--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xft-fonts.c	Sat Nov 26 11:46:25 2005 +0000
@@ -0,0 +1,843 @@
+/* Lisp font handling implementation for X with Xft.
+
+Copyright (C) 2003 Eric Knauel and Matthias Neubauer
+Copyright (C) 2005 Eric Knauel
+Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+
+Authors:	Eric Knauel <knauel@informatik.uni-tuebingen.de>
+		Matthias Neubauer <neubauer@informatik.uni-freiburg.de>
+		Stephen J. Turnbull <stephen@xemacs.org>
+Created:	27 Oct 2003
+Updated:	05 Mar 2005 by Stephen J. Turnbull
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs 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 General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not in GNU Emacs. */
+
+/* This module provides the Lisp interface to fonts in X11, including Xft,
+   but (at least at first) not GTK+ or Qt.
+
+   It should be renamed to fonts-x.h.
+
+   Sealevel code should be in ../lwlib/lwlib-fonts.c or
+   ../lwlib/lwlib-colors.c.
+*/
+
+#include <config.h>
+#include "lisp.h"
+#include "device.h"
+#include "device-impl.h"
+#include "console-x-impl.h"
+#include "objects-x.h"
+#include "objects-x-impl.h"
+#include "hash.h"
+#include "xft-fonts.h"
+
+/* #### TO DO ####
+   . The "x-xft-*" and "x_xft_*" nomenclature is mostly redundant, especially
+     if we separate X fonts from Xft fonts, and use fontconfig more generally.
+   . We should support the most recent Xft first, old Xft libraries later.
+   . We may (think about it) wish to use fontconfig generally, even if we're
+     not using Xft.  Either way, names that are really from fontconfig should
+     use the Fc* namespace.
+   . Mule-ize this file.
+   . Separate X Font Struct ops from Xft Font ops; give precedence to Xft but
+     allow fallback to X.
+   . Push decisions about font choice, defaults, fallbacks to Lisp; if we
+     really need efficiency, can reimplement in C later.
+   . Implement symbols interned in this file in the Q* namespace.
+   . Implement FcMatrix (Lisp vector).
+   . Implement FcCharSets (Lisp chartable?  For implementation hints, see
+     FcCharSetFirstPage and FcCharSetNextPage).
+   . Implement FcConfigs.
+   DONE
+   . Fontconfig fontnames are encoded in UTF-8.
+*/
+
+Lisp_Object Qxft_font;
+Lisp_Object Qfc_patternp;
+Lisp_Object Qfc_fontsetp;
+/* Lisp_Object Qfc_result_match; */ 	/* FcResultMatch */
+Lisp_Object Qfc_result_type_mismatch;	/* FcResultTypeMismatch */
+Lisp_Object Qfc_result_no_match; 	/* FcResultNoMatch */
+Lisp_Object Qfc_result_no_id;		/* FcResultNoId */
+Lisp_Object Qfc_internal_error;
+Lisp_Object Vxlfd_font_name_regexp;	/* #### Really needed? */
+Lisp_Object Vxft_version;
+/* Lisp_Object Vfc_version; */		/* #### Should have this, too! */
+Fixnum debug_xft;		/* Set to 1 enables lots of obnoxious messages.
+				   Setting it to 2 or 3 enables even more. */
+
+/****************************************************************
+*                       FcPattern objects                       *
+****************************************************************/
+
+static void
+finalize_fc_pattern (void *header, int UNUSED (for_disksave))
+{
+  struct fc_pattern *p = (struct fc_pattern *) header;
+  if (p->fcpatPtr)
+    {
+      FcPatternDestroy (p->fcpatPtr);
+      p->fcpatPtr = 0;
+    }
+}
+
+static const struct memory_description fcpattern_description [] = {
+  /* #### nothing here, is this right?? */
+  { XD_END }
+};
+
+DEFINE_LRECORD_IMPLEMENTATION("fc-pattern", fc_pattern,
+			      0, 0, 0, finalize_fc_pattern, 0, 0,
+			      fcpattern_description,
+			      struct fc_pattern);
+
+/*
+ * Helper Functions
+ */
+static Lisp_Object make_xlfd_font_regexp (void);
+static void string_list_to_fcobjectset (Lisp_Object list, FcObjectSet *os);
+
+/* 
+   extract the C representation of the Lisp string STR and convert it
+   to the encoding used by the Fontconfig API for property and font
+   names.  I suppose that Qnative is the right encoding, the manual
+   doesn't say much about this topic.  This functions assumes that STR
+   is a Lisp string.
