void gtk_text_buffer_remove_all_tags ( GtkTextBuffer* buffer, const GtkTextIter* start, const GtkTextIter* end )
Removes all tags in the range between
end. Be careful
with this function; it could remove tags added in code unrelated to
the code you’re currently writing. That is, using this function is
probably a bad idea if you have two or more unrelated code sections
that add tags.