The history buffer was defaulting to a normal GtkTextTagTable which was breaking stuff. This wasn't noticed before as a TalkatuTagTable is usually set up via glade.
/*
* talkatu
* Copyright (C) 2017-2019 Gary Kramlich <grim@reaperworld.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include<stdarg.h>
#include<gtk/gtk.h>
#include<pango/pango.h>
#include<talkatu/talkatutag.h>
#include<talkatu/talkatutagtable.h>
/**
* SECTION:talkatutagtable
* @Title: TagTable
* @Short_description: A simple formatting tag_table
*
* Talkatu provides a simple formatting tag_table that gives the user the ability
* to format any #TalkatuBuffer via the formatting actions.
*/
/**
* TALKATU_TYPE_TAG_TABLE:
*
* The standard _get_type macro for #TalkatuTagTable.
*/
/**
* TalkatuTagTable:
*
* A #GtkTextTagTable subclass that is preloaded with all of the #TalkatuTag's.