new file mode 100644
--- /dev/null
+++ b/src/textprop.c
@@ -0,0 +1,869 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * Text properties implementation.
+ *
+ * Text properties are attached to the text.  They move with the text when
+ * text is inserted/deleted.
+ *
+ * Text properties have a user specified ID number, which can be unique.
+ * Text properties have a type, which can be used to specify highlighting.
+ *
+ * TODO:
+ * - Add an arrray for global_proptypes, to quickly lookup a proptype by ID
+ * - Add an arrray for b_proptypes, to quickly lookup a proptype by ID
+ * - adjust property column when text is inserted/deleted
+ * - support properties that continue over a line break
+ * - add mechanism to keep track of changed lines.
+ */
+
+#include "vim.h"
+
+#if defined(FEAT_TEXT_PROP) || defined(PROTO)
+
+/*
+ * In a hashtable item "hi_key" points to "pt_name" in a proptype_T.
+ * This avoids adding a pointer to the hashtable item.
+ * PT2HIKEY() converts a proptype pointer to a hashitem key pointer.
+ * HIKEY2PT() converts a hashitem key pointer to a proptype pointer.
+ * HI2PT() converts a hashitem pointer to a proptype pointer.
+ */
+#define PT2HIKEY(p)  ((p)->pt_name)
+#define HIKEY2PT(p)   ((proptype_T *)((p) - offsetof(proptype_T, pt_name)))
+#define HI2PT(hi)      HIKEY2PT((hi)->hi_key)
+
+// The global text property types.
+static hashtab_T *global_proptypes = NULL;
+
+// The last used text property type ID.
+static int proptype_id = 0;
+
+static char_u e_type_not_exist[] = N_("E971: Property type %s does not exist");
+static char_u e_invalid_col[] = N_("E964: Invalid column number: %ld");
+
+/*
+ * Find a property type by name, return the hashitem.
+ * Returns NULL if the item can't be found.
+ */
+    static hashitem_T *
+find_prop_hi(char_u *name, buf_T *buf)
+{
+    hashtab_T	*ht;
+    hashitem_T	*hi;
+
+    if (*name == NUL)
+	return NULL;
+    if (buf == NULL)
+	ht = global_proptypes;
+    else
+	ht = buf->b_proptypes;
+
+    if (ht == NULL)
+	return NULL;
+    hi = hash_find(ht, name);
+    if (HASHITEM_EMPTY(hi))
+	return NULL;
+    return hi;
+}
+
+/*
+ * Like find_prop_hi() but return the property type.
+ */
+    static proptype_T *
+find_prop(char_u *name, buf_T *buf)
+{
+    hashitem_T	*hi = find_prop_hi(name, buf);
+
+    if (hi == NULL)
+	return NULL;
+    return HI2PT(hi);
+}
+
+/*
+ * Lookup a property type by name.  First in "buf" and when not found in the
+ * global types.
+ * When not found gives an error message and returns NULL.
+ */
+    static proptype_T *
+lookup_prop_type(char_u *name, buf_T *buf)
+{
+    proptype_T *type = find_prop(name, buf);
+
+    if (type == NULL)
+	type = find_prop(name, NULL);
+    if (type == NULL)
+	EMSG2(_(e_type_not_exist), name);
+    return type;
+}
+
+/*
+ * Get an optional "bufnr" item from the dict in "arg".
+ * When the argument is not used or "bufnr" is not present then "buf" is
+ * unchanged.
+ * If "bufnr" is valid or not present return OK.
+ * When "arg" is not a dict or "bufnr" is invalide return FAIL.
