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diff --git a/tkhtml1/src/htmltest.c b/tkhtml1/src/htmltest.c
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+/*
+** This file contains the TestPoint routines used for profiling
+** and coverage analysis of the code.
+**
+** Copyright (C) 1997-2000 D. Richard Hipp
+**
+** This library is free software; you can redistribute it and/or
+** modify it under the terms of the GNU Library General Public
+** License as published by the Free Software Foundation; either
+** version 2 of the License, or (at your option) any later version.
+**
+** This library is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+** Library General Public License for more details.
+** 
+** You should have received a copy of the GNU Library General Public
+** License along with this library; if not, write to the
+** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+** Boston, MA  02111-1307, USA.
+**
+** Author contact information:
+**   drh@acm.org
+**   http://www.hwaci.com/drh/
+*/
+/*
+** A macro named "TestPoint" is defined which increments a counter
+** whenever it is encountered.  This is very efficient, and should
+** not impact performance of the system.  For delivery, the macro
+** can be nulled out by recompiling without the COVERAGE_TEST macro 
+** defined.
+**
+** See also the "renumber.c" program which can be used
+** to assign unique numbers to all of the TestPoint(0) macros.
+*/
+#include "tcl.h"
+#include "htmltest.h"
+
+#if INTERFACE
+
+#if defined(COVERAGE_TEST)
+# define TestPoint(X)      {extern int HtmlTPArray[]; HtmlTPArray[X]++;}
+# define UNTESTED          HtmlTPUntested(__FILE__,__LINE__)
+# define CANT_HAPPEN       HtmlTPCantHappen(__FILE__,__LINE__)
+# define HtmlVerifyLock(H) if((H)->locked==0)HtmlTPCantHappen(__FILE__,__LINE__)
+#else
+# define TestPoint(X)
+# define UNTESTED
+# define CANT_HAPPEN
+# define HtmlVerifyLock(H)
+#endif
+
+#endif /* INTERFACE */
+
+/*
+** The following global array keeps track of the number of visits to
+** each testpoint.  The size of the array must be set manually to the
+** be at least one greater than the largest TestPoint number.
+*/
+#if defined(COVERAGE_TEST)
+int HtmlTPArray[2000];
+#endif
+
+/* Needed by the EslTestPointDump routine
+*/
+#include <stdio.h>
+
+/*
+** Recursion depth
+*/
+#if defined(DEBUG)
+int HtmlDepth = 0;
+#endif
+#if INTERFACE
+#if defined(DEBUG)
+#define HtmlPush HtmlDepth+=2
+#define HtmlPop  HtmlDepth-=2
+#else
+#define HtmlPush
+#define HtmlPop
+#endif
+#endif
+
+/* This function is called to print the values of all elements of the
+** TP_Array to the given file.  Values are printed in decimal, one per line.
+*/
+void HtmlTestPointDump(const char *filename){
+#if defined(COVERAGE_TEST)
+  FILE *fp;
+
+  fp = fopen(filename,"a");
+  if( fp ){
+    int i;
+    for(i=0; i<sizeof(HtmlTPArray)/sizeof(HtmlTPArray[0]); i++){
+      if( HtmlTPArray[i]>0 ){
+        fprintf(fp,"%d %d\n",i,HtmlTPArray[i]);
+      }
+    }
+  }
+  fclose(fp);
+#endif
+}
+
+/* This function reports an error to stderr when code that is marked
+** UNTESTED gets executed.
+*/
+void HtmlTPUntested(const char *zFile, int line){
+#ifndef USE_TCL_STUBS
+  fprintf(stderr,"Untested HTML Widget code executed in file %s line %d\n",
+          zFile,line);
+#endif
+}
+
+/* This function reports an error to stderr when safety code that should
+** never execute is called.
+*/
+void HtmlTPCantHappen(const char *zFile, int line){
+#ifndef USE_TCL_STUBS
+  fprintf(stderr,"Unplanned behavior in the HTML Widget in file %s line %d\n",
+          zFile,line);
+#endif
+}