+*/
+#define extract_fcapi_string(str) \
+  ((FcChar8 *) NEW_LISP_STRING_TO_EXTERNAL ((str), Qnative))
+
+/* fontconfig assumes that objects (property names) are statically allocated,
+   and you will get bizarre results if you pass Lisp string data or strings
+   allocated on the stack as objects.  fontconfig _does_ copy values, so we
+   (I hope) don't have to worry about that member.
+
+   Probably these functions don't get called so often that the memory leak
+   due to strdup'ing every time we add a property would matter, but XEmacs
+   _is_ a long-running process.  So we hash them.
+
+   I suspect that using symbol names or even keywords does not provide
+   assurance that the string won't move in memory.  So we hash them
+   ourselves; hash.c hashtables do not interpret the value pointers. */
+static FcChar8 *fc_standard_properties[] = {
+  "antialias", "aspect", "autohint", "charset", "dpi", "family", "file",
+  "foundry", "ftface", "globaladvance", "hinting", "index", "lang",
+  "minspace", "outline", "pixelsize", "rasterizer", "rgba", "scalable",
+  "scale", "size", "slant", "spacing", "style", "verticallayout", "weight",
+  /* obsolete after Xft v. 1 */
+  "charwidth", "charheight", "core", "encoding", "render"
+};
+
+static struct hash_table *fc_property_name_hash_table;
+
+/* #### Maybe fc_intern should be exposed to LISP?  The idea is that
+   fc-pattern-add could warn or error if the property isn't interned. */
+
+static FcChar8 *
+fc_intern (Lisp_Object property)
+{
+  const void *dummy;
+  FcChar8 *prop = extract_fcapi_string (property);
+  const void *val = gethash (prop, fc_property_name_hash_table, &dummy);
+
+  /* extract_fcapi_string returns something alloca'd
+     so we can just drop the old value of prop on the floor */
+  if (val)
+    prop = (FcChar8 *) val;
+  else
+    {
+      prop = FcStrCopy (prop);
+      puthash (prop, NULL, fc_property_name_hash_table);
+    }
+  return prop;
+}
+
+DEFUN("fc-pattern-p", Ffc_pattern_p, 1, 1, 0, /*
+Returns t if OBJECT is of type fc-pattern, nil otherwise.
+*/
+      (object))
+{
+  return FCPATTERNP(object) ? Qt : Qnil;
+}
+
+DEFUN("fc-pattern-create", Ffc_pattern_create, 0, 0, 0, /* 
+Return a new, empty fc-pattern object.
+*/
+      ())
+{
+  fc_pattern *fcpat =
+    ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern);
+
+  fcpat->fcpatPtr = FcPatternCreate();
+  return wrap_fcpattern(fcpat);
+}
+
+DEFUN("fc-name-parse", Ffc_name_parse, 1, 1, 0, /*
+Parse an Fc font name and return its representation as a fc pattern object.
+*/
+      (name))
+{
+  struct fc_pattern *fcpat =
+    ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern);
+
+  CHECK_STRING(name);		/* #### MEMORY LEAK!!  maybe not ... */
+
+  fcpat->fcpatPtr = FcNameParse (extract_fcapi_string (name));
+  return wrap_fcpattern(fcpat);
+}
+
+/* #### Ga-a-ack!  Xft's similar function is actually a different API.
+   We provide both. */
+DEFUN("fc-name-unparse", Ffc_name_unparse, 1, 1, 0, /*
+Unparse an fc pattern object to a string.
+*/
+      (pattern))
+{
+  CHECK_FCPATTERN(pattern);
+  {
+  FcChar8 *temp = FcNameUnparse(XFCPATTERN_PTR(pattern));
+  Lisp_Object res = build_ext_string (temp, Qxft_font_name_encoding);
+  free (temp);
+  return res;
+  }
+}
+
+#if 0
+/* #### This seems to not work? */
+DEFUN("xft-name-unparse", Fxft_name_unparse, 1, 1, 0, /*
+Unparse an fc pattern object to a string (using the Xft API).
