From a85c97c45b3d69dc23f7f45eadbcfd0c3ae896d5 Mon Sep 17 00:00:00 2001
From: Luigi Scarso <luigi.scarso@gmail.com>
Date: Wed, 7 Jun 2017 15:29:32 +0000
Subject: [PATCH] sync with experimental

---
 source/texk/web2c/luatexdir/lua/luatex-core.c | 419 ++++++++--------
 .../texk/web2c/luatexdir/lua/luatex-core.lua  | 453 +++++++++---------
 .../texk/web2c/luatexdir/luatex_svnversion.h  |   2 +-
 3 files changed, 432 insertions(+), 442 deletions(-)

diff --git a/source/texk/web2c/luatexdir/lua/luatex-core.c b/source/texk/web2c/luatexdir/lua/luatex-core.c
index b61e06225..178b9c55e 100644
--- a/source/texk/web2c/luatexdir/lua/luatex-core.c
+++ b/source/texk/web2c/luatexdir/lua/luatex-core.c
@@ -24,7 +24,7 @@ int load_luatex_core_lua (lua_State * L)
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@@ -84,222 +84,215 @@ int load_luatex_core_lua (lua_State * L)
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   };
   return luaL_dostring(L, (const char*) luatex_core_lua);
 }
\ No newline at end of file
diff --git a/source/texk/web2c/luatexdir/lua/luatex-core.lua b/source/texk/web2c/luatexdir/lua/luatex-core.lua
index 81f6ee9b0..167473708 100644
--- a/source/texk/web2c/luatexdir/lua/luatex-core.lua
+++ b/source/texk/web2c/luatexdir/lua/luatex-core.lua
@@ -1,228 +1,225 @@
--- if not modules then modules = { } end modules ['luatex-core'] = {
---     version   = 1.001,
---     comment   = 'companion to luatex',
---     author    = 'Hans Hagen & Luigi Scarso',
---     copyright = 'LuaTeX Development Team',
--- }
-
-LUATEXCOREVERSION = 1.002
-
--- This file overloads some Lua functions. The readline variants provide the same
--- functionality as LuaTeX <= 1.04 and doing it this way permits us to keep the
--- original io libraries clean. Performance is probably even a bit better now.
-
-local type, next, getmetatable, require = type, next, getmetatable, require
-local find, gsub, format = string.find, string.gsub, string.format
-
-local io_open             = io.open
-local io_popen            = io.popen
-local io_line             = io.lines
-
-local fio_readline        = fio.readline
-local fio_checkpermission = fio.checkpermission
-local fio_recordfilename  = fio.recordfilename
-
-local mt                  = getmetatable(io.stderr)
-local mt_lines            = mt.lines
-local saferoption         = status.safer_option
-local shellescape         = status.shell_escape -- 0 (disabled) 1 (anything) 2 (restricted)
-local kpseused            = status.kpse_used    -- 0 1
-
-local write_nl            = texio.write_nl
-
-local saved_open          = io_open  -- can be protected
-local saved_popen         = io_popen -- can be protected
-
-io.saved_lines            = io_lines -- always readonly
-mt.saved_lines            = mt_lines -- always readonly
-
-local function luatex_io_open(name,how)
-    if not how then
-        how = 'r'
-    end
-    local f = io_open(name,how)
-    if f then
-        if type(how) == 'string' and find(how,'w') then
-            fio_recordfilename(name,'w')
-        else
-            fio_recordfilename(name,'r')
-        end
-    end
-    return f
-end
-
-local function luatex_io_open_readonly(name,how)
-    if how then
-        how = 'r'
-    else
-        how = gsub(how,'[^rb]','')
-        if how == '' then
-            how = 'r'
-        end
-    end
-    local f = io_open(name,how)
-    if f then
-        fio_recordfilename(name,'r')
-    end
-    return f
-end
-
-local function luatex_io_popen(name,...)
-    local okay, found = fio_checkpermission(name)
-    if okay and found then
-        return io_popen(found,...)
