]
+		    set ::tcl::type load
+		} else {
+		    set ::tcl::debug sourcing
+		    source [file join $::tcl::dir $::tcl::file]
+		    set ::tcl::type source
+		}
+
+		# As a performance optimization, if we are creating direct
+		# load packages, don't bother figuring out the set of commands
+		# created by the new packages.  We only need that list for
+		# setting up the autoloading used in the non-direct case.
+		if {!$::tcl::direct} {
+		    # See what new namespaces appeared, and import commands
+		    # from them.  Only exported commands go into the index.
+
+		    foreach ::tcl::x [::tcl::GetAllNamespaces] {
+			if {![info exists ::tcl::namespaces($::tcl::x)]} {
+			    namespace import -force ${::tcl::x}::*
+			}
+
+			# Figure out what commands appeared
+
+			foreach ::tcl::x [info commands] {
+			    set ::tcl::newCmds($::tcl::x) 1
+			}
+			foreach ::tcl::x $::tcl::origCmds {
+			    unset -nocomplain ::tcl::newCmds($::tcl::x)
+			}
+			foreach ::tcl::x [array names ::tcl::newCmds] {
+			    # determine which namespace a command comes from
+
+			    set ::tcl::abs [namespace origin $::tcl::x]
+
+			    # special case so that global names have no
+			    # leading ::, this is required by the unknown
+			    # command
+
+			    set ::tcl::abs \
+				    [lindex [auto_qualify $::tcl::abs ::] 0]
+
+			    if {$::tcl::x ne $::tcl::abs} {
+				# Name changed during qualification
+
+				set ::tcl::newCmds($::tcl::abs) 1
+				unset ::tcl::newCmds($::tcl::x)
+			    }
+			}
+		    }
+		}
+
+		# Look through the packages that appeared, and if there is a
+		# version provided, then record it
+
+		foreach ::tcl::x [package names] {
+		    if {[package provide $::tcl::x] ne ""
+			    && ![info exists ::tcl::packages($::tcl::x)]} {
+			lappend ::tcl::newPkgs \
+			    [list $::tcl::x [package provide $::tcl::x]]
+		    }
+		}
+	    }
+	} on error msg {
+	    set what [$c eval set ::tcl::debug]
+	    if {$doVerbose} {
+		tclLog "warning: error while $what $file: $msg"
+	    }
+	} on ok {} {
+	    set what [$c eval set ::tcl::debug]
+	    if {$doVerbose} {
+		tclLog "successful $what of $file"
+	    }
+	    set type [$c eval set ::tcl::type]
+	    set cmds [lsort [$c eval array names ::tcl::newCmds]]
+	    set pkgs [$c eval set ::tcl::newPkgs]
+	    if {$doVerbose} {
+		if {!$direct} {
+		    tclLog "commands provided were $cmds"
+		}
+		tclLog "packages provided were $pkgs"
+	    }
+	    if {[llength $pkgs] > 1} {
+		tclLog "warning: \"$file\" provides more than one package ($pkgs)"
+	    }
+	    foreach pkg $pkgs {
+		# cmds is empty/not used in the direct case
+		lappend files($pkg) [list $file $type $cmds]
+	    }
+
+	    if {$doVerbose} {
+		tclLog "processed $file"
+	    }
+	}
+	interp delete $c
+    }
+
+    append index "# Tcl package index file, version 1.1\n"
+    append index "# This file is generated by the \"pkg_mkIndex$more\" command\n"
+    append index "# and sourced either when an application starts up or\n"
+    append index "# by a \"package unknown\" script.  It invokes the\n"
+    append index "# \"package ifneeded\" command to set up package-related\n"
+    append index "# information so that packages will be loaded automatically\n"
+    append index "# in response to \"package require\" commands.  When this\n"
+    append index "# script is sourced, the variable \$dir must contain the\n"
+    append index "# full path name of this file's directory.\n"
+
+    foreach pkg [lsort [array names files]] {
+	set cmd {}
+	lassign $pkg name version
+	lappend cmd ::tcl::Pkg::Create -name $name -version $version
+	foreach spec [lsort -index 0 $files($pkg)] {
+	    foreach {file type procs} $spec {
+		if {$direct} {
+		    set procs {}
+		}
+		lappend cmd "-$type" [list $file $procs]
+	    }
+	}
+	append index "\n[eval $cmd]"
+    }
+
+    set f [open [file join $dir pkgIndex.tcl] w]
+    puts $f $index
+    close $f
+}
+
+# tclPkgSetup --
+# This is a utility procedure use by pkgIndex.tcl files.  It is invoked as
+# part of a "package ifneeded" script.  It calls "package provide" to indicate
+# that a package is available, then sets entries in the auto_index array so
+# that the package's files will be auto-loaded when the commands are used.