+*/
+      (pattern))
+{
+  char temp[FCSTRLEN];
+  Bool res;
+
+  CHECK_FCPATTERN(pattern);
+  res = XftNameUnparse(XFCPATTERN_PTR(pattern), temp, FCSTRLEN-1);
+  return res ? build_ext_string (temp, Qxft_font_name_encoding) : Qnil;
+}
+#endif
+
+DEFUN("fc-pattern-duplicate", Ffc_pattern_duplicate, 1, 1, 0, /* 
+Make a copy of the fc pattern object PATTERN and return it.
+*/
+      (pattern))
+{
+  struct fc_pattern *copy = NULL;
+  CHECK_FCPATTERN(pattern);
+
+  copy = ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern);
+  copy->fcpatPtr = FcPatternDuplicate(XFCPATTERN_PTR(pattern));
+  return wrap_fcpattern(copy);
+}
+
+DEFUN("fc-pattern-add", Ffc_pattern_add, 3, 3, 0, /*
+Add attributes to the pattern object PATTERN.  PROPERTY is a string naming
+the attribute to add, VALUE the value for this attribute.
+
+VALUE may be a string, integer, float, or symbol, in which case the value
+will be added as an FcChar8[], int, double, or FcBool respectively.
+*/
+      (pattern, property, value))
+{
+  Bool res = 0;
+  Extbyte *obj;
+  FcPattern *fcpat;
+
+  CHECK_FCPATTERN(pattern);
+  CHECK_STRING(property);
+
+  obj = fc_intern (property);
+  fcpat = XFCPATTERN_PTR (pattern);
+
+  if (STRINGP(value)) 
+    {
+      FcChar8 *str = (FcChar8 *) extract_fcapi_string (value);
+      res = FcPatternAddString (fcpat, obj, str);
+    }
+  else if (INTP(value)) 
+    {
+      res = FcPatternAddInteger (fcpat, obj, XINT(value));
+    }
+  else if (FLOATP(value)) 
+    {
+      res = FcPatternAddDouble (fcpat, obj, (double) XFLOAT_DATA(value));
+    }
+  else if (SYMBOLP(value)) 
+    {
+      res = FcPatternAddBool (fcpat, obj, !NILP(value));
+    }
+  /* else ... maybe we should wta here? */
+
+  return res ? Qt : Qnil;
+}
+
+DEFUN("fc-pattern-del", Ffc_pattern_del, 2, 2, 0, /*
+Remove attribute PROPERTY from fc pattern object OBJECT.
+*/
+      (pattern, property))
+{
+  Bool res;
+
+  CHECK_FCPATTERN(pattern);
+  CHECK_STRING(property);
+
+  res = FcPatternDel(XFCPATTERN_PTR(pattern), 
+		     extract_fcapi_string (property));
+  return res ? Qt : Qnil;
+}
+
+/* Generic interface to FcPatternGet()
+ * Don't support the losing symbol-for-property interface.
+ */
+DEFUN("fc-pattern-get", Ffc_pattern_get, 2, 4, 0, /*
+From PATTERN, extract PROPERTY for the ID'th member, of type TYPE.
+
+PATTERN is an Xft (fontconfig) pattern object.
+PROPERTY is a string naming an fontconfig font property.
+Optional ID is a nonnegative integer indexing the list of values for PROPERTY
+  stored in PATTERN, defaulting to 0 (the first value).
+Optional TYPE is a symbol, one of 'string, 'boolean, 'integer, 'float,
+  'double, 'matrix, 'charset, or 'void, corresponding to the FcValue types.
+  ('float is an alias for 'double).
+
+The Lisp types returned will conform to TYPE:
+  string		string
+  boolean		`t' or `nil'
+  integer		integer
+  double (float)	float
+  matrix		not implemented
+  charset		not implemented
+  void			not implemented
+
+Symbols with names of the form "fc-result-DESCRIPTION" are returned when
+the desired value is not available.  These are
+
+  fc-result-type-mismatch       the value found has an unexpected type
+  fc-result-no-match            there is no such attribute
+  fc-result-no-id               there is no value for the requested ID
+
+The types of the following standard properties are predefined by fontconfig.
