Removed GTK2/GTK3 dual-path preprocessor branches across src/fe-gtk by keeping GTK3-native paths only, including the high-density targets you prioritized (xtext.c, setup.c, maingui.c, gtkutil.c, servlistgui.c).

Removed GTK2 compatibility shims from headers (fe-gtk.h, gtkutil.h), leaving direct GTK3-facing declarations/includes only (and platform-specific guards unrelated to GTK2 kept as-is).

Cleaned GTK2-specific comments/wording now that behavior is GTK3-native (menu accelerator note and emoji/userlist comment blocks).

src/fe-gtk/chanview.c

@@ -46,11 +46,7 @@ struct _chanview
 	int size;			/* number of channels in view */
 
 	GtkWidget *box;	/* the box we destroy when changing implementations */
-#if HAVE_GTK3
 	PangoFontDescription *font_desc;	/* font used for tree */
-#else
-	InputStyle *style;	/* style used for tree */
-#endif
 	chan *focused;		/* currently focused channel */
 	int trunc_len;
 
@@ -301,11 +297,7 @@ chanview_box_destroy_cb (GtkWidget *box, chanview *cv)
 
 chanview *
 chanview_new (int type, int trunc_len, gboolean sort, gboolean use_icons,
-#if HAVE_GTK3
 				  PangoFontDescription *font_desc
-#else
-				  InputStyle *style
-#endif
 )
 {
 	chanview *cv;
@@ -313,16 +305,8 @@ chanview_new (int type, int trunc_len, gboolean sort, gboolean use_icons,
 	cv = g_new0 (chanview, 1);
 	cv->store = gtk_tree_store_new (5, G_TYPE_STRING, G_TYPE_POINTER,
 							  PANGO_TYPE_ATTR_LIST, GDK_TYPE_PIXBUF, G_TYPE_INT);
-#if HAVE_GTK3
 	cv->font_desc = font_desc;
-#else
-	cv->style = style;
-#endif
-#if HAVE_GTK3
 	cv->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
-#elif !HAVE_GTK3
-	cv->box = gtk_hbox_new (0, 0);
-#endif
 	cv->trunc_len = trunc_len;
 	cv->sorted = sort;
 	cv->use_icons = use_icons;