[PATCH] Fix command executions w/ shadowing array parameter with ksharray set

[Takeshi Banse <takebi@xxxxxxxxx>]

Signed-off-by: Takeshi Banse <takebi@xxxxxxxxx>
---
I am not quite sure that this patch is in a good shape or not, but it fixes
this particular problem here.

It prints "A" without 'ksharrays', but does not print if 'ksharays' is set.
For example:

% zsh -f -c 'A=(a b c); A=A printenv A'
=> A

% zsh -f -c 'setopt ksharrays; A=(a b c); A=A printenv A'
=> ;# does not print 'A' in this case.

 Src/exec.c          |  2 ++
 Test/A06assign.ztst | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/Src/exec.c b/Src/exec.c
index 6a7dbb1..61bf7a4 100644
--- a/Src/exec.c
+++ b/Src/exec.c
@@ -2294,6 +2294,8 @@ addvars(Estate state, Wordcode pc, int addflags)
 		}
 		allexp = opts[ALLEXPORT];
 		opts[ALLEXPORT] = 1;
+		if (unset(KSHARRAYS))
+		    unsetparam(name);
 	    	pm = assignsparam(name, val, myflags);
 		opts[ALLEXPORT] = allexp;
 	    } else
diff --git a/Test/A06assign.ztst b/Test/A06assign.ztst
index 3c9ea08..057ab43 100644
--- a/Test/A06assign.ztst
+++ b/Test/A06assign.ztst
@@ -433,3 +433,21 @@
 >n=(tmpfile1 tmpfile2)
 >typeset x=tmpfile2
 >typeset -E f=4.000000000e+00
+
+ A=(first second)
+ A="${A[*]}" printenv A
+ print -l "${A[@]}"
+0:command execution with assignments shadowing array parameter
+>first second
+>first
+>second
+
+ setopt ksharrays
+ A=(first second)
+ A="${A[*]}" printenv A
+ print -l "${A[@]}"
+ unsetopt ksharrays
+0:command execution with assignments shadowing array parameter with ksharray
+>first second
+>first
+>second
-- 
2.1.4