+The symbol 'fc-result-type-mismatch will be returned if the object exists but
+TYPE does not match the predefined type.  It is best not to specify a type
+for predefined properties, as a mistake here ensures error returns on the
+correct type.
+
+Each standard property has a convenience accessor defined in fontconfig.el,
+named in the form "fc-pattern-get-PROPERTY".  The convenience functions are
+preferred to `fc-pattern-get' since a typo in the string naming a property
+will result in a silent null return, while a typo in a function name will
+usually result in a compiler or runtime \"not fboundp\" error.  You may use
+`defsubst' to define convenience functions for non-standard properties.
+
+family         String  Font family name 
+style          String  Font style. Overrides weight and slant 
+slant          Int     Italic, oblique or roman 
+weight         Int     Light, medium, demibold, bold or black 
+size           Double  Point size 
+aspect         Double  Stretches glyphs horizontally before hinting 
+pixelsize      Double  Pixel size 
+spacing        Int     Proportional, monospace or charcell 
+foundry        String  Font foundry name 
+antialias      Bool    Whether glyphs can be antialiased 
+hinting        Bool    Whether the rasterizer should use hinting 
+verticallayout Bool    Use vertical layout 
+autohint       Bool    Use autohinter instead of normal hinter 
+globaladvance  Bool    Use font global advance data 
+file           String  The filename holding the font 
+index          Int     The index of the font within the file 
+ftface         FT_Face Use the specified FreeType face object 
+rasterizer     String  Which rasterizer is in use 
+outline        Bool    Whether the glyphs are outlines 
+scalable       Bool    Whether glyphs can be scaled 
+scale          Double  Scale factor for point->pixel conversions 
+dpi            Double  Target dots per inch 
+rgba           Int     unknown, rgb, bgr, vrgb, vbgr, none - subpixel geometry 
+minspace       Bool    Eliminate leading from line spacing 
+charset        CharSet Unicode chars encoded by the font 
+lang           String  List of RFC-3066-style languages this font supports
+
+The FT_Face, Matrix, CharSet types are unimplemented, so the corresponding
+properties are not accessible from Lisp at this time.  If the value of a
+property returned has type FT_Face, FcCharSet, or FcMatrix,
+`fc-result-type-mismatch' is returned.
+
+The following properties which were standard in Xft v.1 are obsolete in
+Xft v.2:  encoding, charwidth, charheight, core, and render. */
+      (pattern, property, id, type))
+{
+  FcChar8 *fc_property;		/* UExtbyte * */
+  FcResult fc_result;
+  FcValue fc_value;
+
+  /*
+    process arguments
+  */
+  CHECK_FCPATTERN (pattern);
+
+#if 0
+  /* Don't support the losing symbol-for-property interface. */
+  property = SYMBOLP (property) ? symbol_name (XSYMBOL (property)) : property;
+#endif
+  if (STRINGP (property))
+    {
+      fc_property = (FcChar8 *) extract_fcapi_string (property);
+    }
+  else
+    {
+      /* if we allow symbols, this would need to be
+	 list3 (Qlambda, list1 (Qobject),
+		  list3 (Qor, list2 (Qstringp, Qobject),
+			      list2 (Qsymbolp, Qobject)))
+	 or something like that? */
+      dead_wrong_type_argument (Qstringp, property);
+    }
+
+  if (!NILP (id)) CHECK_NATNUM (id);
+  if (!NILP (type)) CHECK_SYMBOL (type);
+
+  /* get property */
+  fc_result = FcPatternGet (XFCPATTERN_PTR (pattern),
+			    fc_property,
+			    NILP (id) ? 0 : XINT(id),
+			    &fc_value);
+
+  switch (fc_result)
+    {
+    case FcResultMatch:
+      /* wrap it and return */
+      switch (fc_value.type)
+	{
+	case FcTypeInteger:
+	  return ((!NILP (type) && !EQ (type, Qinteger))
