Don't apply %ignore to parameters

Fix regression introduced by 3f5c17824c5f20023bac58f7ebfc8de8532d6881
which resulted in using "$ignore" instead of the real parameter name in
Python if an %ignore/%rename($ignore) for the parameter name was used
(as could happen not necessarily intentionally when using wild card
ignores with regex matches) by explicitly checking if we're dealing with
a parameter node in apply_rename(), used by Swig_name_make(), and not
renaming it to "$ignore" in this case.

Extend the test suite to check for this case.

Closes #1460.

1 files changed, 8 insertions, 5 deletions

diff --git a/Source/Swig/naming.c b/Source/Swig/naming.c
index 180e54774..136df1987 100644
--- a/Source/Swig/naming.c
+++ b/Source/Swig/naming.c
@@ -1377,12 +1377,15 @@ void Swig_name_rename_add(String *prefix, String *name, SwigType *decl, Hash *ne
 }
 
 
-/* Create a name applying rename/namewarn if needed */
-static String *apply_rename(String *newname, int fullname, String *prefix, String *name) {
+/* Create a name for the given node applying rename/namewarn if needed */
+static String *apply_rename(Node* n, String *newname, int fullname, String *prefix, String *name) {
   String *result = 0;
   if (newname && Len(newname)) {
     if (Strcmp(newname, "$ignore") == 0) {
-      result = Copy(newname);
+      /* $ignore doesn't apply to parameters and while it's rare to explicitly write %ignore directives for them they could be caught by a wildcard ignore using
+         regex match, just ignore the attempt to ignore them in this case */
+      if (!Equal(nodeType(n), "parm"))
+	result = Copy(newname);
     } else {
       char *cnewname = Char(newname);
       if (cnewname) {
@@ -1480,7 +1483,7 @@ String *Swig_name_make(Node *n, String *prefix, const_String_or_char_ptr cname,
     if (rn) {
       String *newname = Getattr(rn, "name");
       int fullname = GetFlag(rn, "fullname");
-      result = apply_rename(newname, fullname, prefix, name);
+      result = apply_rename(n, newname, fullname, prefix, name);
     }
     if (result && !Equal(result, name)) {
       /* operators in C++ allow aliases, we look for them */
@@ -1504,7 +1507,7 @@ String *Swig_name_make(Node *n, String *prefix, const_String_or_char_ptr cname,
 	int fullname = GetFlag(wrn, "fullname");
 	if (result)
 	  Delete(result);
-	result = apply_rename(rename, fullname, prefix, name);
+	result = apply_rename(n, rename, fullname, prefix, name);
 	if ((msg) && (Len(msg))) {
 	  if (!Getmeta(nname, "already_warned")) {
 	    if (n) {