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RE: address@hidden: Detached minibuffer cropped text]
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From: |
Marshall, Simon |
|
Subject: |
RE: address@hidden: Detached minibuffer cropped text] |
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Date: |
Thu, 10 Aug 2006 13:18:06 +0100 |
> Here's yet another quirk that may help track down the
> problem. From the original bug report, if I do:
>
> xrdb -load
> ^D
> src/emacs -Q --font=9x15 --eval '(setq minibuffer-frame-alist
> (quote ((width . 80) (height . 1))) initial-frame-alist
> (quote ((minibuffer))))'
>
> Then the detached minibuffer has insufficient space for the
> trailing parts of 9x15 characters such as "y". Also, there
> are a few pixels to the right of the right fringe.
>
> If I put WM focus in the detached minibuffer and do:
>
> M-x set-frame-font RET 9x15bold RET
>
> Then Emacs resizes the minibuffer frame to have sufficient
> height for 9x15 characters and removes the extra pixels to
> the right of the right fringe. The same thing happens if the
> default font is 9x15bold and then I change it to 9x15.
>
> This suggests to me that it is somehow a problem within Emacs
> - it does not get it right on startup but it does get it
> right if the font is changed while running.
>
> How can I help you track the cause of this? Simon.
Ok, everyone's had enough of a chance to respond! ;-)
Now I've got a gcc build, I tried to debug this myself, concentrating on the
frame height issue. I started emacs with these breakpoints:
Breakpoint 5, Fx_create_frame (parms=5003429) at xfns.c:3161
Breakpoint 3, x_set_font (f=0x5bb200, arg=5495731, oldval=4687873) at
frame.c:3067
And then continued until the 3rd time we stop in Fx_create_frame(), when
we're creating the minibuffer frame:
Breakpoint 5, Fx_create_frame (parms=10327149) at xfns.c:3161
(gdb) where
#0 Fx_create_frame (parms=10327149) at xfns.c:3161
#1 0x0024aa9c in Ffuncall (nargs=2, args=0xffbecc00) at eval.c:2982
#2 0x002a2cb0 in Fbyte_code (bytestr=3433907, vector=3433924, maxdepth=40)
at bytecode.c:679
#3 0x0024b5b0 in funcall_lambda (fun=3433860, nargs=1,
arg_vector=0xffbececc) at eval.c:3169
#4 0x0024ad28 in Ffuncall (nargs=2, args=0xffbecec8) at eval.c:3028
#5 0x002a2cb0 in Fbyte_code (bytestr=3675779, vector=3675796, maxdepth=24)
at bytecode.c:679
#6 0x0024b5b0 in funcall_lambda (fun=3675732, nargs=1,
arg_vector=0xffbed194) at eval.c:3169
#7 0x0024ad28 in Ffuncall (nargs=2, args=0xffbed190) at eval.c:3028
#8 0x002a2cb0 in Fbyte_code (bytestr=3674875, vector=3674892, maxdepth=24)
at bytecode.c:679
#9 0x0024b5b0 in funcall_lambda (fun=3674844, nargs=1,
arg_vector=0xffbed45c) at eval.c:3169
#10 0x0024ad28 in Ffuncall (nargs=2, args=0xffbed458) at eval.c:3028
#11 0x002a2cb0 in Fbyte_code (bytestr=3674411, vector=3674428, maxdepth=64)
at bytecode.c:679
#12 0x0024b5b0 in funcall_lambda (fun=3674380, nargs=0,
arg_vector=0xffbed734) at eval.c:3169
#13 0x0024ad28 in Ffuncall (nargs=1, args=0xffbed730) at eval.c:3028
#14 0x002a2cb0 in Fbyte_code (bytestr=3785067, vector=3785092, maxdepth=56)
at bytecode.c:679
#15 0x0024929c in Feval (form=3785053) at eval.c:2319
#16 0x00244428 in Fprogn (args=3785045) at eval.c:435