+		  ? Qfc_result_type_mismatch : make_int (fc_value.u.i));
+	case FcTypeDouble:
+	  return ((!NILP (type) && !EQ (type, intern ("double"))
+		   && !EQ (type, Qfloat))
+		  ? Qfc_result_type_mismatch : make_float (fc_value.u.d));
+	case FcTypeString:
+	  return ((!NILP (type) && !EQ (type, Qstring))
+		  ? Qfc_result_type_mismatch
+		  : build_ext_string (fc_value.u.s, Qxft_font_name_encoding));
+	case FcTypeBool:
+	  return ((!NILP (type) && !EQ (type, Qboolean))
+		  ? Qfc_result_type_mismatch : fc_value.u.b ? Qt : Qnil);
+	case FcTypeMatrix:
+	  return Qfc_result_type_mismatch;
+	  /* #### unimplemented
+	  return ((!NILP (type) && !EQ (type, intern ("matrix")))
+		  ? Qfc_result_type_mismatch : make_int (fc_value.u.m));
+	  */
+	case FcTypeCharSet:
+	  return Qfc_result_type_mismatch;
+	  /* #### unimplemented
+	  return ((!NILP (type) && !EQ (type, intern ("charset")))
+		  ? Qfc_result_type_mismatch : make_int (fc_value.u.c));
+	  */
+	}
+    case FcResultTypeMismatch:
+      return Qfc_result_type_mismatch;
+    case FcResultNoMatch:
+      return Qfc_result_no_match;
+    case FcResultNoId:
+      return Qfc_result_no_id;
+    default:
+      return Qfc_internal_error;
+    }
+}
+
+#if 0
+/* #### delete this after some testing!! don't forget the DEFSUBR */
+/* #### This is a big mistake, no? --- crap, there's no implicit finalizer */
+DEFUN("fc-pattern-destroy", Ffc_pattern_destroy, 1, 1, 0, /*
+Explicitly deallocate a fc pattern object PATTERN. */
+      (pattern))
+{
+  CHECK_FCPATTERN(pattern); 
+
+  /* paranoia strikes deep */
+  if (XFCPATTERN_PTR(pattern))
+    {
+      FcPatternDestroy(XFCPATTERN_PTR(pattern));
+      XFCPATTERN_PTR(pattern) = 0;
+    }
+  return Qnil;
+}
+#endif
+
+DEFUN("fc-font-match", Ffc_font_match, 2, 2, 0, /*
+Return the font on DEVICE that most closely matches PATTERN.
+
+DEVICE is an X11 device.
+PATTERN is a fontconfig pattern object.
+Returns a fontconfig pattern object representing the closest match to the
+given pattern, or an error code.  Possible error codes are
+`fc-result-no-match' and `fc-result-no-id'. */
+      (device, pattern))
+{
+  Display *dpy;
+  FcResult res;
+
+  struct fc_pattern *res_fcpat =
+    ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern);
+  CHECK_FCPATTERN(pattern);	/* #### MEMORY LEAKS!!! */
+  if (NILP(device))
+    return Qnil;
+  CHECK_X_DEVICE(device);
+  if (!DEVICE_LIVE_P(XDEVICE(device)))
+    return Qnil;
+
+  dpy = DEVICE_X_DISPLAY(XDEVICE(device));
+  /* More Xft vs fontconfig brain damage? */
+  res_fcpat->fcpatPtr = XftFontMatch(dpy, DefaultScreen (dpy),
+				     XFCPATTERN_PTR(pattern), &res);
+  
+  if (res_fcpat->fcpatPtr == NULL)
+    switch (res) {
+    case FcResultNoMatch:
+      return Qfc_result_no_match;
+    case FcResultNoId:
+      return Qfc_result_no_id;
+    default:
+      return Qfc_internal_error;
+    }
+  else
+    return wrap_fcpattern(res_fcpat);
+}
+
+/* NOTE NOTE NOTE This function destroys the FcFontSet passed to it. */
+static Lisp_Object
+fontset_to_list (FcFontSet *fontset)
+{
+  int idx;
+  Lisp_Object fontlist = Qnil;
+  fc_pattern *fcpat;
+
+  /* #### improve this error message */
+  if (!fontset)
+    Fsignal (Qinvalid_state,
+	     list1 (build_string ("failed to create FcFontSet")));
+  for (idx = 0; idx < fontset->nfont; ++idx)
+    {
+      fcpat = 
+	ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern);
+      fcpat->fcpatPtr = FcPatternDuplicate (fontset->fonts[idx]);
+      fontlist = Fcons (wrap_fcpattern(fcpat), fontlist);
+    }
+  FcFontSetDestroy (fontset);
+  return fontlist;
+}
+
+/* #### fix this name to correspond to Ben's new nomenclature */
+DEFUN("fc-list-fonts-pattern-objects", Ffc_list_fonts_pattern_objects,
+      3, 3, 0, /*
+Return a list of fonts on DEVICE that match PATTERN for PROPERTIES.
