fix timestamp selection handling

src/fe-gtk/xtext.c

@@ -2119,8 +2119,19 @@ static gboolean
 gtk_xtext_check_mark_stamp (GtkXText *xtext, GdkModifierType mask)
 {
 	gboolean redraw = FALSE;
+	gboolean selecting_stamp = FALSE;
 
-	if ((mask & STATE_SHIFT || prefs.hex_text_autocopy_stamp)
+	/* A drag into the timestamp column deliberately includes the stamp.
+	   Ordinary message selection does not.  Only indented views have a
+	   separate timestamp column; inline stamps are part of the text. */
+	if (xtext->button_down && xtext->buffer->time_stamp && xtext->auto_indent)
+	{
+		selecting_stamp =
+			(xtext->select_start_x >= 0 && xtext->select_start_x < xtext->stamp_width) ||
+			(xtext->select_end_x >= 0 && xtext->select_end_x < xtext->stamp_width);
+	}
+
+	if ((mask & STATE_SHIFT || prefs.hex_text_autocopy_stamp || selecting_stamp)
 	    && (!prefs.hex_stamp_text || prefs.hex_text_indent))
 	{
 		if (!xtext->mark_stamp)
@@ -2254,13 +2265,15 @@ gtk_xtext_motion_notify (GtkWidget * widget, GdkEventMotion * event)
 
 	if (xtext->button_down)
 	{
-		redraw = gtk_xtext_check_mark_stamp (xtext, mask);
-		gtk_grab_add (widget);
+		/* Update the pointer position before deciding whether this drag
+		   explicitly includes the timestamp column. */
 		xtext->select_end_x = x;
 		xtext->select_end_y = y;
+		redraw = gtk_xtext_check_mark_stamp (xtext, mask);
+		gtk_grab_add (widget);
 		gtk_xtext_selection_update (xtext, event, y, !redraw);
 
-		/* user has pressed or released SHIFT, must redraw entire selection */
+		/* SHIFT or timestamp inclusion changed: redraw the full selection. */
 		if (redraw)
 		{
 			xtext->force_stamp = TRUE;
@@ -2711,8 +2724,8 @@ gtk_xtext_selection_get_text (GtkXText *xtext, int *len_ret)
 			if (!first)
 				g_string_append_c (text, '\n');
 			first = FALSE;
-			if (ent->mark_end > ent->mark_start)
-			{
+			/* A selection entirely within the timestamp column has no
+			   message bytes selected, but should still copy the stamp. */
 			if (ent->mark_start == 0 && xtext->mark_stamp && ent->stamp_len == 0)
 			{
 				char *stamp;
@@ -2720,10 +2733,10 @@ gtk_xtext_selection_get_text (GtkXText *xtext, int *len_ret)
 				g_string_append_len (text, stamp, len);
 				g_free (stamp);
 			}
+			if (ent->mark_end > ent->mark_start)
 				g_string_append_len (text, (char *)ent->str + ent->mark_start,
 					ent->mark_end - ent->mark_start);
 		}
-		}
 		if (ent == buf->last_ent_end)
 			break;
 	}
@@ -3974,6 +3987,12 @@ gtk_xtext_render_stamp (GtkXText * xtext, textentry * ent,
 			ent->mark_end = -1;
 		}
 	}
+	else
+	{
+		/* Message selection offsets must not select unrelated stamp bytes. */
+		ent->mark_start = -1;
+		ent->mark_end = -1;
+	}
 
 	y = (xtext->fontsize * line) + xtext->font->ascent - xtext->pixel_offset;
 	gtk_xtext_render_str (xtext, y, ent, text, len,