warning directs users to the FAQ

ps/common.h

@@ -148,7 +148,7 @@ typedef union sel_union {
   uid_t uid;
   gid_t gid;
   dev_t tty;
-  char  cmd[8];  /* this is _not_ \0 terminated */
+  char  cmd[16];  /* this is _not_ \0 terminated */
 } sel_union;
 
 typedef struct selection_node {

ps/display.c

@@ -246,7 +246,6 @@ static void simple_spew(void){
     exit(1);
   }
   memset(&buf, '#', sizeof(proc_t));
-  /* use "ps_" prefix to catch library mismatch */
   while(ps_readproc(ptp,&buf)){
     if(want_this_proc(&buf)) show_one_proc(&buf);
     if(buf.cmdline) free((void*)*buf.cmdline); // ought to reuse

ps/parser.c

@@ -121,7 +121,7 @@ static const char *parse_gid(char *str, sel_union *ret){
 }
 
 static const char *parse_cmd(char *str, sel_union *ret){
-  strncpy(ret->cmd, str, 8);  /* strncpy pads to end */
+  strncpy(ret->cmd, str, sizeof ret->cmd);  // strncpy pads to end
   return 0;
 }
 
@@ -1130,8 +1130,17 @@ try_bsd:
   err2 = select_bits_setup();
   if(err2) goto total_failure;
 
+  // Feel a need to patch this out? First of all, read the FAQ.
+  // Second of all, talk to me. Without this warning, people can
+  // get seriously confused. Ask yourself if users would freak out
+  // about "ps -aux" suddenly changing behavior if a user "x" were
+  // added to the system.
   if(!(personality & PER_FORCE_BSD))
-    fprintf(stderr, "Bad syntax, perhaps a bogus '-'?\n");
+    fprintf(stderr, "Warning: bad '-'? See http://procps.sf.net/faq.html\n");
+  // Remember: contact albert@users.sf.net or procps-feedback@lists.sf.net
+  // if you should feel tempted. Be damn sure you understand all
+  // the issues. The same goes for other stuff too, BTW. Please ask.
+  // I'm happy to justify various implementation choices.
 
   choose_dimensions();
   return 0;

ps/select.c

@@ -106,9 +106,8 @@ static int proc_was_listed(proc_t *buf){
     break; case SEL_TTY : return_if_match(tty,tty);
     break; case SEL_SESS: return_if_match(session,pid);
 
-    /* TODO Should use a long long cast for performance */
     break; case SEL_COMM: i=sn->n; while(i--)
-    if(!strncmp( buf->cmd, (*(sn->u+i)).cmd, 8 )) return 1;
+    if(!strncmp( buf->cmd, (*(sn->u+i)).cmd, 15 )) return 1;