/usr/share/texlive/texmf-dist/tex/plain/pitex/output.ptx is in texlive-plain-extra 2014.20141024-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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\settovalue\pdfpagewidth #1 : width
\settovalue\pdfpageheight #1 : height
\settovalue\baselineskip #1 : baselineskip
\settovalueor\topskip #1 : topskip {\topskip=\baselineskip}%
\settovalue\pdfhorigin #1 : left
\ifattribute #1 : right
{\hsize = \dimexpr(\pdfpagewidth-\pdfhorigin-\usevalue #1 : right )\relax}
{\settovalue\hsize #1 : hsize }%
\settovalue\pdfvorigin #1 : top
\settovalue\parindent #1 : parindent
\settovalue\parskip #1 : parskip
\ifattribute #1 : lines {\vsize=\usevalue #1 : lines \baselineskip}{}%
}
\restrictparameter page :
width
height
hsize
baselineskip
topskip
left
right
top
lines
parindent
parskip
\par
% Defaults... they don't produce anything beautiful.
% I redefine them on every job.
\setparameter page:
height = 28cm
width = 21cm
hsize = 15cm
baselineskip = 12pt
lines = 42
left = 1in
top = 1in
parskip = 0pt
\widowpenalty151
\clubpenalty0
\holdinginserts1
\newdimen\outputsize
\newif\ifheader
\gates new \OutputRoutine {OutputRoutine}%
\OutputRoutine list {output}
[precheck]
{%
\global\holdinginserts0
\OutputRoutine skip {precheck, shipout}{output}%
\ifnum\outputpenalty<\widowpenalty
\global\outputsize=\vsize
\else
\ifnum\outputpenalty=10000
\global\outputsize=\vsize
\else
\ifdim\pagegoal<\vsize
\global\advance\vsize-\baselineskip
\global\outputsize=\dimexpr\vsize+\baselineskip\relax
\else
\global\advance\vsize\baselineskip
\global\outputsize=\dimexpr\vsize-\baselineskip\relax
\fi
\fi
\fi
\unvbox\outputbox
\ifnum\outputpenalty=10000
\penalty0
\else
\penalty\outputpenalty
\fi}
%
(shipout)
. (inserts)
. . [inserts_figures] ?{conditional = \unless\ifvoid\ptx@insert_figures} {%
\setbox\outputbox=\vbox to \outputsize{%
\box\ptx@insert_figures
\unvbox\outputbox}}
. . [inserts_footnotes] ?{conditional = \unless\ifvoid\ptx@insert_footnotes} {%
\setbox\outputbox=\vbox to \outputsize{%
\unvbox\outputbox
\vfil
\vskip.5\skip\ptx@insert_footnotes
\vbox to0pt{\vss\hrule width .3\hsize}%
\vskip.5\skip\ptx@insert_footnotes
\unvbox\ptx@insert_footnotes}}
%
. [headers] {%
\setbox\outputbox=\vbox{%
\kern-3\baselineskip
\vbox to3\baselineskip{%
\hbox to\hsize{\strut\baselineskip {0pt}%
\normalsize\rm\sc
\ifodd\pageno
\hfill\usevalue chapter : inner_title \rlap{\kern1em \the\pageno}\kern-3em
\else
\kern-3em\llap{\the\pageno\kern1em }\usevalue chapter : inner_title \hfill
\fi}
\vfill}
\nointerlineskip
\box\outputbox}}
%
. [ship] {%
\settovalue\pdfhorigin page : left
\shipout\box\outputbox}
%
. [postship] {%
\global\holdinginserts1
\global\vsize\outputsize
\global\advance\count0 1
\ifnum\insertpenalties>0
\ifnum\outputpenalty=\clearpagepenalty
\hbox{}\vfil\penalty\outputpenalty
\fi
\fi}
\output{%
\OutputRoutine execute {output}%
}
% MARGIN NOTES
\setparameter marginnote :
hsize = 3cm
hpos = fr
font = \it
parindent = 0pt
side = right
gap = 1em
\newcount\notecount
\newattribute\ptx@marginnote_attribute
\def\marginnote{%
\ifnext[
{\ptx@marginnote}
{\ptx@marginnote[]}%
}
\long\def\ptx@marginnote[#1]#2{%
\setparameterlist{marginnote@temp}{meta = marginnote, #1}%
\global\advance\notecount 1
\global\expandafter\newbox\csname marginnote_\the\notecount\endcsname
\global\expandafter\setbox\csname marginnote_\the\notecount\endcsname=
\vtop{%
\settovalue\hsize marginnote@temp : hsize
\settovalue{\advance\hsize} marginnote@temp : gap
\leftskip=0pt \rightskip=0pt plus 1 fil \parfillskip=0pt\relax
\ifcasevalue marginnote@temp : hpos
\val ff \rightskip=0pt \parfillskip=0pt plus 1 fil
\val rf \leftskip=0pt plus 1 fil \rightskip=1pt
\val rr \leftskip=0pt plus 1 fil
\endval
\ifvalue marginnote@temp : side = left
{\settovalue{\advance\rightskip} marginnote@temp : gap }
{\settovalue{\advance\leftskip} marginnote@temp : gap }%
\settovalue\baselineskip marginnote@temp : baselineskip
\settovalue\parindent marginnote@temp : parindent
\usevalue marginnote@temp : font
#2}%
\quitvmode % Must be outside the attribute's scope, otherwise the
% paragraphs DIR whatsit might get in the way.
