Remove "-time": instead recommend an external tool

Undoing my unnecessary feature creep.

readme.markdown

@@ -44,7 +44,6 @@ Flags you can pass (all optional):
  - `-delay <nanosec>`: delay between polls to the keyboard (default `10000000`;
    that's 100ms)
  - `-up`: also prepend key-ups (default: don't)
- - `-time`: also append epoch timestamps (default: don't)
  - `-help`: print usage hints and exit
 
 Then just type as you would usually. Interrupt signal (`C-c`) to end.
@@ -55,12 +54,17 @@ If you like spying on people (ethically, of course), [`xspy`][1] or
 [`logkeys`][2] might be better for you. They use the modifier keys to infer
 what was actually typed, so it's easier to read what's happening.
 
+If you want to add timestamps to each line for logging purposes, I recommend
+piping to the [moreutils package][3]'s `ts`.  [These answers][4] feature
+various other tools good for the purpose.
+
 ## License
 
-[ISC][3].
+[ISC][5].
 
 
 [1]: http://www.freshports.org/security/xspy/
 [2]: http://code.google.com/p/logkeys/
-[3]: http://opensource.org/licenses/ISC
-[Chi]: http://en.wikipedia.org/wiki/Chi's_Sweet_Home
+[3]: http://joeyh.name/code/moreutils/
+[4]: http://stackoverflow.com/questions/21564/is-there-a-unix-utility-to-prepend-timestamps-to-lines-of-text
+[5]: http://opensource.org/licenses/ISC

xkbcat.c

@@ -11,7 +11,6 @@
 const char * DEFAULT_DISPLAY    = ":0";
 const int    DEFAULT_DELAY      = 10000000;
 const bool   DEFAULT_PRINT_UP   = false;
-const bool   DEFAULT_PRINT_TIME = false;
 
 typedef char KbBuffer[32];
 
@@ -24,14 +23,12 @@ static inline bool keyState(KbBuffer b, int key) {
 
 int printUsage() {
     printf("\
-USAGE: xkbcat [-display <display>] [-delay <nanosec>] [-up] [-time]\n\
+USAGE: xkbcat [-display <display>] [-delay <nanosec>] [-up]\n\
     display  target X display                   (default %s)\n\
     delay    polling frequency; nanoseconds     (default %d)\n\
-    up       also print key-ups                 (default %s)\n\
-    time     also print timestamps              (default %s)\n",
+    up       also print key-ups                 (default %s)\n",
         DEFAULT_DISPLAY, DEFAULT_DELAY,
-        (DEFAULT_PRINT_UP   ? "yes" : "no"),
-        (DEFAULT_PRINT_TIME ? "yes" : "no") );
+        (DEFAULT_PRINT_UP   ? "yes" : "no") );
     exit(0);
 }
 
@@ -40,15 +37,13 @@ int main(int argc, char * argv[]) {
     const char * hostname    = DEFAULT_DISPLAY;
     int          delay       = DEFAULT_DELAY;
     bool         printKeyUps = DEFAULT_PRINT_UP;
-    bool         printTimes  = DEFAULT_PRINT_TIME;
 
     // Get arguments
     for (int i = 1; i < argc; i++) {
         if      (!strcmp(argv[i], "-help"))     printUsage();
         else if (!strcmp(argv[i], "-display"))  hostname    = argv[++i];
         else if (!strcmp(argv[i], "-delay"))    delay       = atoi(argv[++i]);
         else if (!strcmp(argv[i], "-up"))       printKeyUps = true;
-        else if (!strcmp(argv[i], "-time"))     printTimes  = true;
         else { printf("Unexpected argument `%s`\n", argv[i]); printUsage(); }
     }
 
@@ -71,8 +66,6 @@ int main(int argc, char * argv[]) {
 
     while (1) { // Forever
         XQueryKeymap(disp, *keys); // Fetch changed keys
-        long timestamp = 0;
-        if (printTimes) timestamp = (long)time(NULL);
 
         for (int keyCode = 0; keyCode < sizeof(KbBuffer) * 8; keyCode++) {
             bool stateBefore = keyState(*oldKeys, keyCode),
@@ -87,9 +80,7 @@ int main(int argc, char * argv[]) {
                 if (NULL == str)   continue;
 
                 if (printKeyUps) printf("%s ", (stateNow ? "+" : "-"));
-                printf("%s", str);
-                if (printTimes)  printf(" %ld", timestamp);
-                printf("\n");
+                printf("%s\n", str);
             }
         }
         // Make sure the data is sent right away if it's being written to a