From 10dd9595a33e80ac7ab8ae5ff11b6b6ef3059b20 Mon Sep 17 00:00:00 2001
From: dgp <dgp@users.sourceforge.net>
Date: Fri, 16 Nov 2012 16:11:29 +0000
Subject: 3587651 Fix Tcl_ListMathFuncs() by turning it into a call to [info
 functions]

---
 generic/tclBasic.c | 49 ++++++++++++++++++-------------------------------
 1 file changed, 18 insertions(+), 31 deletions(-)

diff --git a/generic/tclBasic.c b/generic/tclBasic.c
index fa13b50..cfb5c43 100644
--- a/generic/tclBasic.c
+++ b/generic/tclBasic.c
@@ -3395,41 +3395,28 @@ Tcl_ListMathFuncs(
     Tcl_Interp *interp,
     const char *pattern)
 {
-    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
-    Namespace *nsPtr;
-    Namespace *dummy1NsPtr;
-    Namespace *dummy2NsPtr;
-    const char *dummyNamePtr;
-    Tcl_Obj *result = Tcl_NewObj();
-
-    TclGetNamespaceForQualName(interp, "::tcl::mathfunc",
-	    globalNsPtr, TCL_FIND_ONLY_NS | TCL_GLOBAL_ONLY,
-	    &nsPtr, &dummy1NsPtr, &dummy2NsPtr, &dummyNamePtr);
-    if (nsPtr == NULL) {
-	return result;
+    Tcl_Obj *script = Tcl_NewStringObj("::info functions ", -1);
+    Tcl_Obj *result;
+    Tcl_InterpState state;
+
+    if (pattern) {
+	Tcl_Obj *patternObj = Tcl_NewStringObj(pattern, -1);
+	Tcl_Obj *arg = Tcl_NewListObj(1, &patternObj);
+
+	Tcl_AppendObjToObj(script, arg);
+	Tcl_DecrRefCount(arg);	/* Should tear down patternObj too */
     }
 
-    if ((pattern != NULL) && TclMatchIsTrivial(pattern)) {
-	if (Tcl_FindHashEntry(&nsPtr->cmdTable, pattern) != NULL) {
-	    Tcl_ListObjAppendElement(NULL, result,
-		    Tcl_NewStringObj(pattern, -1));
-	}
+    state = Tcl_SaveInterpState(interp, TCL_OK);
+    Tcl_IncrRefCount(script);
+    if (TCL_OK == Tcl_EvalObjEx(interp, script, 0)) {
+	result = Tcl_DuplicateObj(Tcl_GetObjResult(interp));
     } else {
-	Tcl_HashSearch cmdHashSearch;
-	Tcl_HashEntry *cmdHashEntry =
-		Tcl_FirstHashEntry(&nsPtr->cmdTable,&cmdHashSearch);
-
-	for (; cmdHashEntry != NULL;
-		cmdHashEntry = Tcl_NextHashEntry(&cmdHashSearch)) {
-	    const char *cmdNamePtr =
-		    Tcl_GetHashKey(&nsPtr->cmdTable, cmdHashEntry);
-
-	    if (pattern == NULL || Tcl_StringMatch(cmdNamePtr, pattern)) {
-		Tcl_ListObjAppendElement(NULL, result,
-			Tcl_NewStringObj(cmdNamePtr, -1));
-	    }
-	}
+	result = Tcl_NewObj();
     }
+    Tcl_DecrRefCount(script);
+    Tcl_RestoreInterpState(interp, state);
+
     return result;
 }
 
-- 
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