+Each font is represented by a fontconfig pattern object.
+
+DEVICE is an X11 device.
+PATTERN is a fontconfig pattern to be matched.
+PROPERTIES is a list of property names (strings) that should match.
+
+#### DEVICE is unused, ignored, and may be removed if it's not needed to
+match other font-listing APIs. */
+      (UNUSED (device), pattern, properties))
+{
+  FcObjectSet *os;
+  FcFontSet *fontset;
+
+  CHECK_FCPATTERN (pattern);
+  CHECK_LIST (properties);
+
+  os = FcObjectSetCreate ();
+  string_list_to_fcobjectset (properties, os);
+  /* #### why don't we need to do the "usual substitutions"? */
+  fontset = FcFontList (NULL, XFCPATTERN_PTR (pattern), os);
+  FcObjectSetDestroy (os);
+
+  return fontset_to_list (fontset);
+
+}
+
+/* #### maybe this can/should be folded into fc-list-fonts-pattern-objects? */
+DEFUN("fc-font-sort", Ffc_font_sort, 2, 4, 0, /*
+Return a list of all fonts sorted by proximity to PATTERN.
+Each font is represented by a fontconfig pattern object.
+
+DEVICE is an X11 device.
+PATTERN is a fontconfig pattern to be matched.
+Optional argument TRIM, if non-nil, means to trim trailing fonts that do not
+contribute new characters to the union repertoire.
+
+#### Optional argument NOSUB, if non-nil, suppresses some of the usual
+property substitutions.  DON'T USE THIS in production code, it is intended
+for exploring behavior of fontconfig and will be removed when this code is
+stable.
+
+#### DEVICE is unused, ignored, and may be removed if it's not needed to
+match other font-listing APIs. */
+      (UNUSED (device), pattern, trim, nosub))
+{
+  CHECK_FCPATTERN (pattern);
+
+  {
+    FcConfig *fcc = FcConfigGetCurrent();
+    FcFontSet *fontset;
+    FcPattern *p = XFCPATTERN_PTR (pattern);
+    FcResult fcresult;
+
+    if (NILP(nosub))		/* #### temporary debug hack */
+      FcDefaultSubstitute (p);
+    FcConfigSubstitute (fcc, p, FcMatchPattern);
+    fontset = FcFontSort (fcc, p, !NILP(trim), NULL, &fcresult);
+
+    return fontset_to_list (fontset);
+  }
+}
+
+/* #### this actually is an Xft function, should split those out
+   or get rid of them entirely? */
+/* #### be consistent about argument order. */
+DEFUN("fc-font-real-pattern", Ffc_font_real_pattern, 2, 2, 0, /*
+Temporarily open FONTNAME (a string) and return the actual
+fc pattern matched by the Fc library.	*/
+      (fontname, xdevice))
+{
+  FcPattern *copy;
+  Display *dpy;
+  XftFont *font;
+  struct fc_pattern *fcpat =
+    ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern);
+