#17 0x0024bf68 in unbind_to (count=2, value=4687873) at eval.c:3337
#18 0x002a2d9c in Fbyte_code (bytestr=3784739, vector=3784756, maxdepth=48)
at bytecode.c:701
#19 0x0024b5b0 in funcall_lambda (fun=3784716, nargs=0,
arg_vector=0xffbedd28) at eval.c:3169
#20 0x0024b094 in apply_lambda (fun=3784716, args=4687873, eval_flag=1) at
eval.c:3093
#21 0x00249438 in Feval (form=6856773) at eval.c:2355
#22 0x00178e20 in top_level_2 () at keyboard.c:1335
#23 0x00246eac in internal_condition_case (bfun=0x178e08 <top_level_2>,
handlers=4752009, hfun=0x17872c <cmd_error>) at eval.c:1469
#24 0x00178e80 in top_level_1 () at keyboard.c:1343
#25 0x0024663c in internal_catch (tag=4746241, func=0x178e34 <top_level_1>,
arg=4687873) at eval.c:1210
#26 0x00178d18 in command_loop () at keyboard.c:1300
#27 0x00178278 in recursive_edit_1 () at keyboard.c:1003
#28 0x001784d8 in Frecursive_edit () at keyboard.c:1064
#29 0x0017609c in main (argc=3, argv=0xffbee44c) at emacs.c:1794
Lisp Backtrace:
"x-create-frame" (0x9d953d)
"x-create-frame-with-faces" (0x9d962d)
"make-frame" (0x9d962d)
"make-initial-minibuffer-frame" (0x478801)
"frame-notice-user-settings" (0x72d6a1)
"byte-code" (0x39c16b)
"normal-top-level" (0x0)
(gdb) list
3156 /* Extract the window parameters from the supplied values
3157 that are needed to determine window geometry. */
3158 {
3159 Lisp_Object font;
3160
3161 -> font = x_get_arg (dpyinfo, parms, Qfont, "font", "Font",
RES_TYPE_STRING);
3162
3163 BLOCK_INPUT;
3164 /* First, try whatever font the caller has specified. */
3165 if (STRINGP (font))
(gdb)
stepping over the call of x_get_arg(), font gets set to:
(gdb) p font
$27 = 8136051
(gdb) pr
"9x15bold"
(gdb)
so far, so good. stepping further, we get to:
3166 {
3167 tem = Fquery_fontset (font, Qnil);
3168 if (STRINGP (tem))
3169 font = x_new_fontset (f, SDATA (tem));
3170 else
3171 -> font = x_new_font (f, SDATA (font));
3172 }
3173
3174 /* Try out a font which we hope has bold and italic variations.
*/
3175 if (!STRINGP (font))
if i step in, i get to:
x_new_font (f=0xb89200, fontname=0x88f828 "9x15bold") at xterm.c:7857
(gdb) list
7852 x_new_font (f, fontname)
7853 struct frame *f;
7854 register char *fontname;
7855 {
7856 struct font_info *fontp
7857 -> = FS_LOAD_FONT (f, 0, fontname, -1);
7858
7859 if (!fontp)
7860 return Qnil;
7861
(gdb)
stepping in further, we get to:
#0 x_load_font (f=0xb89200, fontname=0x88f828 "9x15bold", size=0) at
xterm.c:9814
#1 0x0015f4f4 in fs_load_font (f=0xb89200, c=0, fontname=0x88f828
"9x15bold", id=-1, face=0x0) at fontset.c:700
#2 0x0013cd40 in x_new_font (f=0xb89200, fontname=0x9d930d "G\210\001") at
xterm.c:7857
#3 0x0014c3c8 in Fx_create_frame (parms=10327149) at xfns.c:3171
...
and then stepping in again:
#0 x_list_fonts (f=0xb86200, pattern=10804675, size=0, maxnames=1) at
xterm.c:9427
#1 0x0014113c in x_load_font (f=0xb86200, fontname=0x88f828 "9x15bold",
size=0) at xterm.c:9814
#2 0x0015f4f4 in fs_load_font (f=0xb86200, c=0, fontname=0x88f828
"9x15bold", id=-1, face=0x0) at fontset.c:700
#3 0x0013cd40 in x_new_font (f=0xb86200, fontname=0xa4ddc3
"\b\377\377\377\377") at xterm.c:7857
#4 0x0014c3c8 in Fx_create_frame (parms=10327141) at xfns.c:3171
...
