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-rw-r--r--ChangeLog6
-rw-r--r--Doc/Zsh/builtins.yo4
-rw-r--r--Src/builtin.c15
-rw-r--r--Test/B02typeset.ztst9
4 files changed, 31 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index 424c6c83c..41172b1c1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2012-08-16  Peter Stephenson  <pws@csr.com>
 
+	* 30619: Doc/Zsh/builtins.yo, Src/builtin.c,
+	Test/B02typeset.ztst: repeat "typeset -T" with same two first
+	arguments is not an error.
+
 	* 30617: Src/prototypes.h, Src/zsh_system.h: rationalise
 	replacement of tgoto() prototype which could appear twice
 	inconsistently.
@@ -57,5 +61,5 @@
 
 *****************************************************
 * This is used by the shell to define $ZSH_PATCHLEVEL
-* $Revision: 1.5695 $
+* $Revision: 1.5696 $
 *****************************************************
diff --git a/Doc/Zsh/builtins.yo b/Doc/Zsh/builtins.yo
index 98c470a54..5c133a856 100644
--- a/Doc/Zsh/builtins.yo
+++ b/Doc/Zsh/builtins.yo
@@ -1552,7 +1552,9 @@ an array to var(SCALAR) is an error, and assigning a scalar to var(array)
 sets it to be a single-element array.  Note that both `tt(typeset -xT ...)'
 and `tt(export -T ...)' work, but only the scalar will be marked for
 export.  Setting the value using the scalar version causes a split on all
-separators (which cannot be quoted).
+separators (which cannot be quoted).  It is possible to use the
+same two tied variables with a different separator character in which
+case the variables remain joined as before but the separator is changed.
 
 The tt(-g) (global) flag is treated specially: it means that any
 resulting parameter will not be restricted to local scope.  Note that this
diff --git a/Src/builtin.c b/Src/builtin.c
index b5a98cbd2..ce7d6a563 100644
--- a/Src/builtin.c
+++ b/Src/builtin.c
@@ -2449,7 +2449,20 @@ bin_typeset(char *name, char **argv, Options ops, int func)
 	    && (locallevel == pm->level || !(on & PM_LOCAL))) {
 	    if (pm->node.flags & PM_TIED) {
 		unqueue_signals();
-		zerrnam(name, "can't tie already tied scalar: %s", asg0.name);
+		if (!strcmp(asg->name, pm->ename)) {
+		    /*
+		     * Already tied in the fashion requested.
+		     */
+		    struct tieddata *tdp = (struct tieddata*)pm->u.data;
+		    /* Update join character */
+		    tdp->joinchar = joinchar;
+		    if (asg0.value)
+			setsparam(asg0.name, ztrdup(asg0.value));
+		    return 0;
+		} else {
+		    zerrnam(name, "can't tie already tied scalar: %s",
+			    asg0.name);
+		}
 		return 1;
 	    }
 	    if (!asg0.value && !(PM_TYPE(pm->node.flags) & (PM_ARRAY|PM_HASHED)))
diff --git a/Test/B02typeset.ztst b/Test/B02typeset.ztst
index 7a9928abe..51ebc6535 100644
--- a/Test/B02typeset.ztst
+++ b/Test/B02typeset.ztst
@@ -459,3 +459,12 @@
  silent2(){ local silence; silent1; }
  silent2
 0:typeset -g should be silent even without TYPESET_SILENT
+
+ typeset -T TIED_SCALAR tied_array
+ TIED_SCALAR=foo:bar
+ print $tied_array
+ typeset -T TIED_SCALAR=goo:car tied_array
+ print $tied_array
+0:retying arrays to same array works
+>foo bar
+>goo car