Removed the log-errors option from the code, by treating it as if it was always true. This was done for the action item of o Remove Nmap's --log-errors feature and make its behavior the default. I also updated the docs/refguide.xml to reflect this change. I have not yet compiled the Dockbook.xml however.

NmapOps.cc

@@ -316,7 +316,6 @@ void NmapOps::Initialize() {
   xsl_stylesheet = NULL;
   spoof_mac_set = false;
   mass_dns = true;
-  log_errors = false;
   deprecated_xml_osclass = false;
   resolve_all = 0;
   dns_servers = NULL;

NmapOps.h

@@ -321,8 +321,7 @@ class NmapOps {
   int resolve_all;
   char *dns_servers;
 
-  // Logging options
-  bool log_errors;
+
   // If true, write <os><osclass/><osmatch/></os> as in xmloutputversion 1.03
   // rather than <os><osmatch><osclass/></osmatch></os> as in 1.04 and later.
   bool deprecated_xml_osclass;

docs/refguide.xml

@@ -3872,36 +3872,7 @@ hosts with at least one
         by Nmap.  This is useful for debugging routing problems or
         device mischaracterization (such as Nmap treating a PPP
         connection as ethernet).</para> </listitem> </varlistentry>
-
-      <varlistentry>
-        <term>
-          <option>--log-errors</option> (Log errors/warnings to normal mode output file)
-          <indexterm significance="preferred"><primary><option>--log-errors</option></primary></indexterm>
-        </term>
-        <listitem>
-
-          <para>Warnings and errors printed by Nmap usually go only to
-          the screen (interactive output), leaving any normal-format
-          output files (usually specified with <option>-oN</option>)
-          uncluttered.  When you do want to see those messages in the
-          normal output file you specified, add this option. It is
-          useful when you aren't watching the interactive output or
-          when you want to record errors while debugging a problem.
-          The error and warning messages will still appear in
-          interactive mode too.  This won't work for most errors
-          related to bad command-line arguments because Nmap may not
-          have initialized its output files yet.  In addition, some
-          Nmap error and warning messages use a different system which
-          does not yet support this option.</para>
-
-          <para>An alternative to <option>--log-errors</option> is
-          redirecting interactive output (including the standard error
-          stream) to a file.  Most Unix shells make this
-          approach easy, though it can be difficult on Windows.</para>
-
-        </listitem>
-      </varlistentry>
-
+   
    </variablelist>
 
    <variablelist><title>Miscellaneous output options</title>

nmap.cc

@@ -847,7 +847,6 @@ void parse_options(int argc, char **argv) {
       } else if (optcmp(long_options[option_index].name, "dns-servers") == 0) {
         o.dns_servers = strdup(optarg);
       } else if (optcmp(long_options[option_index].name, "log-errors") == 0) {
-        o.log_errors = 1;
       } else if (optcmp(long_options[option_index].name, "deprecated-xml-osclass") == 0) {
         o.deprecated_xml_osclass = true;
       } else if (strcmp(long_options[option_index].name, "webxml") == 0) {

nmap_error.cc

@@ -115,12 +115,11 @@ void fatal(const char *fmt, ...) {
   va_start(ap, fmt);
   log_vwrite(LOG_STDERR, fmt, ap);
   va_end(ap);
-  if (o.log_errors) {
-    va_start(ap, fmt);
-    log_vwrite(LOG_NORMAL, fmt, ap);
-    va_end(ap);
-  }
-  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, "\nQUITTING!\n");
+  va_start(ap, fmt);
+  log_vwrite(LOG_NORMAL, fmt, ap);
+  va_end(ap);
+
+  log_write(LOG_NORMAL|LOG_STDERR, "\nQUITTING!\n");
 
   if (xml_tag_open())
     xml_close_start_tag();
@@ -163,13 +162,10 @@ void error(const char *fmt, ...) {
   va_start(ap, fmt);
   log_vwrite(LOG_STDERR, fmt, ap);
   va_end(ap);
-  
-  if (o.log_errors) {
-    va_start(ap, fmt);
+  va_start(ap, fmt);
     log_vwrite(LOG_NORMAL, fmt, ap);
     va_end(ap);
-  }
-  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, "\n");
+  log_write(LOG_NORMAL|LOG_STDERR , "\n");
   return;
 }
 
@@ -197,7 +193,7 @@ void pfatal(const char *fmt, ...) {
   Vsnprintf(errbuf, sizeof(errbuf), fmt, ap);
   va_end(ap);
 
-  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, "%s: %s (%d)\n", 
+  log_write(LOG_NORMAL|LOG_STDERR, "%s: %s (%d)\n",
 	    errbuf, strerror_s, error_number);
 
   if (xml_tag_open())
@@ -230,7 +226,7 @@ void pfatal(const char *fmt, ...) {
   HeapFree(GetProcessHeap(), 0, strerror_s);
 #endif
 
-  if (o.log_errors) log_flush(LOG_NORMAL);
+  log_flush(LOG_NORMAL);
   fflush(stderr);
   exit(1);
 }
@@ -255,19 +251,17 @@ void gh_perror(const char *fmt, ...) {
   va_start(ap, fmt);
   log_vwrite(LOG_STDERR, fmt, ap);
   va_end(ap);
-  if (o.log_errors) {
-      va_start(ap, fmt);
+  va_start(ap, fmt);
       log_vwrite(LOG_NORMAL, fmt, ap);
       va_end(ap);
-  }
-  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n",
+  log_write(LOG_NORMAL|LOG_STDERR, ": %s (%d)\n",
     strerror_s, error_number);
 
 #ifdef WIN32
   HeapFree(GetProcessHeap(), 0, strerror_s);
 #endif
 
-  if (o.log_errors) log_flush(LOG_NORMAL);
+  log_flush(LOG_NORMAL);
   fflush(stderr);
   return;
 }