+#
+# Arguments:
+# dir -			Directory containing all the files for this package.
+# pkg -			Name of the package (no version number).
+# version -		Version number for the package, such as 2.1.3.
+# files -		List of files that constitute the package.  Each
+#			element is a sub-list with three elements.  The first
+#			is the name of a file relative to $dir, the second is
+#			"load" or "source", indicating whether the file is a
+#			loadable binary or a script to source, and the third
+#			is a list of commands defined by this file.
+
+proc tclPkgSetup {dir pkg version files} {
+    global auto_index
+
+    package provide $pkg $version
+    foreach fileInfo $files {
+	set f [lindex $fileInfo 0]
+	set type [lindex $fileInfo 1]
+	foreach cmd [lindex $fileInfo 2] {
+	    if {$type eq "load"} {
+		set auto_index($cmd) [list load [file join $dir $f] $pkg]
+	    } else {
+		set auto_index($cmd) [list source [file join $dir $f]]
+	    }
+	}
+    }
+}
+
+# tclPkgUnknown --
+# This procedure provides the default for the "package unknown" function.  It
+# is invoked when a package that's needed can't be found.  It scans the
+# auto_path directories and their immediate children looking for pkgIndex.tcl
+# files and sources any such files that are found to setup the package
+# database. As it searches, it will recognize changes to the auto_path and
+# scan any new directories.
+#
+# Arguments:
+# name -		Name of desired package.  Not used.
+# version -		Version of desired package.  Not used.
+# exact -		Either "-exact" or omitted.  Not used.
+
+proc tclPkgUnknown {name args} {
+    global auto_path env
+
+    if {![info exists auto_path]} {
+	return
+    }
+    # Cache the auto_path, because it may change while we run through the
+    # first set of pkgIndex.tcl files
+    set old_path [set use_path $auto_path]
+    while {[llength $use_path]} {
+	set dir [lindex $use_path end]
+
+	# Make sure we only scan each directory one time.
+	if {[info exists tclSeenPath($dir)]} {
+	    set use_path [lrange $use_path 0 end-1]
+	    continue
+	}
+	set tclSeenPath($dir) 1
+
+	# we can't use glob in safe interps, so enclose the following in a
+	# catch statement, where we get the pkgIndex files out of the
+	# subdirectories
+	catch {
+	    foreach file [glob -directory $dir -join -nocomplain \
+		    * pkgIndex.tcl] {
+		set dir [file dirname $file]
+		if {![info exists procdDirs($dir)]} {
+		    try {
+			source $file
+		    } trap {POSIX EACCES} {} {
+			# $file was not readable; silently ignore
+			continue
+		    } on error msg {
+			tclLog "error reading package index file $file: $msg"
+		    } on ok {} {
+			set procdDirs($dir) 1
+		    }
+		}
+	    }
+	}
+	set dir [lindex $use_path end]
+	if {![info exists procdDirs($dir)]} {
+	    set file [file join $dir pkgIndex.tcl]
+	    # safe interps usually don't have "file exists",
+	    if {([interp issafe] || [file exists $file])} {
+		try {
+		    source $file
+		} trap {POSIX EACCES} {} {
+		    # $file was not readable; silently ignore
+		    continue
+		} on error msg {
+		    tclLog "error reading package index file $file: $msg"
+		} on ok {} {
+		    set procdDirs($dir) 1
+		}
+	    }
+	}
+
+	set use_path [lrange $use_path 0 end-1]
+
+	# Check whether any of the index scripts we [source]d above set a new
+	# value for $::auto_path.  If so, then find any new directories on the
+	# $::auto_path, and lappend them to the $use_path we are working from.