+  CHECK_STRING (fontname);	/* #### MEMORY LEAK?!  maybe not ... */
+  if (NILP(xdevice))
+    return Qnil;
+  CHECK_X_DEVICE (xdevice);
+  if (!DEVICE_LIVE_P(XDEVICE(xdevice)))
+    return Qnil;
+
+  /* #### these gymnastics should be unnecessary, just use FcFontMatch */
+  dpy = DEVICE_X_DISPLAY (XDEVICE (xdevice));
+  font = XftFontOpenName (dpy, DefaultScreen(dpy),
+			  extract_fcapi_string (fontname));
+  if (font == NULL)
+    return Qnil;
+  copy = FcPatternDuplicate(font->pattern);
+  XftFontClose(dpy, font);  
+  if (copy == NULL)
+    return Qnil;
+  fcpat->fcpatPtr = copy;
+  return wrap_fcpattern(fcpat);
+}
+
+DEFUN("xlfd-font-name-p", Fxlfd_font_name_p, 1, 1, 0, /*
+Check whether the string FONTNAME is a XLFD font name. */
+      (fontname))
+{
+  CHECK_STRING(fontname);
+  /* #### should bind `case-fold-search' here? */
+  return Fstring_match(Vxlfd_font_name_regexp, fontname, Qnil, Qnil);
+}
+
+/* FcPatternPrint: there is no point in having wrappers fc-pattern-print,
+   Ffc_pattern_print since this function prints to stdout. */
+
+/* Initialization of xft-fonts */
+
+#define XE_XLFD_SEPARATOR	"-"
+      /* XLFD specifies ISO 8859-1 encoding, but we can't handle non-ASCII
+	 in Mule when this function is called.  So use HPC. */
+#if 0
+#define XE_XLFD_PREFIX		"\\(\\+[\040-\176\240-\377]*\\)?-"
+#define XE_XLFD_OPT_TEXT	"\\([\040-\044\046-\176\240-\377]*\\)"
+#define XE_XLFD_TEXT		"\\([\040-\044\046-\176\240-\377]+\\)"
+#else
+#define XE_XLFD_PREFIX		"\\(\\+[\040-\176]*\\)?-"
+#define XE_XLFD_OPT_TEXT	"\\([^-]*\\)"
+#define XE_XLFD_TEXT		"\\([^-]+\\)"
+#endif
+
+#define XE_XLFD_SLANT		"\\([0-9ior?*][iot]?\\)"
+#define XE_XLFD_SPACING		"\\([cmp?*]\\)"
+      /* Hyphen as minus conflicts with use as separator. */
+#define XE_XLFD_OPT_NEGATE      "~?"
+#define XE_XLFD_NUMBER		"\\([0-9?*]+\\)"
+#define XE_XLFD_PSIZE		"\\([0-9?*]+\\|\\[[ 0-9+~.e?*]+\\]\\)"
+  
+/* Call this only from the init code
+   #### This is really horrible, let's get rid of it, please. */
+static Lisp_Object
+make_xlfd_font_regexp (void)
+{
+  struct gcpro gcpro1;
+  unsigned i;
+  Lisp_Object reg = Qnil;
+  const Extbyte *re[] = 	/* #### This could just be catenated by
+				   cpp and passed to build_ext_string. */
+    {
+      /* Regular expression matching XLFDs as defined by XLFD v. 1.5.
+	 Matches must be case-insensitive.
+	 PSIZE is a pixel or point size, which may be a "matrix".  The
+	 syntax of a matrix is not checked, just some lexical properties.
+	 AFAICT none of the TEXT fields except adstyle is optional.