-    end
-end
-
-local function luatex_io_lines(name)
-    local f = io_open(name,'r')
-    if f then
-        return function()
-            return fio_readline(f)
-        end
-    end
-end
-
-local function luatex_io_readline(f)
-    return function()
-        return fio_readline(f)
-    end
-end
-
-io.lines = luatex_io_lines
-mt.lines = luatex_io_readline
-
--- We assume management to be provided by the replacement of kpse. This is the
--- case in ConTeXt.
-
-if kpseused == 1 then
-
-    io.open  = luatex_io_open
-    io.popen = luatex_io_popen
-
-end
-
-if saferoption == 1 then
-
-    local function installdummy(str,f)
-        local reported = false
-        return function(...)
-            if not reported then
-                write_nl(format("safer option set, function %q is %s",
-                    str,f and "limited" or "disabled"))
-                reported = true
-            end
-            if f then
-                return f(...)
-            end
-        end
-    end
-
-    local function installlimit(str,f)
-        local reported = false
-    end
-
-    os.execute = installdummy("os.execute")
-    os.spawn   = installdummy("os.spawn")
-    os.exec    = installdummy("os.exec")
-    os.setenv  = installdummy("os.setenv")
-    os.tempdir = installdummy("os.tempdir")
-
-    io.popen   = installdummy("io.popen")
-    io.open    = installdummy("io.open",luatex_io_open_readonly)
-
-    os.rename  = installdummy("os.rename")
-    os.remove  = installdummy("os.remove")
-
-    io.tmpfile = installdummy("io.tmpfile")
-    io.output  = installdummy("io.output")
-
-    lfs.chdir  = installdummy("lfs.chdir")
-    lfs.lock   = installdummy("lfs.lock")
-    lfs.touch  = installdummy("lfs.touch")
-    lfs.rmdir  = installdummy("lfs.rmdir")
-    lfs.mkdir  = installdummy("lfs.mkdir")
-
-end
-
-if saferoption == 1 or shellescape ~= 1 then
-
-    ffi = require('ffi')
-    for k, v in next, ffi do
-        if k ~= 'gc' then
-            ffi[k] = nil
-        end
-    end
-    ffi = nil
-
-end
-
--- os.[execute|os.spawn|os.exec] already are shellescape aware)
-
-
-if md5 then
-
-    local sum    = md5.sum
-    local gsub   = string.gsub
-    local format = string.format
-    local byte   = string.byte
-
-    function md5.sumhexa(k)
-        return (gsub(sum(k), ".", function(c)
-            return format("%02x",byte(c))
-        end))
-    end
-
-    function md5.sumHEXA(k)
-        return (gsub(sum(k), ".", function(c)
-            return format("%02X",byte(c))
-        end))
-    end
-
-end
-
-if utilities and utilities.merger and utilities.merger.compact then
-
-    local byte, format, gmatch = string.byte, string.format, string.gmatch
-    local concat = table.concat
-
-    local data = gsub(io.loaddata('luatex-core.lua'),'if%s+utilities.*','')
-    local t = { }
-    local r = { }
-    local n = 0
-    local d = gsub(data,'\r\n','\n')      -- be nice for unix
-    local s = utilities.merger.compact(d) -- no comments and less spaces
-
-    t[#t+1] = '/* generated from and by luatex-core.lua */'
-    t[#t+1] = ''
- -- t[#t+1] = format('/*\n\n%s\n\n*/',d)
- -- t[#t+1] = ''
-    t[#t+1] = '#include "lua.h"'
-    t[#t+1] = '#include "lauxlib.h"'
-    t[#t+1] = ''
-    t[#t+1] = 'int load_luatex_core_lua (lua_State * L);'
-    t[#t+1] = ''
-    t[#t+1] = 'int load_luatex_core_lua (lua_State * L)'
-    t[#t+1] = '{'
-    t[#t+1] = '  static unsigned char luatex_core_lua[] = {'
-    for c in gmatch(d,'.') do
-        if n == 16 then
-            n = 1
-            t[#t+1] = '    ' .. concat(r,', ') .. ','
-        else
-            n = n + 1
-        end
-        r[n] = format('0x%02x',byte(c))
-    end
-    n = n + 1
-    r[n] = '0x00'
-    t[#t+1] = '    ' .. concat(r,', ',1,n)
-    t[#t+1] = '  };'
- -- t[#t+1] = format('unsigned int luatex_core_lua_len = 0x%x;',#d+1)
-    t[#t+1] = '  return luaL_dostring(L, (const char*) luatex_core_lua);'
-    t[#t+1] = '}'
-
-    io.savedata('luatex-core.c',concat(t,'\n'))
-    io.savedata('luatex-core-stripped.lua',s)
-
-end
+-- if not modules then modules = { } end modules ['luatex-core'] = {
+--     version   = 1.001,
+--     comment   = 'companion to luatex',
+--     author    = 'Hans Hagen & Luigi Scarso',
+--     copyright = 'LuaTeX Development Team',
+-- }
+
+LUATEXCOREVERSION = 1.003
+
+-- This file overloads some Lua functions. The readline variants provide the same
+-- functionality as LuaTeX <= 1.04 and doing it this way permits us to keep the
+-- original io libraries clean. Performance is probably even a bit better now.
