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diff --git a/src/interp/compress.boot b/src/interp/compress.boot
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--- a/src/interp/compress.boot
+++ /dev/null
@@ -1,70 +0,0 @@
--- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
--- All rights reserved.
--- Copyright (C) 2007-2010, Gabriel Dos Reis.
--- All rights reserved.
---
--- Redistribution and use in source and binary forms, with or without
--- modification, are permitted provided that the following conditions are
--- met:
---
--- - Redistributions of source code must retain the above copyright
--- notice, this list of conditions and the following disclaimer.
---
--- - Redistributions in binary form must reproduce the above copyright
--- notice, this list of conditions and the following disclaimer in
--- the documentation and/or other materials provided with the
--- distribution.
---
--- - Neither the name of The Numerical ALgorithms Group Ltd. nor the
--- names of its contributors may be used to endorse or promote products
--- derived from this software without specific prior written permission.
---
--- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
--- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
--- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
--- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
--- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
--- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
--- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
--- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
--- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
--- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
--- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
-import sys_-macros
-namespace BOOT
-
--- This one is not currently in general use, but can be applied
--- to various situations are required
-
-minimalise x ==
- $hash:local:=hashTable 'EQUAL
- min x where
- min x ==
- y:=HGET($hash,x)
- y => y
- cons? x =>
- x = '(QUOTE T) => '(QUOTE T)
- -- copes with a particular Lucid-ism, God knows why
- -- This circular way of doing things is an attempt to deal with Lucid
- -- Who may place quoted cells in read-only memory
- z:=min first x
- if not EQ(z,first x) then x.first := z
- z:=min rest x
- if not EQ(z,rest x) then x.rest := z
- HashCheck x
- REFVECP x =>
- for i in 0..MAXINDEX x repeat
- x.i:=min (x.i)
- HashCheck x
- string? x => HashCheck x
- x
- HashCheck x ==
- y:=HGET($hash,x)
- y => y
- HPUT($hash,x,x)
- x
- x
-
-