Index: apps/lang/english.lang
===================================================================
--- apps/lang/english.lang	(revision 30842)
+++ apps/lang/english.lang	(working copy)
@@ -12903,3 +12903,17 @@
     *: "Cancel Sleep Timer"
   </voice>
 </phrase>
+<phrase>
+  id: LANG_KEYPRESS_RESTARTS_SLEEP_TIMER
+  desc: whether to restart running sleep timer on keypress
+  user: core
+  <source>
+    *: "Restart Sleep Timer On Keypress"
+  </source>
+  <dest>
+    *: "Restart Sleep Timer On Keypress"
+  </dest>
+  <voice>
+    *: "Restart Sleep Timer On Keypress"
+  </voice>
+</phrase>
Index: apps/settings.h
===================================================================
--- apps/settings.h	(revision 30842)
+++ apps/settings.h	(working copy)
@@ -800,6 +800,7 @@
 
     int sleeptimer_duration;
     bool sleeptimer_on_startup;
+    bool keypress_restarts_sleeptimer;
 
 #ifdef HAVE_MORSE_INPUT
     bool morse_input; /* text input method setting */
Index: apps/menus/main_menu.c
===================================================================
--- apps/menus/main_menu.c	(revision 30842)
+++ apps/menus/main_menu.c	(working copy)
@@ -482,6 +482,8 @@
 #if CONFIG_RTC == 0
 MENUITEM_SETTING(sleeptimer_on_startup,
                  &global_settings.sleeptimer_on_startup, NULL);
+MENUITEM_SETTING(keypress_restarts_sleeptimer,
+                 &global_settings.keypress_restarts_sleeptimer, NULL);
 #endif
 
 MENUITEM_FUNCTION(show_credits_item, 0, ID2P(LANG_CREDITS),
@@ -530,7 +532,7 @@
 #if CONFIG_RTC
         &timedate_item,
 #else
-        &sleep_timer_call, &sleeptimer_on_startup,
+        &sleep_timer_call, &sleeptimer_on_startup, &keypress_restarts_sleeptimer,
 #endif
         &manage_settings,
         );
Index: apps/menus/time_menu.c
===================================================================
--- apps/menus/time_menu.c	(revision 30842)
+++ apps/menus/time_menu.c	(working copy)
@@ -138,6 +138,8 @@
 #endif /* HAVE_RTC_ALARM */
 MENUITEM_SETTING(sleeptimer_on_startup,
                  &global_settings.sleeptimer_on_startup, NULL);
+MENUITEM_SETTING(keypress_restarts_sleeptimer,
+                 &global_settings.keypress_restarts_sleeptimer, NULL);
 
 static void talk_timedate(void)
 {
@@ -244,7 +246,7 @@
           &alarm_wake_up_screen,
 #endif
 #endif
-          &sleeptimer_on_startup, &timeformat);
+          &sleeptimer_on_startup, &keypress_restarts_sleeptimer, &timeformat);
 
 int time_screen(void* ignored)
 {
Index: apps/settings_list.c
===================================================================
--- apps/settings_list.c	(revision 30842)
+++ apps/settings_list.c	(working copy)
@@ -1771,6 +1771,8 @@
                 UNIT_MIN, 5, 300, 5, sleeptimer_formatter, NULL, NULL),
     OFFON_SETTING(0, sleeptimer_on_startup, LANG_SLEEP_TIMER_ON_POWER_UP, false,
                   "sleeptimer on startup", NULL),
+    OFFON_SETTING(0, keypress_restarts_sleeptimer, LANG_KEYPRESS_RESTARTS_SLEEP_TIMER, false,
+                  "keypress restarts sleeptimer", NULL),
 #ifdef HAVE_TOUCHPAD_SENSITIVITY_SETTING
     CHOICE_SETTING(0, touchpad_sensitivity, LANG_TOUCHPAD_SENSITIVITY, 0,
                    "touchpad sensitivity", "normal,high", touchpad_set_sensitivity, 2,
Index: firmware/powermgmt.c
===================================================================
--- firmware/powermgmt.c	(revision 30842)
+++ firmware/powermgmt.c	(working copy)
@@ -47,6 +47,7 @@
 #if (CONFIG_PLATFORM & PLATFORM_HOSTED)
 #include <time.h>
 #endif
+#include "settings.h"
 
 #if (defined(IAUDIO_X5) || defined(IAUDIO_M5)) && !defined (SIMULATOR)
 #include "lcd-remote-target.h"
@@ -707,6 +708,8 @@
 void reset_poweroff_timer(void)
 {
     last_event_tick = current_tick;
+    if (sleeptimer_active && global_settings.keypress_restarts_sleeptimer)
+        set_sleep_timer(global_settings.sleeptimer_duration * 60);
 }
 
 void sys_poweroff(void)
Index: manual/appendix/config_file_options.tex
===================================================================
--- manual/appendix/config_file_options.tex	(revision 30842)
+++ manual/appendix/config_file_options.tex	(working copy)
@@ -107,6 +107,7 @@
     sleeptimer duration   & 5 to 300 (in steps of 5)
                                         & min\\
     sleeptimer on startup & off, on     & N/A\\
+    keypress restarts sleeptimer & off, on & N/A\\
     max files in playlist & 1000 - 32000 & N/A\\
     max files in dir & 50 - 10000       & N/A\\
     lang            & /path/filename.lng & N/A\\
Index: manual/configure_rockbox/sleep_timer.tex
===================================================================
--- manual/configure_rockbox/sleep_timer.tex	(revision 30842)
+++ manual/configure_rockbox/sleep_timer.tex	(working copy)
@@ -11,3 +11,6 @@
   current \setting{Sleep Timer}.
 \item[Start Sleep Timer On Boot:]
   If set, a \setting{Sleep Timer} will be initiated when the device starts.
+\item[Restart Sleep Timer On Keypress:]
+  If set, when a \setting{Sleep Timer} is active and a key is pressed, the
+  \setting{Sleep Timer} will be restarted with the initial duration.