(gdb) p pattern
$33 = 10804675
(gdb) pr
"9x15bold"
(gdb)
where we are trying to get a list of fonts matching pattern. we eventually
start the loop:
pattern = XCAR (patterns);
/* See if we cached the result for this particular query.
The cache is an alist of the form:
((((PATTERN . MAXNAMES) . SCALABLE) (FONTNAME . WIDTH) ...) ...)
*/
tem = XCDR (dpyinfo->name_list_element);
-> key = Fcons (Fcons (pattern, make_number (maxnames)),
allow_auto_scaled_font ? Qt : Qnil);
list = Fassoc (key, tem);
if (!NILP (list))
{
list = Fcdr_safe (list);
/* We have a cashed list. Don't have to get the list again. */
goto label_cached;
}
(gdb) p pattern
$39 = 10804675
(gdb) pr
"9x15bold"
(gdb) p tem
$36 = 8022645
(gdb) pr
(((("-misc-fixed-medium-r-normal--13-100-100-100-c-80-iso8859-1" . 1))
("-Misc-Fixed-Medium-R-Normal--13-120-75-75-C-80-ISO8859-1"))
((("-misc-fixed-bold-r-normal--13-100-100-100-c-80-iso8859-1" . 1))
("-Misc-Fixed-Bold-R-Normal--13-120-75-75-C-80-ISO8859-1"))
((("-misc-fixed-*-ISO8859-1" . 100) . t)
("-misc-fixed-medium-r-semicondensed--0-0-75-75-c-0-iso8859-1")
("-misc-fixed-medium-r-normal--0-0-75-75-c-0-iso8859-1")
("-misc-fixed-medium-o-semicondensed--0-0-75-75-c-0-iso8859-1")
("-misc-fixed-medium-o-normal--0-0-75-75-c-0-iso8859-1")
("-misc-fixed-bold-r-semicondensed--0-0-75-75-c-0-iso8859-1")
("-misc-fixed-bold-r-normal--0-0-75-75-c-0-iso8859-1")
("-misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso8859-1")
("-misc-fixed-medium-r-semicondensed--13-100-100-100-c-60-iso8859-1")
("-misc-fixed-medium-r-semicondensed--12-90-100-100-c-60-iso8859-1")
("-misc-fixed-medium-r-semicondensed--12-110-75-75-c-60-iso8859-1")
("-misc-fixed-medium-r-normal--9-90-75-75-c-60-iso8859-1")
("-misc-fixed-medium-r-normal--9-80-100-100-c-60-iso8859-1")
("-misc-fixed-medium-r-normal--8-80-75-75-c-50-iso8859-1")
("-misc-fixed-medium-r-normal--8-60-100-100-c-50-iso8859-1")
("-misc-fixed-medium-r-normal--7-70-75-75-c-50-iso8859-1")
("-misc-fixed-medium-r-normal--7-50-100-100-c-50-iso8859-1")
("-misc-fixed-medium-r-normal--20-200-75-75-c-100-iso8859-1")
("-misc-fixed-medium-r-normal--20-140-100-100-c-100-iso8859-1")
("-misc-fixed-medium-r-normal--18-120-100-100-c-90-iso8859-1")
("-misc-fixed-medium-r-normal--15-140-75-75-c-90-iso8859-1")
("-misc-fixed-medium-r-normal--15-120-100-100-c-90-iso8859-1")
("-misc-fixed-medium-r-normal--14-130-75-75-c-70-iso8859-1")
("-misc-fixed-medium-r-normal--14-110-100-100-c-70-iso8859-1")
("-misc-fixed-medium-r-normal--13-120-75-75-c-80-iso8859-1")
("-misc-fixed-medium-r-normal--13-120-75-75-c-70-iso8859-1")
("-misc-fixed-medium-r-normal--13-100-100-100-c-80-iso8859-1")
("-misc-fixed-medium-r-normal--13-100-100-100-c-70-iso8859-1")
("-misc-fixed-medium-r-normal--10-70-100-100-c-60-iso8859-1")
("-misc-fixed-medium-r-normal--10-100-75-75-c-60-iso8859-1")
("-misc-fixed-medium-o-semicondensed--13-120-75-75-c-60-iso8859-1")
("-misc-fixed-medium-o-normal--13-120-75-75-c-80-iso8859-1")
("-misc-fixed-medium-o-normal--13-120-75-75-c-70-iso8859-1")
("-misc-fixed-bold-r-semicondensed--13-120-75-75-c-60-iso8859-1")