+
+	 NB. It should not be a problem if this matches "too much", since
+	 an "old" server will simply not be able to find a matching font. */
+      "\\`",
+      XE_XLFD_PREFIX,		/* prefix */
+      XE_XLFD_TEXT,		/* foundry */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_TEXT,		/* family */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_TEXT,		/* weight */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_SLANT,		/* slant */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_TEXT,		/* swidth */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_OPT_TEXT,		/* adstyle */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_PSIZE,		/* pixelsize */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_PSIZE,		/* pointsize */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_NUMBER,		/* resx */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_NUMBER,		/* resy */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_SPACING,		/* spacing */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_OPT_NEGATE,	/* avgwidth */
+      XE_XLFD_NUMBER,
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_TEXT,		/* registry */
+      XE_XLFD_SEPARATOR,
+      XE_XLFD_TEXT,		/* encoding */
+      "\\'"
+    };
+  
+  GCPRO1 (reg);  
+  for (i = 0; i < sizeof(re)/sizeof(Extbyte *); i++)
+    {
+      /* #### Currently this is Host Portable Coding, not ISO 8859-1. */
+      reg = concat2(reg, build_ext_string (re[i], Qx_font_name_encoding));
+    }
+
+  RETURN_UNGCPRO (reg);
+}
+#undef XE_XLFD_SEPARATOR
+#undef XE_XLFD_PREFIX
+#undef XE_XLFD_OPT_TEXT
+#undef XE_XLFD_TEXT
+#undef XE_XLFD_OPT_SLANT
+#undef XE_XLFD_OPT_SPACING
+#undef XE_XLFD_OPT_NEGATE
+#undef XE_XLFD_NUMBER
+#undef XE_XLFD_PSIZE
+
+#define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \
+		   ? ((unsigned long) (x)) : ((unsigned long) (y)))
+
+static void 
+string_list_to_fcobjectset (Lisp_Object list, FcObjectSet *os)
+{
+  EXTERNAL_LIST_LOOP_2 (elt, list)
+    {
+      FcChar8 *s;
+
+      CHECK_STRING (elt);
+      s = fc_intern (elt);
+      fprintf (stderr, "%s\n", s);
+      FcObjectSetAdd (os, s);
+    }
+}
+
+void
+syms_of_xft_fonts (void)
+{
+  INIT_LRECORD_IMPLEMENTATION(fc_pattern);
+
+  DEFSYMBOL_MULTIWORD_PREDICATE(Qfc_patternp);
+
+  DEFSYMBOL(Qfc_result_type_mismatch);
+  DEFSYMBOL(Qfc_result_no_match);
+  DEFSYMBOL(Qfc_result_no_id);
+  DEFSYMBOL(Qfc_internal_error);
+  DEFSYMBOL(Qxft_font);
+
+  DEFSUBR(Ffc_pattern_p);
+  DEFSUBR(Ffc_pattern_create);
+  DEFSUBR(Ffc_name_parse);
+  DEFSUBR(Ffc_name_unparse);
+  DEFSUBR(Fxft_name_unparse);	/* URK! */
+  DEFSUBR(Ffc_pattern_duplicate);
+  DEFSUBR(Ffc_pattern_add);
+  DEFSUBR(Ffc_pattern_del);
+  DEFSUBR(Ffc_pattern_get);
+#if 0
+  DEFSUBR(Ffc_pattern_destroy);
+#endif
+  DEFSUBR(Ffc_list_fonts_pattern_objects);
+  DEFSUBR(Ffc_font_sort);
+  DEFSUBR(Ffc_font_match);
+  DEFSUBR(Ffc_font_real_pattern);
+  DEFSUBR(Fxlfd_font_name_p);
+}
+
+void
+vars_of_xft_fonts (void)
+{
+  /* #### I know, but the right fix is use the generic debug facility. */
+  DEFVAR_INT ("xft-debug-level", &debug_xft /*
+Level of debugging messages to issue to stderr for Xft.
+A nonnegative integer.  Set to 0 to suppress all warnings.
+Default is 1 to ensure a minimum of debugging output at initialization.
+Higher levels give even more information.
+*/ );
+  debug_xft = 1;
+
+  DEFVAR_LISP("xft-version", &Vxft_version /*
+The major version number of the Xft library being used.
+*/ );
+  Vxft_version = make_int(XFT_VERSION);
+
+  Fprovide (intern ("xft"));
+}
+
+void
+complex_vars_of_xft_fonts (void)
+{
+  DEFVAR_LISP("xft-xlfd-font-regexp", &Vxlfd_font_name_regexp /*
+The regular expression used to match XLFD font names. */			       
+	      );
+  Vxlfd_font_name_regexp = make_xlfd_font_regexp();
+}
+
+void
+reinit_vars_of_xft_fonts (void)
+{
+  int i, size = (int) countof (fc_standard_properties);
+  
+  FcInit ();
+
+  fc_property_name_hash_table = make_string_hash_table (size);
+  for (i = 0; i < size; ++i)
+    puthash (fc_standard_properties[i], NULL, fc_property_name_hash_table);
+}
+