3 files changed, 19 insertions, 19 deletions

diff --git a/src/msdos.c b/src/msdos.c
index 7545cd8bc6c..c34edf62009 100644
--- a/src/msdos.c
+++ b/src/msdos.c
@@ -1375,7 +1375,7 @@ IT_note_mode_line_highlight (struct window *w, int x, int mode_line_p)
              setting the global variable help_echo to the help string.  */
           help = Fget_text_property (make_number (glyph->charpos),
                                      Qhelp_echo, glyph->object);
-          if (STRINGP (help))
+          if (!NILP (help))
             help_echo = help;
         }
     }
@@ -1623,11 +1623,11 @@ IT_note_mouse_highlight (struct frame *f, int x, int y)
 
           /* Check overlays first.  */
           help = Qnil;
-          for (i = 0; i < noverlays && !STRINGP (help); ++i)
+          for (i = 0; i < noverlays && NILP (help); ++i)
             help = Foverlay_get (overlay_vec[i], Qhelp_echo); 
             
           /* Try text properties.  */
-          if (!STRINGP (help)
+          if (NILP (help)
               && ((STRINGP (glyph->object)
                    && glyph->charpos >= 0
                    && glyph->charpos < XSTRING (glyph->object)->size)
@@ -1637,7 +1637,7 @@ IT_note_mouse_highlight (struct frame *f, int x, int y)
             help = Fget_text_property (make_number (glyph->charpos),
                                        Qhelp_echo, glyph->object);
 
-          if (STRINGP (help))
+          if (!NILP (help))
             help_echo = help;
         }
           
@@ -3239,7 +3239,7 @@ dos_rawgetc ()
                                    mouse_last_x, mouse_last_y);
           /* If the contents of the global variable help_echo has
              changed, generate a HELP_EVENT.  */
-          if (STRINGP (help_echo) || STRINGP (previous_help_echo))
+          if (!NILP (help_echo) || !NILP (previous_help_echo))
             {
               event.kind = HELP_EVENT;
               event.frame_or_window = Fcons (selected_frame, help_echo);
diff --git a/src/w32term.c b/src/w32term.c
index 46025c6cd1f..3a8cfb8bba6 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -5801,7 +5801,7 @@ note_mode_line_highlight (w, x, mode_line_p)
              setting the global variable help_echo to the help string.  */
           help = Fget_text_property (make_number (glyph->charpos),
                                      Qhelp_echo, glyph->object);
-          if (STRINGP (help))
+          if (!NILP (help))
             help_echo = help;
 
           /* Change the mouse pointer according to what is under X/Y.  */
@@ -6060,11 +6060,11 @@ note_mouse_highlight (f, x, y)
 
           /* Check overlays first.  */
           help = Qnil;
-          for (i = 0; i < noverlays && !STRINGP (help); ++i)
+          for (i = 0; i < noverlays && NILP (help); ++i)
             help = Foverlay_get (overlay_vec[i], Qhelp_echo); 
             
           /* Try text properties.  */
-          if (!STRINGP (help)
+          if (NILP (help)
               && ((STRINGP (glyph->object)
                    && glyph->charpos >= 0
                    && glyph->charpos < XSTRING (glyph->object)->size)
@@ -6074,7 +6074,7 @@ note_mouse_highlight (f, x, y)
             help = Fget_text_property (make_number (glyph->charpos),
                                        Qhelp_echo, glyph->object);
             
-          if (STRINGP (help))
+          if (!NILP (help))
             help_echo = help;
         }
         
@@ -6306,7 +6306,7 @@ note_tool_bar_highlight (f, x, y)
      w32_read_socket does the rest.  */
   help_echo = (XVECTOR (f->current_tool_bar_items)
                ->contents[prop_idx + TOOL_BAR_ITEM_HELP]);
-  if (!STRINGP (help_echo))
+  if (NILP (help_echo))
     help_echo = (XVECTOR (f->current_tool_bar_items)
                  ->contents[prop_idx + TOOL_BAR_ITEM_CAPTION]);
 }
@@ -7610,8 +7610,8 @@ w32_read_socket (sd, bufp, numchars, expected)
 
           /* If the contents of the global variable help_echo
              has changed, generate a HELP_EVENT.  */
-          if (STRINGP (help_echo)
-              || STRINGP (previous_help_echo))
+          if (!NILP (help_echo)
+              || !NILP (previous_help_echo))
             {
               Lisp_Object frame;
 
diff --git a/src/xterm.c b/src/xterm.c
index 743c7f8934d..bc13fb98ba2 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -6314,7 +6314,7 @@ note_mode_line_highlight (w, x, mode_line_p)
              setting the global variable help_echo to the help string.  */
           help = Fget_text_property (make_number (glyph->charpos),
                                      Qhelp_echo, glyph->object);
-          if (STRINGP (help))
+          if (!NILP (help))
             help_echo = help;
 
           /* Change the mouse pointer according to what is under X/Y.  */
@@ -6571,11 +6571,11 @@ note_mouse_highlight (f, x, y)
 
           /* Check overlays first.  */
           help = Qnil;
-          for (i = 0; i < noverlays && !STRINGP (help); ++i)
+          for (i = 0; i < noverlays && NILP (help); ++i)
             help = Foverlay_get (overlay_vec[i], Qhelp_echo); 
             
           /* Try text properties.  */
-          if (!STRINGP (help)
+          if (NILP (help)
               && ((STRINGP (glyph->object)
                    && glyph->charpos >= 0
                    && glyph->charpos < XSTRING (glyph->object)->size)
@@ -6585,7 +6585,7 @@ note_mouse_highlight (f, x, y)
             help = Fget_text_property (make_number (glyph->charpos),
                                        Qhelp_echo, glyph->object);
             
-          if (STRINGP (help))
+          if (!NILP (help))
             help_echo = help;
         }
           
@@ -6818,7 +6818,7 @@ note_tool_bar_highlight (f, x, y)
      XTread_socket does the rest.  */
   help_echo = (XVECTOR (f->current_tool_bar_items)
                ->contents[prop_idx + TOOL_BAR_ITEM_HELP]);
-  if (!STRINGP (help_echo))
+  if (NILP (help_echo))
     help_echo = (XVECTOR (f->current_tool_bar_items)
                  ->contents[prop_idx + TOOL_BAR_ITEM_CAPTION]);
 }
@@ -9773,8 +9773,8 @@ XTread_socket (sd, bufp, numchars, expected)
 
                 /* If the contents of the global variable help_echo
                    has changed, generate a HELP_EVENT.  */
-                if (STRINGP (help_echo)
-                    || STRINGP (previous_help_echo))
+                if (!NILP (help_echo)
+                    || !NILP (previous_help_echo))
                   {
                     Lisp_Object frame;