("-misc-fixed-bold-r-semicondensed--13-100-100-100-c-60-iso8859-1")
("-misc-fixed-bold-r-normal--18-120-100-100-c-90-iso8859-1")
("-misc-fixed-bold-r-normal--15-140-75-75-c-90-iso8859-1")
("-misc-fixed-bold-r-normal--15-120-100-100-c-90-iso8859-1")
("-misc-fixed-bold-r-normal--14-130-75-75-c-70-iso8859-1")
("-misc-fixed-bold-r-normal--13-120-75-75-c-80-iso8859-1")
("-misc-fixed-bold-r-normal--13-120-75-75-c-70-iso8859-1")
("-misc-fixed-bold-r-normal--13-100-100-100-c-80-iso8859-1")
("-misc-fixed-bold-r-normal--13-100-100-100-c-70-iso8859-1"))
((("-misc-fixed-bold-r-normal--13-120-75-75-c-80-iso8859-1" . 1))
("-Misc-Fixed-Bold-R-Normal--13-120-75-75-C-80-ISO8859-1")) ((("8x13bold" .
1)) ("-Misc-Fixed-Bold-R-Normal--13-120-75-75-C-80-ISO8859-1"))
((("-*-fixed-medium-r-normal-*-16-*-*-*-*-*-iso8859-1" . 1))
("-Sony-Fixed-Medium-R-Normal--16-120-100-100-C-80-ISO8859-1")))
notice that tem has 8x13bold, but not 9x15bold.
(gdb) p key
$40 = 10326829
(gdb) pr
(("9x15bold" . 1))
(gdb)
obviously we don't find key in tem, so we go down further into A here
because maxnames=1 (and size=0) so we set try_XLoadQueryFont=1:
if (try_XLoadQueryFont)
{
A--> XFontStruct *font;
unsigned long value;
font = XLoadQueryFont (dpy, SDATA (pattern));
if (x_had_errors_p (dpy))
{
/* This error is perhaps due to insufficient memory on X
server. Let's just ignore it. */
font = NULL;
x_clear_errors (dpy);
}
if (font
&& XGetFontProperty (font, XA_FONT, &value))
{
B--> char *name = (char *) XGetAtomName (dpy, (Atom) value);
int len = strlen (name);
char *tmp;
/* If DXPC (a Differential X Protocol Compressor)
Ver.3.7 is running, XGetAtomName will return null
string. We must avoid such a name. */
if (len == 0)
try_XLoadQueryFont = 0;
else
{
num_fonts = 1;
names = (char **) alloca (sizeof (char *));
/* Some systems only allow alloca assigned to a
simple var. */
tmp = (char *) alloca (len + 1); names[0] = tmp;
bcopy (name, names[0], len + 1);
XFree (name);
}
}
else
try_XLoadQueryFont = 0;
if (font)
XFreeFont (dpy, font);
}
if i continue after the call of XLoadQueryFont(), I get:
(gdb) p pattern
$43 = 10804675
(gdb) pr
"9x15bold"
(gdb) p *font
$44 = {
ext_data = 0x0,
fid = 79693146,
direction = 0,
min_char_or_byte2 = 0,
max_char_or_byte2 = 255,
min_byte1 = 0,
max_byte1 = 0,
all_chars_exist = 0,
default_char = 0,
n_properties = 21,
properties = 0xb04500,
min_bounds = {
lbearing = 0,
rbearing = 0,
width = 9,
ascent = 0,
descent = -9,
attributes = 0
},
max_bounds = {
lbearing = 5,
rbearing = 9,
width = 9,
ascent = 12,
descent = 3,
attributes = 0
},
per_char = 0xb9a000,
ascent = 12,
descent = 3
}
(gdb)
there are no errors, so we get to B:
(gdb) p value
$49 = 435
(gdb) p name
$50 = 0x814180 "-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1"
(gdb)
before we leave x_list_fonts() we store what we've found in the cache:
/* Now store the result in the cache. */
XSETCDR (dpyinfo->name_list_element,
Fcons (Fcons (key, list), XCDR
(dpyinfo->name_list_element)));
Breakpoint 7, x_list_fonts (f=0xb86200, pattern=10804675, size=0,
