Disable filelist saving from thumbnail mode (buggy and probably not useful)

ChangeLog

@@ -8,6 +8,9 @@ git HEAD
     * Rename --screen-clip 0 to --no-screen-clip
     * Allow multiline theme definitions (via backslash, like in the shell)
     * Center the image after pressing <keypad /> or <keypad *>
+    * Saving the filelist from thumbnail mode caused undefined behaviour due
+      to handling of uninitialised memory. Since I consider this a rarely
+      useful action, the feature has been disabled for thumbnail mode.
 
 Thu Jun 10 12:12:04 CEST 2010
 

TODO

@@ -24,8 +24,8 @@ A workaround (--thumb-redraw) exists, but at some point a rewrite with a
 GUI-toolkit or similar (or maybe writing a completely new tool for that and
 removing the feature from feh) would be due.
 
-Saving the filelist from thumbnail mode will access uninitialized memory if a
-file was removed from the filelist.
+Saving the filelist from thumbnail mode is not possible. I wonder if this
+matters enough to be fixed.
 
 Maybe: Zoom mode like --bg-fill?
 

man/feh.1

@@ -753,8 +753,6 @@ available or use the builtin HTTP client
 .Sh BUGS
 Xinerama support does not really work on Xinerama screens != 0.
 .Pp
-Saving the filelist after editing it from thumbnail mode does not work.
-.Pp
 If you find a bug, please report it to
 .Aq derf@chaosdorf.de
 .

src/keyevents.c

@@ -336,7 +336,11 @@ void feh_event_handle_keypress(XEvent * ev)
 		slideshow_save_image(winwid);
 		break;
 	case 'f':
-		feh_save_filelist();
+		if ((winwid->type == WIN_TYPE_THUMBNAIL)
+				|| (winwid->type == WIN_TYPE_THUMBNAIL_VIEWER))
+			weprintf("Filelist saving is not supported in thumbnail mode\n");
+		else
+			feh_save_filelist();
 		break;
 	case 'w':
 		winwidget_size_to_image(winwid);