+ */
+    static int
+get_bufnr_from_arg(typval_T *arg, buf_T **buf)
+{
+    dictitem_T	*di;
+
+    if (arg->v_type != VAR_DICT)
+    {
+	EMSG(_(e_dictreq));
+	return FAIL;
+    }
+    if (arg->vval.v_dict == NULL)
+	return OK;  // NULL dict is like an empty dict
+    di = dict_find(arg->vval.v_dict, (char_u *)"bufnr", -1);
+    if (di != NULL)
+    {
+	*buf = get_buf_tv(&di->di_tv, FALSE);
+	if (*buf == NULL)
+	    return FAIL;
+    }
+    return OK;
+}
+
+/*
+ * prop_add({lnum}, {col}, {props})
+ */
+    void
+f_prop_add(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    linenr_T	lnum;
+    colnr_T	col;
+    dict_T	*dict;
+    colnr_T	length = 1;
+    char_u	*type_name;
+    proptype_T	*type;
+    buf_T	*buf = curbuf;
+    int		id = 0;
+    char_u	*newtext;
+    int		proplen;
+    size_t	textlen;
+    char_u	*props;
+    char_u	*newprops;
+    static textprop_T	tmp_prop; // static to get it aligned.
+    int		i;
+
+    lnum = get_tv_number(&argvars[0]);
+    col = get_tv_number(&argvars[1]);
+    if (col < 1)
+    {
+	EMSGN(_(e_invalid_col), (long)col);
+	return;
+    }
+    if (argvars[2].v_type != VAR_DICT)
+    {
+	EMSG(_(e_dictreq));
+	return;
+    }
+    dict = argvars[2].vval.v_dict;
+
+    if (dict == NULL || dict_find(dict, (char_u *)"type", -1) == NULL)
+    {
+	EMSG(_("E965: missing property type name"));
+	return;
+    }
+    type_name = get_dict_string(dict, (char_u *)"type", FALSE);
+
+    if (dict_find(dict, (char_u *)"end_lnum", -1) != NULL)
+    {
+	// TODO: handle end_lnum
+	EMSG("Sorry, end_lnum not supported yet");
+	return;
+    }
+
+    if (dict_find(dict, (char_u *)"length", -1) != NULL)
+	length = get_dict_number(dict, (char_u *)"length");
+    else if (dict_find(dict, (char_u *)"end_col", -1) != NULL)
+    {
+	length = get_dict_number(dict, (char_u *)"end_col") - col;
+	if (length <= 0)
+	{
+	    EMSG2(_(e_invargval), "end_col");
+	    return;
+	}
+    }
+
+    if (dict_find(dict, (char_u *)"id", -1) != NULL)
+	id = get_dict_number(dict, (char_u *)"id");
+
+    if (get_bufnr_from_arg(&argvars[2], &buf) == FAIL)
+	return;
+
+    type = lookup_prop_type(type_name, buf);
+    if (type == NULL)
+	return;
+
+    if (lnum < 1 || lnum > buf->b_ml.ml_line_count)
+    {
+	EMSGN(_("E966: Invalid line number: %ld"), (long)lnum);
+	return;
+    }
+
+    // Fetch the line to get the ml_line_len field updated.
+    proplen = get_text_props(buf, lnum, &props, TRUE);
+
+    if (col >= (colnr_T)STRLEN(buf->b_ml.ml_line_ptr))
+    {
+	EMSGN(_(e_invalid_col), (long)col);
+	return;
+    }
+
+    // Allocate the new line with space for the new proprety.
+    newtext = alloc(buf->b_ml.ml_line_len + sizeof(textprop_T));
+    if (newtext == NULL)
+	return;
+    // Copy the text, including terminating NUL.
+    textlen = buf->b_ml.ml_line_len - proplen * sizeof(textprop_T);
+    mch_memmove(newtext, buf->b_ml.ml_line_ptr, textlen);
+
+    // Find the index where to insert the new property.
+    // Since the text properties are not aligned properly when stored with the
+    // text, we need to copy them as bytes before using it as a struct.