+	# This gives index scripts the (arguably unwise) power to expand the
+	# index script search path while the search is in progress.
+	set index 0
+	if {[llength $old_path] == [llength $auto_path]} {
+	    foreach dir $auto_path old $old_path {
+		if {$dir ne $old} {
+		    # This entry in $::auto_path has changed.
+		    break
+		}
+		incr index
+	    }
+	}
+
+	# $index now points to the first element of $auto_path that has
+	# changed, or the beginning if $auto_path has changed length Scan the
+	# new elements of $auto_path for directories to add to $use_path.
+	# Don't add directories we've already seen, or ones already on the
+	# $use_path.
+	foreach dir [lrange $auto_path $index end] {
+	    if {![info exists tclSeenPath($dir)] && ($dir ni $use_path)} {
+		lappend use_path $dir
+	    }
+	}
+	set old_path $auto_path
+    }
+}
+
+# tcl::MacOSXPkgUnknown --
+# This procedure extends the "package unknown" function for MacOSX.  It scans
+# the Resources/Scripts directories of the immediate children of the auto_path
+# directories for pkgIndex files.
+#
+# Arguments:
+# original -		original [package unknown] procedure
+# name -		Name of desired package.  Not used.
+# version -		Version of desired package.  Not used.
+# exact -		Either "-exact" or omitted.  Not used.
+
+proc tcl::MacOSXPkgUnknown {original name args} {
+    #  First do the cross-platform default search
+    uplevel 1 $original [linsert $args 0 $name]
+
+    # Now do MacOSX specific searching
+    global auto_path
+
+    if {![info exists auto_path]} {
+	return
+    }
+    # Cache the auto_path, because it may change while we run through the
+    # first set of pkgIndex.tcl files
+    set old_path [set use_path $auto_path]
+    while {[llength $use_path]} {
+	set dir [lindex $use_path end]
+
+	# Make sure we only scan each directory one time.
+	if {[info exists tclSeenPath($dir)]} {
+	    set use_path [lrange $use_path 0 end-1]
+	    continue
+	}
+	set tclSeenPath($dir) 1
+
+	# get the pkgIndex files out of the subdirectories
+	foreach file [glob -directory $dir -join -nocomplain \
+		* Resources Scripts pkgIndex.tcl] {
+	    set dir [file dirname $file]
+	    if {![info exists procdDirs($dir)]} {
+		try {
+		    source $file
+		} trap {POSIX EACCES} {} {
+		    # $file was not readable; silently ignore
+		    continue
+		} on error msg {
+		    tclLog "error reading package index file $file: $msg"
+		} on ok {} {
+		    set procdDirs($dir) 1
+		}
+	    }
+	}
+	set use_path [lrange $use_path 0 end-1]
+
+	# Check whether any of the index scripts we [source]d above set a new
+	# value for $::auto_path.  If so, then find any new directories on the
+	# $::auto_path, and lappend them to the $use_path we are working from.
+	# This gives index scripts the (arguably unwise) power to expand the
+	# index script search path while the search is in progress.
+	set index 0
+	if {[llength $old_path] == [llength $auto_path]} {
+	    foreach dir $auto_path old $old_path {
+		if {$dir ne $old} {
+		    # This entry in $::auto_path has changed.
+		    break
+		}
+		incr index
+	    }
+	}
+
+	# $index now points to the first element of $auto_path that has
+	# changed, or the beginning if $auto_path has changed length Scan the
+	# new elements of $auto_path for directories to add to $use_path.
+	# Don't add directories we've already seen, or ones already on the
+	# $use_path.