+
+local type, next, getmetatable, require = type, next, getmetatable, require
+local find, gsub, format = string.find, string.gsub, string.format
+
+local io_open             = io.open
+local io_popen            = io.popen
+local io_line             = io.lines
+
+local fio_readline        = fio.readline
+local fio_checkpermission = fio.checkpermission
+local fio_recordfilename  = fio.recordfilename
+
+local mt                  = getmetatable(io.stderr)
+local mt_lines            = mt.lines
+local saferoption         = status.safer_option
+local shellescape         = status.shell_escape -- 0 (disabled) 1 (anything) 2 (restricted)
+local kpseused            = status.kpse_used    -- 0 1
+
+local write_nl            = texio.write_nl
+
+io.saved_lines            = io_lines -- always readonly
+mt.saved_lines            = mt_lines -- always readonly
+
+local function luatex_io_open(name,how)
+    if not how then
+        how = 'r'
+    end
+    local f = io_open(name,how)
+    if f then
+        if type(how) == 'string' and find(how,'w') then
+            fio_recordfilename(name,'w')
+        else
+            fio_recordfilename(name,'r')
+        end
+    end
+    return f
+end
+
+local function luatex_io_open_readonly(name,how)
+    if how then
+        how = 'r'
+    else
+        how = gsub(how,'[^rb]','')
+        if how == '' then
+            how = 'r'
+        end
+    end
+    local f = io_open(name,how)
+    if f then
+        fio_recordfilename(name,'r')
+    end
+    return f
+end
+
+local function luatex_io_popen(name,...)
+    local okay, found = fio_checkpermission(name)
+    if okay and found then
+        return io_popen(found,...)
+    end
+end
+
+local function luatex_io_lines(name)
+    local f = io_open(name,'r')
+    if f then
+        return function()
+            return fio_readline(f)
+        end
+    end
+end
+
+local function luatex_io_readline(f)
+    return function()
+        return fio_readline(f)
+    end
+end
+
+io.lines = luatex_io_lines
+mt.lines = luatex_io_readline
+
+-- We assume management to be provided by the replacement of kpse. This is the
+-- case in ConTeXt.
+
+if kpseused == 1 then
+
+    io.open  = luatex_io_open
+    io.popen = luatex_io_popen
+
+end
+
+if saferoption == 1 then
+
+    local function installdummy(str,f)
+        local reported = false
+        return function(...)
+            if not reported then
+                write_nl(format("safer option set, function %q is %s",
+                    str,f and "limited" or "disabled"))
+                reported = true
+            end
+            if f then
+                return f(...)