+    for (i = 0; i < proplen; ++i)
+    {
+	mch_memmove(&tmp_prop, props + i * sizeof(proptype_T),
+							   sizeof(proptype_T));
+	if (tmp_prop.tp_col >= col)
+	    break;
+    }
+    newprops = newtext + textlen;
+    if (i > 0)
+	mch_memmove(newprops, props, sizeof(textprop_T) * i);
+
+    tmp_prop.tp_col = col;
+    tmp_prop.tp_len = length;
+    tmp_prop.tp_id = id;
+    tmp_prop.tp_type = type->pt_id;
+    tmp_prop.tp_flags = 0;
+    mch_memmove(newprops + i * sizeof(textprop_T), &tmp_prop,
+							   sizeof(textprop_T));
+
+    if (i < proplen)
+	mch_memmove(newprops + (i + 1) * sizeof(textprop_T),
+					props + i * sizeof(textprop_T),
+					sizeof(textprop_T) * (proplen - i));
+
+    if (buf->b_ml.ml_flags & ML_LINE_DIRTY)
+	vim_free(buf->b_ml.ml_line_ptr);
+    buf->b_ml.ml_line_ptr = newtext;
+    buf->b_ml.ml_line_len += sizeof(textprop_T);
+    buf->b_ml.ml_flags |= ML_LINE_DIRTY;
+
+    redraw_buf_later(buf, NOT_VALID);
+}
+
+/*
+ * Return TRUE if any text properties are defined globally or for buffer
+ * 'buf".
+ */
+    int
+has_any_text_properties(buf_T *buf)
+{
+    return buf->b_proptypes != NULL || global_proptypes != NULL;
+}
+
+/*
+ * Fetch the text properties for line "lnum" in buffer 'buf".
+ * Returns the number of text properties and, when non-zero, a pointer to the
+ * first one in "props" (note that it is not aligned, therefore the char_u
+ * pointer).
+ */
+    int
+get_text_props(buf_T *buf, linenr_T lnum, char_u **props, int will_change)
+{
+    char_u *text;
+    size_t textlen;
+    size_t proplen;
+
+    // Be quick when no text property types are defined.
+    if (!has_any_text_properties(buf))
+	return 0;
+
+    // Fetch the line to get the ml_line_len field updated.
+    text = ml_get_buf(buf, lnum, will_change);
+    textlen = STRLEN(text) + 1;
+    proplen = buf->b_ml.ml_line_len - textlen;
+    if (proplen % sizeof(textprop_T) != 0)
+    {
+	IEMSG(_("E967: text property info corrupted"));
+	return 0;
+    }
+    if (proplen > 0)
+	*props = text + textlen;
+    return proplen / sizeof(textprop_T);
+}
+
+    static proptype_T *
+find_type_by_id(hashtab_T *ht, int id)
+{
+    long	todo;
+    hashitem_T	*hi;
+
+    if (ht == NULL)
+	return NULL;
+
+    // TODO: Make this faster by keeping a list of types sorted on ID and use
+    // a binary search.
+
+    todo = (long)ht->ht_used;
+    for (hi = ht->ht_array; todo > 0; ++hi)
+    {
+	if (!HASHITEM_EMPTY(hi))
+	{
+	    proptype_T *prop = HI2PT(hi);
+
+	    if (prop->pt_id == id)
+		return prop;
+	    --todo;
+	}
+    }
+    return NULL;
+}
+
+/*
+ * Find a property type by ID in "buf" or globally.
+ * Returns NULL if not found.
