This will be failed in first loop, **how to get first TAG ?**
**gtk_tree_model_get(model, &iter, SYMBOLS_COLUMN_TAG, &tag,
-1);**
```
static void on_update_all_index(GtkWidget *widget, gpointer user_data)
{
GtkTreeIter iter;
GeanyDocument * doc = document_get_current();
gboolean cont = TRUE;
gint line_num;
gint index_chr = 0;
GtkTreeStore * store = doc->priv->tag_store;
GtkTreeModel *model = GTK_TREE_MODEL(store);
unsigned int * seg = 0;
int count = 0;
if (!gtk_tree_model_get_iter_first(model, &iter)){
return;
}
do
{
TMTag * tag;
gtk_tree_model_get(model, &iter, SYMBOLS_COLUMN_TAG, &tag, -1);
if(!tag){
cont = ui_tree_model_iter_any_next(model, &iter, TRUE);
}else{
line_num = tag->line;
#if 1
if(line_num >= 0){
index_chr++;
//editor_udpate_chapter_index_quickly(doc->editor,index_chr,line_num);
}
#endif
tm_tag_unref(tag);
}
}
while (gtk_tree_model_iter_next(model, &iter));
}
```
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