Text based interface: $PreRead does not work as manual says.

*To*: mathgroup at smc.vnet.net*Subject*: [mg130716] Text based interface: $PreRead does not work as manual says.*From*: Alain Cochard <Alain.Cochard at unistra.fr>*Date*: Mon, 6 May 2013 02:26:13 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

Here is an excerpt of http://reference.wolfram.com/mathematica/ref/$PreRead.html Use as an alias for HoldForm: In[1]:= $PreRead = ReplaceAll[#, "hf" -> "HoldForm"] & Out[1]= #1 /. hf -> HoldForm & In[2]:= {hf[2 + 3], hf[2/3]} 2 Out[2]= {2+3, -]} 3 Using the text based interface, I try to reproduce the above: Mathematica 9.0 for Linux x86 (64-bit) Copyright 1988-2012 Wolfram Research, Inc. In[1]:= $PreRead = ReplaceAll[#, "hf" -> "HoldForm"] & Out[1]= #1 /. hf -> HoldForm & In[2]:= {hf[2 + 3], hf[2/3]} 2 Out[2]= {hf[5], hf[-]} 3 In[3]:= hf Out[3]= hf In[4]:=?hf Global`hf Other Mathematica version, other computer: Mathematica 8.0 for Linux x86 (32-bit) Copyright 1988-2011 Wolfram Research, Inc. In[1]:= $PreRead = ReplaceAll[#, "hf" -> "HoldForm"] & Out[1]= #1 /. hf -> HoldForm & In[2]:= {hf[2 + 3], hf[2/3]} 2 Out[2]= {hf[5], hf[-]} 3 In[3]:= hf Out[3]= HoldForm <<<< so here it understands a litte bit... And I get the same output as just above, with Mathematica 7.0 for Linux x86 (64-bit) Copyright 1988-2009 Wolfram Research, Inc. on yet another computer. However, it does work as expected when using the front end interface. Is this normal? I spent some time in the documentation and on the web for an alternative of $PreRead but did not find anything, apart from the obsolete "Alias" Mathematica function; I found a documentation here: http://reference.wolfram.com/legacy/v4-fr/OtherInformation/Alias_almark.html I tried the simple example which is provided, but it does not react as it should, neither with the text based nor the front end interfaces... Is there something I can do to restore the correct behavior of $PreRead, or use Alias, under the text based interface or is there an equivalent way for defining such aliases? Thanks in advance. AC -- EOST (Ã?cole et Observatoire des Sciences de la Terre) IPG (Institut de Physique du Globe) | alain.cochard at unistra.fr 5 rue RenÃ© Descartes [bureau 106] | Phone: +33 (0)3 68 85 50 44 F-67084 Strasbourg Cedex, France | Fax: +33 (0)3 68 85 01 25