+ */
+    proptype_T *
+text_prop_type_by_id(buf_T *buf, int id)
+{
+    proptype_T *type;
+
+    type = find_type_by_id(buf->b_proptypes, id);
+    if (type == NULL)
+	type = find_type_by_id(global_proptypes, id);
+    return type;
+}
+
+/*
+ * prop_clear({lnum} [, {lnum_end} [, {bufnr}]])
+ */
+    void
+f_prop_clear(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    linenr_T start = get_tv_number(&argvars[0]);
+    linenr_T end = start;
+    linenr_T lnum;
+    buf_T    *buf = curbuf;
+
+    if (argvars[1].v_type != VAR_UNKNOWN)
+    {
+	end = get_tv_number(&argvars[1]);
+	if (argvars[2].v_type != VAR_UNKNOWN)
+	{
+	    if (get_bufnr_from_arg(&argvars[2], &buf) == FAIL)
+		return;
+	}
+    }
+    if (start < 1 || end < 1)
+    {
+	EMSG(_(e_invrange));
+	return;
+    }
+
+    for (lnum = start; lnum <= end; ++lnum)
+    {
+	char_u *text;
+	size_t len;
+
+	if (lnum > buf->b_ml.ml_line_count)
+	    break;
+	text = ml_get_buf(buf, lnum, FALSE);
+	len = STRLEN(text) + 1;
+	if ((size_t)buf->b_ml.ml_line_len > len)
+	{
+	    if (!(buf->b_ml.ml_flags & ML_LINE_DIRTY))
+	    {
+		char_u *newtext = vim_strsave(text);
+
+		// need to allocate the line now
+		if (newtext == NULL)
+		    return;
+		buf->b_ml.ml_line_ptr = newtext;
+		buf->b_ml.ml_flags |= ML_LINE_DIRTY;
+	    }
+	    buf->b_ml.ml_line_len = len;
+	}
+    }
+    redraw_buf_later(buf, NOT_VALID);
+}
+
+/*
+ * prop_list({lnum} [, {bufnr}])
+ */
+    void
+f_prop_list(typval_T *argvars, typval_T *rettv)
+{
+    linenr_T lnum = get_tv_number(&argvars[0]);
+    buf_T    *buf = curbuf;
+
+    if (argvars[1].v_type != VAR_UNKNOWN)
+    {
+	if (get_bufnr_from_arg(&argvars[1], &buf) == FAIL)
+	    return;
+    }
+    if (lnum < 1 || lnum > buf->b_ml.ml_line_count)
+    {
+	EMSG(_(e_invrange));
+	return;
+    }
+
+    if (rettv_list_alloc(rettv) == OK)
+    {
+	char_u	    *text = ml_get_buf(buf, lnum, FALSE);
+	size_t	    textlen = STRLEN(text) + 1;
+	int	    count = (buf->b_ml.ml_line_len - textlen)
+							  / sizeof(textprop_T);
+	int	    i;
+	textprop_T  prop;
+	proptype_T  *pt;
+
+	for (i = 0; i < count; ++i)
+	{
+	    dict_T *d = dict_alloc();
+
+	    if (d == NULL)
+		break;
+	    mch_memmove(&prop, text + textlen + i * sizeof(textprop_T),
+							   sizeof(textprop_T));
+	    dict_add_number(d, "col", prop.tp_col);
+	    dict_add_number(d, "length", prop.tp_len);
+	    dict_add_number(d, "id", prop.tp_id);
+	    dict_add_number(d, "start", !(prop.tp_flags & TP_FLAG_CONT_PREV));
+	    dict_add_number(d, "end", !(prop.tp_flags & TP_FLAG_CONT_NEXT));
+	    pt = text_prop_type_by_id(buf, prop.tp_type);
+	    if (pt != NULL)
+		dict_add_string(d, "type", pt->pt_name);
+
+	    list_append_dict(rettv->vval.v_list, d);
+	}
+    }
+}
+
+/*
+ * prop_remove({props} [, {lnum} [, {lnum_end}]])
+ */
+    void
+f_prop_remove(typval_T *argvars, typval_T *rettv)
+{
+    linenr_T	start = 1;
+    linenr_T	end = 0;
