Fix memory and type management bugs.

[chiark-tcl.git] / base / hook.c

diff --git a/base/hook.c b/base/hook.c
index f364978c200db68dde9b2ba53c0a3e8faa898533..cdcb246d2c742b945ad8444faad1cd1705529b01 100644 (file)
--- a/base/hook.c
+++ b/base/hook.c
@@ -61,10 +61,10 @@ int do_hbytes_rep_info(ClientData cd, Tcl_Interp *ip,
 }
 
 static void hbytes_t_dup(Tcl_Obj *src, Tcl_Obj *dup) {
-  objfreeir(dup);
   hbytes_array(OBJ_HBYTES(dup),
               hbytes_data(OBJ_HBYTES(src)),
               hbytes_len(OBJ_HBYTES(src)));
+  dup->typePtr= &hbytes_type;
 }
 
 static void hbytes_t_free(Tcl_Obj *o) {
@@ -210,6 +210,18 @@ int do_hbytes_overwrite(ClientData cd, Tcl_Interp *ip,
   return TCL_OK;
 }
 
+int do_hbytes_trimleft(ClientData cd, Tcl_Interp *ip, HBytes_Var v) {
+  const Byte *o, *p, *e;
+  o= p= hbytes_data(v.hb);
+  e= p + hbytes_len(v.hb);
+
+  while (p<e && !*p) p++;
+  if (p != o)
+    hbytes_unprepend(v.hb, p-o);
+
+  return TCL_OK;
+}
+
 int do_hbytes_repeat(ClientData cd, Tcl_Interp *ip,
                     HBytes_Value sub, int count, HBytes_Value *result) {
   int sub_l;