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(init_iterator): Be more strict with bytepos and charspos.

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(DOLIST, LOOP_PROPVAL): New macros.
(invisible_p, invisible_ellipsis_p): Use them.
(invisible_noellipsis_p): New function.
(syms_of_xdisp): Use empty_string.
This commit is contained in:
Stefan Monnier 2001-10-12 22:15:07 +00:00
parent 0d74b00686
commit 3ebf0ea9d5
1 changed files with 65 additions and 65 deletions
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130
src/xdisp.c
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@ -710,8 +710,6 @@ static int try_scrolling P_ ((Lisp_Object, int, int, int, int));
static int try_cursor_movement P_ ((Lisp_Object, struct text_pos, int *));
static int trailing_whitespace_p P_ ((int));
static int message_log_check_duplicate P_ ((int, int, int, int));
int invisible_p P_ ((Lisp_Object, Lisp_Object));
int invisible_ellipsis_p P_ ((Lisp_Object, Lisp_Object));
static void push_it P_ ((struct it *));
static void pop_it P_ ((struct it *));
static void sync_frame_with_window_matrix_rows P_ ((struct window *));
@ -1429,7 +1427,7 @@ check_window_end (w)
at character position CHARPOS. CHARPOS < 0 means that no buffer
position is specified which is useful when the iterator is assigned
a position later. BYTEPOS is the byte position corresponding to
CHARPOS. BYTEPOS <= 0 means compute it from CHARPOS.
CHARPOS. BYTEPOS < 0 means compute it from CHARPOS.
If ROW is not null, calls to produce_glyphs with IT as parameter
will produce glyphs in that row.
@ -1535,7 +1533,7 @@ init_iterator (it, w, charpos, bytepos, row, base_face_id)
/* Non-zero if we should highlight the region. */
highlight_region_p
= (!NILP (Vtransient_mark_mode)
= (!NILP (Vtransient_mark_mode)
&& !NILP (current_buffer->mark_active)
&& XMARKER (current_buffer->mark)->buffer != 0);
@ -1672,14 +1670,14 @@ init_iterator (it, w, charpos, bytepos, row, base_face_id)
/* If a buffer position was specified, set the iterator there,
getting overlays and face properties from that position. */
if (charpos > 0)
if (charpos >= BUF_BEG (current_buffer))
{
it->end_charpos = ZV;
it->face_id = -1;
IT_CHARPOS (*it) = charpos;
/* Compute byte position if not specified. */
if (bytepos <= 0)
if (bytepos < charpos)
IT_BYTEPOS (*it) = CHAR_TO_BYTE (charpos);
else
IT_BYTEPOS (*it) = bytepos;
@ -7991,6 +7989,7 @@ hscroll_window_tree (window)
&text_area_width, &text_area_height);
/* Scroll when cursor is inside this scroll margin. */
/* Shouldn't we export this `5' for customization ? -stef */
hscroll_margin = 5 * CANON_X_UNIT (XFRAME (w->frame));
if ((XFASTINT (w->hscroll)
@ -14501,6 +14500,36 @@ display_string (string, lisp_string, face_string, face_string_pos,
#define DOLIST(var, list, code) \
{ \
register Lisp_Object tail; \
for (tail = list; CONSP (tail); tail = XCDR (tail)) \
{ \
var = XCAR (tail); \
code; \
} \
}
/* Loop through the properties in PROPVAL and call CODE for each.
CODE can access the current element in `propelt'. */
#define LOOP_PROPVAL(var, propval, code) \
{ \
var = (propval); \
code; \
\
if (CONSP (propval)) \
{ \
register Lisp_Object tail; \
for (tail = propval; CONSP (tail); tail = XCDR (tail)) \
{ \
var = XCAR (tail); \
code; \
} \
} \
return 0; \
}
/* This is like a combination of memq and assq. Return 1 if PROPVAL
appears as an element of LIST or as the car of an element of LIST.
If PROPVAL is a list, compare each element against LIST in that
@ -14512,37 +14541,13 @@ invisible_p (propval, list)
register Lisp_Object propval;
Lisp_Object list;
{
register Lisp_Object tail, proptail;
for (tail = list; CONSP (tail); tail = XCDR (tail))
{
register Lisp_Object tem;
tem = XCAR (tail);
if (EQ (propval, tem))
return 1;
if (CONSP (tem) && EQ (propval, XCAR (tem)))
return 1;
}
if (CONSP (propval))
{
for (proptail = propval; CONSP (proptail); proptail = XCDR (proptail))
{
Lisp_Object propelt;
propelt = XCAR (proptail);
for (tail = list; CONSP (tail); tail = XCDR (tail))
{
register Lisp_Object tem;
tem = XCAR (tail);
if (EQ (propelt, tem))
return 1;
if (CONSP (tem) && EQ (propelt, XCAR (tem)))
return 1;
}
}
}
return 0;
register Lisp_Object propelt, tem;
LOOP_PROPVAL (propelt, propval,
DOLIST (tem, list,
if (EQ (propelt, tem))
return 1;
if (CONSP (tem) && EQ (propelt, XCAR (tem)))
return 1;));
}
@ -14557,31 +14562,27 @@ invisible_ellipsis_p (propval, list)
register Lisp_Object propval;
Lisp_Object list;
{
register Lisp_Object tail, proptail;
for (tail = list; CONSP (tail); tail = XCDR (tail))
{
register Lisp_Object tem;
tem = XCAR (tail);
if (CONSP (tem) && EQ (propval, XCAR (tem)))
return ! NILP (XCDR (tem));
}
if (CONSP (propval))
for (proptail = propval; CONSP (proptail); proptail = XCDR (proptail))
{
Lisp_Object propelt;
propelt = XCAR (proptail);
for (tail = list; CONSP (tail); tail = XCDR (tail))
{
register Lisp_Object tem;
tem = XCAR (tail);
if (CONSP (tem) && EQ (propelt, XCAR (tem)))
return ! NILP (XCDR (tem));
}
}
return 0;
register Lisp_Object propelt, tem;
LOOP_PROPVAL (propelt, propval,
DOLIST (tem, list,
if (CONSP (tem) && EQ (propelt, XCAR (tem)))
return !NILP (XCDR (tem))));
}
/* As above but for "completely" invisible (no ellipsis). */
int
invisible_noellipsis_p (propval, list)
register Lisp_Object propval;
Lisp_Object list;
{
register Lisp_Object propelt, tem;
LOOP_PROPVAL (propelt, propval,
DOLIST (tem, list,
if (EQ (propelt, tem))
return 1;
if (CONSP (tem) && EQ (propelt, XCAR (tem)))
return NILP (XCDR (tem))));
}
@ -14801,7 +14802,7 @@ and is used only on frames for which no explicit name has been set\n\
= Vframe_title_format
= Fcons (intern ("multiple-frames"),
Fcons (build_string ("%b"),
Fcons (Fcons (build_string (""),
Fcons (Fcons (empty_string,
Fcons (intern ("invocation-name"),
Fcons (build_string ("@"),
Fcons (intern ("system-name"),
@ -14856,8 +14857,7 @@ vertical margin.");
"List of functions to call to fontify regions of text.\n\
Each function is called with one argument POS. Functions must\n\
fontify a region starting at POS in the current buffer, and give\n\
fontified regions the property `fontified'.\n\
This variable automatically becomes buffer-local when set.");
fontified regions the property `fontified'.");
Vfontification_functions = Qnil;
Fmake_variable_buffer_local (Qfontification_functions);