+    linenr_T	lnum;
+    dict_T	*dict;
+    buf_T	*buf = curbuf;
+    dictitem_T	*di;
+    int		do_all = FALSE;
+    int		id = -1;
+    int		type_id = -1;
+
+    rettv->vval.v_number = 0;
+    if (argvars[0].v_type != VAR_DICT || argvars[0].vval.v_dict == NULL)
+    {
+	EMSG(_(e_invarg));
+	return;
+    }
+
+    if (argvars[1].v_type != VAR_UNKNOWN)
+    {
+	start = get_tv_number(&argvars[1]);
+	end = start;
+	if (argvars[2].v_type != VAR_UNKNOWN)
+	    end = get_tv_number(&argvars[2]);
+	if (start < 1 || end < 1)
+	{
+	    EMSG(_(e_invrange));
+	    return;
+	}
+    }
+
+    dict = argvars[0].vval.v_dict;
+    di = dict_find(dict, (char_u *)"bufnr", -1);
+    if (di != NULL)
+    {
+	buf = get_buf_tv(&di->di_tv, FALSE);
+	if (buf == NULL)
+	    return;
+    }
+
+    di = dict_find(dict, (char_u*)"all", -1);
+    if (di != NULL)
+	do_all = get_dict_number(dict, (char_u *)"all");
+
+    if (dict_find(dict, (char_u *)"id", -1) != NULL)
+	id = get_dict_number(dict, (char_u *)"id");
+    if (dict_find(dict, (char_u *)"type", -1))
+    {
+	char_u	    *name = get_dict_string(dict, (char_u *)"type", FALSE);
+	proptype_T  *type = lookup_prop_type(name, buf);
+
+	if (type == NULL)
+	    return;
+	type_id = type->pt_id;
+    }
+    if (id == -1 && type_id == -1)
+    {
+	EMSG(_("E968: Need at least one of 'id' or 'type'"));
+	return;
+    }
+
+    if (end == 0)
+	end = buf->b_ml.ml_line_count;
+    for (lnum = start; lnum <= end; ++lnum)
+    {
+	char_u *text;
+	size_t len;
+
+	if (lnum > buf->b_ml.ml_line_count)
+	    break;
+	text = ml_get_buf(buf, lnum, FALSE);
+	len = STRLEN(text) + 1;
+	if ((size_t)buf->b_ml.ml_line_len > len)
+	{
+	    static textprop_T textprop;  // static because of alignment
+	    unsigned          idx;
+
+	    for (idx = 0; idx < (buf->b_ml.ml_line_len - len)
+						   / sizeof(textprop_T); ++idx)
+	    {
+		char_u *cur_prop = buf->b_ml.ml_line_ptr + len
+						    + idx * sizeof(textprop_T);
+		size_t	taillen;
+
+		mch_memmove(&textprop, cur_prop, sizeof(textprop_T));
+		if (textprop.tp_id == id || textprop.tp_type == type_id)
+		{
+		    if (!(buf->b_ml.ml_flags & ML_LINE_DIRTY))
+		    {
+			char_u *newptr = alloc(buf->b_ml.ml_line_len);
+
+			// need to allocate the line to be able to change it
+			if (newptr == NULL)
+			    return;
+			mch_memmove(newptr, buf->b_ml.ml_line_ptr,
+							buf->b_ml.ml_line_len);
+			buf->b_ml.ml_line_ptr = newptr;
+			curbuf->b_ml.ml_flags |= ML_LINE_DIRTY;
+		    }
+
+		    taillen = buf->b_ml.ml_line_len - len
+					      - (idx + 1) * sizeof(textprop_T);
+		    if (taillen > 0)
+			mch_memmove(cur_prop, cur_prop + sizeof(textprop_T),
+								      taillen);
+		    buf->b_ml.ml_line_len -= sizeof(textprop_T);
+		    --idx;
+
+		    ++rettv->vval.v_number;
+		    if (!do_all)
+			break;
+		}
+	    }
+	}
+    }
+    redraw_buf_later(buf, NOT_VALID);
+}
+
+/*
+ * Common for f_prop_type_add() and f_prop_type_change().