maxnames=1) at xterm.c:9616
(gdb) p key
$53 = 10326829
(gdb) pr
(("9x15bold" . 1))
(gdb) p list
$54 = 10326813
(gdb) pr
(("-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1"))
(gdb)
and we return it:
Run till exit from #0 x_list_fonts (f=0xb86200, pattern=10804675, size=0,
maxnames=1) at xterm.c:9704
0x0014113c in x_load_font (f=0xb86200, fontname=0x88f828 "9x15bold", size=0)
at xterm.c:9814
Value returned is $59 = 10326789
(gdb) pr
("-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1")
(gdb)
in the callers, we fail to find the font in the list we have and get to:
/* If we have found fonts by x_list_font, load one of them. If
not, we still try to load a font by the name given as FONTNAME
because XListFonts (called in x_list_font) of some X server has
a bug of not finding a font even if the font surely exists and
is loadable by XLoadQueryFont. */
if (size > 0 && !NILP (font_names))
fontname = (char *) SDATA (XCAR (font_names));
BLOCK_INPUT;
x_catch_errors (FRAME_X_DISPLAY (f));
font = (XFontStruct *) XLoadQueryFont (FRAME_X_DISPLAY (f), fontname);
--> if (x_had_errors_p (FRAME_X_DISPLAY (f)))
(gdb) p size
$63 = 0
(gdb) p fontname
$64 = 0x88f828 "9x15bold"
(gdb) p *font
$65 = {
ext_data = 0x0,
fid = 79693147,
direction = 0,
min_char_or_byte2 = 0,
max_char_or_byte2 = 255,
min_byte1 = 0,
max_byte1 = 0,
all_chars_exist = 0,
default_char = 0,
n_properties = 21,
properties = 0xb04600,
min_bounds = {
lbearing = 0,
rbearing = 0,
width = 9,
ascent = 0,
descent = -9,
attributes = 0
},
max_bounds = {
lbearing = 5,
rbearing = 9,
width = 9,
ascent = 12,
descent = 3,
attributes = 0
},
per_char = 0xb9c000,
ascent = 12,
descent = 3
}
(gdb)
exiting from x_load_font() we have:
Run till exit from #0 x_load_font (f=0xb86200, fontname=0x88f828
"9x15bold", size=0) at xterm.c:10039
0x0015f4f4 in fs_load_font (f=0xb86200, c=0, fontname=0x88f828 "9x15bold",
id=-1, face=0x0) at fontset.c:700
Value returned is $68 = (struct font_info *) 0x783270
(gdb) p *fontp
$71 = {
font = 0xb9b280,
font_idx = 2,
name = 0xb7e3e0 "9x15bold",
full_name = 0x965700
"-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1",
charset = 0,
size = 9,
height = 15,
space_width = 9,
average_width = 9,
vertical_centering = 0,
encoding = "\0\377", '\0' <repeats 252 times>,
baseline_offset = 0,
relative_compose = 0,
default_ascent = 0,
font_encoder = 0x0
}
(gdb)
before we exit x_new_font(), I print the frame:
Breakpoint 15, x_new_font (f=0xb86200, fontname=0x0) at xterm.c:7902
(gdb) print *f
$75 = {
size = 1073742934,
next = 0xb91e00,
name = 8136131,
icon_name = 4687873,
title = 4687873,
focus_frame = 4687873,
root_window = 12084228,
selected_window = 12084228,
minibuffer_window = 12084228,
param_alist = 4687873,
scroll_bars = 4687873,
condemned_scroll_bars = 4687873,
menu_bar_items = 4687873,
face_alist = 4687873,
menu_bar_vector = 4687873,
menu_bar_items_used = 0,
buffer_predicate = 4687873,
buffer_list = 10326877,
menu_bar_window = 4687873,
tool_bar_window = 4687873,
tool_bar_items = 4687873,
desired_tool_bar_string = 4687873,
current_tool_bar_string = 4687873,
