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From: Marius Vollmer <mvo@zagadka.ping.de>
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Subject: Re: snarfer guard macro name decision: SCM_MAGIC_SNARFER
Date: 14 Mar 2002 19:48:55 +0100
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Thien-Thi Nguyen <ttn@giblet.glug.org> writes:

> old_school_snarf ()
> {
> sed -e 's/SCM_CONST_LONG/SCM_GLOBAL_VCELL_INIT/g' \
>     -e 's/SCM_GLOBAL_VCELL_INIT/SCM_GLOBAL_VARIABLE_INIT/g' \
>     -e 's/SCM_GLOBAL_VCELL/SCM_GLOBAL_VARIABLE/g' \
>     -e 's/SCM_VCELL_INIT/SCM_VARIABLE_INIT/g' \
>     -e 's/SCM_VCELL/SCM_VARIABLE/g' \
>     $1 > ${temp}
> cp ${temp} $1
> modern_snarf "$@"
> }

Don't do this.  First, SCM_VCELL and SCM_VARIABLE are not the same
thing.  You can't substitute one for the other.  (Likewise for the
substitutions.)  Second, we already keep proper backward compatibility
in the C code itself:

    #if (SCM_DEBUG_DEPRECATED == 0)

    #define SCM_CONST_LONG(c_name, scheme_name,value) \
    SCM_VCELL_INIT(c_name, scheme_name, scm_long2num(value))

etc...

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