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bug : _make and special parameters

I downloaded qiv sources, went in the right directory, typed "make" and 

I got the error :  (eval):1: read-only variable: CURSOR

This is because in _make, Makefile lines are parsed to find for 
variables declarations, and then assigned with : 
eval $var=\$val

But in qiv Makefile, there is the line :
and CURSOR is a parameter special in zsh.

That problem could happen with any special parameters.

I found a solution by adding the line 
typeset -h $var 
just before eval

I don't known if there could be drawbacks with my fix, but I still send 


? _make.patch
Index: Completion/Unix/Command/_make
RCS file: /cvsroot/zsh/zsh/Completion/Unix/Command/_make,v
retrieving revision 1.17
diff -u -r1.17 _make
--- Completion/Unix/Command/_make	9 Feb 2006 14:51:32 -0000	1.17
+++ Completion/Unix/Command/_make	8 Nov 2006 19:31:11 -0000
@@ -60,6 +60,7 @@
 	    var=${input%%[ $TAB]#=*}
 	    val=${val##[ $TAB]#}
+       local -h $var
 	    eval $var=\$val
 	([[:alnum:]][[:alnum:]_]#[ $TAB]#:=*)
@@ -67,6 +68,7 @@
 	    val=${val##[ $TAB]#}
 	    val=$(expandVars 10 $val)
+       local -h $var
 	    eval $var=\$val

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