+ */
+    void
+prop_type_set(typval_T *argvars, int add)
+{
+    char_u	*name;
+    buf_T	*buf = NULL;
+    dict_T	*dict;
+    dictitem_T  *di;
+    proptype_T	*prop;
+
+    name = get_tv_string(&argvars[0]);
+    if (*name == NUL)
+    {
+	EMSG(_(e_invarg));
+	return;
+    }
+
+    if (get_bufnr_from_arg(&argvars[1], &buf) == FAIL)
+	return;
+    dict = argvars[1].vval.v_dict;
+
+    prop = find_prop(name, buf);
+    if (add)
+    {
+	hashtab_T **htp;
+
+	if (prop != NULL)
+	{
+	    EMSG2(_("E969: Property type %s already defined"), name);
+	    return;
+	}
+	prop = (proptype_T *)alloc_clear(sizeof(proptype_T) + STRLEN(name));
+	if (prop == NULL)
+	    return;
+	STRCPY(prop->pt_name, name);
+	prop->pt_id = ++proptype_id;
+	htp = buf == NULL ? &global_proptypes : &buf->b_proptypes;
+	if (*htp == NULL)
+	{
+	    *htp = (hashtab_T *)alloc(sizeof(hashtab_T));
+	    if (*htp == NULL)
+		return;
+	    hash_init(*htp);
+	}
+	hash_add(buf == NULL ? global_proptypes : buf->b_proptypes,
+							       PT2HIKEY(prop));
+    }
+    else
+    {
+	if (prop == NULL)
+	{
+	    EMSG2(_(e_type_not_exist), name);
+	    return;
+	}
+    }
+
+    if (dict != NULL)
+    {
+	di = dict_find(dict, (char_u *)"highlight", -1);
+	if (di != NULL)
+	{
+	    char_u	*highlight;
+	    int		hl_id = 0;
+
+	    highlight = get_dict_string(dict, (char_u *)"highlight", TRUE);
+	    if (highlight != NULL && *highlight != NUL)
+		hl_id = syn_name2id(highlight);
+	    if (hl_id <= 0)
+	    {
+		EMSG2(_("E970: Unknown highlight group name: '%s'"),
+			highlight == NULL ? (char_u *)"" : highlight);
+		return;
+	    }
+	    prop->pt_hl_id = hl_id;
+	}
+
+	di = dict_find(dict, (char_u *)"priority", -1);
+	if (di != NULL)
+	    prop->pt_priority = get_tv_number(&di->di_tv);
+
+	di = dict_find(dict, (char_u *)"start_incl", -1);
+	if (di != NULL)
+	{
+	    if (get_tv_number(&di->di_tv))
+		prop->pt_flags |= PT_FLAG_INS_START_INCL;
+	    else
+		prop->pt_flags &= ~PT_FLAG_INS_START_INCL;
+	}
+
+	di = dict_find(dict, (char_u *)"end_incl", -1);
+	if (di != NULL)
+	{
+	    if (get_tv_number(&di->di_tv))
+		prop->pt_flags |= PT_FLAG_INS_END_INCL;
+	    else
+		prop->pt_flags &= ~PT_FLAG_INS_END_INCL;
+	}
+    }
+}
+
+/*
+ * prop_type_add({name}, {props})
+ */
+    void
+f_prop_type_add(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    prop_type_set(argvars, TRUE);
+}
+
+/*
+ * prop_type_change({name}, {props})
+ */
+    void
+f_prop_type_change(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    prop_type_set(argvars, FALSE);
+}
+
+/*
+ * prop_type_delete({name} [, {bufnr}])
+ */
+    void
+f_prop_type_delete(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    char_u	*name;
+    buf_T	*buf = NULL;
+    hashitem_T	*hi;
+
+    name = get_tv_string(&argvars[0]);
+    if (*name == NUL)
+    {
+	EMSG(_(e_invarg));
+	return;
+    }
+
+    if (argvars[1].v_type != VAR_UNKNOWN)
+    {
+	if (get_bufnr_from_arg(&argvars[1], &buf) == FAIL)
