io.lines fix (report from Brian Dunn on luatex, 9 Jun 2017 19:31:11)sat

git-svn-id: svn://tug.org/texlive/trunk@44572 c570f23f-e606-0410-a88d-b1316a301751

2 files changed, 115 insertions, 105 deletions

diff --git a/Build/source/texk/web2c/luatexdir/lua/luatex-core.c b/Build/source/texk/web2c/luatexdir/lua/luatex-core.c
index a18cfcd6b02..631f25c3b99 100644
--- a/Build/source/texk/web2c/luatexdir/lua/luatex-core.c
+++ b/Build/source/texk/web2c/luatexdir/lua/luatex-core.c
@@ -52,7 +52,7 @@ int load_luatex_core_lua (lua_State * L)
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@@ -148,105 +148,111 @@ 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/Build/source/texk/web2c/luatexdir/lua/luatex-core.lua b/Build/source/texk/web2c/luatexdir/lua/luatex-core.lua
index e41ec3f14f6..2f8793893c0 100644
--- a/Build/source/texk/web2c/luatexdir/lua/luatex-core.lua
+++ b/Build/source/texk/web2c/luatexdir/lua/luatex-core.lua
@@ -16,7 +16,7 @@ local find, gsub = string.find, string.gsub
 

 local io_open             = io.open

 local io_popen            = io.popen

-local io_line             = io.lines

+local io_lines            = io.lines

 

 local fio_readline        = fio.readline

 local fio_checkpermission = fio.checkpermission

@@ -71,12 +71,16 @@ local function luatex_io_popen(name,...)
     end

 end

 

-local function luatex_io_lines(name)

-    local f = io_open(name,'r')

-    if f then

-        return function()

-            return fio_readline(f)

+local function luatex_io_lines(name,how)

+    if name then

+        local f = io_open(name,how or 'r')

+        if f then

+            return function()

+                return fio_readline(f)

+            end

         end

+    else

+        return io_lines()

     end

 end