face_cache = 0x0,
namebuf = 0x0,
current_pool = 0x0,
desired_pool = 0x0,
desired_matrix = 0x0,
current_matrix = 0x0,
glyphs_initialized_p = 0,
tool_bar_lines = 0,
n_tool_bar_rows = 0,
n_tool_bar_items = 0,
decode_mode_spec_buffer = 0x0,
insert_line_cost = 0x0,
delete_line_cost = 0x0,
insert_n_lines_cost = 0x0,
delete_n_lines_cost = 0x0,
text_lines = 10,
text_cols = 10,
total_lines = 0,
total_cols = 10,
new_text_lines = 0,
new_text_cols = 0,
left_pos = 0,
top_pos = 0,
pixel_height = 0,
pixel_width = 0,
x_pixels_diff = 0,
y_pixels_diff = 0,
win_gravity = 0,
size_hint_flags = 0,
border_width = 0,
internal_border_width = 0,
column_width = 9,
space_width = 9,
line_height = 15,
output_method = output_x_window,
output_data = {
x = 0xb94000,
w32 = 0xb94000,
mac = 0xb94000,
nothing = 12140544
},
fringe_cols = 2,
left_fringe_width = 9,
right_fringe_width = 9,
kboard = 0x741680,
want_fullscreen = 0,
menu_bar_lines = 0,
external_menu_bar = 0,
display_preempted = 0 '\0',
visible = 0 '\0',
iconified = 0 '\0',
async_visible = 0 '\0',
async_iconified = 0 '\0',
garbaged = 1 '\001',
has_minibuffer = 1 '\001',
wants_modeline = 0 '\0',
can_have_scroll_bars = 1 '\001',
vertical_scroll_bar_type = vertical_scroll_bar_none,
desired_cursor = FILLED_BOX_CURSOR,
cursor_width = 0,
blink_off_cursor = FILLED_BOX_CURSOR,
blink_off_cursor_width = 0,
auto_raise = 0 '\0',
auto_lower = 0 '\0',
no_split = 1 '\001',
explicit_name = 1 '\001',
window_sizes_changed = 0 '\0',
message_buf = 0x0,
scroll_bottom_vpos = 0,
config_scroll_bar_width = 0,
config_scroll_bar_cols = 2,
scroll_bar_actual_width = 0,
cost_calculation_baud_rate = 0,
mouse_moved = 0 '\0',
gamma = 0,
extra_line_spacing = 0,
resized_p = 0,
force_flush_display_p = 0,
default_face_done_p = 0,
already_hscrolled_p = 0,
updated_p = 0
}
(gdb)
if we exit x_new_font() and contiune in Fx_create_frame(), we get:
x_set_frame_parameters (f, Fcons (Fcons (Qfont, font), Qnil));
where:
(gdb) p font
$81 = 10804611
(gdb) pr
"-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1"
(gdb)
i then let it continue to create the minibuffer frame. the minibuffer frame
is the wrong size. in *scratch*, if I eval (frame-parameters (car
(minibuffer-frame-list))) i get:
((parent-id . 46143352) (display . "dtp020071.misys-risk.com:0.0")
(visibility . t) (icon-name) (outer-window-id . "79693155") (window-id .
"79693157") (top . 0) (left . 250) (buffer-list #<buffer *Minibuf-0*>
#<buffer *Minibuf-1*> #<buffer *scratch*>) (unsplittable . t) (minibuffer .
only) (modeline) (width . 99) (height . 1) (name . "Minibuffer")
(background-mode . dark) (display-type . color) (reverse . t)
(scroll-bar-width . 0) (cursor-type . bar) (auto-lower) (auto-raise . t)
(icon-type . t) (wait-for-wm . t) (title) (buffer-predicate) (tool-bar-lines
. 0) (menu-bar-lines . 1) (scroll-bar-background . "grey75")
(scroll-bar-foreground) (right-fringe . 9) (left-fringe . 9) (line-spacing)
(screen-gamma) (border-color . "#fffff0") (cursor-color . "red")
(mouse-color . "red") (background-color . "black") (foreground-color .