+	foreach dir [lrange $auto_path $index end] {
+	    if {![info exists tclSeenPath($dir)] && ($dir ni $use_path)} {
+		lappend use_path $dir
+	    }
+	}
+	set old_path $auto_path
+    }
+}
+
+# ::tcl::Pkg::Create --
+#
+#	Given a package specification generate a "package ifneeded" statement
+#	for the package, suitable for inclusion in a pkgIndex.tcl file.
+#
+# Arguments:
+#	args		arguments used by the Create function:
+#			-name		packageName
+#			-version	packageVersion
+#			-load		{filename ?{procs}?}
+#			...
+#			-source		{filename ?{procs}?}
+#			...
+#
+#			Any number of -load and -source parameters may be
+#			specified, so long as there is at least one -load or
+#			-source parameter.  If the procs component of a module
+#			specifier is left off, that module will be set up for
+#			direct loading; otherwise, it will be set up for lazy
+#			loading.  If both -source and -load are specified, the
+#			-load'ed files will be loaded first, followed by the
+#			-source'd files.
+#
+# Results:
+#	An appropriate "package ifneeded" statement for the package.
+
+proc ::tcl::Pkg::Create {args} {
+    append err(usage) "[lindex [info level 0] 0] "
+    append err(usage) "-name packageName -version packageVersion"
+    append err(usage) "?-load {filename ?{procs}?}? ... "
+    append err(usage) "?-source {filename ?{procs}?}? ..."
+
+    set err(wrongNumArgs) "wrong # args: should be \"$err(usage)\""
+    set err(valueMissing) "value for \"%s\" missing: should be \"$err(usage)\""
+    set err(unknownOpt)   "unknown option \"%s\": should be \"$err(usage)\""
+    set err(noLoadOrSource) "at least one of -load and -source must be given"
+
+    # process arguments
+    set len [llength $args]
+    if {$len < 6} {
+	error $err(wrongNumArgs)
+    }
+
+    # Initialize parameters
+    array set opts {-name {} -version {} -source {} -load {}}
+
+    # process parameters
+    for {set i 0} {$i < $len} {incr i} {
+	set flag [lindex $args $i]
+	incr i
+	switch -glob -- $flag {
+	    "-name"		-
+	    "-version"		{
+		if {$i >= $len} {
+		    error [format $err(valueMissing) $flag]
+		}
+		set opts($flag) [lindex $args $i]
+	    }
+	    "-source"		-
+	    "-load"		{
+		if {$i >= $len} {
+		    error [format $err(valueMissing) $flag]
+		}
+		lappend opts($flag) [lindex $args $i]
+	    }
+	    default {
+		error [format $err(unknownOpt) [lindex $args $i]]
+	    }
+	}
+    }
+
+    # Validate the parameters
+    if {![llength $opts(-name)]} {
+	error [format $err(valueMissing) "-name"]
+    }
+    if {![llength $opts(-version)]} {
+	error [format $err(valueMissing) "-version"]
+    }
+
+    if {!([llength $opts(-source)] || [llength $opts(-load)])} {
+	error $err(noLoadOrSource)
+    }
+
+    # OK, now everything is good.  Generate the package ifneeded statment.
+    set cmdline "package ifneeded $opts(-name) $opts(-version) "
+
+    set cmdList {}
+    set lazyFileList {}
+
+    # Handle -load and -source specs
+    foreach key {load source} {
+	foreach filespec $opts(-$key) {
+	    lassign $filespec filename proclist
+
+	    if { [llength $proclist] == 0 } {
+		set cmd "\[list $key \[file join \$dir [list $filename]\]\]"
+		lappend cmdList $cmd
+	    } else {
+		lappend lazyFileList [list $filename $key $proclist]
+	    }
+	}
+    }
+
+    if {[llength $lazyFileList]} {
+	lappend cmdList "\[list tclPkgSetup \$dir $opts(-name)\
+		$opts(-version) [list $lazyFileList]\]"
+    }
+    append cmdline [join $cmdList "\\n"]
+    return $cmdline
+}
+
+interp alias {} ::pkg::create {} ::tcl::Pkg::Create