+	    return;
+    }
+
+    hi = find_prop_hi(name, buf);
+    if (hi != NULL)
+    {
+	hashtab_T	*ht;
+
+	if (buf == NULL)
+	    ht = global_proptypes;
+	else
+	    ht = buf->b_proptypes;
+	hash_remove(ht, hi);
+    }
+}
+
+/*
+ * prop_type_get({name} [, {bufnr}])
+ */
+    void
+f_prop_type_get(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    char_u *name = get_tv_string(&argvars[0]);
+
+    if (*name == NUL)
+    {
+	EMSG(_(e_invarg));
+	return;
+    }
+    if (rettv_dict_alloc(rettv) == OK)
+    {
+	proptype_T  *prop = NULL;
+	buf_T	    *buf = NULL;
+
+	if (argvars[1].v_type != VAR_UNKNOWN)
+	{
+	    if (get_bufnr_from_arg(&argvars[1], &buf) == FAIL)
+		return;
+	}
+
+	prop = find_prop(name, buf);
+	if (prop != NULL)
+	{
+	    dict_T *d = rettv->vval.v_dict;
+
+	    if (prop->pt_hl_id > 0)
+		dict_add_string(d, "highlight", syn_id2name(prop->pt_hl_id));
+	    dict_add_number(d, "priority", prop->pt_priority);
+	    dict_add_number(d, "start_incl",
+			    (prop->pt_flags & PT_FLAG_INS_START_INCL) ? 1 : 0);
+	    dict_add_number(d, "end_incl",
+			      (prop->pt_flags & PT_FLAG_INS_END_INCL) ? 1 : 0);
+	    if (buf != NULL)
+		dict_add_number(d, "bufnr", buf->b_fnum);
+	}
+    }
+}
+
+    static void
+list_types(hashtab_T *ht, list_T *l)
+{
+    long	todo;
+    hashitem_T	*hi;
+
+    todo = (long)ht->ht_used;
+    for (hi = ht->ht_array; todo > 0; ++hi)
+    {
+	if (!HASHITEM_EMPTY(hi))
+	{
+	    proptype_T *prop = HI2PT(hi);
+
+	    list_append_string(l, prop->pt_name, -1);
+	    --todo;
+	}
+    }
+}
+
+/*
+ * prop_type_list([{bufnr}])
+ */
+    void
+f_prop_type_list(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    buf_T *buf = NULL;
+
+    if (rettv_list_alloc(rettv) == OK)
+    {
+	if (argvars[0].v_type != VAR_UNKNOWN)
+	{
+	    if (get_bufnr_from_arg(&argvars[0], &buf) == FAIL)
+		return;
+	}
+	if (buf == NULL)
+	{
+	    if (global_proptypes != NULL)
+		list_types(global_proptypes, rettv->vval.v_list);
+	}
+	else if (buf->b_proptypes != NULL)
+	    list_types(buf->b_proptypes, rettv->vval.v_list);
+    }
+}
+
+/*
+ * Free all property types in "ht".
+ */
+    static void
+clear_ht_prop_types(hashtab_T *ht)
+{
+    long	todo;
+    hashitem_T	*hi;
+
+    if (ht == NULL)
+	return;
+
+    todo = (long)ht->ht_used;
+    for (hi = ht->ht_array; todo > 0; ++hi)
+    {
+	if (!HASHITEM_EMPTY(hi))
+	{
+	    proptype_T *prop = HI2PT(hi);
+
+	    vim_free(prop);
+	    --todo;
+	}
+    }
+
+    hash_clear(ht);
+    vim_free(ht);
+}
+
+#if defined(EXITFREE) || defined(PROTO)
+/*
+ * Free all property types for "buf".
+ */
+    void
+clear_global_prop_types(void)
+{
+    clear_ht_prop_types(global_proptypes);
+    global_proptypes = NULL;
+}
+#endif
+
+/*
+ * Free all property types for "buf".
+ */
+    void
+clear_buf_prop_types(buf_T *buf)
+{
+    clear_ht_prop_types(buf->b_proptypes);
+    buf->b_proptypes = NULL;
+}
+
+#endif // FEAT_TEXT_PROP