"#fffff0") (vertical-scroll-bars) (internal-border-width . 1) (border-width
. 2) (font . "-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1"))
my session died and i had to start again. i got to this point again, where
emacs is running and has created the *scratch* and minibuffer frames.
so i move the mouse to the minibuffer frame and do M-x set-frame-font RET
(with the intention of changing it to 9x15bold) and i hit here:
Breakpoint 5, x_list_fonts (f=0xb88200, pattern=3678459, size=0,
maxnames=-1) at xterm.c:9427
(gdb) where
#0 x_list_fonts (f=0xb88200, pattern=3678459, size=0, maxnames=-1) at
xterm.c:9427
#1 0x0011d780 in Fx_list_fonts (pattern=3678459, face=4687873,
frame=12091908, maximum=4687873, width=4687873) at xfaces.c:3043
#2 0x00249308 in Feval (form=3678445) at eval.c:2327
#3 0x00249190 in Feval (form=3678405) at eval.c:2298
#4 0x00249190 in Feval (form=3678365) at eval.c:2298
#5 0x00245c10 in FletX (args=3678309) at eval.c:990
#6 0x00248fe0 in Feval (form=3678301) at eval.c:2260
#7 0x0024104c in Fcall_interactively (function=7537481,
record_flag=4687921, keys=4747268) at callint.c:380
#8 0x00190a74 in Fcommand_execute (cmd=7537481, record_flag=4687921,
keys=4687873, special=4687873) at keyboard.c:9797
#9 0x00190fa8 in Fexecute_extended_command (prefixarg=4687873) at
keyboard.c:9913
#10 0x0024aa9c in Ffuncall (nargs=2, args=0xffbedb10) at eval.c:2982
#11 0x00243520 in Fcall_interactively (function=4746361,
record_flag=4687873, keys=4747268) at callint.c:880
#12 0x00190a74 in Fcommand_execute (cmd=4746361, record_flag=4687873,
keys=4687873, special=4687873) at keyboard.c:9797
#13 0x0017b288 in command_loop_1 () at keyboard.c:1790
#14 0x00246eac in internal_condition_case (bfun=0x179104 <command_loop_1>,
handlers=4752009, hfun=0x17872c <cmd_error>) at eval.c:1469
#15 0x00178dd0 in command_loop_2 () at keyboard.c:1326
#16 0x0024663c in internal_catch (tag=4746241, func=0x178da4
<command_loop_2>, arg=4687873) at eval.c:1210
#17 0x00178d48 in command_loop () at keyboard.c:1305
#18 0x00178278 in recursive_edit_1 () at keyboard.c:1003
#19 0x001784d8 in Frecursive_edit () at keyboard.c:1064
#20 0x0017609c in main (argc=3, argv=0xffbee43c) at emacs.c:1794
Lisp Backtrace:
"x-list-fonts" (0x3820fb)
"mapcar" (0x3820cd)
"completing-read" (0x3820a5)
"let*" (0x382065)
"call-interactively" (0x730349)
"execute-extended-command" (0x478801)
"call-interactively" (0x486c79)
(gdb) p pattern
$8 = 3678459
(gdb) pr
"*"
(gdb)
when we search through the cached list, naturally we fail to find it. so we
then end up calling XListFonts() because maxnames=-1 (and size=0) so we set
try_XLoadQueryFont=0, and since this time the pattern is "*" we get a huge
list of fonts back, including 9x15bold.
i'm not sure what to make of this. the first time (when we're creating the
minibuffer frame), x_list_fonts() asks XLoadQueryFont() for "9x15bold" but
gets back "-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1". the
second time (when calling set-frame-font), x_list_fonts() asks XListFonts()
for "*" and gets back a huge list including 9x15bold.
So is it the fault with XLoadQueryFont()?
Or should emacs use XListFonts() in either case?
And surely, if Emacs gets to understand that 9x15bold is equivalent to
-Misc-Fixed-Bold-R-Normal--15-140-75-75-C-90-ISO8859-1, shouldn't Emacs
always assume that? (In other words, if Emacs fails to get the right font
when creating the minibuffer frame, should it not also fail when doing
set-frame-font?)
Simon.
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Marshall, Simon <=