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% eptexdir/etex.ch0: changefile used to build e-pTeX, see eptexdir/eptex-base.ch for details.
% Public domain. Originally written by Peter Breitenlohner <tex-live@tug.org>.
@x [10] m.135 l.2895 - e-TeX TeXXeT
|fil|, |fill|, or |filll|). The |subtype| field is not used in \TeX.
@y
|fil|, |fill|, or |filll|). The |subtype| field is not used.
@z
@x [17.236] l.4960 - first web2c, then e-TeX additional integer parameters
@d int_pars=web2c_int_pars {total number of integer parameters}
@#
@d etex_int_base=tex_int_pars {base for \eTeX's integer parameters}
@y
@d int_pars=web2c_int_pars {total number of integer parameters}
@d count_base=int_base+int_pars {256 user \.{\\count} registers}
@z
@x [26.413]
{fetch an internal parameter}
label exit;
var m:halfword; {|chr_code| part of the operand token}
@!q,@!r:pointer; {general purpose indices}
@!tx:pointer; {effective tail node}
@y
{fetch an internal parameter}
var m:halfword; {|chr_code| part of the operand token}
@z
@x [26.413]
exit:end;
@y
end;
@z
@x
@d badness_code=input_line_no_code+1 {code for \.{\\badness}}
@y
@d badness_code=glue_val+2 {code for \.{\\badness}}
@z
@x [26.420]
begin scan_register_num; fetch_box(q);
if q=null then cur_val:=0 @+else cur_val:=mem[q+m].sc;
@y
begin scan_eight_bit_int;
if box(cur_val)=null then cur_val:=0 @+else cur_val:=mem[box(cur_val)+m].sc;
@z
@x [26.424]
legal in similar contexts.
@y
legal in similar contexts.
@z
@x [26.424]
@d find_effective_tail==find_effective_tail_eTeX
@y
@z
@x
if m>=eTeX_glue then @<Process an expression and |return|@>@;
else if m>=eTeX_dim then
begin case m of
@/@<Cases for fetching a dimension value@>@/
end; {there are no other cases}
cur_val_level:=dimen_val;
end
else begin case m of
input_line_no_code: cur_val:=line;
badness_code: cur_val:=last_badness;
@/@<Cases for fetching an integer value@>@/
end; {there are no other cases}
@y
begin if cur_chr=input_line_no_code then cur_val:=line
else cur_val:=last_badness; {|cur_chr=badness_code|}
@z
@x [26.424]
find_effective_tail;
@y
@z
@x [26.424]
if not is_char_node(tx)and(mode<>0) then
case cur_chr of
int_val: if type(tx)=penalty_node then cur_val:=penalty(tx);
dimen_val: if type(tx)=kern_node then cur_val:=width(tx);
glue_val: if type(tx)=glue_node then
begin cur_val:=glue_ptr(tx);
if subtype(tx)=mu_glue then cur_val_level:=mu_val;
@y
if not is_char_node(tail)and(mode<>0) then
case cur_chr of
int_val: if type(tail)=penalty_node then cur_val:=penalty(tail);
dimen_val: if type(tail)=kern_node then cur_val:=width(tail);
glue_val: if type(tail)=glue_node then
begin cur_val:=glue_ptr(tail);
if subtype(tail)=mu_glue then cur_val_level:=mu_val;
@z
@x [26.424]
else if (mode=vmode)and(tx=head) then
@y
else if (mode=vmode)and(tail=head) then
@z
@x [27.468]
@d etex_convert_base=5 {base for \eTeX's command codes}
@d eTeX_revision_code=etex_convert_base {command code for \.{\\eTeXrevision}}
@d etex_convert_codes=etex_convert_base+1 {end of \eTeX's command codes}
@d job_name_code=etex_convert_codes {command code for \.{\\jobname}}
@y
@d job_name_code=5 {command code for \.{\\jobname}}