+            end
+        end
+    end
+
+    local function installlimit(str,f)
+        local reported = false
+    end
+
+    os.execute = installdummy("os.execute")
+    os.spawn   = installdummy("os.spawn")
+    os.exec    = installdummy("os.exec")
+    os.setenv  = installdummy("os.setenv")
+    os.tempdir = installdummy("os.tempdir")
+
+    io.popen   = installdummy("io.popen")
+    io.open    = installdummy("io.open",luatex_io_open_readonly)
+
+    os.rename  = installdummy("os.rename")
+    os.remove  = installdummy("os.remove")
+
+    io.tmpfile = installdummy("io.tmpfile")
+    io.output  = installdummy("io.output")
+
+    lfs.chdir  = installdummy("lfs.chdir")
+    lfs.lock   = installdummy("lfs.lock")
+    lfs.touch  = installdummy("lfs.touch")
+    lfs.rmdir  = installdummy("lfs.rmdir")
+    lfs.mkdir  = installdummy("lfs.mkdir")
+
+end
+
+if saferoption == 1 or shellescape ~= 1 then
+
+    ffi = require('ffi')
+    for k, v in next, ffi do
+        if k ~= 'gc' then
+            ffi[k] = nil
+        end
+    end
+    ffi = nil
+
+end
+
+-- os.[execute|os.spawn|os.exec] already are shellescape aware)
+
+
+if md5 then
+
+    local sum    = md5.sum
+    local gsub   = string.gsub
+    local format = string.format
+    local byte   = string.byte
+
+    function md5.sumhexa(k)
+        return (gsub(sum(k), ".", function(c)
+            return format("%02x",byte(c))
+        end))
+    end
+
+    function md5.sumHEXA(k)
+        return (gsub(sum(k), ".", function(c)
+            return format("%02X",byte(c))
+        end))
+    end
+
+end
+
+if utilities and utilities.merger and utilities.merger.compact then
+
+    local byte, format, gmatch = string.byte, string.format, string.gmatch
+    local concat = table.concat
+
+    local data = gsub(io.loaddata('luatex-core.lua'),'if%s+utilities.*','')
+    local t = { }
+    local r = { }
+    local n = 0
+    local d = gsub(data,'\r\n','\n')      -- be nice for unix
+    local s = utilities.merger.compact(d) -- no comments and less spaces
+
+    t[#t+1] = '/* generated from and by luatex-core.lua */'
+    t[#t+1] = ''
+ -- t[#t+1] = format('/*\n\n%s\n\n*/',d)
+ -- t[#t+1] = ''
+    t[#t+1] = '#include "lua.h"'
+    t[#t+1] = '#include "lauxlib.h"'
+    t[#t+1] = ''
+    t[#t+1] = 'int load_luatex_core_lua (lua_State * L);'
+    t[#t+1] = ''
+    t[#t+1] = 'int load_luatex_core_lua (lua_State * L)'
+    t[#t+1] = '{'
+    t[#t+1] = '  static unsigned char luatex_core_lua[] = {'
+    for c in gmatch(d,'.') do
+        if n == 16 then
+            n = 1
+            t[#t+1] = '    ' .. concat(r,', ') .. ','
+        else
+            n = n + 1
+        end
+        r[n] = format('0x%02x',byte(c))
+    end
+    n = n + 1
+    r[n] = '0x00'
+    t[#t+1] = '    ' .. concat(r,', ',1,n)
+    t[#t+1] = '  };'
+ -- t[#t+1] = format('unsigned int luatex_core_lua_len = 0x%x;',#d+1)
+    t[#t+1] = '  return luaL_dostring(L, (const char*) luatex_core_lua);'
+    t[#t+1] = '}'
+
+    io.savedata('luatex-core.c',concat(t,'\n'))
+    io.savedata('luatex-core-stripped.lua',s)
+
+end
diff --git a/source/texk/web2c/luatexdir/luatex_svnversion.h b/source/texk/web2c/luatexdir/luatex_svnversion.h
index d1cc0c3ec..58966afa5 100644
--- a/source/texk/web2c/luatexdir/luatex_svnversion.h
+++ b/source/texk/web2c/luatexdir/luatex_svnversion.h
@@ -1 +1 @@
-#define luatex_svn_revision 6346
+#define luatex_svn_revision 6347
-- 
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