\bgroup
\ifvalue marginnote@temp : side = left
{\ptx@marginnote_attribute=-\expandafter\the\csname marginnote_\the\notecount\endcsname}
{\ptx@marginnote_attribute=\expandafter\the\csname marginnote_\the\notecount\endcsname}\relax
\pdfliteral{}%
\egroup
\deleteparameter marginnote@temp:%
}
\luacode
local WHAT, HLIST, KERN = node.id("whatsit"), node.id("hlist"), node.id("kern")
local GLUE, SPEC = node.id("glue"), node.id("glue_spec")
local marginnote_table = {}
function pitex.misc.mark_lines (head)
for line in node.traverse_id(HLIST, head) do
local t = {left = {}, right = {}}
local item = line.head
while item do
local next = item.next
if item.id == WHAT then
local attr = node.has_attribute(item, \attributenumber\ptx@marginnote_attribute)
if attr then
if attr < 0 then
table.insert(t.left, -attr)
else
table.insert(t.right, attr)
end
line.head = node.remove(line.head, item)
end
end
item = next
end
if #t.left > 0 or #t.right > 0 then
table.insert(marginnote_table, t)
node.set_attribute(line, \attributenumber\ptx@marginnote_attribute, #marginnote_table)
end
end
return head
end
pitex.callback.register("post_linebreak_filter", "pitex.misc:mark_lines")
local lheight, rheight = 0, 0
local function update_height (h)
lheight = lheight + h
rheight = rheight + h
end
local function first_dim (n, t)
while n do
if node.has_field(n, "kern") then
return n.kern
elseif node.has_field(n, "spec") then
return n.spec.width
elseif node.has_field(n, "height") then
return t == "height" and n.height or n.depth
else
n = t == "height" and n.next or n.prev
end
end
return 0
end
function process_marginalia (head)
lheight, rheight = 0, 0
local item, first = node.slide(head), true
while item do
if node.has_field(item, "kern") then
if not first then
update_height(item.kern)
end
elseif node.has_field(item, "spec") then
if not first then
update_height(item.spec.width)
end
elseif node.has_field(item, "height") then
if first then
first = false
else
update_height(item.depth)
end
local attr = node.has_attribute(item, \attributenumber\ptx@marginnote_attribute)
if attr then
for side, notes in pairs (marginnote_table[attr]) do
if #notes > 0 then
local note
for _, n in ipairs(notes) do
if note then
local n, g, s = tex.box[n], node.new(GLUE), node.new(SPEC)
local d = first_dim(node.tail(note.head), "depth")
local h = first_dim(n.head, "height")
s.width = tex.baselineskip.width - (d + h)
g.spec = s
note.depth = note.depth + s.width + n.height + n.depth
node.insert_after(note.head, node.tail(note.head), g)
g.next, n.head.prev = n.head, g
else
note = tex.box[n]
end
end
first = true
local upward = note.depth - first_dim(node.tail(note.head), "depth")
local remainingheight = side == "left" and lheight or rheight
if upward > remainingheight then
upward = remainingheight - upward
else
upward = 0
end
local kern = node.new(KERN, 1)
kern.kern = upward - note.height - item.depth
node.insert_before(note.list, note.list, kern)
note.list = kern
if side == "left" then
note.shift = -note.width
lheight = upward
else
note.shift = item.width
rheight = upward
end
note.height, note.depth = 0, 0
node.insert_after(head, item, note)
else
if side == "left" then
lheight = lheight + item.height
else
rheight = rheight + item.height
end
end
end
else
update_height(item.height)
end
end
item = item.prev
end
end
\luacode/
\OutputRoutine def {processmarginalia}{%
\ptx@lua{process_marginalia(tex.box[255].list)}%
}
\OutputRoutine add {processmarginalia}[first]{shipout}
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