@z
@x [30.581]
var old_setting: integer; {saved value of |tracing_online|}
@y
@z
@x [32.619]
save_loc:=dvi_offset+dvi_ptr; base_line:=cur_v;
prev_p:=this_box+list_offset;
@<Initialize |hlist_out| for mixed direction typesetting@>;
left_edge:=cur_h;
@y
save_loc:=dvi_offset+dvi_ptr; base_line:=cur_v; left_edge:=cur_h;
@z
@x [32.620]
prev_p:=link(prev_p); {N.B.: not |prev_p:=p|, |p| might be |lig_trick|}
@y
@z
@x [32.624] l.13005 - pTeX: output a box(and dir_node) with disp
cur_h:=edge; cur_v:=base_line;
@y
cur_h:=edge+width(p); cur_v:=base_line;
@z
@x [33.649]
exit: if TeXXeT_en then @<Check for LR anomalies at the end of |hpack|@>;
hpack:=r;
@y
exit: hpack:=r;
@z
@x [44.977]
q:=prune_page_top(q,saving_vdiscards>0);
p:=list_ptr(v); free_node(v,box_node_size);
if q<>null then q:=vpack(q,natural);
change_box(q); {the |eq_level| of the box stays the same}
@y
q:=prune_page_top(q); p:=list_ptr(v); free_node(v,box_node_size);
if q=null then box(n):=null {the |eq_level| of the box stays the same}
else box(n):=vpack(q,natural);
@z
@x [47.1079]
@!r:pointer; {running behind |p|}
@!fm:boolean; {a final \.{\\beginM} \.{\\endM} node pair?}
@!tx:pointer; {effective tail node}
@y
@z
@x [47.1080]
@d check_effective_tail(#)==find_effective_tail_eTeX
@d fetch_effective_tail==fetch_effective_tail_eTeX
@y
@z
@x [47.1080]
else begin check_effective_tail(goto done);
if not is_char_node(tx) then
if (type(tx)=hlist_node)or(type(tx)=vlist_node) then
@<Remove the last box, unless it's part of a discretionary@>;
done:end;
@y
else begin if not is_char_node(tail) then
if (type(tail)=hlist_node)or(type(tail)=vlist_node) then
@<Remove the last box, unless it's part of a discretionary@>;
end;
@z
@x [47.1081]
begin fetch_effective_tail(goto done);
cur_box:=tx; shift_amount(cur_box):=0;
end
@y
begin q:=head;
repeat p:=q;
if not is_char_node(q) then if type(q)=disc_node then
begin for m:=1 to replace_count(q) do p:=link(p);
if p=tail then goto done;
end;
q:=link(p);
until q=tail;
cur_box:=tail; shift_amount(cur_box):=0;
tail:=p; link(p):=null;
done:end
@z
@x [47.1096]
else line_break(false);
@y
else line_break(widow_penalty);
@z
@x [47.1105]
@!r:pointer; {running behind |p|}
@!fm:boolean; {a final \.{\\beginM} \.{\\endM} node pair?}
@!tx:pointer; {effective tail node}
@y
@z
@x [47.1105]
else begin check_effective_tail(return);
if not is_char_node(tx) then if type(tx)=cur_chr then
begin fetch_effective_tail(return);
flush_node_list(tx);
@y
else begin if not is_char_node(tail) then if type(tail)=cur_chr then
begin q:=head;
repeat p:=q;
if not is_char_node(q) then if type(q)=disc_node then
begin for m:=1 to replace_count(q) do p:=link(p);
if p=tail then return;
end;
q:=link(p);
until q=tail;
link(p):=null; flush_node_list(tail); tail:=p;
@z
@x [47.1110]
else begin link(tail):=list_ptr(p); change_box(null);
@y
else begin link(tail):=list_ptr(p); box(cur_val):=null;
@z
@x [48.1145]
else begin line_break(true);@/
@y
else begin line_break(display_widow_penalty);@/
@z
@x [49.1247]
if b<>null then mem[b+c].sc:=cur_val;
@y
if box(b)<>null then mem[box(b)+c].sc:=cur_val;
@z
|
